Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536807030887/hg2244sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S1600536807030887/hg2244Isup2.hkl |
CCDC reference: 657576
The title compound was prepared using (µ-dppm)2AuCl2 (Cooper et al., 1984) and literature methods (Malatesa et al., 1966). Colourless crystals that were suitable for X-Ray diffraction were obtained at 251 K in deuterated methanol.
Hydrogen atoms were positioned geometrically and constrained to ride on their parent atoms with distances for aromatic C—H = 0.95 Å, methyl C—D = 0.98 Å and methanol O—D = 0.84 Å. Uiso values were set at 1.2 times Ueq(C,O) for all H/D atoms except for methyl D at 1.5 Ueq(C). A residual electron density peak of 1.64 e Å-3 was located 1.188 Å next to O2.
Binuclear gold complexes with bridging bidentate ligands and various counter-ions have been the subject of several studies due to their rich luminescence and bonding properties (King et al., 1989) and have been structurally characterized (Jaw et al., 1989; Khan et al., 1989; Porter et al., 1989; Liou et al., 1994; Wang & Liu, 1994; Bauer & Schmidbaur, 1997). The bridging methylene carbon can be exploited as a coordination and reactive centre. Neutral homo- or heterometallic tetranuclear derivatives have been reported (Uson et al., 1986). It is assumed that Au···Au distances are determined by electronic effects of the substituents L and X at gold but it has become more obvious that steric effects play a decisive role. The weak forces associated with Au···Au contacts can be overruled by steric repulsion and other factors like packing forces (Angermaier & Schmidbaur, 1995). Here we report another crystal and molecular structure containing this dication. Each nitrate counter anion engages in a hydrogen bond to one perdeuteromethanol lattice solvent.
The asymmetric unit of (A) consists of one half of the dication, [(µ-dppm)2Au2]2+, containing one nitrate anion and one deuterated methanol molecule. The rest of the molecule is related by a centre of symmetry between the gold atoms of each dimer. The Au···Au separation is 3.0245 (3) Å. This agrees with a weak Au···Au interaction (Schmidbaur et al., 2005). In this instance the steric constraints of the dppm ligand assist the aurophillic interaction in the Au2P4C2 ring which has a chair conformation (Perreault et al., 1992; Bauer & Schmidbaur, 1997). The Au centres adopt a normal linear two-coordinate geometry of 177.76 (3) Å, slightly distorted from ideality by the aurophilic bonding. Channels of anions are observed running parallel to the a axis. Two oxygen atoms of the nitrate are aligned towards the gold atom in the cation with distances of 3.470 (2) Å for O2–Au1i [symmetry code: (i) = -x + 1, -y + 1,-z] and 3.357 (2) Å for O1—Au1.
For related literature, see: Angermaier & Schmidbaur (1995); Bauer & Schmidbaur (1997); Cooper et al. (1984); Jaw et al. (1989); Khan et al. (1989); King et al. (1989); Liou et al. (1994); Malatesa et al. (1966); Perreault et al. (1992); Porter et al. (1989); Schmidbaur et al. (2005); Uson et al. (1986); Wang & Liu (1994).
Data collection: SMART (Bruker, 2002); cell refinement: SAINT (Bruker, 2003); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: X-SEED (Barbour, 2001); software used to prepare material for publication: X-SEED.
Fig. 1. The molecular structure of (A), showing atom labels and 50% probability displacement ellipsoids for non-H atoms. |
[Au2(C25H22P2)2](NO3)2·2CD4O | F(000) = 1320 |
Mr = 1358.71 | Dx = 1.834 Mg m−3 |
Monoclinic, P21/n | Melting point: 414.8 K |
Hall symbol: -P 2yn | Mo Kα radiation, λ = 0.71073 Å |
a = 11.6214 (8) Å | Cell parameters from 6683 reflections |
b = 13.6313 (9) Å | θ = 2.4–26.4° |
c = 16.4319 (12) Å | µ = 6.14 mm−1 |
β = 109.048 (1)° | T = 100 K |
V = 2460.5 (3) Å3 | Prism, colourless |
Z = 2 | 0.27 × 0.19 × 0.13 mm |
Bruker APEX CCD area-detector diffractometer | 5019 independent reflections |
Radiation source: fine-focus sealed tube | 4626 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.025 |
ω scans | θmax = 26.4°, θmin = 1.9° |
Absorption correction: multi-scan (SADABS; Bruker, 2002) | h = −14→14 |
Tmin = 0.256, Tmax = 0.450 | k = −17→12 |
14182 measured reflections | l = −20→18 |
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)] = 0.022 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.052 | H-atom parameters constrained |
S = 1.06 | w = 1/[σ2(Fo2) + (0.0256P)2 + 0.7357P] where P = (Fo2 + 2Fc2)/3 |
5019 reflections | (Δ/σ)max = 0.001 |
309 parameters | Δρmax = 1.64 e Å−3 |
0 restraints | Δρmin = −0.47 e Å−3 |
[Au2(C25H22P2)2](NO3)2·2CD4O | V = 2460.5 (3) Å3 |
Mr = 1358.71 | Z = 2 |
Monoclinic, P21/n | Mo Kα radiation |
a = 11.6214 (8) Å | µ = 6.14 mm−1 |
b = 13.6313 (9) Å | T = 100 K |
c = 16.4319 (12) Å | 0.27 × 0.19 × 0.13 mm |
β = 109.048 (1)° |
Bruker APEX CCD area-detector diffractometer | 5019 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2002) | 4626 reflections with I > 2σ(I) |
Tmin = 0.256, Tmax = 0.450 | Rint = 0.025 |
14182 measured reflections |
R[F2 > 2σ(F2)] = 0.022 | 0 restraints |
wR(F2) = 0.052 | H-atom parameters constrained |
S = 1.06 | Δρmax = 1.64 e Å−3 |
5019 reflections | Δρmin = −0.47 e Å−3 |
309 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 | ||
Au1 | 0.408600 (9) | 0.485644 (8) | 0.046685 (7) | 0.01107 (5) | |
P1 | 0.26529 (6) | 0.57042 (6) | −0.06166 (5) | 0.01064 (16) | |
P2 | 0.45307 (7) | 0.60437 (6) | −0.15453 (5) | 0.01081 (16) | |
O1 | 0.6025 (2) | 0.78397 (16) | 0.18981 (15) | 0.0216 (5) | |
O2 | 0.6738 (2) | 0.66210 (17) | 0.13524 (14) | 0.0230 (5) | |
O3 | 0.5548 (2) | 0.63412 (17) | 0.21084 (15) | 0.0248 (5) | |
O4 | 0.3636 (2) | 0.7250 (2) | 0.26312 (16) | 0.0338 (6) | |
D4 | 0.4274 | 0.6978 | 0.2610 | 0.051* | |
N1 | 0.6106 (2) | 0.6935 (2) | 0.17854 (17) | 0.0182 (6) | |
C1 | 0.2969 (3) | 0.5708 (2) | −0.16312 (19) | 0.0122 (6) | |
H1A | 0.2404 | 0.6173 | −0.2029 | 0.015* | |
H1B | 0.2796 | 0.5046 | −0.1891 | 0.015* | |
C4 | 0.3516 (4) | 0.7089 (3) | 0.3450 (3) | 0.0389 (10) | |
D4A | 0.4209 | 0.7384 | 0.3894 | 0.058* | |
D4B | 0.3496 | 0.6383 | 0.3554 | 0.058* | |
D4C | 0.2759 | 0.7390 | 0.3468 | 0.058* | |
C11 | 0.1141 (3) | 0.5171 (2) | −0.0928 (2) | 0.0132 (6) | |
C12 | 0.0970 (3) | 0.4237 (3) | −0.0638 (2) | 0.0220 (7) | |
H12 | 0.1636 | 0.3896 | −0.0247 | 0.026* | |
C13 | −0.0175 (3) | 0.3809 (2) | −0.0922 (2) | 0.0264 (8) | |
H13 | −0.0291 | 0.3173 | −0.0727 | 0.032* | |
C14 | −0.1141 (3) | 0.4298 (3) | −0.1485 (2) | 0.0224 (7) | |
H14 | −0.1922 | 0.3999 | −0.1678 | 0.027* | |
C15 | −0.0980 (3) | 0.5223 (3) | −0.1770 (2) | 0.0226 (8) | |
H15 | −0.1654 | 0.5562 | −0.2155 | 0.027* | |
C16 | 0.0151 (3) | 0.5660 (2) | −0.1499 (2) | 0.0187 (7) | |
H16 | 0.0257 | 0.6296 | −0.1701 | 0.022* | |
C21 | 0.2552 (2) | 0.6982 (2) | −0.03458 (19) | 0.0115 (6) | |
C22 | 0.3051 (3) | 0.7273 (2) | 0.0513 (2) | 0.0150 (6) | |
H22 | 0.3408 | 0.6798 | 0.0945 | 0.018* | |
C23 | 0.3027 (3) | 0.8244 (2) | 0.0735 (2) | 0.0171 (7) | |
H23 | 0.3366 | 0.8438 | 0.1320 | 0.021* | |
C24 | 0.2508 (3) | 0.8942 (2) | 0.0104 (2) | 0.0170 (7) | |
H24 | 0.2498 | 0.9613 | 0.0259 | 0.020* | |
C25 | 0.2008 (3) | 0.8660 (2) | −0.0748 (2) | 0.0154 (6) | |
H25 | 0.1648 | 0.9137 | −0.1177 | 0.019* | |
C26 | 0.2031 (3) | 0.7684 (2) | −0.0975 (2) | 0.0154 (6) | |
H26 | 0.1692 | 0.7493 | −0.1561 | 0.018* | |
C31 | 0.4599 (3) | 0.5910 (2) | −0.2622 (2) | 0.0132 (6) | |
C32 | 0.3662 (3) | 0.6220 (2) | −0.3352 (2) | 0.0150 (6) | |
H32 | 0.2903 | 0.6422 | −0.3306 | 0.018* | |
C33 | 0.3844 (3) | 0.6232 (2) | −0.4144 (2) | 0.0160 (7) | |
H33 | 0.3211 | 0.6454 | −0.4638 | 0.019* | |
C34 | 0.4930 (3) | 0.5925 (2) | −0.4223 (2) | 0.0199 (7) | |
H34 | 0.5052 | 0.5946 | −0.4767 | 0.024* | |
C35 | 0.5846 (3) | 0.5587 (3) | −0.3505 (2) | 0.0214 (7) | |
H35 | 0.6590 | 0.5363 | −0.3562 | 0.026* | |
C36 | 0.5691 (3) | 0.5571 (2) | −0.2710 (2) | 0.0187 (7) | |
H36 | 0.6322 | 0.5331 | −0.2223 | 0.022* | |
C41 | 0.4729 (3) | 0.7353 (2) | −0.1336 (2) | 0.0128 (6) | |
C42 | 0.5348 (3) | 0.7659 (2) | −0.0495 (2) | 0.0163 (7) | |
H42 | 0.5652 | 0.7187 | −0.0052 | 0.020* | |
C43 | 0.5520 (3) | 0.8650 (3) | −0.0308 (2) | 0.0216 (7) | |
H43 | 0.5931 | 0.8856 | 0.0266 | 0.026* | |
C44 | 0.5096 (3) | 0.9340 (2) | −0.0954 (2) | 0.0208 (7) | |
H44 | 0.5222 | 1.0019 | −0.0827 | 0.025* | |
C45 | 0.4485 (3) | 0.9034 (2) | −0.1791 (2) | 0.0207 (7) | |
H45 | 0.4191 | 0.9508 | −0.2234 | 0.025* | |
C46 | 0.4301 (3) | 0.8047 (2) | −0.1984 (2) | 0.0176 (7) | |
H46 | 0.3884 | 0.7844 | −0.2558 | 0.021* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Au1 | 0.00955 (7) | 0.01244 (7) | 0.01065 (7) | 0.00124 (4) | 0.00248 (5) | 0.00256 (4) |
P1 | 0.0095 (3) | 0.0108 (4) | 0.0113 (4) | 0.0002 (3) | 0.0029 (3) | 0.0006 (3) |
P2 | 0.0099 (4) | 0.0119 (4) | 0.0102 (4) | 0.0001 (3) | 0.0027 (3) | 0.0013 (3) |
O1 | 0.0273 (13) | 0.0147 (12) | 0.0199 (13) | −0.0031 (10) | 0.0036 (10) | −0.0014 (9) |
O2 | 0.0262 (12) | 0.0255 (13) | 0.0175 (13) | 0.0054 (10) | 0.0075 (10) | 0.0000 (10) |
O3 | 0.0308 (13) | 0.0208 (13) | 0.0224 (14) | −0.0106 (10) | 0.0083 (11) | 0.0022 (10) |
O4 | 0.0357 (15) | 0.0440 (17) | 0.0221 (14) | −0.0021 (13) | 0.0098 (12) | 0.0010 (12) |
N1 | 0.0187 (14) | 0.0206 (15) | 0.0105 (14) | −0.0001 (12) | −0.0018 (11) | −0.0004 (11) |
C1 | 0.0114 (14) | 0.0128 (15) | 0.0114 (15) | 0.0015 (12) | 0.0025 (12) | 0.0015 (12) |
C4 | 0.055 (3) | 0.037 (2) | 0.032 (2) | −0.012 (2) | 0.022 (2) | −0.0014 (18) |
C11 | 0.0118 (15) | 0.0148 (16) | 0.0138 (16) | −0.0007 (12) | 0.0052 (13) | −0.0006 (12) |
C12 | 0.0181 (16) | 0.0187 (18) | 0.029 (2) | 0.0009 (13) | 0.0073 (15) | 0.0064 (14) |
C13 | 0.0214 (17) | 0.0187 (18) | 0.040 (2) | −0.0025 (14) | 0.0110 (16) | 0.0043 (15) |
C14 | 0.0141 (16) | 0.0269 (19) | 0.026 (2) | −0.0064 (14) | 0.0065 (14) | −0.0047 (15) |
C15 | 0.0140 (16) | 0.033 (2) | 0.0194 (19) | 0.0003 (14) | 0.0033 (14) | 0.0046 (14) |
C16 | 0.0156 (15) | 0.0171 (17) | 0.0229 (18) | −0.0003 (13) | 0.0056 (14) | 0.0034 (13) |
C21 | 0.0098 (14) | 0.0117 (15) | 0.0143 (16) | 0.0001 (11) | 0.0057 (12) | −0.0002 (12) |
C22 | 0.0134 (15) | 0.0178 (17) | 0.0131 (16) | 0.0005 (12) | 0.0035 (13) | 0.0026 (12) |
C23 | 0.0187 (16) | 0.0208 (17) | 0.0121 (16) | 0.0006 (13) | 0.0054 (13) | −0.0043 (13) |
C24 | 0.0171 (16) | 0.0135 (16) | 0.0227 (18) | −0.0001 (12) | 0.0098 (14) | −0.0024 (13) |
C25 | 0.0170 (15) | 0.0129 (16) | 0.0178 (17) | 0.0049 (12) | 0.0076 (13) | 0.0049 (12) |
C26 | 0.0157 (15) | 0.0173 (16) | 0.0124 (16) | 0.0005 (13) | 0.0036 (13) | 0.0007 (12) |
C31 | 0.0138 (14) | 0.0118 (15) | 0.0155 (16) | −0.0019 (12) | 0.0068 (13) | −0.0010 (12) |
C32 | 0.0123 (15) | 0.0135 (16) | 0.0173 (17) | −0.0010 (12) | 0.0023 (13) | −0.0023 (12) |
C33 | 0.0201 (16) | 0.0145 (16) | 0.0111 (16) | −0.0012 (13) | 0.0022 (13) | 0.0001 (12) |
C34 | 0.0246 (17) | 0.0228 (18) | 0.0144 (17) | −0.0033 (14) | 0.0091 (14) | −0.0004 (13) |
C35 | 0.0161 (16) | 0.029 (2) | 0.0218 (18) | 0.0018 (14) | 0.0101 (14) | 0.0017 (15) |
C36 | 0.0155 (15) | 0.0219 (18) | 0.0195 (18) | 0.0026 (13) | 0.0069 (13) | 0.0032 (14) |
C41 | 0.0111 (14) | 0.0130 (15) | 0.0153 (16) | −0.0007 (12) | 0.0058 (13) | −0.0008 (12) |
C42 | 0.0143 (15) | 0.0191 (17) | 0.0140 (17) | 0.0040 (13) | 0.0028 (13) | 0.0023 (13) |
C43 | 0.0162 (16) | 0.0253 (19) | 0.0199 (18) | −0.0008 (14) | 0.0013 (14) | −0.0087 (14) |
C44 | 0.0197 (16) | 0.0141 (17) | 0.029 (2) | 0.0004 (13) | 0.0080 (15) | −0.0046 (14) |
C45 | 0.0248 (17) | 0.0139 (17) | 0.0243 (19) | 0.0015 (14) | 0.0092 (15) | 0.0055 (13) |
C46 | 0.0184 (16) | 0.0195 (17) | 0.0134 (17) | −0.0012 (13) | 0.0033 (13) | 0.0007 (13) |
Au1—P1 | 2.3116 (8) | C21—C26 | 1.393 (4) |
Au1—P2i | 2.3175 (8) | C21—C22 | 1.397 (4) |
Au1—Au1i | 3.0245 (3) | C22—C23 | 1.375 (4) |
Au1—O3 | 3.357 (2) | C22—H22 | 0.9500 |
P1—C21 | 1.811 (3) | C23—C24 | 1.391 (4) |
P1—C11 | 1.814 (3) | C23—H23 | 0.9500 |
P1—C1 | 1.821 (3) | C24—C25 | 1.384 (4) |
P2—C31 | 1.805 (3) | C24—H24 | 0.9500 |
P2—C41 | 1.818 (3) | C25—C26 | 1.384 (4) |
P2—C1 | 1.832 (3) | C25—H25 | 0.9500 |
P2—Au1i | 2.3175 (8) | C26—H26 | 0.9500 |
O1—N1 | 1.256 (3) | C31—C32 | 1.397 (4) |
O2—N1 | 1.253 (3) | C31—C36 | 1.402 (4) |
O2—Au1i | 3.470 (2) | C32—C33 | 1.385 (4) |
O3—N1 | 1.257 (3) | C32—H32 | 0.9500 |
O4—C4 | 1.414 (4) | C33—C34 | 1.376 (4) |
O4—D4 | 0.8400 | C33—H33 | 0.9500 |
C1—H1A | 0.9900 | C34—C35 | 1.384 (5) |
C1—H1B | 0.9900 | C34—H34 | 0.9500 |
C4—D4A | 0.9800 | C35—C36 | 1.376 (4) |
C4—D4B | 0.9800 | C35—H35 | 0.9500 |
C4—D4C | 0.9800 | C36—H36 | 0.9500 |
C11—C16 | 1.394 (4) | C41—C46 | 1.389 (4) |
C11—C12 | 1.396 (4) | C41—C42 | 1.397 (4) |
C12—C13 | 1.387 (4) | C42—C43 | 1.385 (4) |
C12—H12 | 0.9500 | C42—H42 | 0.9500 |
C13—C14 | 1.372 (5) | C43—C44 | 1.384 (5) |
C13—H13 | 0.9500 | C43—H43 | 0.9500 |
C14—C15 | 1.378 (5) | C44—C45 | 1.389 (5) |
C14—H14 | 0.9500 | C44—H44 | 0.9500 |
C15—C16 | 1.379 (4) | C45—C46 | 1.383 (4) |
C15—H15 | 0.9500 | C45—H45 | 0.9500 |
C16—H16 | 0.9500 | C46—H46 | 0.9500 |
P1—Au1—P2i | 177.76 (3) | C26—C21—C22 | 119.4 (3) |
P1—Au1—Au1i | 89.62 (2) | C26—C21—P1 | 121.7 (2) |
P2i—Au1—Au1i | 91.70 (2) | C22—C21—P1 | 118.8 (2) |
P1—Au1—O3 | 111.47 (4) | C23—C22—C21 | 120.2 (3) |
P2i—Au1—O3 | 70.24 (4) | C23—C22—H22 | 119.9 |
Au1i—Au1—O3 | 94.27 (4) | C21—C22—H22 | 119.9 |
C21—P1—C11 | 108.68 (13) | C22—C23—C24 | 120.1 (3) |
C21—P1—C1 | 105.71 (14) | C22—C23—H23 | 119.9 |
C11—P1—C1 | 102.07 (14) | C24—C23—H23 | 119.9 |
C21—P1—Au1 | 112.32 (10) | C25—C24—C23 | 120.1 (3) |
C11—P1—Au1 | 113.89 (10) | C25—C24—H24 | 120.0 |
C1—P1—Au1 | 113.37 (10) | C23—C24—H24 | 120.0 |
C31—P2—C41 | 103.94 (14) | C24—C25—C26 | 120.1 (3) |
C31—P2—C1 | 104.97 (14) | C24—C25—H25 | 120.0 |
C41—P2—C1 | 108.72 (13) | C26—C25—H25 | 120.0 |
C31—P2—Au1i | 117.03 (10) | C25—C26—C21 | 120.1 (3) |
C41—P2—Au1i | 111.21 (10) | C25—C26—H26 | 120.0 |
C1—P2—Au1i | 110.44 (10) | C21—C26—H26 | 120.0 |
N1—O2—Au1i | 129.75 (18) | C32—C31—C36 | 119.3 (3) |
N1—O3—Au1 | 104.14 (18) | C32—C31—P2 | 122.7 (2) |
C4—O4—D4 | 109.5 | C36—C31—P2 | 117.7 (2) |
O2—N1—O1 | 120.3 (3) | C33—C32—C31 | 119.7 (3) |
O2—N1—O3 | 119.9 (3) | C33—C32—H32 | 120.2 |
O1—N1—O3 | 119.7 (3) | C31—C32—H32 | 120.2 |
P1—C1—P2 | 114.91 (16) | C34—C33—C32 | 120.8 (3) |
P1—C1—H1A | 108.5 | C34—C33—H33 | 119.6 |
P2—C1—H1A | 108.5 | C32—C33—H33 | 119.6 |
P1—C1—H1B | 108.5 | C33—C34—C35 | 119.6 (3) |
P2—C1—H1B | 108.5 | C33—C34—H34 | 120.2 |
H1A—C1—H1B | 107.5 | C35—C34—H34 | 120.2 |
O4—C4—D4A | 109.5 | C36—C35—C34 | 120.8 (3) |
O4—C4—D4B | 109.5 | C36—C35—H35 | 119.6 |
D4A—C4—D4B | 109.5 | C34—C35—H35 | 119.6 |
O4—C4—D4C | 109.5 | C35—C36—C31 | 119.8 (3) |
D4A—C4—D4C | 109.5 | C35—C36—H36 | 120.1 |
D4B—C4—D4C | 109.5 | C31—C36—H36 | 120.1 |
C16—C11—C12 | 119.2 (3) | C46—C41—C42 | 119.7 (3) |
C16—C11—P1 | 120.6 (2) | C46—C41—P2 | 122.1 (2) |
C12—C11—P1 | 120.1 (2) | C42—C41—P2 | 118.2 (2) |
C13—C12—C11 | 119.8 (3) | C43—C42—C41 | 120.1 (3) |
C13—C12—H12 | 120.1 | C43—C42—H42 | 119.9 |
C11—C12—H12 | 120.1 | C41—C42—H42 | 119.9 |
C14—C13—C12 | 120.4 (3) | C44—C43—C42 | 120.2 (3) |
C14—C13—H13 | 119.8 | C44—C43—H43 | 119.9 |
C12—C13—H13 | 119.8 | C42—C43—H43 | 119.9 |
C13—C14—C15 | 120.1 (3) | C43—C44—C45 | 119.6 (3) |
C13—C14—H14 | 119.9 | C43—C44—H44 | 120.2 |
C15—C14—H14 | 119.9 | C45—C44—H44 | 120.2 |
C14—C15—C16 | 120.4 (3) | C46—C45—C44 | 120.7 (3) |
C14—C15—H15 | 119.8 | C46—C45—H45 | 119.7 |
C16—C15—H15 | 119.8 | C44—C45—H45 | 119.7 |
C15—C16—C11 | 120.1 (3) | C45—C46—C41 | 119.8 (3) |
C15—C16—H16 | 120.0 | C45—C46—H46 | 120.1 |
C11—C16—H16 | 120.0 | C41—C46—H46 | 120.1 |
P2i—Au1—P1—C21 | 136.7 (7) | C11—P1—C21—C22 | 110.4 (2) |
Au1i—Au1—P1—C21 | −97.16 (10) | C1—P1—C21—C22 | −140.7 (2) |
O3—Au1—P1—C21 | −2.72 (11) | Au1—P1—C21—C22 | −16.6 (3) |
P2i—Au1—P1—C11 | 12.6 (7) | C26—C21—C22—C23 | 0.1 (4) |
Au1i—Au1—P1—C11 | 138.74 (11) | P1—C21—C22—C23 | 177.7 (2) |
O3—Au1—P1—C11 | −126.82 (12) | C21—C22—C23—C24 | −0.2 (5) |
P2i—Au1—P1—C1 | −103.6 (7) | C22—C23—C24—C25 | 0.4 (5) |
Au1i—Au1—P1—C1 | 22.60 (11) | C23—C24—C25—C26 | −0.5 (5) |
O3—Au1—P1—C1 | 117.04 (11) | C24—C25—C26—C21 | 0.4 (5) |
P1—Au1—O3—N1 | −64.04 (18) | C22—C21—C26—C25 | −0.2 (4) |
P2i—Au1—O3—N1 | 117.50 (18) | P1—C21—C26—C25 | −177.7 (2) |
Au1i—Au1—O3—N1 | 27.23 (18) | C41—P2—C31—C32 | −72.2 (3) |
Au1i—O2—N1—O1 | −123.0 (2) | C1—P2—C31—C32 | 41.9 (3) |
Au1i—O2—N1—O3 | 56.9 (3) | Au1i—P2—C31—C32 | 164.8 (2) |
Au1—O3—N1—O2 | −49.4 (3) | C41—P2—C31—C36 | 101.2 (3) |
Au1—O3—N1—O1 | 130.5 (2) | C1—P2—C31—C36 | −144.6 (2) |
C21—P1—C1—P2 | 74.66 (18) | Au1i—P2—C31—C36 | −21.8 (3) |
C11—P1—C1—P2 | −171.74 (16) | C36—C31—C32—C33 | −3.0 (4) |
Au1—P1—C1—P2 | −48.81 (18) | P2—C31—C32—C33 | 170.4 (2) |
C31—P2—C1—P1 | 176.49 (16) | C31—C32—C33—C34 | 1.1 (5) |
C41—P2—C1—P1 | −72.8 (2) | C32—C33—C34—C35 | 1.0 (5) |
Au1i—P2—C1—P1 | 49.50 (18) | C33—C34—C35—C36 | −1.3 (5) |
C21—P1—C11—C16 | 46.3 (3) | C34—C35—C36—C31 | −0.6 (5) |
C1—P1—C11—C16 | −65.1 (3) | C32—C31—C36—C35 | 2.7 (5) |
Au1—P1—C11—C16 | 172.3 (2) | P2—C31—C36—C35 | −171.0 (3) |
C21—P1—C11—C12 | −137.5 (3) | C31—P2—C41—C46 | 32.8 (3) |
C1—P1—C11—C12 | 111.1 (3) | C1—P2—C41—C46 | −78.7 (3) |
Au1—P1—C11—C12 | −11.5 (3) | Au1i—P2—C41—C46 | 159.5 (2) |
C16—C11—C12—C13 | 0.3 (5) | C31—P2—C41—C42 | −146.4 (2) |
P1—C11—C12—C13 | −175.9 (3) | C1—P2—C41—C42 | 102.2 (3) |
C11—C12—C13—C14 | −0.2 (5) | Au1i—P2—C41—C42 | −19.6 (3) |
C12—C13—C14—C15 | −0.2 (6) | C46—C41—C42—C43 | 0.8 (5) |
C13—C14—C15—C16 | 0.6 (6) | P2—C41—C42—C43 | 180.0 (2) |
C14—C15—C16—C11 | −0.5 (5) | C41—C42—C43—C44 | −1.0 (5) |
C12—C11—C16—C15 | 0.1 (5) | C42—C43—C44—C45 | 0.7 (5) |
P1—C11—C16—C15 | 176.3 (3) | C43—C44—C45—C46 | −0.3 (5) |
C11—P1—C21—C26 | −72.1 (3) | C44—C45—C46—C41 | 0.1 (5) |
C1—P1—C21—C26 | 36.9 (3) | C42—C41—C46—C45 | −0.4 (5) |
Au1—P1—C21—C26 | 161.0 (2) | P2—C41—C46—C45 | −179.5 (2) |
Symmetry code: (i) −x+1, −y+1, −z. |
Experimental details
Crystal data | |
Chemical formula | [Au2(C25H22P2)2](NO3)2·2CD4O |
Mr | 1358.71 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 100 |
a, b, c (Å) | 11.6214 (8), 13.6313 (9), 16.4319 (12) |
β (°) | 109.048 (1) |
V (Å3) | 2460.5 (3) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 6.14 |
Crystal size (mm) | 0.27 × 0.19 × 0.13 |
Data collection | |
Diffractometer | Bruker APEX CCD area-detector |
Absorption correction | Multi-scan (SADABS; Bruker, 2002) |
Tmin, Tmax | 0.256, 0.450 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 14182, 5019, 4626 |
Rint | 0.025 |
(sin θ/λ)max (Å−1) | 0.625 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.022, 0.052, 1.06 |
No. of reflections | 5019 |
No. of parameters | 309 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 1.64, −0.47 |
Computer programs: SMART (Bruker, 2002), SAINT (Bruker, 2003), SAINT, SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), X-SEED (Barbour, 2001), X-SEED.
Au1—P1 | 2.3116 (8) | P1—C1 | 1.821 (3) |
Au1—P2i | 2.3175 (8) | P2—C31 | 1.805 (3) |
Au1—Au1i | 3.0245 (3) | P2—C41 | 1.818 (3) |
P1—C21 | 1.811 (3) | P2—C1 | 1.832 (3) |
P1—C11 | 1.814 (3) | ||
P1—Au1—P2i | 177.76 (3) | P2i—Au1—Au1i | 91.70 (2) |
P1—Au1—Au1i | 89.62 (2) |
Symmetry code: (i) −x+1, −y+1, −z. |
Binuclear gold complexes with bridging bidentate ligands and various counter-ions have been the subject of several studies due to their rich luminescence and bonding properties (King et al., 1989) and have been structurally characterized (Jaw et al., 1989; Khan et al., 1989; Porter et al., 1989; Liou et al., 1994; Wang & Liu, 1994; Bauer & Schmidbaur, 1997). The bridging methylene carbon can be exploited as a coordination and reactive centre. Neutral homo- or heterometallic tetranuclear derivatives have been reported (Uson et al., 1986). It is assumed that Au···Au distances are determined by electronic effects of the substituents L and X at gold but it has become more obvious that steric effects play a decisive role. The weak forces associated with Au···Au contacts can be overruled by steric repulsion and other factors like packing forces (Angermaier & Schmidbaur, 1995). Here we report another crystal and molecular structure containing this dication. Each nitrate counter anion engages in a hydrogen bond to one perdeuteromethanol lattice solvent.
The asymmetric unit of (A) consists of one half of the dication, [(µ-dppm)2Au2]2+, containing one nitrate anion and one deuterated methanol molecule. The rest of the molecule is related by a centre of symmetry between the gold atoms of each dimer. The Au···Au separation is 3.0245 (3) Å. This agrees with a weak Au···Au interaction (Schmidbaur et al., 2005). In this instance the steric constraints of the dppm ligand assist the aurophillic interaction in the Au2P4C2 ring which has a chair conformation (Perreault et al., 1992; Bauer & Schmidbaur, 1997). The Au centres adopt a normal linear two-coordinate geometry of 177.76 (3) Å, slightly distorted from ideality by the aurophilic bonding. Channels of anions are observed running parallel to the a axis. Two oxygen atoms of the nitrate are aligned towards the gold atom in the cation with distances of 3.470 (2) Å for O2–Au1i [symmetry code: (i) = -x + 1, -y + 1,-z] and 3.357 (2) Å for O1—Au1.