Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536807020673/bt2334sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S1600536807020673/bt2334Isup2.hkl |
CCDC reference: 646686
The title complex was synthesized by dissolving N,N'-bis(pyrrol-2- ylmethylene)cyclohexylenediamine (1 mmol, 268 mg) in ethanol (15 ml), with the addition of nickel(II) acetate (1 mmol, 212 mg) dissolved in distilled water (5 ml). The mixture was stirred at room temperature for 2 h and the resulting red–brown precipitate was filtered, dried and chromatographed on silica gel eluted with CHCl3. Crystals suitable for X-ray diffraction analysis were obtained by recrystallization from a CHCl3 solution. Elemental composition, calculated: C 59.12, H 5.58, N 17.24%; found: C 59.14, H 5.45, N 17.35%. M+ = 324 g mol-1. 1H NMR (300 MHz, CDCl3, 298 K, TMS): 7.23 (s, 2H, H imine), 6.80 (s, 2H, H pyrrole α), 6.59 (t, J = 3.6 Hz, 2H, H pyrrole γ), 6.13 (t, J = 3.0 Hz, 2H, H
pyrrole β), 3.34 (t, J = 3.5 Hz, 2H, CH), 2.24–1.31 (m, 8H, CH2).
The two cyclohexane-1,2-diamine groups are disordered, with site-occupation factors of 0.495 (15) for atoms C6 and C11, 0.505 (15) for atoms C6' and C11', and 0.50 (3) for atoms C22, C27, C22' and C27'. H atoms were positioned geometrically and allowed to ride on their parent C atoms, with C—H ranging from 0.93 to 0.98 Å and Uiso(H) = 1.2Ueq(C).
salen ligands (salen = N,N'-bis(salicyldene)ethylenediamine) and their complexes have received continuous and intensive attention because of their capabilities to serve as catalysts of organic reactions (Baleizao & Garcia, 2006), models of catalytic centers of metalloenzymes (Maruyama et al., 1990; Carey et al., 2004) and nonlinear optical materials (Rigamonti et al., 2006; Tedim et al., 2006). On the contrary, little is known about the ligand behaviour of the analogous compounds derived from pyrrole 2-carboxaldehyde and about the properties of their complexes (Weber, 1967; Downing & Urbach, 1971; Bacchi et al., 2003, Bella et al., 2004). In the present work, we have prepared the title compound (I) and determined its crystal structure.
The complex crystallizes with two crystallographically independent, but quite similar molecules in the asymmetric unit. In both molecules, the ligand is bideprotonated and the Ni(II) ion is tetracoordinated in a square planar environment, with the pyrrole and imine nitrogen atoms as donors. The coordination induces the formation of three five-membered chelate rings, and the N—Ni—N angles are less than 90°. The Ni—N (pyrrole) distances are significantly longer than the Ni—N (imine) distances.
For related literature, see: Bacchi et al. (2003); Baleizao & Garcia (2006); Bella et al. (2004); Carey et al. (2004); Downing & Urbach (1971); Maruyama et al. (1990); Rigamonti et al. (2006); Tedim et al. (2006); Weber (1967).
Data collection: SMART (Bruker, 1998); cell refinement: SAINT (Bruker, 1998); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: SHELXTL (Bruker, 1998); software used to prepare material for publication: SHELXL97.
[Ni(C16H18N4)] | F(000) = 1360 |
Mr = 325.05 | Dx = 1.442 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
a = 21.379 (3) Å | Cell parameters from 4354 reflections |
b = 8.6247 (10) Å | θ = 2.5–25.5° |
c = 17.475 (2) Å | µ = 1.29 mm−1 |
β = 111.697 (2)° | T = 294 K |
V = 2993.9 (6) Å3 | Block, red |
Z = 8 | 0.26 × 0.22 × 0.18 mm |
Bruker SMART CCD area-detector diffractometer | 6100 independent reflections |
Radiation source: fine-focus sealed tube | 4081 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.040 |
φ and ω scans | θmax = 26.4°, θmin = 1.0° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −26→25 |
Tmin = 0.730, Tmax = 0.800 | k = −10→7 |
16412 measured reflections | l = −20→21 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.061 | H-atom parameters constrained |
wR(F2) = 0.136 | w = 1/[σ2(Fo2) + 10.3102P] where P = (Fo2 + 2Fc2)/3 |
S = 1.15 | (Δ/σ)max = 0.001 |
6100 reflections | Δρmax = 0.39 e Å−3 |
418 parameters | Δρmin = −0.41 e Å−3 |
12 restraints | Extinction correction: SHELXL97 (Sheldrick, 1997), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.00459 (17) |
[Ni(C16H18N4)] | V = 2993.9 (6) Å3 |
Mr = 325.05 | Z = 8 |
Monoclinic, P21/c | Mo Kα radiation |
a = 21.379 (3) Å | µ = 1.29 mm−1 |
b = 8.6247 (10) Å | T = 294 K |
c = 17.475 (2) Å | 0.26 × 0.22 × 0.18 mm |
β = 111.697 (2)° |
Bruker SMART CCD area-detector diffractometer | 6100 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 4081 reflections with I > 2σ(I) |
Tmin = 0.730, Tmax = 0.800 | Rint = 0.040 |
16412 measured reflections |
R[F2 > 2σ(F2)] = 0.061 | 12 restraints |
wR(F2) = 0.136 | H-atom parameters constrained |
S = 1.15 | w = 1/[σ2(Fo2) + 10.3102P] where P = (Fo2 + 2Fc2)/3 |
6100 reflections | Δρmax = 0.39 e Å−3 |
418 parameters | Δρmin = −0.41 e Å−3 |
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 | Occ. (<1) | |
Ni1 | 1.03966 (3) | 0.31724 (8) | 0.46424 (4) | 0.0414 (2) | |
Ni2 | 0.46464 (3) | 0.30951 (8) | 0.42360 (4) | 0.0433 (2) | |
N1 | 1.0592 (2) | 0.4251 (5) | 0.3818 (3) | 0.0465 (11) | |
N2 | 0.9512 (2) | 0.3281 (5) | 0.3915 (3) | 0.0474 (11) | |
N3 | 1.0027 (2) | 0.2221 (5) | 0.5330 (3) | 0.0469 (11) | |
N4 | 1.1217 (2) | 0.3006 (5) | 0.5555 (3) | 0.0459 (11) | |
N5 | 0.4469 (3) | 0.4146 (5) | 0.3230 (3) | 0.0508 (12) | |
N6 | 0.5536 (2) | 0.3479 (5) | 0.4403 (3) | 0.0515 (12) | |
N7 | 0.4986 (2) | 0.2207 (5) | 0.5273 (3) | 0.0449 (11) | |
N8 | 0.3804 (2) | 0.2682 (5) | 0.4305 (3) | 0.0437 (11) | |
C1 | 1.1105 (3) | 0.4849 (7) | 0.3641 (4) | 0.0562 (15) | |
H1 | 1.1558 | 0.4715 | 0.3962 | 0.067* | |
C2 | 1.0866 (4) | 0.5684 (8) | 0.2921 (4) | 0.0667 (18) | |
H2 | 1.1124 | 0.6202 | 0.2675 | 0.080* | |
C3 | 1.0173 (4) | 0.5614 (7) | 0.2631 (4) | 0.0613 (17) | |
H3 | 0.9876 | 0.6084 | 0.2157 | 0.074* | |
C4 | 1.0007 (3) | 0.4706 (6) | 0.3183 (3) | 0.0482 (14) | |
C5 | 0.9415 (3) | 0.4129 (7) | 0.3273 (3) | 0.0542 (15) | |
H5 | 0.8986 | 0.4350 | 0.2895 | 0.065* | |
C6 | 0.9065 (4) | 0.2229 (14) | 0.4133 (6) | 0.047 (4) | 0.495 (15) |
H6A | 0.9163 | 0.1172 | 0.4006 | 0.056* | 0.495 (15) |
C11 | 0.9294 (4) | 0.2363 (14) | 0.5065 (7) | 0.047 (4) | 0.495 (15) |
H11A | 0.9185 | 0.3402 | 0.5205 | 0.057* | 0.495 (15) |
C6' | 0.9007 (4) | 0.2944 (15) | 0.4278 (6) | 0.050 (4) | 0.505 (15) |
H6B | 0.8968 | 0.3850 | 0.4596 | 0.060* | 0.505 (15) |
C11' | 0.9339 (4) | 0.1640 (15) | 0.4875 (6) | 0.050 (4) | 0.505 (15) |
H11B | 0.9373 | 0.0735 | 0.4553 | 0.060* | 0.505 (15) |
C22 | 0.6002 (8) | 0.249 (3) | 0.5056 (13) | 0.057 (5) | 0.50 (3) |
H22A | 0.5986 | 0.1425 | 0.4848 | 0.068* | 0.50 (3) |
C27 | 0.5722 (7) | 0.251 (3) | 0.5742 (11) | 0.046 (4) | 0.50 (3) |
H27A | 0.5767 | 0.3567 | 0.5959 | 0.056* | 0.50 (3) |
C22' | 0.6023 (7) | 0.322 (3) | 0.5298 (11) | 0.050 (5) | 0.50 (3) |
H22B | 0.5981 | 0.4097 | 0.5631 | 0.060* | 0.50 (3) |
C27' | 0.5723 (7) | 0.183 (3) | 0.5538 (12) | 0.046 (4) | 0.50 (3) |
H27B | 0.5773 | 0.0947 | 0.5214 | 0.055* | 0.50 (3) |
C7 | 0.8311 (3) | 0.2486 (8) | 0.3704 (4) | 0.0646 (18) | |
H7A | 0.8220 | 0.3590 | 0.3691 | 0.078* | 0.495 (15) |
H7B | 0.8174 | 0.2133 | 0.3138 | 0.078* | 0.495 (15) |
H7C | 0.8074 | 0.3414 | 0.3436 | 0.078* | 0.505 (15) |
H7D | 0.8353 | 0.1818 | 0.3278 | 0.078* | 0.505 (15) |
C8 | 0.7908 (4) | 0.1694 (14) | 0.4093 (5) | 0.129 (4) | |
H8A | 0.7676 | 0.0857 | 0.3728 | 0.155* | |
H8B | 0.7565 | 0.2421 | 0.4104 | 0.155* | |
C9 | 0.8204 (4) | 0.1035 (12) | 0.4915 (6) | 0.113 (3) | |
H9A | 0.8095 | −0.0061 | 0.4868 | 0.136* | |
H9B | 0.7973 | 0.1494 | 0.5244 | 0.136* | |
C10 | 0.8935 (3) | 0.1169 (7) | 0.5396 (4) | 0.0586 (16) | |
H10A | 0.9143 | 0.0165 | 0.5406 | 0.070* | 0.495 (15) |
H10B | 0.9001 | 0.1440 | 0.5959 | 0.070* | 0.495 (15) |
H10C | 0.9102 | 0.0181 | 0.5656 | 0.070* | 0.505 (15) |
H10D | 0.9007 | 0.1930 | 0.5829 | 0.070* | 0.505 (15) |
C12 | 1.0435 (3) | 0.2008 (6) | 0.6084 (3) | 0.0508 (14) | |
H12 | 1.0295 | 0.1614 | 0.6490 | 0.061* | |
C13 | 1.1108 (3) | 0.2424 (6) | 0.6237 (3) | 0.0479 (14) | |
C14 | 1.1706 (3) | 0.2436 (7) | 0.6910 (4) | 0.0601 (16) | |
H14 | 1.1770 | 0.2104 | 0.7439 | 0.072* | |
C15 | 1.2192 (3) | 0.3041 (8) | 0.6645 (4) | 0.0642 (17) | |
H15 | 1.2644 | 0.3198 | 0.6963 | 0.077* | |
C16 | 1.1871 (3) | 0.3367 (6) | 0.5807 (4) | 0.0514 (14) | |
H16 | 1.2082 | 0.3776 | 0.5472 | 0.062* | |
C17 | 0.3959 (4) | 0.4642 (7) | 0.2550 (4) | 0.0617 (17) | |
H17 | 0.3508 | 0.4398 | 0.2417 | 0.074* | |
C18 | 0.4210 (4) | 0.5572 (8) | 0.2080 (4) | 0.072 (2) | |
H18 | 0.3959 | 0.6039 | 0.1580 | 0.086* | |
C19 | 0.4893 (4) | 0.5680 (7) | 0.2480 (4) | 0.071 (2) | |
H19 | 0.5191 | 0.6250 | 0.2317 | 0.085* | |
C20 | 0.5050 (4) | 0.4761 (7) | 0.3185 (4) | 0.0573 (16) | |
C21 | 0.5638 (3) | 0.4361 (7) | 0.3859 (4) | 0.0609 (17) | |
H21 | 0.6064 | 0.4702 | 0.3909 | 0.073* | |
C23 | 0.6741 (3) | 0.3039 (9) | 0.5423 (4) | 0.0725 (19) | |
H23A | 0.6960 | 0.2780 | 0.5042 | 0.087* | 0.50 (3) |
H23B | 0.6747 | 0.4158 | 0.5477 | 0.087* | 0.50 (3) |
H23C | 0.6779 | 0.2379 | 0.4992 | 0.087* | 0.50 (3) |
H23D | 0.6929 | 0.4044 | 0.5380 | 0.087* | 0.50 (3) |
C24 | 0.7123 (4) | 0.2366 (13) | 0.6217 (6) | 0.127 (4) | |
H24A | 0.7394 | 0.3196 | 0.6553 | 0.153* | |
H24B | 0.7434 | 0.1636 | 0.6128 | 0.153* | |
C25 | 0.6814 (4) | 0.1572 (11) | 0.6722 (5) | 0.103 (3) | |
H25A | 0.6971 | 0.2081 | 0.7255 | 0.124* | |
H25B | 0.6993 | 0.0525 | 0.6812 | 0.124* | |
C26 | 0.6071 (3) | 0.1450 (7) | 0.6440 (4) | 0.0592 (16) | |
H26A | 0.5932 | 0.1695 | 0.6896 | 0.071* | 0.50 (3) |
H26B | 0.5937 | 0.0391 | 0.6273 | 0.071* | 0.50 (3) |
H26C | 0.5911 | 0.2148 | 0.6764 | 0.071* | 0.50 (3) |
H26D | 0.5951 | 0.0402 | 0.6535 | 0.071* | 0.50 (3) |
C28 | 0.4559 (3) | 0.1853 (6) | 0.5596 (3) | 0.0461 (13) | |
H28 | 0.4685 | 0.1472 | 0.6129 | 0.055* | |
C29 | 0.3878 (3) | 0.2089 (6) | 0.5076 (3) | 0.0439 (13) | |
C30 | 0.3251 (3) | 0.1884 (7) | 0.5121 (4) | 0.0581 (15) | |
H30 | 0.3162 | 0.1509 | 0.5570 | 0.070* | |
C31 | 0.2781 (3) | 0.2348 (7) | 0.4368 (4) | 0.0603 (16) | |
H31 | 0.2315 | 0.2333 | 0.4212 | 0.072* | |
C32 | 0.3138 (3) | 0.2840 (7) | 0.3890 (4) | 0.0544 (15) | |
H32 | 0.2943 | 0.3225 | 0.3357 | 0.065* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Ni1 | 0.0458 (4) | 0.0390 (4) | 0.0391 (4) | 0.0018 (3) | 0.0154 (3) | −0.0003 (3) |
Ni2 | 0.0506 (4) | 0.0389 (4) | 0.0453 (4) | −0.0012 (3) | 0.0233 (3) | −0.0032 (3) |
N1 | 0.053 (3) | 0.047 (3) | 0.040 (2) | 0.003 (2) | 0.018 (2) | 0.002 (2) |
N2 | 0.047 (3) | 0.051 (3) | 0.040 (2) | 0.000 (2) | 0.011 (2) | −0.003 (2) |
N3 | 0.045 (3) | 0.051 (3) | 0.046 (3) | 0.006 (2) | 0.019 (2) | 0.006 (2) |
N4 | 0.046 (3) | 0.043 (3) | 0.047 (3) | 0.004 (2) | 0.016 (2) | 0.001 (2) |
N5 | 0.071 (3) | 0.041 (3) | 0.049 (3) | 0.000 (2) | 0.033 (3) | −0.006 (2) |
N6 | 0.060 (3) | 0.052 (3) | 0.054 (3) | −0.001 (2) | 0.035 (3) | −0.004 (2) |
N7 | 0.041 (2) | 0.043 (3) | 0.050 (3) | −0.002 (2) | 0.016 (2) | −0.001 (2) |
N8 | 0.046 (3) | 0.040 (3) | 0.047 (3) | −0.002 (2) | 0.019 (2) | −0.002 (2) |
C1 | 0.062 (4) | 0.054 (4) | 0.057 (4) | 0.003 (3) | 0.028 (3) | 0.002 (3) |
C2 | 0.095 (5) | 0.060 (4) | 0.059 (4) | −0.008 (4) | 0.045 (4) | 0.004 (3) |
C3 | 0.086 (5) | 0.055 (4) | 0.043 (3) | 0.004 (4) | 0.024 (3) | 0.005 (3) |
C4 | 0.063 (4) | 0.039 (3) | 0.043 (3) | 0.004 (3) | 0.020 (3) | −0.002 (3) |
C5 | 0.059 (4) | 0.048 (3) | 0.045 (3) | 0.010 (3) | 0.006 (3) | −0.003 (3) |
C6 | 0.049 (8) | 0.037 (8) | 0.052 (8) | 0.000 (6) | 0.016 (6) | −0.007 (6) |
C11 | 0.044 (7) | 0.046 (8) | 0.061 (9) | 0.010 (6) | 0.031 (6) | 0.000 (7) |
C6' | 0.056 (8) | 0.054 (9) | 0.047 (8) | −0.004 (7) | 0.027 (6) | −0.006 (7) |
C11' | 0.051 (8) | 0.050 (9) | 0.060 (9) | 0.006 (6) | 0.033 (7) | 0.007 (7) |
C22 | 0.061 (9) | 0.055 (10) | 0.064 (10) | −0.019 (8) | 0.035 (8) | −0.023 (8) |
C27 | 0.044 (7) | 0.047 (10) | 0.053 (9) | −0.002 (7) | 0.023 (6) | −0.021 (7) |
C22' | 0.040 (7) | 0.062 (12) | 0.045 (8) | −0.010 (7) | 0.013 (6) | −0.017 (8) |
C27' | 0.049 (7) | 0.036 (10) | 0.053 (9) | 0.006 (7) | 0.019 (6) | −0.011 (7) |
C7 | 0.044 (3) | 0.071 (4) | 0.074 (4) | 0.002 (3) | 0.017 (3) | −0.005 (3) |
C8 | 0.057 (5) | 0.217 (12) | 0.108 (7) | −0.036 (7) | 0.025 (5) | 0.017 (8) |
C9 | 0.072 (6) | 0.139 (9) | 0.142 (8) | −0.019 (5) | 0.055 (6) | 0.032 (7) |
C10 | 0.062 (4) | 0.054 (4) | 0.068 (4) | −0.006 (3) | 0.034 (3) | −0.008 (3) |
C12 | 0.063 (4) | 0.043 (3) | 0.050 (3) | 0.010 (3) | 0.026 (3) | 0.002 (3) |
C13 | 0.059 (4) | 0.043 (3) | 0.042 (3) | 0.009 (3) | 0.019 (3) | 0.003 (2) |
C14 | 0.063 (4) | 0.064 (4) | 0.044 (3) | 0.003 (3) | 0.008 (3) | 0.006 (3) |
C15 | 0.054 (4) | 0.060 (4) | 0.062 (4) | 0.005 (3) | 0.003 (3) | 0.002 (3) |
C16 | 0.048 (3) | 0.046 (3) | 0.059 (4) | 0.003 (3) | 0.018 (3) | −0.002 (3) |
C17 | 0.090 (5) | 0.048 (4) | 0.051 (4) | 0.006 (3) | 0.030 (4) | −0.003 (3) |
C18 | 0.114 (6) | 0.056 (4) | 0.051 (4) | 0.004 (4) | 0.036 (4) | 0.002 (3) |
C19 | 0.117 (6) | 0.044 (4) | 0.078 (5) | 0.001 (4) | 0.067 (5) | 0.001 (3) |
C20 | 0.088 (5) | 0.043 (3) | 0.056 (4) | 0.003 (3) | 0.044 (4) | −0.004 (3) |
C21 | 0.071 (4) | 0.051 (4) | 0.082 (5) | −0.013 (3) | 0.053 (4) | −0.014 (3) |
C23 | 0.049 (4) | 0.081 (5) | 0.091 (5) | −0.009 (4) | 0.030 (4) | −0.020 (4) |
C24 | 0.053 (5) | 0.170 (10) | 0.138 (9) | −0.011 (6) | 0.011 (5) | 0.045 (8) |
C25 | 0.061 (5) | 0.136 (8) | 0.092 (6) | 0.015 (5) | 0.004 (4) | 0.012 (6) |
C26 | 0.060 (4) | 0.052 (4) | 0.058 (4) | 0.005 (3) | 0.012 (3) | −0.010 (3) |
C28 | 0.049 (3) | 0.040 (3) | 0.049 (3) | −0.002 (3) | 0.017 (3) | 0.009 (3) |
C29 | 0.047 (3) | 0.041 (3) | 0.046 (3) | 0.000 (2) | 0.020 (3) | −0.002 (2) |
C30 | 0.056 (4) | 0.059 (4) | 0.068 (4) | −0.005 (3) | 0.033 (3) | −0.006 (3) |
C31 | 0.044 (3) | 0.062 (4) | 0.075 (4) | −0.001 (3) | 0.022 (3) | −0.003 (3) |
C32 | 0.046 (3) | 0.051 (4) | 0.057 (4) | 0.000 (3) | 0.010 (3) | −0.006 (3) |
Ni1—N2 | 1.850 (4) | C27'—H27B | 0.9800 |
Ni1—N3 | 1.855 (4) | C7—C8 | 1.452 (10) |
Ni1—N1 | 1.887 (4) | C7—H7A | 0.9700 |
Ni1—N4 | 1.889 (4) | C7—H7B | 0.9700 |
Ni2—N6 | 1.844 (5) | C7—H7C | 0.9700 |
Ni2—N7 | 1.851 (4) | C7—H7D | 0.9700 |
Ni2—N8 | 1.883 (4) | C8—C9 | 1.454 (8) |
Ni2—N5 | 1.888 (5) | C8—H8A | 0.9700 |
N1—C1 | 1.347 (7) | C8—H8B | 0.9700 |
N1—C4 | 1.387 (7) | C9—C10 | 1.481 (9) |
N2—C5 | 1.290 (7) | C9—H9A | 0.9700 |
N2—C6 | 1.466 (8) | C9—H9B | 0.9700 |
N2—C6' | 1.470 (8) | C10—H10A | 0.9700 |
N3—C12 | 1.297 (7) | C10—H10B | 0.9700 |
N3—C11 | 1.466 (8) | C10—H10C | 0.9700 |
N3—C11' | 1.477 (9) | C10—H10D | 0.9700 |
N4—C16 | 1.340 (7) | C12—C13 | 1.410 (8) |
N4—C13 | 1.390 (7) | C12—H12 | 0.9300 |
N5—C17 | 1.351 (7) | C13—C14 | 1.379 (8) |
N5—C20 | 1.378 (7) | C14—C15 | 1.388 (9) |
N6—C21 | 1.297 (7) | C14—H14 | 0.9300 |
N6—C22 | 1.480 (18) | C15—C16 | 1.396 (8) |
N6—C22' | 1.543 (16) | C15—H15 | 0.9300 |
N7—C28 | 1.274 (6) | C16—H16 | 0.9300 |
N7—C27 | 1.503 (15) | C17—C18 | 1.391 (9) |
N7—C27' | 1.504 (15) | C17—H17 | 0.9300 |
N8—C32 | 1.345 (7) | C18—C19 | 1.368 (10) |
N8—C29 | 1.394 (6) | C18—H18 | 0.9300 |
C1—C2 | 1.374 (8) | C19—C20 | 1.397 (9) |
C1—H1 | 0.9300 | C19—H19 | 0.9300 |
C2—C3 | 1.378 (9) | C20—C21 | 1.412 (9) |
C2—H2 | 0.9300 | C21—H21 | 0.9300 |
C3—C4 | 1.387 (8) | C23—C24 | 1.446 (10) |
C3—H3 | 0.9300 | C23—H23A | 0.9700 |
C4—C5 | 1.423 (8) | C23—H23B | 0.9700 |
C5—H5 | 0.9300 | C23—H23C | 0.9700 |
C6—C7 | 1.521 (9) | C23—H23D | 0.9700 |
C6—C11 | 1.523 (9) | C24—C25 | 1.454 (8) |
C6—H6A | 0.9800 | C24—H24A | 0.9700 |
C11—C10 | 1.520 (9) | C24—H24B | 0.9700 |
C11—H11A | 0.9800 | C25—C26 | 1.484 (9) |
C6'—C7 | 1.507 (9) | C25—H25A | 0.9700 |
C6'—C11' | 1.520 (9) | C25—H25B | 0.9700 |
C6'—H6B | 0.9800 | C26—H26A | 0.9700 |
C11'—C10 | 1.523 (8) | C26—H26B | 0.9700 |
C11'—H11B | 0.9800 | C26—H26C | 0.9700 |
C22—C27 | 1.53 (3) | C26—H26D | 0.9700 |
C22—C23 | 1.545 (17) | C28—C29 | 1.417 (7) |
C22—H22A | 0.9800 | C28—H28 | 0.9300 |
C27—C26 | 1.485 (18) | C29—C30 | 1.383 (7) |
C27—H27A | 0.9800 | C30—C31 | 1.388 (8) |
C22'—C23 | 1.477 (15) | C30—H30 | 0.9300 |
C22'—C27' | 1.49 (3) | C31—C32 | 1.389 (8) |
C22'—H22B | 0.9800 | C31—H31 | 0.9300 |
C27'—C26 | 1.511 (18) | C32—H32 | 0.9300 |
N2—Ni1—N3 | 84.00 (19) | C7—C8—C9 | 122.0 (7) |
N2—Ni1—N1 | 84.78 (19) | C7—C8—H8A | 106.8 |
N3—Ni1—N1 | 168.47 (19) | C9—C8—H8A | 106.8 |
N2—Ni1—N4 | 167.79 (19) | C7—C8—H8B | 106.8 |
N3—Ni1—N4 | 84.49 (19) | C9—C8—H8B | 106.8 |
N1—Ni1—N4 | 106.5 (2) | H8A—C8—H8B | 106.7 |
N6—Ni2—N7 | 84.9 (2) | C8—C9—C10 | 120.8 (6) |
N6—Ni2—N8 | 168.2 (2) | C8—C9—H9A | 107.1 |
N7—Ni2—N8 | 84.12 (19) | C10—C9—H9A | 107.1 |
N6—Ni2—N5 | 84.3 (2) | C8—C9—H9B | 107.1 |
N7—Ni2—N5 | 169.0 (2) | C10—C9—H9B | 107.1 |
N8—Ni2—N5 | 106.4 (2) | H9A—C9—H9B | 106.8 |
C1—N1—C4 | 106.2 (5) | C9—C10—C11 | 114.4 (6) |
C1—N1—Ni1 | 142.4 (4) | C9—C10—C11' | 113.2 (6) |
C4—N1—Ni1 | 111.2 (4) | C11—C10—C11' | 27.7 (5) |
C5—N2—C6 | 131.7 (6) | C9—C10—H10A | 108.7 |
C5—N2—C6' | 125.4 (6) | C11—C10—H10A | 108.7 |
C6—N2—C6' | 27.4 (5) | C11'—C10—H10A | 83.8 |
C5—N2—Ni1 | 114.9 (4) | C9—C10—H10B | 108.7 |
C6—N2—Ni1 | 112.9 (4) | C11—C10—H10B | 108.7 |
C6'—N2—Ni1 | 114.9 (4) | C11'—C10—H10B | 129.9 |
C12—N3—C11 | 124.8 (6) | H10A—C10—H10B | 107.6 |
C12—N3—C11' | 131.3 (6) | C9—C10—H10C | 108.9 |
C11—N3—C11' | 28.7 (5) | C11—C10—H10C | 128.6 |
C12—N3—Ni1 | 115.7 (4) | C11'—C10—H10C | 108.9 |
C11—N3—Ni1 | 114.8 (4) | H10A—C10—H10C | 28.4 |
C11'—N3—Ni1 | 112.3 (4) | H10B—C10—H10C | 81.1 |
C16—N4—C13 | 106.7 (5) | C9—C10—H10D | 108.9 |
C16—N4—Ni1 | 142.2 (4) | C11—C10—H10D | 83.3 |
C13—N4—Ni1 | 110.8 (4) | C11'—C10—H10D | 109.0 |
C17—N5—C20 | 106.2 (5) | H10A—C10—H10D | 130.6 |
C17—N5—Ni2 | 142.1 (5) | H10B—C10—H10D | 28.8 |
C20—N5—Ni2 | 111.3 (4) | H10C—C10—H10D | 107.7 |
C21—N6—C22 | 131.0 (8) | N3—C12—C13 | 114.4 (5) |
C21—N6—C22' | 126.6 (8) | N3—C12—H12 | 122.8 |
C22—N6—C22' | 28.7 (6) | C13—C12—H12 | 122.8 |
C21—N6—Ni2 | 115.7 (4) | C14—C13—N4 | 109.4 (5) |
C22—N6—Ni2 | 112.3 (6) | C14—C13—C12 | 136.3 (6) |
C22'—N6—Ni2 | 113.8 (6) | N4—C13—C12 | 114.3 (5) |
C28—N7—C27 | 125.3 (8) | C13—C14—C15 | 106.9 (5) |
C28—N7—C27' | 130.8 (8) | C13—C14—H14 | 126.5 |
C27—N7—C27' | 26.2 (5) | C15—C14—H14 | 126.5 |
C28—N7—Ni2 | 116.5 (4) | C14—C15—C16 | 106.7 (5) |
C27—N7—Ni2 | 114.5 (7) | C14—C15—H15 | 126.7 |
C27'—N7—Ni2 | 112.1 (7) | C16—C15—H15 | 126.7 |
C32—N8—C29 | 106.1 (5) | N4—C16—C15 | 110.3 (6) |
C32—N8—Ni2 | 142.5 (4) | N4—C16—H16 | 124.9 |
C29—N8—Ni2 | 111.2 (3) | C15—C16—H16 | 124.9 |
N1—C1—C2 | 110.6 (6) | N5—C17—C18 | 109.9 (6) |
N1—C1—H1 | 124.7 | N5—C17—H17 | 125.1 |
C2—C1—H1 | 124.7 | C18—C17—H17 | 125.1 |
C1—C2—C3 | 107.4 (6) | C19—C18—C17 | 107.9 (6) |
C1—C2—H2 | 126.3 | C19—C18—H18 | 126.0 |
C3—C2—H2 | 126.3 | C17—C18—H18 | 126.0 |
C2—C3—C4 | 106.6 (6) | C18—C19—C20 | 106.0 (6) |
C2—C3—H3 | 126.7 | C18—C19—H19 | 127.0 |
C4—C3—H3 | 126.7 | C20—C19—H19 | 127.0 |
N1—C4—C3 | 109.2 (5) | N5—C20—C19 | 109.9 (6) |
N1—C4—C5 | 112.9 (5) | N5—C20—C21 | 113.7 (5) |
C3—C4—C5 | 137.9 (6) | C19—C20—C21 | 136.4 (7) |
N2—C5—C4 | 115.5 (5) | N6—C21—C20 | 114.5 (6) |
N2—C5—H5 | 122.2 | N6—C21—H21 | 122.7 |
C4—C5—H5 | 122.2 | C20—C21—H21 | 122.7 |
N2—C6—C7 | 117.1 (7) | C24—C23—C22' | 111.7 (8) |
N2—C6—C11 | 104.3 (7) | C24—C23—C22 | 113.7 (9) |
C7—C6—C11 | 112.4 (8) | C22'—C23—C22 | 28.7 (6) |
N2—C6—H6A | 107.5 | C24—C23—H23A | 108.8 |
C7—C6—H6A | 107.5 | C22'—C23—H23A | 131.4 |
C11—C6—H6A | 107.5 | C22—C23—H23A | 108.8 |
N3—C11—C10 | 117.0 (7) | C24—C23—H23B | 108.8 |
N3—C11—C6 | 102.5 (7) | C22'—C23—H23B | 83.5 |
C10—C11—C6 | 110.3 (8) | C22—C23—H23B | 108.8 |
N3—C11—H11A | 108.9 | H23A—C23—H23B | 107.7 |
C10—C11—H11A | 108.9 | C24—C23—H23C | 109.3 |
C6—C11—H11A | 108.9 | C22'—C23—H23C | 109.1 |
N2—C6'—C7 | 117.8 (7) | C22—C23—H23C | 82.1 |
N2—C6'—C11' | 102.2 (7) | H23A—C23—H23C | 30.0 |
C7—C6'—C11' | 111.0 (8) | H23B—C23—H23C | 131.1 |
N2—C6'—H6B | 108.5 | C24—C23—H23D | 109.3 |
C7—C6'—H6B | 108.5 | C22'—C23—H23D | 109.4 |
C11'—C6'—H6B | 108.5 | C22—C23—H23D | 129.2 |
N3—C11'—C6' | 103.8 (7) | H23A—C23—H23D | 80.4 |
N3—C11'—C10 | 116.1 (7) | H23B—C23—H23D | 29.2 |
C6'—C11'—C10 | 112.5 (8) | H23C—C23—H23D | 107.9 |
N3—C11'—H11B | 108.0 | C23—C24—C25 | 123.4 (7) |
C6'—C11'—H11B | 108.0 | C23—C24—H24A | 106.5 |
C10—C11'—H11B | 108.0 | C25—C24—H24A | 106.5 |
N6—C22—C27 | 104.5 (15) | C23—C24—H24B | 106.5 |
N6—C22—C23 | 115.8 (12) | C25—C24—H24B | 106.5 |
C27—C22—C23 | 108.0 (17) | H24A—C24—H24B | 106.5 |
N6—C22—H22A | 109.4 | C24—C25—C26 | 120.2 (7) |
C27—C22—H22A | 109.4 | C24—C25—H25A | 107.3 |
C23—C22—H22A | 109.4 | C26—C25—H25A | 107.3 |
C26—C27—N7 | 116.6 (13) | C24—C25—H25B | 107.3 |
C26—C27—C22 | 114.5 (17) | C26—C25—H25B | 107.3 |
N7—C27—C22 | 101.9 (14) | H25A—C25—H25B | 106.9 |
C26—C27—H27A | 107.8 | C25—C26—C27 | 112.3 (8) |
N7—C27—H27A | 107.8 | C25—C26—C27' | 112.6 (8) |
C22—C27—H27A | 107.8 | C27—C26—C27' | 26.3 (5) |
C23—C22'—C27' | 114.1 (17) | C25—C26—H26A | 109.1 |
C23—C22'—N6 | 116.1 (12) | C27—C26—H26A | 109.1 |
C27'—C22'—N6 | 101.8 (15) | C27'—C26—H26A | 128.9 |
C23—C22'—H22B | 108.2 | C25—C26—H26B | 109.1 |
C27'—C22'—H22B | 108.2 | C27—C26—H26B | 109.1 |
N6—C22'—H22B | 108.2 | C27'—C26—H26B | 85.1 |
C22'—C27'—N7 | 104.7 (14) | H26A—C26—H26B | 107.9 |
C22'—C27'—C26 | 111.9 (17) | C25—C26—H26C | 109.1 |
N7—C27'—C26 | 115.0 (12) | C27—C26—H26C | 85.4 |
C22'—C27'—H27B | 108.3 | C27'—C26—H26C | 109.3 |
N7—C27'—H27B | 108.3 | H26A—C26—H26C | 26.6 |
C26—C27'—H27B | 108.3 | H26B—C26—H26C | 129.2 |
C8—C7—C6' | 114.9 (6) | C25—C26—H26D | 109.1 |
C8—C7—C6 | 113.9 (7) | C27—C26—H26D | 128.9 |
C6'—C7—C6 | 26.5 (5) | C27'—C26—H26D | 108.9 |
C8—C7—H7A | 108.8 | H26A—C26—H26D | 83.3 |
C6'—C7—H7A | 84.2 | H26B—C26—H26D | 26.7 |
C6—C7—H7A | 108.8 | H26C—C26—H26D | 107.8 |
C8—C7—H7B | 108.8 | N7—C28—C29 | 114.6 (5) |
C6'—C7—H7B | 127.8 | N7—C28—H28 | 122.7 |
C6—C7—H7B | 108.8 | C29—C28—H28 | 122.7 |
H7A—C7—H7B | 107.7 | C30—C29—N8 | 109.6 (5) |
C8—C7—H7C | 108.5 | C30—C29—C28 | 137.1 (5) |
C6'—C7—H7C | 108.5 | N8—C29—C28 | 113.3 (5) |
C6—C7—H7C | 128.9 | C29—C30—C31 | 106.6 (5) |
H7A—C7—H7C | 27.7 | C29—C30—H30 | 126.7 |
H7B—C7—H7C | 82.1 | C31—C30—H30 | 126.7 |
C8—C7—H7D | 108.5 | C30—C31—C32 | 107.0 (5) |
C6'—C7—H7D | 108.6 | C30—C31—H31 | 126.5 |
C6—C7—H7D | 84.9 | C32—C31—H31 | 126.5 |
H7A—C7—H7D | 129.8 | N8—C32—C31 | 110.6 (5) |
H7B—C7—H7D | 27.3 | N8—C32—H32 | 124.7 |
H7C—C7—H7D | 107.5 | C31—C32—H32 | 124.7 |
N2—Ni1—N1—C1 | −179.6 (7) | C28—N7—C27—C26 | 42 (2) |
N3—Ni1—N1—C1 | 167.3 (8) | C27'—N7—C27—C26 | −70 (3) |
N4—Ni1—N1—C1 | 5.2 (7) | Ni2—N7—C27—C26 | −161.0 (11) |
N2—Ni1—N1—C4 | 7.0 (4) | C28—N7—C27—C22 | 167.2 (13) |
N3—Ni1—N1—C4 | −6.1 (12) | C27'—N7—C27—C22 | 55 (2) |
N4—Ni1—N1—C4 | −168.2 (3) | Ni2—N7—C27—C22 | −36 (2) |
N3—Ni1—N2—C5 | 169.7 (4) | N6—C22—C27—C26 | 174.1 (9) |
N1—Ni1—N2—C5 | −7.7 (4) | C23—C22—C27—C26 | −62 (3) |
N4—Ni1—N2—C5 | 150.1 (8) | N6—C22—C27—N7 | 47 (2) |
N3—Ni1—N2—C6 | −17.1 (6) | C23—C22—C27—N7 | 171.2 (10) |
N1—Ni1—N2—C6 | 165.5 (6) | C21—N6—C22'—C23 | −41 (2) |
N4—Ni1—N2—C6 | −36.7 (12) | C22—N6—C22'—C23 | 69 (2) |
N3—Ni1—N2—C6' | 12.8 (7) | Ni2—N6—C22'—C23 | 162.1 (12) |
N1—Ni1—N2—C6' | −164.6 (7) | C21—N6—C22'—C27' | −165.9 (12) |
N4—Ni1—N2—C6' | −6.8 (13) | C22—N6—C22'—C27' | −56 (2) |
N2—Ni1—N3—C12 | −170.2 (4) | Ni2—N6—C22'—C27' | 38 (2) |
N1—Ni1—N3—C12 | −157.0 (9) | C23—C22'—C27'—N7 | −173.9 (9) |
N4—Ni1—N3—C12 | 5.7 (4) | N6—C22'—C27'—N7 | −48 (2) |
N2—Ni1—N3—C11 | −13.1 (6) | C23—C22'—C27'—C26 | 61 (3) |
N1—Ni1—N3—C11 | 0.1 (13) | N6—C22'—C27'—C26 | −173.3 (9) |
N4—Ni1—N3—C11 | 162.8 (6) | C28—N7—C27'—C22' | −145.7 (13) |
N2—Ni1—N3—C11' | 18.2 (6) | C27—N7—C27'—C22' | −57 (3) |
N1—Ni1—N3—C11' | 31.3 (13) | Ni2—N7—C27'—C22' | 44 (2) |
N4—Ni1—N3—C11' | −165.9 (6) | C28—N7—C27'—C26 | −22 (2) |
N2—Ni1—N4—C16 | −157.8 (8) | C27—N7—C27'—C26 | 66 (3) |
N3—Ni1—N4—C16 | −177.4 (6) | Ni2—N7—C27'—C26 | 166.7 (11) |
N1—Ni1—N4—C16 | −1.0 (7) | N2—C6'—C7—C8 | 160.8 (9) |
N2—Ni1—N4—C13 | 14.6 (11) | C11'—C6'—C7—C8 | 43.5 (12) |
N3—Ni1—N4—C13 | −5.0 (4) | N2—C6'—C7—C6 | 66.9 (12) |
N1—Ni1—N4—C13 | 171.5 (4) | C11'—C6'—C7—C6 | −50.4 (12) |
N6—Ni2—N5—C17 | −177.9 (7) | N2—C6—C7—C8 | −164.8 (9) |
N7—Ni2—N5—C17 | −166.6 (9) | C11—C6—C7—C8 | −44.0 (12) |
N8—Ni2—N5—C17 | −3.0 (7) | N2—C6—C7—C6' | −66.4 (12) |
N6—Ni2—N5—C20 | −6.2 (4) | C11—C6—C7—C6' | 54.3 (12) |
N7—Ni2—N5—C20 | 5.1 (12) | C6'—C7—C8—C9 | −15.5 (15) |
N8—Ni2—N5—C20 | 168.7 (4) | C6—C7—C8—C9 | 13.7 (15) |
N7—Ni2—N6—C21 | −171.0 (4) | C7—C8—C9—C10 | 0.9 (17) |
N8—Ni2—N6—C21 | −148.9 (9) | C8—C9—C10—C11 | 15.0 (14) |
N5—Ni2—N6—C21 | 6.8 (4) | C8—C9—C10—C11' | −15.3 (14) |
N7—Ni2—N6—C22 | 19.3 (11) | N3—C11—C10—C9 | −160.8 (8) |
N8—Ni2—N6—C22 | 41.4 (16) | C6—C11—C10—C9 | −44.3 (11) |
N5—Ni2—N6—C22 | −162.9 (11) | N3—C11—C10—C11' | −66.9 (11) |
N7—Ni2—N6—C22' | −11.9 (11) | C6—C11—C10—C11' | 49.7 (11) |
N8—Ni2—N6—C22' | 10.2 (16) | N3—C11'—C10—C9 | 163.4 (8) |
N5—Ni2—N6—C22' | 165.9 (11) | C6'—C11'—C10—C9 | 44.0 (12) |
N6—Ni2—N7—C28 | 170.0 (4) | N3—C11'—C10—C11 | 64.8 (12) |
N8—Ni2—N7—C28 | −5.5 (4) | C6'—C11'—C10—C11 | −54.5 (12) |
N5—Ni2—N7—C28 | 158.7 (9) | C11—N3—C12—C13 | −159.5 (7) |
N6—Ni2—N7—C27 | 10.8 (11) | C11'—N3—C12—C13 | 164.7 (8) |
N8—Ni2—N7—C27 | −164.8 (11) | Ni1—N3—C12—C13 | −5.0 (6) |
N5—Ni2—N7—C27 | −0.5 (16) | C16—N4—C13—C14 | 0.1 (6) |
N6—Ni2—N7—C27' | −17.7 (10) | Ni1—N4—C13—C14 | −175.1 (4) |
N8—Ni2—N7—C27' | 166.7 (10) | C16—N4—C13—C12 | 178.9 (5) |
N5—Ni2—N7—C27' | −29.0 (15) | Ni1—N4—C13—C12 | 3.7 (6) |
N6—Ni2—N8—C32 | 156.7 (9) | N3—C12—C13—C14 | 179.0 (6) |
N7—Ni2—N8—C32 | 178.9 (6) | N3—C12—C13—N4 | 0.7 (7) |
N5—Ni2—N8—C32 | 2.0 (7) | N4—C13—C14—C15 | 0.3 (7) |
N6—Ni2—N8—C29 | −17.4 (12) | C12—C13—C14—C15 | −178.1 (6) |
N7—Ni2—N8—C29 | 4.8 (4) | C13—C14—C15—C16 | −0.5 (7) |
N5—Ni2—N8—C29 | −172.1 (3) | C13—N4—C16—C15 | −0.4 (6) |
C4—N1—C1—C2 | 0.7 (7) | Ni1—N4—C16—C15 | 172.2 (5) |
Ni1—N1—C1—C2 | −172.9 (5) | C14—C15—C16—N4 | 0.6 (7) |
N1—C1—C2—C3 | 0.1 (7) | C20—N5—C17—C18 | −0.4 (6) |
C1—C2—C3—C4 | −0.9 (7) | Ni2—N5—C17—C18 | 171.5 (5) |
C1—N1—C4—C3 | −1.3 (6) | N5—C17—C18—C19 | −0.9 (7) |
Ni1—N1—C4—C3 | 174.5 (4) | C17—C18—C19—C20 | 1.9 (7) |
C1—N1—C4—C5 | 178.8 (5) | C17—N5—C20—C19 | 1.6 (6) |
Ni1—N1—C4—C5 | −5.4 (6) | Ni2—N5—C20—C19 | −173.1 (4) |
C2—C3—C4—N1 | 1.4 (7) | C17—N5—C20—C21 | 179.6 (5) |
C2—C3—C4—C5 | −178.7 (7) | Ni2—N5—C20—C21 | 4.9 (6) |
C6—N2—C5—C4 | −165.1 (8) | C18—C19—C20—N5 | −2.2 (7) |
C6'—N2—C5—C4 | 160.6 (7) | C18—C19—C20—C21 | −179.5 (7) |
Ni1—N2—C5—C4 | 6.5 (6) | C22—N6—C21—C20 | 161.6 (14) |
N1—C4—C5—N2 | −0.5 (7) | C22'—N6—C21—C20 | −161.8 (13) |
C3—C4—C5—N2 | 179.6 (7) | Ni2—N6—C21—C20 | −5.7 (7) |
C5—N2—C6—C7 | −22.2 (14) | N5—C20—C21—N6 | 0.4 (7) |
C6'—N2—C6—C7 | 65.9 (12) | C19—C20—C21—N6 | 177.6 (7) |
Ni1—N2—C6—C7 | 166.1 (6) | C27'—C22'—C23—C24 | −46 (3) |
C5—N2—C6—C11 | −147.1 (8) | N6—C22'—C23—C24 | −163.4 (13) |
C6'—N2—C6—C11 | −59.0 (12) | C27'—C22'—C23—C22 | 55 (3) |
Ni1—N2—C6—C11 | 41.2 (9) | N6—C22'—C23—C22 | −63 (2) |
C12—N3—C11—C10 | −47.1 (12) | N6—C22—C23—C24 | 160.6 (13) |
C11'—N3—C11—C10 | 66.8 (12) | C27—C22—C23—C24 | 44 (2) |
Ni1—N3—C11—C10 | 158.2 (6) | N6—C22—C23—C22' | 68 (2) |
C12—N3—C11—C6 | −167.9 (7) | C27—C22—C23—C22' | −48 (2) |
C11'—N3—C11—C6 | −54.0 (11) | C22'—C23—C24—C25 | 16.1 (18) |
Ni1—N3—C11—C6 | 37.4 (9) | C22—C23—C24—C25 | −15.0 (17) |
N2—C6—C11—N3 | −47.1 (10) | C23—C24—C25—C26 | −1.5 (16) |
C7—C6—C11—N3 | −175.0 (7) | C24—C25—C26—C27 | −13.7 (15) |
N2—C6—C11—C10 | −172.5 (7) | C24—C25—C26—C27' | 14.8 (15) |
C7—C6—C11—C10 | 59.7 (12) | N7—C27—C26—C25 | 165.2 (11) |
C5—N2—C6'—C7 | 45.8 (13) | C22—C27—C26—C25 | 46 (2) |
C6—N2—C6'—C7 | −67.9 (13) | N7—C27—C26—C27' | 69 (2) |
Ni1—N2—C6'—C7 | −160.1 (7) | C22—C27—C26—C27' | −50 (2) |
C5—N2—C6'—C11' | 167.7 (7) | C22'—C27'—C26—C25 | −43 (2) |
C6—N2—C6'—C11' | 54.0 (12) | N7—C27'—C26—C25 | −162.2 (11) |
Ni1—N2—C6'—C11' | −38.1 (10) | C22'—C27'—C26—C27 | 52 (3) |
C12—N3—C11'—C6' | 147.2 (8) | N7—C27'—C26—C27 | −67 (2) |
C11—N3—C11'—C6' | 58.5 (12) | C27—N7—C28—C29 | 161.5 (12) |
Ni1—N3—C11'—C6' | −42.8 (10) | C27'—N7—C28—C29 | −165.7 (13) |
C12—N3—C11'—C10 | 23.2 (14) | Ni2—N7—C28—C29 | 4.8 (6) |
C11—N3—C11'—C10 | −65.5 (12) | C32—N8—C29—C30 | 0.3 (6) |
Ni1—N3—C11'—C10 | −166.8 (7) | Ni2—N8—C29—C30 | 176.5 (4) |
N2—C6'—C11'—N3 | 48.5 (10) | C32—N8—C29—C28 | −179.9 (5) |
C7—C6'—C11'—N3 | 174.9 (7) | Ni2—N8—C29—C28 | −3.6 (6) |
N2—C6'—C11'—C10 | 174.8 (7) | N7—C28—C29—C30 | 179.2 (6) |
C7—C6'—C11'—C10 | −58.8 (12) | N7—C28—C29—N8 | −0.6 (7) |
C21—N6—C22—C27 | 148.9 (11) | N8—C29—C30—C31 | 0.3 (7) |
C22'—N6—C22—C27 | 56 (2) | C28—C29—C30—C31 | −179.5 (6) |
Ni2—N6—C22—C27 | −43 (2) | C29—C30—C31—C32 | −0.7 (7) |
C21—N6—C22—C23 | 30 (2) | C29—N8—C32—C31 | −0.7 (6) |
C22'—N6—C22—C23 | −63 (2) | Ni2—N8—C32—C31 | −175.0 (5) |
Ni2—N6—C22—C23 | −162.1 (11) | C30—C31—C32—N8 | 0.9 (7) |
Experimental details
Crystal data | |
Chemical formula | [Ni(C16H18N4)] |
Mr | 325.05 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 294 |
a, b, c (Å) | 21.379 (3), 8.6247 (10), 17.475 (2) |
β (°) | 111.697 (2) |
V (Å3) | 2993.9 (6) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 1.29 |
Crystal size (mm) | 0.26 × 0.22 × 0.18 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.730, 0.800 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 16412, 6100, 4081 |
Rint | 0.040 |
(sin θ/λ)max (Å−1) | 0.626 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.061, 0.136, 1.15 |
No. of reflections | 6100 |
No. of parameters | 418 |
No. of restraints | 12 |
H-atom treatment | H-atom parameters constrained |
w = 1/[σ2(Fo2) + 10.3102P] where P = (Fo2 + 2Fc2)/3 | |
Δρmax, Δρmin (e Å−3) | 0.39, −0.41 |
Computer programs: SMART (Bruker, 1998), SAINT (Bruker, 1998), SAINT, SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), SHELXTL (Bruker, 1998), SHELXL97.
Ni1—N2 | 1.850 (4) | Ni2—N6 | 1.844 (5) |
Ni1—N3 | 1.855 (4) | Ni2—N7 | 1.851 (4) |
Ni1—N1 | 1.887 (4) | Ni2—N8 | 1.883 (4) |
Ni1—N4 | 1.889 (4) | Ni2—N5 | 1.888 (5) |
N2—Ni1—N3 | 84.00 (19) | N6—Ni2—N7 | 84.9 (2) |
N2—Ni1—N1 | 84.78 (19) | N7—Ni2—N8 | 84.12 (19) |
N3—Ni1—N4 | 84.49 (19) | N6—Ni2—N5 | 84.3 (2) |
salen ligands (salen = N,N'-bis(salicyldene)ethylenediamine) and their complexes have received continuous and intensive attention because of their capabilities to serve as catalysts of organic reactions (Baleizao & Garcia, 2006), models of catalytic centers of metalloenzymes (Maruyama et al., 1990; Carey et al., 2004) and nonlinear optical materials (Rigamonti et al., 2006; Tedim et al., 2006). On the contrary, little is known about the ligand behaviour of the analogous compounds derived from pyrrole 2-carboxaldehyde and about the properties of their complexes (Weber, 1967; Downing & Urbach, 1971; Bacchi et al., 2003, Bella et al., 2004). In the present work, we have prepared the title compound (I) and determined its crystal structure.
The complex crystallizes with two crystallographically independent, but quite similar molecules in the asymmetric unit. In both molecules, the ligand is bideprotonated and the Ni(II) ion is tetracoordinated in a square planar environment, with the pyrrole and imine nitrogen atoms as donors. The coordination induces the formation of three five-membered chelate rings, and the N—Ni—N angles are less than 90°. The Ni—N (pyrrole) distances are significantly longer than the Ni—N (imine) distances.