metal-organic compounds
{3,3′-Bis[(anthracen-9-yl)methyl]-1,1′-[(ethane-1,2-diyldioxy)bis(ethane-1,2-diyl)]bis(imidazol-2-ylidene)}mercury(II) bis(hexafluoridophosphate) acetonitrile disolvate
aCollege of Chemical and Materials Science, Shanxi Normal University, Linfen 041004, People's Republic of China, bCollege of Chemical Engineering, Hebei United University, Tangshan 063009, People's Republic of China, and cQian'an College, Hebei United University, Tangshan 063009, People's Republic of China
*Correspondence e-mail: wjwchlwx@126.com
In the title compound, [Hg(C42H38N4O2)](PF6)2·2CH3CN, the HgII cation lies on a twofold axis which is also the internal of the complete cationic complex. The HgII cation is coordinated by two symmetry-related C(carbene) atoms [Hg—C = 2.058 (9) Å] in a nearly linear geometry, with a C—Hg—C angle of 175.8 (5)°. There are weak intermolecular C—H⋯F interactions in the crystal packing between an F atom of a hexafluoridophosphate anion and a –CH2– group of the bis-N-heterocyclic carbene ligand.
Related literature
For related bis-N-heterocyclic carbene structures, see: Arduengo et al. (1991); Nielsen et al. (2006); Guo & Dong (2009).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2007); cell SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supporting information
10.1107/S1600536812005958/vn2031sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536812005958/vn2031Isup2.hkl
[3,3'-Bis(9-anthracenylmethyl)-1,1'-(2,2'- oxydiethylene)bis-imidazolium] hexafluorophosphate salt (522 mg, 0.566 mmol) was mixed with anhydrous Hg(OAc)2 (181 mg, 0.566 mmol) in acetonitrile (100 ml) (under argon) and heated under reflux for 2 d and then cooled to room temperature. The acetonitrile was removed in vacuo to yield a white solid which was washed with methanol to give the crude product. Colourless single crystals of the title compound were obtained by recrystallization from acetonitile and ethyl ether (yield: 75.3%).
The acetonitrile solvant molecule shows slight positional disorder. Instead of treating the disorder with split sites, the geometry of the molecule was rather regularized with the following three distance restraints: N3—C23: 2.60 (1) Å, N3—C22: 1.10 (1) Å and C22—C23: 1.50 (1) Å. The aromatic [C—H = 0.93 Å and Uiso(H) = 1.2Ueq(C)] and methylene H atoms [C—H = 0.96 Å and Uiso(H) = 1.5Ueq(C)] were included in the
using a riding-model approximation.Data collection: APEX2 (Bruker 2007); cell
SAINT (Bruker 2007); data reduction: SAINT (Bruker 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. The molecular structure of the title compound showing atomic displacement ellipsoids at the 30% probability level [symmetry code A: -x, y, 0.5 - z]. H atoms are omitted for clarity. |
[Hg(C42H38N4O2)](PF6)2·2C2H3N | F(000) = 2384 |
Mr = 1203.4 | Dx = 1.705 Mg m−3 |
Orthorhombic, Pbcn | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2n 2ab | Cell parameters from 990 reflections |
a = 19.774 (5) Å | θ = 2.7–24.2° |
b = 9.774 (3) Å | µ = 3.45 mm−1 |
c = 24.250 (6) Å | T = 298 K |
V = 4687 (2) Å3 | Block, colourless |
Z = 4 | 0.24 × 0.08 × 0.06 mm |
Bruker APEXII CCD area-detector diffractometer | 4804 independent reflections |
Radiation source: fine-focus sealed tube | 3011 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.086 |
ϕ and ω scans | θmax = 26.4°, θmin = 2.3° |
Absorption correction: multi-scan SADABS (Sheldrick, 1996) | h = −24→21 |
Tmin = 0.775, Tmax = 0.864 | k = −8→12 |
25351 measured reflections | l = −30→29 |
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)] = 0.065 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.169 | H-atom parameters constrained |
S = 1.10 | w = 1/[σ2(Fo2) + (0.0885P)2] where P = (Fo2 + 2Fc2)/3 |
4804 reflections | (Δ/σ)max = 0.001 |
313 parameters | Δρmax = 1.46 e Å−3 |
3 restraints | Δρmin = −1.80 e Å−3 |
[Hg(C42H38N4O2)](PF6)2·2C2H3N | V = 4687 (2) Å3 |
Mr = 1203.4 | Z = 4 |
Orthorhombic, Pbcn | Mo Kα radiation |
a = 19.774 (5) Å | µ = 3.45 mm−1 |
b = 9.774 (3) Å | T = 298 K |
c = 24.250 (6) Å | 0.24 × 0.08 × 0.06 mm |
Bruker APEXII CCD area-detector diffractometer | 4804 independent reflections |
Absorption correction: multi-scan SADABS (Sheldrick, 1996) | 3011 reflections with I > 2σ(I) |
Tmin = 0.775, Tmax = 0.864 | Rint = 0.086 |
25351 measured reflections |
R[F2 > 2σ(F2)] = 0.065 | 3 restraints |
wR(F2) = 0.169 | H-atom parameters constrained |
S = 1.10 | Δρmax = 1.46 e Å−3 |
4804 reflections | Δρmin = −1.80 e Å−3 |
313 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 | ||
Hg1 | 0.0000 | 0.46027 (4) | 0.2500 | 0.03456 (17) | |
N1 | 0.1519 (4) | 0.5080 (8) | 0.2447 (3) | 0.0373 (17) | |
N2 | 0.1200 (3) | 0.3926 (8) | 0.1754 (3) | 0.0378 (17) | |
O1 | 0.0679 (4) | 0.7289 (7) | 0.2621 (3) | 0.054 (2) | |
C1 | 0.0977 (4) | 0.4525 (8) | 0.2209 (3) | 0.0316 (18) | |
C2 | 0.2094 (5) | 0.4854 (12) | 0.2147 (5) | 0.057 (3) | |
H2 | 0.2531 | 0.5141 | 0.2229 | 0.068* | |
C3 | 0.1889 (5) | 0.4122 (11) | 0.1705 (4) | 0.052 (3) | |
H3 | 0.2162 | 0.3808 | 0.1419 | 0.062* | |
C4 | 0.1511 (5) | 0.5826 (10) | 0.2972 (4) | 0.044 (2) | |
H4A | 0.1957 | 0.5791 | 0.3136 | 0.053* | |
H4B | 0.1198 | 0.5379 | 0.3222 | 0.053* | |
C5 | 0.1304 (5) | 0.7289 (10) | 0.2901 (4) | 0.049 (3) | |
H5A | 0.1258 | 0.7729 | 0.3257 | 0.058* | |
H5B | 0.1641 | 0.7780 | 0.2688 | 0.058* | |
C6 | 0.0285 (6) | 0.8505 (10) | 0.2693 (4) | 0.048 (2) | |
H6A | 0.0565 | 0.9303 | 0.2628 | 0.057* | |
H6B | 0.0117 | 0.8548 | 0.3068 | 0.057* | |
C7 | 0.0762 (5) | 0.3126 (10) | 0.1375 (4) | 0.046 (2) | |
H7A | 0.0425 | 0.3731 | 0.1218 | 0.055* | |
H7B | 0.0527 | 0.2429 | 0.1586 | 0.055* | |
C8 | 0.1157 (5) | 0.2431 (11) | 0.0902 (4) | 0.046 (2) | |
C9 | 0.1315 (5) | 0.3178 (11) | 0.0428 (4) | 0.048 (3) | |
C10 | 0.1182 (6) | 0.4599 (12) | 0.0370 (5) | 0.060 (3) | |
H10 | 0.0982 | 0.5063 | 0.0663 | 0.073* | |
C11 | 0.1334 (8) | 0.5304 (11) | −0.0093 (5) | 0.067 (4) | |
H11 | 0.1218 | 0.6223 | −0.0124 | 0.081* | |
C12 | 0.1673 (6) | 0.4629 (14) | −0.0533 (5) | 0.070 (4) | |
H12 | 0.1793 | 0.5117 | −0.0847 | 0.084* | |
C13 | 0.1823 (5) | 0.3289 (13) | −0.0497 (4) | 0.058 (3) | |
H13 | 0.2038 | 0.2861 | −0.0791 | 0.069* | |
C14 | 0.1654 (5) | 0.2502 (11) | −0.0012 (4) | 0.050 (3) | |
C15 | 0.1800 (5) | 0.1125 (12) | 0.0019 (4) | 0.050 (3) | |
H15 | 0.2000 | 0.0694 | −0.0282 | 0.061* | |
C16 | 0.1655 (5) | 0.0367 (11) | 0.0488 (4) | 0.048 (3) | |
C17 | 0.1790 (5) | −0.1056 (12) | 0.0516 (5) | 0.055 (3) | |
H17 | 0.1975 | −0.1491 | 0.0210 | 0.066* | |
C18 | 0.1657 (5) | −0.1800 (12) | 0.0975 (5) | 0.061 (3) | |
H18 | 0.1764 | −0.2725 | 0.0985 | 0.073* | |
C19 | 0.1358 (6) | −0.1179 (11) | 0.1431 (5) | 0.064 (3) | |
H19 | 0.1259 | −0.1703 | 0.1741 | 0.076* | |
C20 | 0.1209 (6) | 0.0192 (11) | 0.1432 (5) | 0.054 (3) | |
H20 | 0.1028 | 0.0592 | 0.1747 | 0.065* | |
C21 | 0.1330 (5) | 0.1013 (10) | 0.0953 (4) | 0.041 (2) | |
N3 | 0.5038 (11) | 0.1282 (19) | 0.1170 (10) | 0.146 (8) | |
C22 | 0.5063 (9) | 0.217 (2) | 0.0890 (8) | 0.117 (9) | |
C23 | 0.5048 (8) | 0.334 (2) | 0.0493 (9) | 0.145 (9) | |
H23A | 0.4653 | 0.3277 | 0.0265 | 0.217* | |
H23B | 0.5445 | 0.3318 | 0.0266 | 0.217* | |
H23C | 0.5037 | 0.4190 | 0.0694 | 0.217* | |
P1 | 0.13116 (17) | 0.1670 (3) | 0.34660 (15) | 0.0625 (8) | |
F1 | 0.1456 (7) | 0.1821 (11) | 0.4086 (4) | 0.165 (5) | |
F2 | 0.1925 (4) | 0.2599 (8) | 0.3349 (5) | 0.136 (4) | |
F3 | 0.1723 (6) | 0.0382 (8) | 0.3418 (7) | 0.194 (7) | |
F4 | 0.0695 (5) | 0.0783 (9) | 0.3592 (4) | 0.128 (4) | |
F5 | 0.0880 (4) | 0.3006 (8) | 0.3479 (5) | 0.125 (3) | |
F6 | 0.1159 (9) | 0.1570 (13) | 0.2854 (4) | 0.219 (8) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Hg1 | 0.0341 (3) | 0.0382 (3) | 0.0314 (2) | 0.000 | 0.0074 (3) | 0.000 |
N1 | 0.040 (4) | 0.047 (4) | 0.025 (4) | −0.003 (3) | 0.002 (4) | −0.010 (4) |
N2 | 0.024 (4) | 0.049 (4) | 0.041 (4) | 0.001 (4) | 0.006 (3) | −0.007 (4) |
O1 | 0.067 (5) | 0.037 (3) | 0.057 (5) | −0.002 (3) | −0.013 (3) | −0.017 (3) |
C1 | 0.039 (5) | 0.034 (4) | 0.022 (4) | −0.002 (4) | 0.006 (4) | 0.002 (4) |
C2 | 0.029 (5) | 0.081 (8) | 0.061 (7) | −0.009 (5) | 0.007 (5) | −0.032 (6) |
C3 | 0.032 (5) | 0.076 (7) | 0.047 (6) | 0.001 (5) | 0.013 (5) | −0.011 (6) |
C4 | 0.040 (6) | 0.047 (5) | 0.045 (6) | −0.002 (5) | −0.004 (5) | −0.004 (5) |
C5 | 0.054 (6) | 0.047 (6) | 0.045 (6) | −0.009 (5) | −0.013 (5) | −0.015 (5) |
C6 | 0.064 (6) | 0.036 (5) | 0.043 (5) | 0.001 (5) | −0.007 (5) | −0.002 (4) |
C7 | 0.040 (5) | 0.052 (6) | 0.046 (6) | −0.007 (5) | 0.013 (5) | −0.013 (5) |
C8 | 0.041 (5) | 0.060 (6) | 0.036 (5) | −0.010 (5) | 0.005 (4) | −0.018 (5) |
C9 | 0.037 (5) | 0.060 (6) | 0.048 (6) | −0.009 (5) | 0.006 (5) | −0.024 (5) |
C10 | 0.067 (8) | 0.065 (7) | 0.050 (7) | −0.010 (6) | 0.008 (6) | −0.016 (6) |
C11 | 0.087 (10) | 0.062 (8) | 0.053 (8) | −0.006 (7) | −0.002 (6) | 0.005 (6) |
C12 | 0.060 (8) | 0.096 (11) | 0.055 (7) | −0.007 (8) | −0.008 (6) | 0.001 (7) |
C13 | 0.061 (7) | 0.077 (8) | 0.035 (5) | −0.006 (7) | 0.002 (5) | −0.008 (6) |
C14 | 0.046 (6) | 0.061 (6) | 0.042 (6) | −0.013 (6) | 0.008 (5) | −0.012 (5) |
C15 | 0.047 (6) | 0.064 (6) | 0.040 (6) | 0.000 (6) | 0.011 (5) | −0.014 (5) |
C16 | 0.034 (5) | 0.061 (7) | 0.047 (6) | −0.005 (5) | −0.003 (4) | −0.020 (5) |
C17 | 0.040 (6) | 0.061 (7) | 0.065 (7) | 0.000 (5) | −0.004 (5) | −0.025 (6) |
C18 | 0.053 (7) | 0.057 (7) | 0.073 (8) | 0.001 (6) | −0.016 (6) | −0.004 (6) |
C19 | 0.079 (8) | 0.047 (6) | 0.066 (7) | −0.011 (6) | −0.009 (7) | 0.000 (6) |
C20 | 0.055 (7) | 0.064 (7) | 0.045 (6) | −0.020 (6) | −0.001 (5) | −0.008 (5) |
C21 | 0.034 (5) | 0.050 (5) | 0.040 (5) | −0.011 (5) | 0.001 (4) | −0.012 (5) |
N3 | 0.114 (13) | 0.110 (13) | 0.21 (2) | 0.013 (13) | −0.025 (13) | −0.071 (16) |
C22 | 0.044 (9) | 0.124 (17) | 0.18 (3) | 0.015 (15) | −0.002 (14) | −0.085 (18) |
C23 | 0.097 (14) | 0.16 (2) | 0.18 (2) | 0.033 (15) | 0.064 (13) | −0.022 (18) |
P1 | 0.068 (2) | 0.0389 (14) | 0.080 (2) | −0.0070 (15) | −0.0066 (18) | −0.0066 (15) |
F1 | 0.258 (14) | 0.134 (8) | 0.103 (7) | −0.033 (9) | −0.075 (8) | −0.014 (7) |
F2 | 0.091 (6) | 0.088 (6) | 0.228 (12) | −0.023 (5) | 0.030 (7) | 0.004 (7) |
F3 | 0.179 (11) | 0.056 (5) | 0.35 (2) | 0.026 (6) | 0.102 (12) | −0.006 (8) |
F4 | 0.108 (7) | 0.121 (7) | 0.155 (9) | −0.050 (6) | 0.032 (6) | −0.023 (7) |
F5 | 0.078 (5) | 0.089 (6) | 0.208 (11) | 0.011 (5) | 0.000 (6) | 0.024 (7) |
F6 | 0.42 (2) | 0.158 (11) | 0.084 (7) | −0.145 (14) | −0.030 (10) | −0.001 (7) |
Hg1—C1 | 2.058 (9) | C11—C12 | 1.423 (17) |
Hg1—C1i | 2.058 (9) | C11—H11 | 0.9300 |
N1—C1 | 1.334 (11) | C12—C13 | 1.345 (15) |
N1—C2 | 1.367 (12) | C12—H12 | 0.9300 |
N1—C4 | 1.466 (11) | C13—C14 | 1.446 (14) |
N2—C1 | 1.324 (10) | C13—H13 | 0.9300 |
N2—C3 | 1.380 (11) | C14—C15 | 1.378 (14) |
N2—C7 | 1.485 (11) | C15—C16 | 1.388 (14) |
O1—C5 | 1.410 (11) | C15—H15 | 0.9300 |
O1—C6 | 1.432 (12) | C16—C17 | 1.417 (15) |
C2—C3 | 1.351 (14) | C16—C21 | 1.444 (13) |
C2—H2 | 0.9300 | C17—C18 | 1.355 (15) |
C3—H3 | 0.9300 | C17—H17 | 0.9300 |
C4—C5 | 1.497 (13) | C18—C19 | 1.393 (15) |
C4—H4A | 0.9700 | C18—H18 | 0.9300 |
C4—H4B | 0.9700 | C19—C20 | 1.371 (15) |
C5—H5A | 0.9700 | C19—H19 | 0.9300 |
C5—H5B | 0.9700 | C20—C21 | 1.431 (14) |
C6—C6i | 1.46 (2) | C20—H20 | 0.9300 |
C6—H6A | 0.9700 | N3—C22 | 1.104 (8) |
C6—H6B | 0.9700 | C22—C23 | 1.497 (8) |
C7—C8 | 1.546 (12) | C23—H23A | 0.9600 |
C7—H7A | 0.9700 | C23—H23B | 0.9600 |
C7—H7B | 0.9700 | C23—H23C | 0.9600 |
C8—C9 | 1.397 (14) | P1—F6 | 1.518 (11) |
C8—C21 | 1.433 (14) | P1—F3 | 1.503 (9) |
C9—C10 | 1.421 (14) | P1—F4 | 1.527 (8) |
C9—C14 | 1.422 (13) | P1—F1 | 1.539 (10) |
C10—C11 | 1.352 (16) | P1—F2 | 1.540 (8) |
C10—H10 | 0.9300 | P1—F5 | 1.561 (8) |
C1—Hg1—C1i | 175.8 (5) | C13—C12—C11 | 120.5 (12) |
C1—N1—C2 | 111.9 (7) | C13—C12—H12 | 119.8 |
C1—N1—C4 | 124.6 (7) | C11—C12—H12 | 119.8 |
C2—N1—C4 | 123.5 (8) | C12—C13—C14 | 121.4 (11) |
C1—N2—C3 | 109.9 (8) | C12—C13—H13 | 119.3 |
C1—N2—C7 | 123.6 (7) | C14—C13—H13 | 119.3 |
C3—N2—C7 | 126.5 (7) | C15—C14—C9 | 120.8 (10) |
C5—O1—C6 | 114.7 (7) | C15—C14—C13 | 121.0 (10) |
N2—C1—N1 | 105.8 (8) | C9—C14—C13 | 118.1 (10) |
N2—C1—Hg1 | 128.0 (7) | C14—C15—C16 | 121.5 (9) |
N1—C1—Hg1 | 126.3 (6) | C14—C15—H15 | 119.3 |
C3—C2—N1 | 105.0 (9) | C16—C15—H15 | 119.3 |
C3—C2—H2 | 127.5 | C15—C16—C17 | 121.6 (10) |
N1—C2—H2 | 127.5 | C15—C16—C21 | 119.9 (10) |
C2—C3—N2 | 107.5 (8) | C17—C16—C21 | 118.4 (10) |
C2—C3—H3 | 126.3 | C18—C17—C16 | 121.9 (10) |
N2—C3—H3 | 126.3 | C18—C17—H17 | 119.0 |
N1—C4—C5 | 112.2 (8) | C16—C17—H17 | 119.0 |
N1—C4—H4A | 109.2 | C17—C18—C19 | 120.1 (11) |
C5—C4—H4A | 109.2 | C17—C18—H18 | 120.0 |
N1—C4—H4B | 109.2 | C19—C18—H18 | 120.0 |
C5—C4—H4B | 109.2 | C20—C19—C18 | 121.1 (11) |
H4A—C4—H4B | 107.9 | C20—C19—H19 | 119.4 |
O1—C5—C4 | 107.1 (8) | C18—C19—H19 | 119.4 |
O1—C5—H5A | 110.3 | C19—C20—C21 | 120.8 (10) |
C4—C5—H5A | 110.3 | C19—C20—H20 | 119.6 |
O1—C5—H5B | 110.3 | C21—C20—H20 | 119.6 |
C4—C5—H5B | 110.3 | C20—C21—C8 | 125.0 (9) |
H5A—C5—H5B | 108.5 | C20—C21—C16 | 117.5 (10) |
O1—C6—C6i | 110.0 (7) | C8—C21—C16 | 117.5 (9) |
O1—C6—H6A | 109.7 | N3—C22—C23 | 176 (3) |
C6i—C6—H6A | 109.7 | C22—C23—H23A | 109.5 |
O1—C6—H6B | 109.7 | C22—C23—H23B | 109.5 |
C6i—C6—H6B | 109.7 | H23A—C23—H23B | 109.5 |
H6A—C6—H6B | 108.2 | C22—C23—H23C | 109.5 |
N2—C7—C8 | 113.3 (7) | H23A—C23—H23C | 109.5 |
N2—C7—H7A | 108.9 | H23B—C23—H23C | 109.5 |
C8—C7—H7A | 108.9 | F6—P1—F3 | 88.8 (9) |
N2—C7—H7B | 108.9 | F6—P1—F4 | 90.0 (7) |
C8—C7—H7B | 108.9 | F3—P1—F4 | 88.4 (6) |
H7A—C7—H7B | 107.7 | F6—P1—F1 | 178.0 (8) |
C9—C8—C21 | 121.6 (9) | F3—P1—F1 | 93.2 (8) |
C9—C8—C7 | 119.6 (9) | F4—P1—F1 | 90.4 (6) |
C21—C8—C7 | 118.7 (9) | F6—P1—F2 | 90.9 (7) |
C8—C9—C10 | 123.4 (9) | F3—P1—F2 | 93.1 (5) |
C8—C9—C14 | 118.6 (10) | F4—P1—F2 | 178.3 (6) |
C10—C9—C14 | 117.9 (10) | F1—P1—F2 | 88.7 (7) |
C11—C10—C9 | 122.6 (11) | F6—P1—F5 | 88.0 (8) |
C11—C10—H10 | 118.7 | F3—P1—F5 | 176.8 (9) |
C9—C10—H10 | 118.7 | F4—P1—F5 | 92.0 (5) |
C10—C11—C12 | 119.4 (11) | F1—P1—F5 | 90.0 (6) |
C10—C11—H11 | 120.3 | F2—P1—F5 | 86.6 (5) |
C12—C11—H11 | 120.3 | ||
C3—N2—C1—N1 | −0.7 (10) | C9—C10—C11—C12 | −3.4 (18) |
C7—N2—C1—N1 | 177.2 (8) | C10—C11—C12—C13 | 2.1 (19) |
C3—N2—C1—Hg1 | 179.4 (7) | C11—C12—C13—C14 | −1.0 (18) |
C7—N2—C1—Hg1 | −2.7 (13) | C8—C9—C14—C15 | 2.8 (15) |
C2—N1—C1—N2 | 0.5 (11) | C10—C9—C14—C15 | 179.9 (10) |
C4—N1—C1—N2 | −178.5 (8) | C8—C9—C14—C13 | −179.2 (9) |
C2—N1—C1—Hg1 | −179.6 (8) | C10—C9—C14—C13 | −2.1 (14) |
C4—N1—C1—Hg1 | 1.4 (13) | C12—C13—C14—C15 | 179.0 (11) |
C1—N1—C2—C3 | −0.1 (13) | C12—C13—C14—C9 | 1.0 (16) |
C4—N1—C2—C3 | 178.9 (9) | C9—C14—C15—C16 | −3.6 (16) |
N1—C2—C3—N2 | −0.3 (13) | C13—C14—C15—C16 | 178.5 (10) |
C1—N2—C3—C2 | 0.6 (12) | C14—C15—C16—C17 | 178.5 (10) |
C7—N2—C3—C2 | −177.2 (10) | C14—C15—C16—C21 | 1.6 (15) |
C1—N1—C4—C5 | −82.8 (11) | C15—C16—C17—C18 | 179.3 (10) |
C2—N1—C4—C5 | 98.3 (11) | C21—C16—C17—C18 | −3.7 (15) |
C6—O1—C5—C4 | 157.9 (9) | C16—C17—C18—C19 | 2.1 (16) |
N1—C4—C5—O1 | 54.2 (11) | C17—C18—C19—C20 | −1.6 (17) |
C5—O1—C6—C6i | 169.4 (10) | C18—C19—C20—C21 | 2.7 (16) |
C1—N2—C7—C8 | −175.1 (8) | C19—C20—C21—C8 | 176.4 (10) |
C3—N2—C7—C8 | 2.4 (14) | C19—C20—C21—C16 | −4.3 (14) |
N2—C7—C8—C9 | −83.4 (11) | C9—C8—C21—C20 | 177.5 (9) |
N2—C7—C8—C21 | 99.1 (10) | C7—C8—C21—C20 | −5.0 (14) |
C21—C8—C9—C10 | −177.0 (10) | C9—C8—C21—C16 | −1.8 (14) |
C7—C8—C9—C10 | 5.6 (15) | C7—C8—C21—C16 | 175.7 (8) |
C21—C8—C9—C14 | 0.0 (14) | C15—C16—C21—C20 | −178.3 (9) |
C7—C8—C9—C14 | −177.5 (8) | C17—C16—C21—C20 | 4.7 (13) |
C8—C9—C10—C11 | −179.6 (11) | C15—C16—C21—C8 | 1.1 (13) |
C14—C9—C10—C11 | 3.4 (17) | C17—C16—C21—C8 | −175.9 (8) |
Symmetry code: (i) −x, y, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | [Hg(C42H38N4O2)](PF6)2·2C2H3N |
Mr | 1203.4 |
Crystal system, space group | Orthorhombic, Pbcn |
Temperature (K) | 298 |
a, b, c (Å) | 19.774 (5), 9.774 (3), 24.250 (6) |
V (Å3) | 4687 (2) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 3.45 |
Crystal size (mm) | 0.24 × 0.08 × 0.06 |
Data collection | |
Diffractometer | Bruker APEXII CCD area-detector diffractometer |
Absorption correction | Multi-scan SADABS (Sheldrick, 1996) |
Tmin, Tmax | 0.775, 0.864 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 25351, 4804, 3011 |
Rint | 0.086 |
(sin θ/λ)max (Å−1) | 0.626 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.065, 0.169, 1.10 |
No. of reflections | 4804 |
No. of parameters | 313 |
No. of restraints | 3 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 1.46, −1.80 |
Computer programs: APEX2 (Bruker 2007), SAINT (Bruker 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
Acknowledgements
We acknowledge financial support from the Research Fund for the Education Department of Shanxi Province (No. 2010111) and the financial support from the Opening Foundation of Key Laboratory of Shanxi Province (No. 2009011059-7) and the Shanxi Natural Science Foundation of China (Nos 2006011069 and 2011011006-4).
References
Arduengo, A. J., Harlow, R. L. & Kline, M. (1991). J. Am. Chem. Soc. 113, 361–363. CSD CrossRef CAS Web of Science Google Scholar
Bruker (2007). APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Guo, W.-Y. & Dong, G.-Y. (2009). Acta Cryst. E65, m217. Web of Science CSD CrossRef IUCr Journals Google Scholar
Nielsen, D. J., Cavell, K. J., Skelton, B. W. & White, A. H. (2006). Organometallics, 25, 4850–4856. Web of Science CSD CrossRef CAS Google Scholar
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Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
N-heterocyclic carbene (NHC) ligands derived from imidazolium salts have seen an increasing use in organometallic chemistry and homogeneous catalysis (Arduengo et al.,1991). The mercury and silver complexes of bis-NHC ligands bearing a weakly coordinating ether functionality have been reported before (Guo & Dong, 2009; Nielsen et al., 2006). To study further the coordination chemistry of this kind of ligands, we report here the crystal structure of the title complex, (I)
The asymmetric unit of the title compound [C42H38HgN4O2]2+.2(PF6)-.2CH3CN (I) consists of one half of the [3,3'-Bis(9-anthracenylmethyl)-1,1'-(2,2'-oxydiethylene)bis-(imidazol- 2-ylidene)]mercury(II) cation, one hexafluorophosphate anion and one acetonitrile solvate molecule. The complete complex (Fig. 1) is generated by a crystallographic two-fold axis on which the HgII cation is situated. The HgII cation of (I) is coordinated by an anthracenyl-carbene ligand adopting a cis-conformation, the geometry of the HgII coordination being nearly linear, formed by two symmetry related C(carbene) atoms [Hg—C = 2.058 (9) Å, C— Hg—C = 175.8 (5)°]. The crystal packing exhibits intermolecular C—H···F weak interaction between the organic C atoms and the F atom of hexafluorophosphate anion with H4B···F distance of 2.48 Å.