Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S0108270107048937/tr3024sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S0108270107048937/tr3024Isup2.hkl | |
Structure factor file (CIF format) https://doi.org/10.1107/S0108270107048937/tr3024IIsup3.hkl |
CCDC references: 292398; 292399
For related literature, see: Aukauloo et al. (1999); Beley et al. (1986); Bera et al. (2006); Berkessel et al. (1996); Birkelbach et al. (1997); Brooker et al. (2000); Cervera et al. (1997); Chaudhuri (2003); Colacio et al. (1997); Costes et al. (1998); Edison et al. (2004); Fujita et al. (1994); Goldcamp et al. (2002); Gupta Sreerama & Pal (2002); Kimura, Wada, Shionoya & Okazaki (1994, 1994); Kolodziej (1994); Kruger et al. (1991); Kukushkin & Pombeiro (1999); Lancaster (1988); Mohanty et al. (1975); Pal et al. (1986); Parashar et al. (1988); Pavlishchuk et al. (2001, 2003); Rispens et al. (1996); Singh & Chakravorty (1980); Singh et al. (1977); West et al. (1993).
For the preparation of (I), a methanol solution (20 ml) of N,N-dimethyl ethylenediamine (0.40 ml, 3.8 mmol) and 2,3-butanedione monoxime (0.38 g, 3.8 mmol) was stirred at room temperature. After stirring for an hour, a methanol solution (20 ml) of Ni(ClO4)2·6H2O (1.38 g, 3.8 mmol) and then NEt3(0.52 ml, 3.8 mmol) were added. After complete addition, a dark-orange–red compound was seen separating in solution. The whole reaction mixture was stirred for another hour at room temperature. The solvent was evaporated in air. The orange–red precipitate was filtered off through a glass frit and washed with ethanol and hexane. Recrystallization from acetonitrile/dichloromethane gave needle-shaped crystals. The products were dried in vacuo over fused CaCl2. Yield 1.11 g (85%). Analysis calculated for C18H35Cl2N7Ni2O10: C 30.98, H 5.05, N 14.05, Ni 16.75%; found: C 30.67, H 4.97, N 14.27, Ni 16.86%. 1H NMR ([D6]DMSO): δ 3.53–3.65 (m, 4H, CH2 attached to imine N), 2.65–2.69 (m, 4H, CH2 attached to amine N), 2.19 (s, 6H, imine CH3), 2.27 (s, 6H, oxime CH3), 1.92 (s, 12H, amine CH3). FT–IR (cm-1, KBr disk): ν 3429 (b), 2924 (m), 1632 (s), 1583 (s), 1537 (s), 1475 (s), 1237(s),1091 (s), 963 (s), 714 (s). Molar conductance, ΛM (MeCN solution): 190.34 Ω-1cm2mol-1. UV–vis spectra [λmax, nm (ε, l mol-1 cm-1)]: (MeCN solution) 556 (290), 395 (8770), 341 (8565), 225 (18750).
For the preparation of (II), this complex was prepared in a similar manner to (I) using 1-phenyl-1,2-propanedione-2-oxime. Yield: 1.38 g (92%). Analysis calculated for C26H36Cl2N6Ni2O10: C 39.98, H 4.64, N 10.76, Ni 14.96%; found: C 39.53, H 4.77, N 10.57, Ni 14.75%. 1H NMR ([D6]DMSO): δ 7.21–7.65 (m, 10H, C6H5), 3.47–3.65 (m, 4H, CH2 attached to imine N), 2.68–2.78 (m, 4H, CH2 attached to amine N), 2.22 (s, 6H, oxime CH3), 1.90 (s, 12H, amine CH3). FT–IR (cm-1, KBr disk): ν 3425 (b), 2936 (m), 1627 (s), 1587 (s), 1520 (s), 1447 (s), 1234 (s),1094 (s), 924 (s), 722 (s). Molar conductance ΛM (MeCN solution): 194.46 Ω-1cm2mol-1. UV–vis spectra [λmax, nm (ε, L mol-1 cm-1)]: (MeCN solution) 563 (225), 387 (6240), 343 (7550), 231 (20435).
For both compounds, data collection: APEX2 (Bruker, 2004); cell refinement: APEX2 and SAINT (Bruker, 2004); data reduction: SAINT (Bruker, 2004) and XPREP (Sheldrick, 2003); program(s) used to solve structure: XS (Sheldrick, 2001); program(s) used to refine structure: XL (Sheldrick, 2001); molecular graphics: XP (Sheldrick, 1998); software used to prepare material for publication: XCIF (Sheldrick, 2001) and enCIFer (Allen et al., 2004).
[Ni2(C8H16N3O)2](ClO4)2·C2H3N | F(000) = 1448 |
Mr = 697.85 | Dx = 1.673 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 9844 reflections |
a = 13.1320 (3) Å | θ = 2.6–41.5° |
b = 12.2045 (3) Å | µ = 1.62 mm−1 |
c = 17.2959 (5) Å | T = 100 K |
β = 91.6220 (14)° | Needle, deep violet |
V = 2770.89 (12) Å3 | 0.23 × 0.22 × 0.14 mm |
Z = 4 |
Bruker D8-APEXII CCD diffractometer | 14483 independent reflections |
Radiation source: fine-focus sealed tube, Siemens KFFMO2K-90 | 12536 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.075 |
Detector resolution: 8.33 pixels mm-1 | θmax = 31.5°, θmin = 1.9° |
ϕ and ω scans | h = −19→19 |
Absorption correction: multi-scan (TWINABS; Blessing, 1995; Sheldrick, 2004) | k = 0→17 |
Tmin = 0.708, Tmax = 0.806 | l = 0→25 |
290302 measured reflections |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.035 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.095 | H-atom parameters constrained |
S = 1.06 | w = 1/[σ2(Fo2) + (0.0471P)2 + 2.0073P] where P = (Fo2 + 2Fc2)/3 |
14483 reflections | (Δ/σ)max = 0.005 |
375 parameters | Δρmax = 0.84 e Å−3 |
0 restraints | Δρmin = −0.48 e Å−3 |
[Ni2(C8H16N3O)2](ClO4)2·C2H3N | V = 2770.89 (12) Å3 |
Mr = 697.85 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 13.1320 (3) Å | µ = 1.62 mm−1 |
b = 12.2045 (3) Å | T = 100 K |
c = 17.2959 (5) Å | 0.23 × 0.22 × 0.14 mm |
β = 91.6220 (14)° |
Bruker D8-APEXII CCD diffractometer | 14483 independent reflections |
Absorption correction: multi-scan (TWINABS; Blessing, 1995; Sheldrick, 2004) | 12536 reflections with I > 2σ(I) |
Tmin = 0.708, Tmax = 0.806 | Rint = 0.075 |
290302 measured reflections |
R[F2 > 2σ(F2)] = 0.035 | 0 restraints |
wR(F2) = 0.095 | H-atom parameters constrained |
S = 1.06 | Δρmax = 0.84 e Å−3 |
14483 reflections | Δρmin = −0.48 e Å−3 |
375 parameters |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes. |
Refinement. This crystal was a nonmerohedral twin, refined in 2 domains. The scale factor relating the second domain to the first is 0.3448 (8). Indexing was done with Cell_Now (Sheldrick, G. M. (2005). University of Göttingen, Germany) and scaled with TWINABS (Sheldrick, G. M. (2004). University of Göttingen, Germany). Because of twinning, there are more reflections than expected in the intensity data file. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
Ni1 | 0.314793 (15) | 0.528113 (15) | 0.146451 (10) | 0.01178 (4) | |
Ni2 | 0.190627 (14) | 0.732682 (15) | 0.026918 (10) | 0.01180 (4) | |
N1 | 0.17710 (10) | 0.57300 (10) | 0.14498 (6) | 0.0134 (2) | |
N2 | 0.26571 (10) | 0.41760 (10) | 0.20861 (7) | 0.0145 (2) | |
N3 | 0.44934 (10) | 0.46613 (10) | 0.17170 (7) | 0.0138 (2) | |
N4 | 0.33105 (10) | 0.71370 (9) | 0.04892 (6) | 0.0125 (2) | |
N5 | 0.23690 (10) | 0.83038 (10) | −0.04527 (7) | 0.0141 (2) | |
N6 | 0.05362 (10) | 0.76740 (11) | −0.01262 (7) | 0.0159 (2) | |
O1 | 0.13318 (9) | 0.65820 (9) | 0.10779 (6) | 0.0171 (2) | |
O2 | 0.37719 (9) | 0.64824 (9) | 0.10076 (6) | 0.01545 (19) | |
C1 | 0.11735 (12) | 0.51627 (11) | 0.18975 (8) | 0.0142 (2) | |
C2 | 0.17097 (12) | 0.42295 (11) | 0.22602 (8) | 0.0149 (2) | |
C3 | 0.33902 (13) | 0.33598 (12) | 0.23874 (8) | 0.0175 (3) | |
H3A | 0.3100 | 0.2613 | 0.2350 | 0.021* | |
H3B | 0.3579 | 0.3514 | 0.2935 | 0.021* | |
C4 | 0.43115 (13) | 0.34670 (12) | 0.18808 (8) | 0.0176 (3) | |
H4A | 0.4918 | 0.3147 | 0.2148 | 0.021* | |
H4B | 0.4189 | 0.3066 | 0.1389 | 0.021* | |
C5 | 0.00841 (12) | 0.54481 (13) | 0.20181 (9) | 0.0185 (3) | |
H5A | 0.0034 | 0.6220 | 0.2167 | 0.028* | |
H5B | −0.0185 | 0.4987 | 0.2429 | 0.028* | |
H5C | −0.0312 | 0.5325 | 0.1537 | 0.028* | |
C6 | 0.11909 (14) | 0.34423 (13) | 0.27795 (9) | 0.0206 (3) | |
H6A | 0.1559 | 0.2744 | 0.2786 | 0.031* | |
H6B | 0.0490 | 0.3323 | 0.2589 | 0.031* | |
H6C | 0.1183 | 0.3743 | 0.3305 | 0.031* | |
C7 | 0.48936 (13) | 0.52391 (13) | 0.24228 (9) | 0.0197 (3) | |
H7A | 0.5536 | 0.4900 | 0.2598 | 0.029* | |
H7B | 0.4396 | 0.5185 | 0.2833 | 0.029* | |
H7C | 0.5011 | 0.6012 | 0.2301 | 0.029* | |
C8 | 0.52589 (13) | 0.47497 (13) | 0.11041 (9) | 0.0193 (3) | |
H8A | 0.5416 | 0.5523 | 0.1014 | 0.029* | |
H8B | 0.4984 | 0.4422 | 0.0625 | 0.029* | |
H8C | 0.5882 | 0.4363 | 0.1269 | 0.029* | |
C9 | 0.39127 (11) | 0.77998 (11) | 0.01071 (8) | 0.0129 (2) | |
C10 | 0.33371 (12) | 0.84850 (11) | −0.04498 (8) | 0.0141 (2) | |
C11 | 0.15946 (13) | 0.89131 (13) | −0.09018 (9) | 0.0198 (3) | |
H11A | 0.1822 | 0.9042 | −0.1435 | 0.024* | |
H11B | 0.1460 | 0.9630 | −0.0657 | 0.024* | |
C12 | 0.06449 (13) | 0.82041 (14) | −0.09100 (9) | 0.0219 (3) | |
H12A | 0.0038 | 0.8659 | −0.1034 | 0.026* | |
H12B | 0.0695 | 0.7631 | −0.1313 | 0.026* | |
C13 | 0.50370 (12) | 0.78311 (12) | 0.02534 (8) | 0.0171 (3) | |
H13A | 0.5182 | 0.8015 | 0.0797 | 0.026* | |
H13B | 0.5339 | 0.8386 | −0.0079 | 0.026* | |
H13C | 0.5329 | 0.7112 | 0.0139 | 0.026* | |
C14 | 0.38431 (14) | 0.93132 (13) | −0.09506 (9) | 0.0219 (3) | |
H14A | 0.3421 | 0.9439 | −0.1419 | 0.033* | |
H14B | 0.4513 | 0.9039 | −0.1095 | 0.033* | |
H14C | 0.3926 | 1.0003 | −0.0666 | 0.033* | |
C15 | 0.00375 (14) | 0.84296 (14) | 0.04152 (9) | 0.0228 (3) | |
H15A | −0.0644 | 0.8616 | 0.0211 | 0.034* | |
H15B | 0.0445 | 0.9099 | 0.0473 | 0.034* | |
H15C | −0.0018 | 0.8074 | 0.0920 | 0.034* | |
C16 | −0.01185 (14) | 0.66763 (14) | −0.02411 (10) | 0.0245 (3) | |
H16A | −0.0244 | 0.6339 | 0.0262 | 0.037* | |
H16B | 0.0230 | 0.6150 | −0.0570 | 0.037* | |
H16C | −0.0769 | 0.6888 | −0.0490 | 0.037* | |
Cl1 | 0.25360 (3) | 0.09139 (3) | 0.09637 (2) | 0.01817 (7) | |
O3 | 0.35602 (10) | 0.08956 (11) | 0.12973 (8) | 0.0269 (3) | |
O4 | 0.25676 (12) | 0.11858 (14) | 0.01532 (7) | 0.0357 (3) | |
O5 | 0.20689 (13) | −0.01533 (12) | 0.10457 (8) | 0.0329 (3) | |
O6 | 0.19360 (12) | 0.17170 (14) | 0.13583 (9) | 0.0390 (4) | |
Cl2 | 0.72907 (8) | 0.85138 (8) | 0.27801 (6) | 0.0208 (2) | 0.859 (9) |
Cl2' | 0.7404 (9) | 0.8436 (10) | 0.2529 (14) | 0.060 (3) | 0.141 (9) |
O7 | 0.80798 (12) | 0.76884 (14) | 0.28286 (9) | 0.0377 (3) | |
O8 | 0.63731 (11) | 0.80429 (13) | 0.24328 (8) | 0.0329 (3) | |
O9 | 0.70873 (13) | 0.89029 (13) | 0.35479 (9) | 0.0377 (3) | |
O10 | 0.7598 (2) | 0.9448 (3) | 0.2339 (2) | 0.0495 (9) | 0.859 (9) |
O10' | 0.7787 (14) | 0.9087 (18) | 0.2026 (13) | 0.0495 (9) | 0.141 (9) |
N7 | 0.28970 (15) | 0.43173 (16) | 0.01895 (10) | 0.0345 (4) | |
C17 | 0.26751 (14) | 0.39004 (15) | −0.03841 (10) | 0.0246 (3) | |
C18 | 0.24276 (16) | 0.33569 (17) | −0.11159 (10) | 0.0296 (4) | |
H18A | 0.3026 | 0.2957 | −0.1291 | 0.044* | |
H18B | 0.2225 | 0.3906 | −0.1504 | 0.044* | |
H18C | 0.1865 | 0.2842 | −0.1045 | 0.044* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Ni1 | 0.01100 (8) | 0.01228 (8) | 0.01207 (7) | 0.00042 (6) | 0.00042 (6) | 0.00198 (5) |
Ni2 | 0.01000 (8) | 0.01294 (8) | 0.01248 (7) | 0.00045 (6) | 0.00078 (6) | 0.00259 (6) |
N1 | 0.0134 (5) | 0.0145 (5) | 0.0122 (4) | 0.0005 (4) | −0.0007 (4) | 0.0019 (4) |
N2 | 0.0166 (6) | 0.0143 (5) | 0.0127 (5) | −0.0002 (4) | −0.0004 (4) | 0.0022 (4) |
N3 | 0.0141 (6) | 0.0142 (5) | 0.0130 (5) | 0.0010 (4) | 0.0000 (4) | 0.0006 (4) |
N4 | 0.0123 (5) | 0.0122 (5) | 0.0130 (5) | 0.0009 (4) | 0.0008 (4) | 0.0000 (4) |
N5 | 0.0145 (6) | 0.0144 (5) | 0.0134 (5) | 0.0006 (4) | −0.0003 (4) | 0.0018 (4) |
N6 | 0.0139 (6) | 0.0177 (5) | 0.0161 (5) | −0.0002 (5) | −0.0003 (4) | 0.0033 (4) |
O1 | 0.0134 (5) | 0.0190 (5) | 0.0192 (4) | 0.0038 (4) | 0.0034 (4) | 0.0083 (4) |
O2 | 0.0130 (5) | 0.0159 (4) | 0.0173 (4) | 0.0006 (4) | −0.0011 (4) | 0.0050 (3) |
C1 | 0.0141 (6) | 0.0156 (6) | 0.0129 (5) | −0.0007 (5) | 0.0000 (5) | 0.0017 (4) |
C2 | 0.0176 (7) | 0.0149 (6) | 0.0120 (5) | −0.0024 (5) | −0.0007 (5) | 0.0010 (4) |
C3 | 0.0195 (7) | 0.0151 (6) | 0.0178 (6) | 0.0020 (5) | −0.0005 (5) | 0.0044 (5) |
C4 | 0.0184 (7) | 0.0145 (6) | 0.0198 (6) | 0.0033 (5) | 0.0004 (5) | 0.0011 (5) |
C5 | 0.0142 (7) | 0.0221 (7) | 0.0193 (6) | −0.0008 (5) | 0.0036 (5) | 0.0030 (5) |
C6 | 0.0210 (7) | 0.0212 (7) | 0.0197 (6) | −0.0045 (6) | 0.0026 (6) | 0.0076 (5) |
C7 | 0.0191 (7) | 0.0224 (7) | 0.0173 (6) | 0.0003 (6) | −0.0042 (5) | −0.0026 (5) |
C8 | 0.0167 (7) | 0.0222 (7) | 0.0193 (6) | 0.0033 (6) | 0.0038 (5) | 0.0028 (5) |
C9 | 0.0126 (6) | 0.0123 (5) | 0.0138 (5) | −0.0001 (5) | 0.0015 (5) | −0.0006 (4) |
C10 | 0.0158 (6) | 0.0130 (5) | 0.0135 (5) | −0.0001 (5) | 0.0014 (5) | 0.0003 (4) |
C11 | 0.0160 (7) | 0.0223 (7) | 0.0211 (6) | 0.0017 (6) | −0.0012 (5) | 0.0093 (5) |
C12 | 0.0180 (7) | 0.0288 (8) | 0.0189 (6) | −0.0003 (6) | −0.0020 (5) | 0.0062 (5) |
C13 | 0.0127 (6) | 0.0188 (6) | 0.0197 (6) | −0.0011 (5) | 0.0017 (5) | 0.0015 (5) |
C14 | 0.0197 (7) | 0.0219 (7) | 0.0242 (7) | −0.0037 (6) | 0.0030 (6) | 0.0092 (5) |
C15 | 0.0197 (8) | 0.0243 (7) | 0.0244 (7) | 0.0058 (6) | −0.0007 (6) | −0.0034 (6) |
C16 | 0.0220 (8) | 0.0232 (7) | 0.0280 (7) | −0.0050 (6) | −0.0038 (6) | −0.0011 (6) |
Cl1 | 0.01349 (15) | 0.02239 (16) | 0.01862 (14) | −0.00163 (12) | 0.00052 (12) | 0.00028 (11) |
O3 | 0.0148 (6) | 0.0340 (7) | 0.0318 (6) | −0.0002 (5) | −0.0037 (5) | 0.0037 (5) |
O4 | 0.0297 (7) | 0.0552 (9) | 0.0220 (6) | −0.0062 (7) | −0.0007 (5) | 0.0122 (6) |
O5 | 0.0374 (8) | 0.0303 (7) | 0.0309 (6) | −0.0171 (6) | −0.0019 (6) | 0.0016 (5) |
O6 | 0.0257 (7) | 0.0439 (8) | 0.0472 (8) | 0.0098 (6) | −0.0011 (6) | −0.0198 (7) |
Cl2 | 0.0139 (3) | 0.0254 (3) | 0.0229 (4) | −0.00297 (19) | −0.0022 (2) | 0.0079 (2) |
Cl2' | 0.028 (3) | 0.070 (4) | 0.082 (9) | −0.005 (3) | −0.009 (4) | 0.032 (5) |
O7 | 0.0271 (8) | 0.0472 (8) | 0.0385 (7) | 0.0119 (7) | −0.0035 (6) | −0.0001 (6) |
O8 | 0.0180 (6) | 0.0465 (8) | 0.0341 (7) | −0.0053 (6) | −0.0012 (5) | −0.0075 (6) |
O9 | 0.0373 (9) | 0.0353 (7) | 0.0401 (7) | 0.0003 (7) | −0.0052 (7) | −0.0088 (6) |
O10 | 0.0386 (12) | 0.0599 (16) | 0.0495 (17) | −0.0166 (12) | −0.0096 (12) | 0.0377 (14) |
O10' | 0.0386 (12) | 0.0599 (16) | 0.0495 (17) | −0.0166 (12) | −0.0096 (12) | 0.0377 (14) |
N7 | 0.0295 (9) | 0.0466 (10) | 0.0276 (7) | −0.0060 (8) | 0.0052 (7) | −0.0088 (7) |
C17 | 0.0189 (8) | 0.0287 (8) | 0.0262 (7) | −0.0010 (6) | 0.0032 (6) | −0.0007 (6) |
C18 | 0.0267 (9) | 0.0369 (9) | 0.0252 (8) | −0.0016 (8) | −0.0012 (7) | −0.0062 (7) |
Ni1—N2 | 1.8519 (12) | C8—H8B | 0.9800 |
Ni1—O2 | 1.8660 (10) | C8—H8C | 0.9800 |
Ni1—N1 | 1.8888 (13) | C9—C10 | 1.469 (2) |
Ni1—N3 | 1.9598 (13) | C9—C13 | 1.491 (2) |
Ni2—N5 | 1.8420 (12) | C10—C14 | 1.499 (2) |
Ni2—O1 | 1.8471 (10) | C11—C12 | 1.518 (2) |
Ni2—N4 | 1.8866 (13) | C11—H11A | 0.9900 |
Ni2—N6 | 1.9531 (14) | C11—H11B | 0.9900 |
N1—C1 | 1.3150 (18) | C12—H12A | 0.9900 |
N1—O1 | 1.3441 (15) | C12—H12B | 0.9900 |
N2—C2 | 1.290 (2) | C13—H13A | 0.9800 |
N2—C3 | 1.470 (2) | C13—H13B | 0.9800 |
N3—C8 | 1.4854 (19) | C13—H13C | 0.9800 |
N3—C7 | 1.4924 (19) | C14—H14A | 0.9800 |
N3—C4 | 1.5052 (19) | C14—H14B | 0.9800 |
N4—C9 | 1.3213 (17) | C14—H14C | 0.9800 |
N4—O2 | 1.3337 (15) | C15—H15A | 0.9800 |
N5—C10 | 1.290 (2) | C15—H15B | 0.9800 |
N5—C11 | 1.4648 (19) | C15—H15C | 0.9800 |
N6—C15 | 1.480 (2) | C16—H16A | 0.9800 |
N6—C16 | 1.501 (2) | C16—H16B | 0.9800 |
N6—C12 | 1.5125 (19) | C16—H16C | 0.9800 |
C1—C2 | 1.470 (2) | Cl1—O6 | 1.4414 (14) |
C1—C5 | 1.493 (2) | Cl1—O4 | 1.4423 (13) |
C2—C6 | 1.4929 (19) | Cl1—O5 | 1.4483 (14) |
C3—C4 | 1.519 (2) | Cl1—O3 | 1.4487 (14) |
C3—H3A | 0.9900 | Cl2—O10 | 1.436 (2) |
C3—H3B | 0.9900 | Cl2—O9 | 1.4425 (18) |
C4—H4A | 0.9900 | Cl2—O7 | 1.4459 (18) |
C4—H4B | 0.9900 | Cl2—O8 | 1.4499 (17) |
C5—H5A | 0.9800 | Cl2'—O10' | 1.289 (17) |
C5—H5B | 0.9800 | Cl2'—O7 | 1.366 (9) |
C5—H5C | 0.9800 | Cl2'—O8 | 1.441 (9) |
C6—H6A | 0.9800 | Cl2'—O9 | 1.91 (3) |
C6—H6B | 0.9800 | N7—C17 | 1.145 (2) |
C6—H6C | 0.9800 | C17—C18 | 1.458 (2) |
C7—H7A | 0.9800 | C18—H18A | 0.9800 |
C7—H7B | 0.9800 | C18—H18B | 0.9800 |
C7—H7C | 0.9800 | C18—H18C | 0.9800 |
C8—H8A | 0.9800 | ||
N2—Ni1—O2 | 169.20 (5) | N3—C8—H8A | 109.5 |
N2—Ni1—N1 | 82.55 (6) | N3—C8—H8B | 109.5 |
O2—Ni1—N1 | 101.43 (5) | H8A—C8—H8B | 109.5 |
N2—Ni1—N3 | 85.17 (6) | N3—C8—H8C | 109.5 |
O2—Ni1—N3 | 89.64 (5) | H8A—C8—H8C | 109.5 |
N1—Ni1—N3 | 166.31 (5) | H8B—C8—H8C | 109.5 |
N5—Ni2—O1 | 168.98 (5) | N4—C9—C10 | 111.86 (13) |
N5—Ni2—N4 | 82.93 (5) | N4—C9—C13 | 122.31 (13) |
O1—Ni2—N4 | 101.81 (5) | C10—C9—C13 | 125.82 (12) |
N5—Ni2—N6 | 86.59 (6) | N5—C10—C9 | 113.18 (12) |
O1—Ni2—N6 | 88.85 (5) | N5—C10—C14 | 124.49 (13) |
N4—Ni2—N6 | 169.34 (5) | C9—C10—C14 | 122.32 (14) |
C1—N1—O1 | 115.72 (12) | N5—C11—C12 | 105.87 (12) |
C1—N1—Ni1 | 115.23 (10) | N5—C11—H11A | 110.6 |
O1—N1—Ni1 | 128.94 (9) | C12—C11—H11A | 110.6 |
C2—N2—C3 | 125.28 (12) | N5—C11—H11B | 110.6 |
C2—N2—Ni1 | 116.90 (10) | C12—C11—H11B | 110.6 |
C3—N2—Ni1 | 117.65 (10) | H11A—C11—H11B | 108.7 |
C8—N3—C7 | 108.64 (12) | N6—C12—C11 | 109.50 (13) |
C8—N3—C4 | 108.60 (11) | N6—C12—H12A | 109.8 |
C7—N3—C4 | 110.96 (11) | C11—C12—H12A | 109.8 |
C8—N3—Ni1 | 115.91 (9) | N6—C12—H12B | 109.8 |
C7—N3—Ni1 | 107.11 (9) | C11—C12—H12B | 109.8 |
C4—N3—Ni1 | 105.60 (10) | H12A—C12—H12B | 108.2 |
C9—N4—O2 | 115.85 (12) | C9—C13—H13A | 109.5 |
C9—N4—Ni2 | 114.80 (10) | C9—C13—H13B | 109.5 |
O2—N4—Ni2 | 129.20 (9) | H13A—C13—H13B | 109.5 |
C10—N5—C11 | 125.75 (12) | C9—C13—H13C | 109.5 |
C10—N5—Ni2 | 116.89 (10) | H13A—C13—H13C | 109.5 |
C11—N5—Ni2 | 116.78 (10) | H13B—C13—H13C | 109.5 |
C15—N6—C16 | 109.11 (13) | C10—C14—H14A | 109.5 |
C15—N6—C12 | 110.81 (12) | C10—C14—H14B | 109.5 |
C16—N6—C12 | 107.25 (12) | H14A—C14—H14B | 109.5 |
C15—N6—Ni2 | 109.48 (10) | C10—C14—H14C | 109.5 |
C16—N6—Ni2 | 112.89 (10) | H14A—C14—H14C | 109.5 |
C12—N6—Ni2 | 107.29 (10) | H14B—C14—H14C | 109.5 |
N1—O1—Ni2 | 124.34 (9) | N6—C15—H15A | 109.5 |
N4—O2—Ni1 | 123.97 (9) | N6—C15—H15B | 109.5 |
N1—C1—C2 | 111.87 (13) | H15A—C15—H15B | 109.5 |
N1—C1—C5 | 123.34 (13) | N6—C15—H15C | 109.5 |
C2—C1—C5 | 124.79 (12) | H15A—C15—H15C | 109.5 |
N2—C2—C1 | 113.15 (12) | H15B—C15—H15C | 109.5 |
N2—C2—C6 | 124.57 (14) | N6—C16—H16A | 109.5 |
C1—C2—C6 | 122.28 (14) | N6—C16—H16B | 109.5 |
N2—C3—C4 | 105.14 (11) | H16A—C16—H16B | 109.5 |
N2—C3—H3A | 110.7 | N6—C16—H16C | 109.5 |
C4—C3—H3A | 110.7 | H16A—C16—H16C | 109.5 |
N2—C3—H3B | 110.7 | H16B—C16—H16C | 109.5 |
C4—C3—H3B | 110.7 | O6—Cl1—O4 | 109.57 (10) |
H3A—C3—H3B | 108.8 | O6—Cl1—O5 | 109.06 (10) |
N3—C4—C3 | 108.97 (12) | O4—Cl1—O5 | 109.02 (9) |
N3—C4—H4A | 109.9 | O6—Cl1—O3 | 109.61 (9) |
C3—C4—H4A | 109.9 | O4—Cl1—O3 | 109.80 (9) |
N3—C4—H4B | 109.9 | O5—Cl1—O3 | 109.76 (9) |
C3—C4—H4B | 109.9 | O10—Cl2—O9 | 106.9 (2) |
H4A—C4—H4B | 108.3 | O10—Cl2—O7 | 111.85 (16) |
C1—C5—H5A | 109.5 | O9—Cl2—O7 | 109.08 (11) |
C1—C5—H5B | 109.5 | O10—Cl2—O8 | 109.72 (13) |
H5A—C5—H5B | 109.5 | O9—Cl2—O8 | 109.79 (11) |
C1—C5—H5C | 109.5 | O7—Cl2—O8 | 109.50 (11) |
H5A—C5—H5C | 109.5 | O10'—Cl2'—O7 | 114.0 (11) |
H5B—C5—H5C | 109.5 | O10'—Cl2'—O8 | 120.7 (13) |
C2—C6—H6A | 109.5 | O7—Cl2'—O8 | 114.8 (7) |
C2—C6—H6B | 109.5 | O10'—Cl2'—O9 | 122.5 (11) |
H6A—C6—H6B | 109.5 | O7—Cl2'—O9 | 90.3 (11) |
C2—C6—H6C | 109.5 | O8—Cl2'—O9 | 88.7 (11) |
H6A—C6—H6C | 109.5 | N7—C17—C18 | 178.1 (2) |
H6B—C6—H6C | 109.5 | C17—C18—H18A | 109.5 |
N3—C7—H7A | 109.5 | C17—C18—H18B | 109.5 |
N3—C7—H7B | 109.5 | H18A—C18—H18B | 109.5 |
H7A—C7—H7B | 109.5 | C17—C18—H18C | 109.5 |
N3—C7—H7C | 109.5 | H18A—C18—H18C | 109.5 |
H7A—C7—H7C | 109.5 | H18B—C18—H18C | 109.5 |
H7B—C7—H7C | 109.5 |
[Ni2(C13H18N3O)2](ClO4)2 | F(000) = 808 |
Mr = 780.93 | Dx = 1.682 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 8729 reflections |
a = 12.5432 (5) Å | θ = 3.0–46.9° |
b = 8.9714 (4) Å | µ = 1.46 mm−1 |
c = 13.7277 (5) Å | T = 100 K |
β = 93.745 (2)° | Parallelepiped, red |
V = 1541.48 (11) Å3 | 0.45 × 0.44 × 0.32 mm |
Z = 2 |
Bruker D8-APEXII CCD diffratometer diffractometer | 14182 independent reflections |
Radiation source: fine-focus sealed tube, Siemens KFFMO2K-90 | 12434 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.027 |
Detector resolution: 8.33 pixels mm-1 | θmax = 47.3°, θmin = 2.1° |
ϕ and ω scans | h = −25→25 |
Absorption correction: multi-scan (SADABS; Blessing, 1995; Sheldrick, 2004) | k = −18→18 |
Tmin = 0.54, Tmax = 0.63 | l = −23→28 |
124421 measured reflections |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.023 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.063 | H-atom parameters constrained |
S = 1.03 | w = 1/[σ2(Fo2) + (0.0309P)2 + 0.342P] where P = (Fo2 + 2Fc2)/3 |
14182 reflections | (Δ/σ)max = 0.006 |
211 parameters | Δρmax = 0.71 e Å−3 |
0 restraints | Δρmin = −0.81 e Å−3 |
[Ni2(C13H18N3O)2](ClO4)2 | V = 1541.48 (11) Å3 |
Mr = 780.93 | Z = 2 |
Monoclinic, P21/n | Mo Kα radiation |
a = 12.5432 (5) Å | µ = 1.46 mm−1 |
b = 8.9714 (4) Å | T = 100 K |
c = 13.7277 (5) Å | 0.45 × 0.44 × 0.32 mm |
β = 93.745 (2)° |
Bruker D8-APEXII CCD diffratometer diffractometer | 14182 independent reflections |
Absorption correction: multi-scan (SADABS; Blessing, 1995; Sheldrick, 2004) | 12434 reflections with I > 2σ(I) |
Tmin = 0.54, Tmax = 0.63 | Rint = 0.027 |
124421 measured reflections |
R[F2 > 2σ(F2)] = 0.023 | 0 restraints |
wR(F2) = 0.063 | H-atom parameters constrained |
S = 1.03 | Δρmax = 0.71 e Å−3 |
14182 reflections | Δρmin = −0.81 e Å−3 |
211 parameters |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes. |
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. |
x | y | z | Uiso*/Ueq | ||
Ni1 | 0.358320 (4) | −0.043197 (7) | 1.006326 (4) | 0.00809 (1) | |
N1 | 0.42907 (3) | 0.05552 (5) | 0.90814 (3) | 0.01025 (5) | |
N2 | 0.23885 (3) | −0.00347 (5) | 0.92501 (3) | 0.00943 (5) | |
N3 | 0.26006 (3) | −0.13805 (4) | 1.09096 (3) | 0.00914 (5) | |
O1 | 0.53194 (3) | 0.08673 (5) | 0.90320 (3) | 0.01458 (6) | |
C1 | 0.36720 (3) | 0.09945 (5) | 0.83270 (3) | 0.01062 (6) | |
C2 | 0.25455 (3) | 0.06414 (5) | 0.84395 (3) | 0.00973 (6) | |
C3 | 0.13600 (3) | −0.05421 (5) | 0.95711 (4) | 0.01033 (6) | |
H3A | 0.0889 | −0.0889 | 0.9009 | 0.012* | |
H3B | 0.0995 | 0.0269 | 0.9907 | 0.012* | |
C4 | 0.16402 (4) | −0.18163 (5) | 1.02666 (4) | 0.01119 (6) | |
H4A | 0.1031 | −0.2030 | 1.0669 | 0.013* | |
H4B | 0.1796 | −0.2726 | 0.9894 | 0.013* | |
C5 | 0.40862 (4) | 0.17912 (7) | 0.74828 (4) | 0.01506 (8) | |
H5A | 0.4501 | 0.2661 | 0.7716 | 0.023* | |
H5B | 0.3486 | 0.2119 | 0.7041 | 0.023* | |
H5C | 0.4545 | 0.1120 | 0.7133 | 0.023* | |
C6 | 0.16923 (3) | 0.10385 (5) | 0.76893 (3) | 0.01051 (6) | |
C7 | 0.08698 (4) | 0.20112 (6) | 0.79101 (4) | 0.01384 (7) | |
H7 | 0.0849 | 0.2417 | 0.8548 | 0.017* | |
C8 | 0.00821 (4) | 0.23796 (7) | 0.71875 (5) | 0.01796 (9) | |
H8 | −0.0472 | 0.3051 | 0.7331 | 0.022* | |
C9 | 0.01015 (5) | 0.17700 (8) | 0.62577 (5) | 0.01941 (10) | |
H9 | −0.0444 | 0.2012 | 0.5771 | 0.023* | |
C10 | 0.09229 (5) | 0.08030 (8) | 0.60400 (4) | 0.01837 (9) | |
H10 | 0.0935 | 0.0386 | 0.5405 | 0.022* | |
C11 | 0.17252 (4) | 0.04461 (6) | 0.67508 (4) | 0.01449 (7) | |
H11 | 0.2292 | −0.0197 | 0.6598 | 0.017* | |
C12 | 0.30081 (4) | −0.27151 (6) | 1.14514 (4) | 0.01414 (7) | |
H12A | 0.3599 | −0.2426 | 1.1915 | 0.021* | |
H12B | 0.3261 | −0.3448 | 1.0990 | 0.021* | |
H12C | 0.2433 | −0.3153 | 1.1807 | 0.021* | |
C13 | 0.23181 (4) | −0.02382 (6) | 1.16328 (4) | 0.01378 (7) | |
H13A | 0.1762 | −0.0633 | 1.2031 | 0.021* | |
H13B | 0.2052 | 0.0659 | 1.1289 | 0.021* | |
H13C | 0.2953 | 0.0013 | 1.2055 | 0.021* | |
Cl1 | 0.142557 (9) | 0.386799 (13) | 0.063931 (9) | 0.01254 (2) | |
O2 | 0.14788 (6) | 0.45258 (6) | −0.03107 (4) | 0.02955 (13) | |
O3 | 0.24755 (4) | 0.33887 (7) | 0.10036 (6) | 0.03133 (13) | |
O4 | 0.10295 (4) | 0.49481 (5) | 0.13006 (4) | 0.01838 (7) | |
O5 | 0.07149 (4) | 0.25969 (5) | 0.05740 (4) | 0.01922 (8) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Ni1 | 0.00667 (2) | 0.01042 (2) | 0.00710 (2) | −0.00130 (1) | −0.00007 (1) | 0.00224 (2) |
N1 | 0.00727 (11) | 0.01415 (13) | 0.00926 (13) | −0.00142 (10) | −0.00005 (9) | 0.00345 (11) |
N2 | 0.00776 (11) | 0.01212 (13) | 0.00837 (12) | −0.00109 (9) | 0.00022 (9) | 0.00170 (10) |
N3 | 0.00908 (11) | 0.00984 (11) | 0.00847 (12) | −0.00163 (9) | 0.00022 (9) | 0.00123 (10) |
O1 | 0.00702 (11) | 0.02406 (17) | 0.01244 (14) | −0.00319 (11) | −0.00107 (10) | 0.00865 (13) |
C1 | 0.00817 (13) | 0.01456 (15) | 0.00905 (15) | −0.00060 (11) | −0.00001 (11) | 0.00356 (12) |
C2 | 0.00831 (12) | 0.01262 (14) | 0.00820 (14) | −0.00015 (10) | 0.00001 (10) | 0.00166 (11) |
C3 | 0.00814 (13) | 0.01330 (15) | 0.00954 (15) | −0.00159 (11) | 0.00043 (11) | 0.00097 (12) |
C4 | 0.01055 (14) | 0.01200 (14) | 0.01085 (16) | −0.00348 (11) | −0.00072 (11) | 0.00120 (12) |
C5 | 0.01142 (15) | 0.0218 (2) | 0.01189 (17) | −0.00131 (14) | 0.00058 (13) | 0.00757 (15) |
C6 | 0.00862 (13) | 0.01405 (15) | 0.00872 (14) | −0.00014 (11) | −0.00046 (11) | 0.00187 (12) |
C7 | 0.01150 (15) | 0.01692 (17) | 0.01299 (17) | 0.00253 (13) | −0.00010 (13) | 0.00111 (14) |
C8 | 0.01228 (16) | 0.0221 (2) | 0.0192 (2) | 0.00379 (15) | −0.00147 (15) | 0.00537 (18) |
C9 | 0.01351 (17) | 0.0278 (3) | 0.0161 (2) | −0.00163 (17) | −0.00523 (15) | 0.00718 (19) |
C10 | 0.01669 (19) | 0.0277 (2) | 0.01019 (17) | −0.00312 (18) | −0.00283 (14) | 0.00120 (17) |
C11 | 0.01326 (16) | 0.0204 (2) | 0.00973 (16) | 0.00041 (14) | −0.00012 (13) | −0.00033 (14) |
C12 | 0.01342 (16) | 0.01257 (15) | 0.01622 (19) | −0.00167 (12) | −0.00059 (14) | 0.00579 (14) |
C13 | 0.01533 (17) | 0.01586 (17) | 0.01016 (16) | −0.00004 (13) | 0.00083 (13) | −0.00209 (13) |
Cl1 | 0.01217 (4) | 0.01125 (4) | 0.01426 (4) | −0.00274 (3) | 0.00139 (3) | −0.00083 (3) |
O2 | 0.0512 (4) | 0.0241 (2) | 0.01441 (19) | −0.0085 (2) | 0.0106 (2) | 0.00060 (16) |
O3 | 0.01296 (16) | 0.0264 (2) | 0.0536 (4) | 0.00139 (16) | −0.0055 (2) | −0.0024 (2) |
O4 | 0.02199 (18) | 0.01657 (15) | 0.01697 (17) | −0.00413 (13) | 0.00437 (14) | −0.00542 (13) |
O5 | 0.01664 (15) | 0.01212 (13) | 0.0288 (2) | −0.00528 (12) | 0.00102 (15) | −0.00293 (14) |
Ni1—O1i | 1.8348 (4) | C5—H5C | 0.9800 |
Ni1—N2 | 1.8439 (4) | C6—C11 | 1.3968 (7) |
Ni1—N1 | 1.8827 (4) | C6—C7 | 1.3995 (7) |
Ni1—N3 | 1.9442 (4) | C7—C8 | 1.3934 (8) |
N1—C1 | 1.3135 (6) | C7—H7 | 0.9500 |
N1—O1 | 1.3264 (5) | C8—C9 | 1.3902 (10) |
N2—C2 | 1.2936 (6) | C8—H8 | 0.9500 |
N2—C3 | 1.4629 (6) | C9—C10 | 1.3942 (10) |
N3—C12 | 1.4827 (6) | C9—H9 | 0.9500 |
N3—C13 | 1.4857 (6) | C10—C11 | 1.3925 (8) |
N3—C4 | 1.4982 (6) | C10—H10 | 0.9500 |
O1—Ni1i | 1.8348 (4) | C11—H11 | 0.9500 |
C1—C2 | 1.4661 (6) | C12—H12A | 0.9800 |
C1—C5 | 1.4841 (7) | C12—H12B | 0.9800 |
C2—C6 | 1.4795 (6) | C12—H12C | 0.9800 |
C3—C4 | 1.5160 (7) | C13—H13A | 0.9800 |
C3—H3A | 0.9900 | C13—H13B | 0.9800 |
C3—H3B | 0.9900 | C13—H13C | 0.9800 |
C4—H4A | 0.9900 | Cl1—O2 | 1.4370 (6) |
C4—H4B | 0.9900 | Cl1—O4 | 1.4384 (5) |
C5—H5A | 0.9800 | Cl1—O3 | 1.4433 (6) |
C5—H5B | 0.9800 | Cl1—O5 | 1.4466 (4) |
O1i—Ni1—N2 | 174.274 (17) | C1—C5—H5C | 109.5 |
O1i—Ni1—N1 | 102.525 (17) | H5A—C5—H5C | 109.5 |
N2—Ni1—N1 | 82.999 (17) | H5B—C5—H5C | 109.5 |
O1i—Ni1—N3 | 88.804 (17) | C11—C6—C7 | 120.24 (5) |
N2—Ni1—N3 | 85.674 (17) | C11—C6—C2 | 119.13 (4) |
N1—Ni1—N3 | 168.671 (17) | C7—C6—C2 | 120.62 (4) |
C1—N1—O1 | 115.02 (4) | C8—C7—C6 | 119.49 (5) |
C1—N1—Ni1 | 115.08 (3) | C8—C7—H7 | 120.3 |
O1—N1—Ni1 | 129.90 (3) | C6—C7—H7 | 120.3 |
C2—N2—C3 | 126.28 (4) | C9—C8—C7 | 120.41 (5) |
C2—N2—Ni1 | 116.62 (3) | C9—C8—H8 | 119.8 |
C3—N2—Ni1 | 117.09 (3) | C7—C8—H8 | 119.8 |
C12—N3—C13 | 108.14 (4) | C8—C9—C10 | 119.94 (5) |
C12—N3—C4 | 108.80 (4) | C8—C9—H9 | 120.0 |
C13—N3—C4 | 110.85 (4) | C10—C9—H9 | 120.0 |
C12—N3—Ni1 | 116.23 (3) | C11—C10—C9 | 120.21 (6) |
C13—N3—Ni1 | 106.59 (3) | C11—C10—H10 | 119.9 |
C4—N3—Ni1 | 106.19 (3) | C9—C10—H10 | 119.9 |
N1—O1—Ni1i | 127.57 (3) | C10—C11—C6 | 119.69 (5) |
N1—C1—C2 | 112.08 (4) | C10—C11—H11 | 120.2 |
N1—C1—C5 | 122.78 (4) | C6—C11—H11 | 120.2 |
C2—C1—C5 | 125.12 (4) | N3—C12—H12A | 109.5 |
N2—C2—C1 | 113.19 (4) | N3—C12—H12B | 109.5 |
N2—C2—C6 | 124.60 (4) | H12A—C12—H12B | 109.5 |
C1—C2—C6 | 122.20 (4) | N3—C12—H12C | 109.5 |
N2—C3—C4 | 104.57 (4) | H12A—C12—H12C | 109.5 |
N2—C3—H3A | 110.8 | H12B—C12—H12C | 109.5 |
C4—C3—H3A | 110.8 | N3—C13—H13A | 109.5 |
N2—C3—H3B | 110.8 | N3—C13—H13B | 109.5 |
C4—C3—H3B | 110.8 | H13A—C13—H13B | 109.5 |
H3A—C3—H3B | 108.9 | N3—C13—H13C | 109.5 |
N3—C4—C3 | 108.58 (4) | H13A—C13—H13C | 109.5 |
N3—C4—H4A | 110.0 | H13B—C13—H13C | 109.5 |
C3—C4—H4A | 110.0 | O2—Cl1—O4 | 109.55 (3) |
N3—C4—H4B | 110.0 | O2—Cl1—O3 | 109.96 (5) |
C3—C4—H4B | 110.0 | O4—Cl1—O3 | 109.08 (4) |
H4A—C4—H4B | 108.4 | O2—Cl1—O5 | 109.42 (4) |
C1—C5—H5A | 109.5 | O4—Cl1—O5 | 109.47 (3) |
C1—C5—H5B | 109.5 | O3—Cl1—O5 | 109.34 (3) |
H5A—C5—H5B | 109.5 |
Symmetry code: (i) −x+1, −y, −z+2. |
Experimental details
(I) | (II) | |
Crystal data | ||
Chemical formula | [Ni2(C8H16N3O)2](ClO4)2·C2H3N | [Ni2(C13H18N3O)2](ClO4)2 |
Mr | 697.85 | 780.93 |
Crystal system, space group | Monoclinic, P21/n | Monoclinic, P21/n |
Temperature (K) | 100 | 100 |
a, b, c (Å) | 13.1320 (3), 12.2045 (3), 17.2959 (5) | 12.5432 (5), 8.9714 (4), 13.7277 (5) |
β (°) | 91.6220 (14) | 93.745 (2) |
V (Å3) | 2770.89 (12) | 1541.48 (11) |
Z | 4 | 2 |
Radiation type | Mo Kα | Mo Kα |
µ (mm−1) | 1.62 | 1.46 |
Crystal size (mm) | 0.23 × 0.22 × 0.14 | 0.45 × 0.44 × 0.32 |
Data collection | ||
Diffractometer | Bruker D8-APEXII CCD diffractometer | Bruker D8-APEXII CCD diffratometer diffractometer |
Absorption correction | Multi-scan (TWINABS; Blessing, 1995; Sheldrick, 2004) | Multi-scan (SADABS; Blessing, 1995; Sheldrick, 2004) |
Tmin, Tmax | 0.708, 0.806 | 0.54, 0.63 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 290302, 14483, 12536 | 124421, 14182, 12434 |
Rint | 0.075 | 0.027 |
(sin θ/λ)max (Å−1) | 0.735 | 1.033 |
Refinement | ||
R[F2 > 2σ(F2)], wR(F2), S | 0.035, 0.095, 1.06 | 0.023, 0.063, 1.03 |
No. of reflections | 14483 | 14182 |
No. of parameters | 375 | 211 |
H-atom treatment | H-atom parameters constrained | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.84, −0.48 | 0.71, −0.81 |
Computer programs: APEX2 (Bruker, 2004), APEX2 and SAINT (Bruker, 2004), SAINT (Bruker, 2004) and XPREP (Sheldrick, 2003), XS (Sheldrick, 2001), XL (Sheldrick, 2001), XP (Sheldrick, 1998), XCIF (Sheldrick, 2001) and enCIFer (Allen et al., 2004).
Ni1—N2 | 1.8519 (12) | Ni2—N5 | 1.8420 (12) |
Ni1—O2 | 1.8660 (10) | Ni2—O1 | 1.8471 (10) |
Ni1—N1 | 1.8888 (13) | Ni2—N4 | 1.8866 (13) |
Ni1—N3 | 1.9598 (13) | Ni2—N6 | 1.9531 (14) |
N2—Ni1—O2 | 169.20 (5) | N5—Ni2—O1 | 168.98 (5) |
N2—Ni1—N1 | 82.55 (6) | N5—Ni2—N4 | 82.93 (5) |
O2—Ni1—N1 | 101.43 (5) | O1—Ni2—N4 | 101.81 (5) |
N2—Ni1—N3 | 85.17 (6) | N5—Ni2—N6 | 86.59 (6) |
O2—Ni1—N3 | 89.64 (5) | O1—Ni2—N6 | 88.85 (5) |
N1—Ni1—N3 | 166.31 (5) | N4—Ni2—N6 | 169.34 (5) |
Ni1—O1i | 1.8348 (4) | Ni1—N1 | 1.8827 (4) |
Ni1—N2 | 1.8439 (4) | Ni1—N3 | 1.9442 (4) |
O1i—Ni1—N2 | 174.274 (17) | O1i—Ni1—N3 | 88.804 (17) |
O1i—Ni1—N1 | 102.525 (17) | N2—Ni1—N3 | 85.674 (17) |
N2—Ni1—N1 | 82.999 (17) | N1—Ni1—N3 | 168.671 (17) |
Symmetry code: (i) −x+1, −y, −z+2. |
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There are many nickel(II) complexes with ligands incorporating oximate donors that have been shown to stabilize the nickel(III) and nickel(IV) oxidation states at low potential (Mohanty et al., 1975, Singh et al., 1977; Singh & Chakravorty, 1980; Kruger et al., 1991; Berkessel et al., 1996). Such complexes in different oxidation states have a strong role in bioinorganic chemistry and redox enzyme systems (Lancaster, 1988; Kolodziej, 1994), and may provide the basis for models for active sites of biological systems (Parashar et al., 1988; West et al., 1993) or may act as catalysts (Beley et al., 1986; Fujita et al., 1994; Kimura et al., 1994). Oximes represent a very important class of ligands in coordination chemistry (Kukushkin & Pombeiro, 1999; Chaudhuri, 2003). Recent interest in oxime ligands is mostly due to the remarkable ability of the deprotonated oximato groups to form bridges between metal ions, giving rise to polynuclear complexes of different nuclearity with different types of oximate bridges (Costes et al., 1998; Colacio et al., 1997; Cervera et al., 1997). The vast majority of oximate complexes published during the past 15 years have dealt with the synthesis and study of magnetic properties of polynuclear µ-oximato complexes (Pavlishchuk et al., 2001, 2003). These complexes exhibit octahedral coordination geometry at the nickel(II) centers. Recently, Goldcamp et al. (2002) reported that the ligand tris(2-hydroxyiminopropyl)amine binds to the NiII ion in multiple protonation states, yielding mononuclear and oximate-bridged dinuclear complexes. The dinuclear complex of the fully deprotonated ligand in acetonitrile undergoes oxidation by O2 and this system oxidizes PPh3 with incorporation of oxygen from O2. With a similar system, they also reported substrate oxidation by the first NiII + O2 reaction that does not proceed via irreversible ligand oxidation (Edison et al., 2004). We report here the synthesis and X-ray structure of two oximate-bridged square-planar dinuclear nickel(II) complexes, (I) and (II).
Complex (I) (Fig. 1 and Table 1) consists of a dinuclear [NiII2(µ-L1)2]2+ cation, two perchlorate anions, and one molecule of acetonitrile located 2.5118 (17) Å from atom Ni1. Complex (II) is composed of a dinuclear [NiII2(µ-L2)2]2+ cation and two perchlorate anions. The cations represent the first examples of oximate-bridged square-planar dinickel(II/II) complexes. Each cation involves two dianionic ligands and two nickel(II) cations. The coordination geometries around each nickel(II) ion in (I) and (II) are best described as distorted square-planar N3O environments. One amine N, one imine N, one oxime N and one oximate O atoms satisfy the square-planar coordination geometry of each nickel(II) ion.
Around atom Ni1 of (I), the four donor atoms alternate above and below the mean plane by 0.02 Å. Atom Ni1 is displaced 0.138 Å from this plane towards acetonitrile atom N7. The atoms coordinated to Ni2 show greater deviation than those around Ni1, alternating ~0.09 Å above and below the mean plane. Atom Ni2 is displaced 0.072 Å from this plane. The angle between these two planes is 22.2°.
In complex (II) (Fig. 2), the deviations from the plane of the four donor atoms are approximately 0.013 Å, alternating above and below the plane. Atom Ni1 lies 0.012 Å out of the mean basal plane. Because of crystallographically imposed inversion symmetry, the coordination planes of the two metal centers are coincident.
In both (I) and (II), three N atoms of each ligand are coordinated to one metal center, forming two five-membered (N—Ni—N) chelate rings. The average chelate bite angles for the five-membered rings in (I) and (II) are in the range 82.74 (5)–85.88 (6)° and 82.99 (17)–85.67 (17)°, respectively. In complexes (I) and (II), a central six-membered dimetallic chelate ring (Ni1/N1/O1/Ni2/N4/O2 and Ni1/N1/O1/Ni1A/N1A/O1A, respectively), is formed through the coordination of oxime N and oximate O atoms to each nickel(II) ion in a trans arrangement. The average C—N and N—O distances of the –(CH3)C═N—O– oximate groups are 1.318 (17) and 1.338 (15) Å, respectively, in (I) and 1.313 (6) and 1.326 (5) Å, respectively, in (II). These distances are consistent with the deprotonated form of oxime functional groups (Bera et al., 2006; Gupta Sreerama & Pal, 2002; Birkelbach et al., 1997; Pal et al., 1986). The C═ Nimine distances are significantly shorter than the C═Noximate distances in both complexes. The intradimer Ni···Ni distances are 3.602 Å in (I) and 3.653 Å in (II), which are consistent with that in the octahedral dinickel(II) complex reported by Goldcamp et al. (2002) but larger than those in other square-planar dinickel(II) systems (Rispens et al., 1996; Brooker et al., 2000; Aukauloo et al., 1999).
An interesting feature of the crystal structure lies in the packing of (I) (Fig. 3). In the structure of (I), the geometry of the perchlorate groups shows some typical disorder. The disordered perchlorate anion fills the channels that run parallel to the b-axis direction. The other perchlorate anion is in pockets surrounded by cations. Within the channels the uncoordinated acetonitrile molecule makes a 2.513 Å contact with the Ni1 ion. The Ni—N—C contact angle is 172.75°. There are no such channels in (II).