metal-organic compounds
Bis{1,4-bis[(3-butylimidazolium-1-yl)methyl]benzene}silver(I) bis(hexafluoridophosphate)
aSchool of Chemical Sciences, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia, and bX-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
*Correspondence e-mail: hkfun@usm.my
The 2(C22H30N4)2](PF6)2, consists of one AgI ion, one 1,4-bis[(3-butylimidazolium-1-yl)methyl]benzene ligand and one discrete hexafluoridophosphate anion. The formula unit is generated by an inversion center. The unique AgI ion is coordinated by two C atoms of two heterocyclic carbene ligands in an essentially linear geometry. In the cations and anions are linked through weak C—H⋯F hydrogen bonds, forming a three-dimensional network.
of the title complex, [AgRelated literature
For applications of N-heterocyclic see: Tryg et al. (2005); Herrmann (2002); Herrmann et al. (1998); McGuinness et al. (1999); Tominaga et al. (2004); Magill et al. (2001); Yongbo et al. (2008); Garrison & Youngs (2005); Kascatan-Nebioglu et al. (2007); Özdemir et al. (2010); Medvetz et al. (2008); Catalano & Malwitz (2003). For a related structure, see: Chen & Liu (2003). For the stability of the temperature controller used in the data collection, see: Cosier & Glazer (1986).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2009); cell SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009).
Supporting information
10.1107/S1600536810036524/lh5130sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536810036524/lh5130Isup2.hkl
Silver oxide, Ag2O, (0.13 g, 0.56 mmol) was added to a solution of 1,4-bis(3-butylimidazolium-1-yl-metyl)benzene bis(hexafluoroposphate) (0.30 g, 0.467 mmol) in acetonitrile (40 ml). The mixture was refluxed at (343–363)K for 20 hr in glassware wrapped with aluminium foil to exclude the light. The resulting mixture was filtered through celite to remove excess Ag2O. After evaporation of the solvent, the white residue was washed with diethyl ether (2X5 ml) to afford the complex as a white powder. The yield was (0.25g, 45%), m.p = 550–552K. Crystal suitable for X-ray was obtained by slow evaporation of the salt solution in acetonitrile at 281K.
All H atoms were positioned geometrically with C–H = 0.93–0.97 Å and were refined using a riding model, with Uiso(H) = 1.2 or 1.5 Ueq(C). The highest peak in the final difference map is found at a distance of 0.87 Å from C8 and the deepest trough is 1.37 Å from H22C.
Data collection: APEX2 (Bruker, 2009); cell
SAINT (Bruker, 2009); data reduction: SAINT (Bruker, 2009); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).Fig. 1. The molecular structure of the title compound, showing 30% probability displacement ellipsoids and the atom-numbering scheme. N1A–N4A/C1A–C22A/P1A and F1A–F6A are generated by the symmetry code -x+1, -y+1, -z (H atoms are omitted for clarity). | |
Fig. 2. The crystal packing of the title compound, showing hydrogen bonds as dashed lines. |
[Ag2(C22H30N4)2](PF6)2 | Z = 1 |
Mr = 1206.68 | F(000) = 612 |
Triclinic, P1 | Dx = 1.614 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 11.3636 (15) Å | Cell parameters from 9946 reflections |
b = 11.4119 (15) Å | θ = 2.5–30.1° |
c = 11.9918 (15) Å | µ = 0.94 mm−1 |
α = 63.528 (2)° | T = 100 K |
β = 89.335 (2)° | Block, colourless |
γ = 65.811 (2)° | 0.24 × 0.14 × 0.08 mm |
V = 1241.7 (3) Å3 |
Bruker APEXII DUO CCD area-detector diffractometer | 7142 independent reflections |
Radiation source: fine-focus sealed tube | 6512 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.035 |
ϕ and ω scans | θmax = 30.0°, θmin = 1.9° |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | h = −15→15 |
Tmin = 0.806, Tmax = 0.930 | k = −16→16 |
25433 measured reflections | l = −16→16 |
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)] = 0.051 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.161 | H-atom parameters constrained |
S = 1.16 | w = 1/[σ2(Fo2) + (0.0678P)2 + 6.8955P] where P = (Fo2 + 2Fc2)/3 |
7142 reflections | (Δ/σ)max < 0.001 |
309 parameters | Δρmax = 3.16 e Å−3 |
0 restraints | Δρmin = −1.23 e Å−3 |
[Ag2(C22H30N4)2](PF6)2 | γ = 65.811 (2)° |
Mr = 1206.68 | V = 1241.7 (3) Å3 |
Triclinic, P1 | Z = 1 |
a = 11.3636 (15) Å | Mo Kα radiation |
b = 11.4119 (15) Å | µ = 0.94 mm−1 |
c = 11.9918 (15) Å | T = 100 K |
α = 63.528 (2)° | 0.24 × 0.14 × 0.08 mm |
β = 89.335 (2)° |
Bruker APEXII DUO CCD area-detector diffractometer | 7142 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | 6512 reflections with I > 2σ(I) |
Tmin = 0.806, Tmax = 0.930 | Rint = 0.035 |
25433 measured reflections |
R[F2 > 2σ(F2)] = 0.051 | 0 restraints |
wR(F2) = 0.161 | H-atom parameters constrained |
S = 1.16 | Δρmax = 3.16 e Å−3 |
7142 reflections | Δρmin = −1.23 e Å−3 |
309 parameters |
Experimental. The crystal was placed in the cold stream of an Oxford Cryosystems Cobra open-flow nitrogen cryostat (Cosier & Glazer, 1986) operating at 100.0 (1) K. |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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 > 2sigma(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 | ||
Ag1 | 0.46248 (3) | 0.12904 (3) | 0.32515 (3) | 0.01570 (10) | |
N1 | 0.2537 (4) | 0.4313 (4) | 0.2939 (3) | 0.0193 (7) | |
N2 | 0.1692 (4) | 0.2838 (4) | 0.3325 (3) | 0.0185 (7) | |
N3 | 0.2430 (3) | 1.0310 (4) | −0.3191 (3) | 0.0170 (6) | |
N4 | 0.3348 (4) | 1.1721 (4) | −0.3546 (3) | 0.0172 (6) | |
C1 | 0.3370 (5) | 0.5534 (5) | 0.0323 (4) | 0.0238 (9) | |
H1A | 0.3746 | 0.4529 | 0.0615 | 0.029* | |
C2 | 0.3085 (5) | 0.6488 (5) | −0.0971 (4) | 0.0237 (9) | |
H2A | 0.3260 | 0.6117 | −0.1538 | 0.028* | |
C3 | 0.2540 (4) | 0.7998 (5) | −0.1432 (4) | 0.0176 (7) | |
C4 | 0.2269 (5) | 0.8525 (5) | −0.0564 (4) | 0.0221 (8) | |
H4A | 0.1903 | 0.9529 | −0.0855 | 0.026* | |
C5 | 0.2544 (5) | 0.7555 (5) | 0.0743 (4) | 0.0214 (8) | |
H5A | 0.2349 | 0.7922 | 0.1311 | 0.026* | |
C6 | 0.3102 (4) | 0.6055 (4) | 0.1198 (4) | 0.0182 (7) | |
C7 | 0.3438 (5) | 0.4986 (5) | 0.2612 (4) | 0.0212 (8) | |
H7A | 0.4339 | 0.4226 | 0.2846 | 0.025* | |
H7B | 0.3375 | 0.5499 | 0.3090 | 0.025* | |
C8 | 0.2850 (4) | 0.2935 (4) | 0.3183 (3) | 0.0138 (6) | |
C9 | 0.1215 (5) | 0.5068 (5) | 0.2917 (4) | 0.0239 (9) | |
H9A | 0.0778 | 0.6033 | 0.2761 | 0.029* | |
C10 | 0.0679 (5) | 0.4132 (5) | 0.3166 (4) | 0.0241 (9) | |
H10A | −0.0192 | 0.4324 | 0.3219 | 0.029* | |
C11 | 0.1508 (5) | 0.1543 (5) | 0.3571 (4) | 0.0230 (8) | |
H11A | 0.0978 | 0.1383 | 0.4212 | 0.028* | |
H11B | 0.2362 | 0.0685 | 0.3908 | 0.028* | |
C12 | 0.0843 (5) | 0.1712 (5) | 0.2381 (4) | 0.0247 (9) | |
H12A | −0.0006 | 0.2576 | 0.2044 | 0.030* | |
H12B | 0.0682 | 0.0869 | 0.2616 | 0.030* | |
C13 | 0.1641 (5) | 0.1852 (6) | 0.1332 (5) | 0.0304 (10) | |
H13A | 0.1737 | 0.2743 | 0.1038 | 0.036* | |
H13B | 0.2516 | 0.1027 | 0.1680 | 0.036* | |
C14 | 0.0986 (7) | 0.1891 (8) | 0.0216 (6) | 0.0434 (14) | |
H14A | 0.1528 | 0.1942 | −0.0407 | 0.065* | |
H14B | 0.0139 | 0.2737 | −0.0160 | 0.065* | |
H14C | 0.0874 | 0.1019 | 0.0506 | 0.065* | |
C15 | 0.2246 (4) | 0.9007 (5) | −0.2858 (4) | 0.0199 (8) | |
H15A | 0.2817 | 0.8464 | −0.3245 | 0.024* | |
H15B | 0.1342 | 0.9315 | −0.3213 | 0.024* | |
C16 | 0.3620 (4) | 1.0335 (5) | −0.3299 (4) | 0.0186 (7) | |
C17 | 0.1448 (4) | 1.1638 (5) | −0.3387 (4) | 0.0229 (8) | |
H17A | 0.0565 | 1.1870 | −0.3363 | 0.027* | |
C18 | 0.2016 (4) | 1.2543 (5) | −0.3621 (4) | 0.0227 (8) | |
H18A | 0.1600 | 1.3516 | −0.3796 | 0.027* | |
C19 | 0.4337 (5) | 1.2264 (5) | −0.3649 (4) | 0.0220 (8) | |
H19A | 0.4153 | 1.3055 | −0.4508 | 0.026* | |
H19B | 0.5203 | 1.1479 | −0.3498 | 0.026* | |
C20 | 0.4346 (6) | 1.2817 (6) | −0.2701 (5) | 0.0320 (10) | |
H20A | 0.5015 | 1.3158 | −0.2814 | 0.038* | |
H20B | 0.3500 | 1.3657 | −0.2911 | 0.038* | |
C21 | 0.4601 (6) | 1.1718 (6) | −0.1314 (5) | 0.0320 (10) | |
H21A | 0.5518 | 1.0988 | −0.1039 | 0.038* | |
H21B | 0.4060 | 1.1219 | −0.1217 | 0.038* | |
C22 | 0.4300 (6) | 1.2429 (6) | −0.0469 (5) | 0.0317 (10) | |
H22A | 0.4439 | 1.1698 | 0.0396 | 0.048* | |
H22B | 0.3398 | 1.3169 | −0.0748 | 0.048* | |
H22C | 0.4872 | 1.2871 | −0.0519 | 0.048* | |
P1 | 0.76781 (11) | 0.28501 (11) | 0.51153 (10) | 0.0165 (2) | |
F1 | 0.8121 (5) | 0.2072 (4) | 0.6636 (3) | 0.0521 (11) | |
F2 | 0.6958 (3) | 0.1871 (4) | 0.5238 (4) | 0.0452 (9) | |
F3 | 0.7303 (4) | 0.3610 (3) | 0.3605 (3) | 0.0399 (8) | |
F4 | 0.8417 (3) | 0.3835 (3) | 0.4983 (3) | 0.0347 (7) | |
F5 | 0.6356 (3) | 0.4085 (3) | 0.5124 (3) | 0.0326 (7) | |
F6 | 0.9021 (3) | 0.1590 (3) | 0.5128 (3) | 0.0294 (6) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Ag1 | 0.01635 (15) | 0.01335 (14) | 0.01699 (14) | −0.00615 (11) | 0.00410 (10) | −0.00754 (11) |
N1 | 0.0274 (18) | 0.0148 (15) | 0.0154 (14) | −0.0088 (14) | 0.0061 (13) | −0.0076 (12) |
N2 | 0.0216 (17) | 0.0157 (15) | 0.0168 (15) | −0.0091 (13) | 0.0085 (13) | −0.0063 (12) |
N3 | 0.0173 (16) | 0.0161 (15) | 0.0147 (14) | −0.0069 (13) | 0.0025 (12) | −0.0058 (12) |
N4 | 0.0215 (17) | 0.0127 (14) | 0.0159 (14) | −0.0080 (13) | 0.0058 (12) | −0.0056 (12) |
C1 | 0.036 (2) | 0.0166 (18) | 0.0178 (18) | −0.0101 (17) | 0.0053 (16) | −0.0090 (15) |
C2 | 0.035 (2) | 0.0196 (19) | 0.0167 (17) | −0.0111 (18) | 0.0043 (16) | −0.0101 (16) |
C3 | 0.0198 (18) | 0.0199 (18) | 0.0152 (16) | −0.0115 (15) | 0.0034 (14) | −0.0080 (14) |
C4 | 0.030 (2) | 0.0160 (18) | 0.0188 (18) | −0.0100 (16) | 0.0060 (16) | −0.0081 (15) |
C5 | 0.031 (2) | 0.0185 (18) | 0.0179 (17) | −0.0114 (17) | 0.0064 (16) | −0.0110 (15) |
C6 | 0.024 (2) | 0.0165 (17) | 0.0159 (16) | −0.0113 (15) | 0.0051 (14) | −0.0074 (14) |
C7 | 0.032 (2) | 0.0172 (18) | 0.0157 (17) | −0.0124 (17) | 0.0034 (15) | −0.0077 (15) |
C8 | 0.0168 (17) | 0.0095 (15) | 0.0122 (15) | −0.0040 (13) | 0.0044 (12) | −0.0047 (12) |
C9 | 0.029 (2) | 0.0188 (19) | 0.0211 (19) | −0.0084 (17) | 0.0115 (16) | −0.0096 (16) |
C10 | 0.024 (2) | 0.0195 (19) | 0.024 (2) | −0.0060 (16) | 0.0102 (16) | −0.0106 (16) |
C11 | 0.028 (2) | 0.0199 (19) | 0.0218 (19) | −0.0134 (17) | 0.0084 (16) | −0.0078 (16) |
C12 | 0.026 (2) | 0.027 (2) | 0.024 (2) | −0.0164 (18) | 0.0064 (17) | −0.0110 (17) |
C13 | 0.035 (3) | 0.041 (3) | 0.026 (2) | −0.023 (2) | 0.0115 (19) | −0.019 (2) |
C14 | 0.058 (4) | 0.055 (4) | 0.034 (3) | −0.034 (3) | 0.010 (3) | −0.026 (3) |
C15 | 0.024 (2) | 0.0234 (19) | 0.0158 (16) | −0.0157 (17) | 0.0046 (14) | −0.0080 (15) |
C16 | 0.0218 (19) | 0.0181 (18) | 0.0155 (16) | −0.0095 (15) | 0.0031 (14) | −0.0072 (14) |
C17 | 0.0188 (19) | 0.023 (2) | 0.0209 (18) | −0.0061 (16) | 0.0003 (15) | −0.0092 (16) |
C18 | 0.022 (2) | 0.0176 (18) | 0.0221 (19) | −0.0029 (16) | 0.0036 (15) | −0.0094 (16) |
C19 | 0.032 (2) | 0.0203 (19) | 0.0213 (18) | −0.0178 (18) | 0.0104 (16) | −0.0103 (16) |
C20 | 0.039 (3) | 0.039 (3) | 0.026 (2) | −0.024 (2) | 0.009 (2) | −0.016 (2) |
C21 | 0.043 (3) | 0.033 (3) | 0.028 (2) | −0.022 (2) | 0.010 (2) | −0.017 (2) |
C22 | 0.037 (3) | 0.042 (3) | 0.031 (2) | −0.023 (2) | 0.012 (2) | −0.024 (2) |
P1 | 0.0183 (5) | 0.0159 (4) | 0.0173 (4) | −0.0078 (4) | 0.0065 (4) | −0.0096 (4) |
F1 | 0.085 (3) | 0.0284 (16) | 0.0167 (13) | −0.0055 (18) | 0.0095 (16) | −0.0087 (12) |
F2 | 0.0351 (18) | 0.0304 (16) | 0.087 (3) | −0.0241 (15) | 0.0275 (18) | −0.0333 (19) |
F3 | 0.068 (2) | 0.0251 (15) | 0.0168 (12) | −0.0126 (15) | 0.0001 (13) | −0.0101 (11) |
F4 | 0.0286 (15) | 0.0293 (15) | 0.057 (2) | −0.0171 (13) | 0.0074 (14) | −0.0260 (15) |
F5 | 0.0254 (15) | 0.0274 (14) | 0.0473 (18) | −0.0080 (12) | 0.0142 (13) | −0.0235 (14) |
F6 | 0.0217 (13) | 0.0262 (14) | 0.0408 (16) | −0.0056 (11) | 0.0103 (12) | −0.0214 (13) |
Ag1—C16i | 2.073 (4) | C12—C13 | 1.531 (7) |
Ag1—C8 | 2.089 (4) | C12—H12A | 0.9700 |
N1—C8 | 1.348 (5) | C12—H12B | 0.9700 |
N1—C9 | 1.386 (6) | C13—C14 | 1.514 (7) |
N1—C7 | 1.470 (6) | C13—H13A | 0.9700 |
N2—C8 | 1.367 (5) | C13—H13B | 0.9700 |
N2—C10 | 1.379 (5) | C14—H14A | 0.9600 |
N2—C11 | 1.476 (6) | C14—H14B | 0.9600 |
N3—C16 | 1.368 (5) | C14—H14C | 0.9600 |
N3—C17 | 1.379 (6) | C15—H15A | 0.9700 |
N3—C15 | 1.463 (5) | C15—H15B | 0.9700 |
N4—C16 | 1.367 (5) | C16—Ag1i | 2.073 (4) |
N4—C18 | 1.394 (6) | C17—C18 | 1.360 (7) |
N4—C19 | 1.470 (6) | C17—H17A | 0.9300 |
C1—C2 | 1.384 (6) | C18—H18A | 0.9300 |
C1—C6 | 1.395 (6) | C19—C20 | 1.530 (7) |
C1—H1A | 0.9300 | C19—H19A | 0.9700 |
C2—C3 | 1.394 (6) | C19—H19B | 0.9700 |
C2—H2A | 0.9300 | C20—C21 | 1.509 (7) |
C3—C4 | 1.392 (6) | C20—H20A | 0.9700 |
C3—C15 | 1.518 (5) | C20—H20B | 0.9700 |
C4—C5 | 1.400 (6) | C21—C22 | 1.516 (7) |
C4—H4A | 0.9300 | C21—H21A | 0.9700 |
C5—C6 | 1.384 (6) | C21—H21B | 0.9700 |
C5—H5A | 0.9300 | C22—H22A | 0.9600 |
C6—C7 | 1.516 (6) | C22—H22B | 0.9600 |
C7—H7A | 0.9700 | C22—H22C | 0.9600 |
C7—H7B | 0.9700 | P1—F5 | 1.588 (3) |
C9—C10 | 1.359 (7) | P1—F3 | 1.590 (3) |
C9—H9A | 0.9300 | P1—F2 | 1.594 (3) |
C10—H10A | 0.9300 | P1—F1 | 1.606 (3) |
C11—C12 | 1.518 (6) | P1—F6 | 1.606 (3) |
C11—H11A | 0.9700 | P1—F4 | 1.613 (3) |
C11—H11B | 0.9700 | ||
C16i—Ag1—C8 | 179.40 (15) | C12—C13—H13B | 109.3 |
C8—N1—C9 | 111.3 (4) | H13A—C13—H13B | 107.9 |
C8—N1—C7 | 124.8 (4) | C13—C14—H14A | 109.5 |
C9—N1—C7 | 123.7 (4) | C13—C14—H14B | 109.5 |
C8—N2—C10 | 111.7 (4) | H14A—C14—H14B | 109.5 |
C8—N2—C11 | 125.2 (4) | C13—C14—H14C | 109.5 |
C10—N2—C11 | 123.1 (4) | H14A—C14—H14C | 109.5 |
C16—N3—C17 | 111.9 (4) | H14B—C14—H14C | 109.5 |
C16—N3—C15 | 123.6 (4) | N3—C15—C3 | 113.3 (3) |
C17—N3—C15 | 124.5 (4) | N3—C15—H15A | 108.9 |
C16—N4—C18 | 111.5 (4) | C3—C15—H15A | 108.9 |
C16—N4—C19 | 124.8 (4) | N3—C15—H15B | 108.9 |
C18—N4—C19 | 123.6 (4) | C3—C15—H15B | 108.9 |
C2—C1—C6 | 121.1 (4) | H15A—C15—H15B | 107.7 |
C2—C1—H1A | 119.4 | N4—C16—N3 | 103.5 (4) |
C6—C1—H1A | 119.4 | N4—C16—Ag1i | 128.5 (3) |
C1—C2—C3 | 120.6 (4) | N3—C16—Ag1i | 127.8 (3) |
C1—C2—H2A | 119.7 | C18—C17—N3 | 106.8 (4) |
C3—C2—H2A | 119.7 | C18—C17—H17A | 126.6 |
C4—C3—C2 | 118.5 (4) | N3—C17—H17A | 126.6 |
C4—C3—C15 | 122.5 (4) | C17—C18—N4 | 106.2 (4) |
C2—C3—C15 | 119.0 (4) | C17—C18—H18A | 126.9 |
C3—C4—C5 | 120.6 (4) | N4—C18—H18A | 126.9 |
C3—C4—H4A | 119.7 | N4—C19—C20 | 112.2 (4) |
C5—C4—H4A | 119.7 | N4—C19—H19A | 109.2 |
C6—C5—C4 | 120.7 (4) | C20—C19—H19A | 109.2 |
C6—C5—H5A | 119.6 | N4—C19—H19B | 109.2 |
C4—C5—H5A | 119.6 | C20—C19—H19B | 109.2 |
C5—C6—C1 | 118.4 (4) | H19A—C19—H19B | 107.9 |
C5—C6—C7 | 121.5 (4) | C21—C20—C19 | 115.9 (4) |
C1—C6—C7 | 120.1 (4) | C21—C20—H20A | 108.3 |
N1—C7—C6 | 110.8 (3) | C19—C20—H20A | 108.3 |
N1—C7—H7A | 109.5 | C21—C20—H20B | 108.3 |
C6—C7—H7A | 109.5 | C19—C20—H20B | 108.3 |
N1—C7—H7B | 109.5 | H20A—C20—H20B | 107.4 |
C6—C7—H7B | 109.5 | C20—C21—C22 | 112.4 (5) |
H7A—C7—H7B | 108.1 | C20—C21—H21A | 109.1 |
N1—C8—N2 | 104.1 (3) | C22—C21—H21A | 109.1 |
N1—C8—Ag1 | 130.4 (3) | C20—C21—H21B | 109.1 |
N2—C8—Ag1 | 125.4 (3) | C22—C21—H21B | 109.1 |
C10—C9—N1 | 107.0 (4) | H21A—C21—H21B | 107.9 |
C10—C9—H9A | 126.5 | C21—C22—H22A | 109.5 |
N1—C9—H9A | 126.5 | C21—C22—H22B | 109.5 |
C9—C10—N2 | 105.9 (4) | H22A—C22—H22B | 109.5 |
C9—C10—H10A | 127.1 | C21—C22—H22C | 109.5 |
N2—C10—H10A | 127.1 | H22A—C22—H22C | 109.5 |
N2—C11—C12 | 112.6 (4) | H22B—C22—H22C | 109.5 |
N2—C11—H11A | 109.1 | F5—P1—F3 | 90.87 (19) |
C12—C11—H11A | 109.1 | F5—P1—F2 | 91.02 (18) |
N2—C11—H11B | 109.1 | F3—P1—F2 | 90.1 (2) |
C12—C11—H11B | 109.1 | F5—P1—F1 | 90.93 (19) |
H11A—C11—H11B | 107.8 | F3—P1—F1 | 177.6 (2) |
C11—C12—C13 | 114.1 (4) | F2—P1—F1 | 91.5 (2) |
C11—C12—H12A | 108.7 | F5—P1—F6 | 179.20 (18) |
C13—C12—H12A | 108.7 | F3—P1—F6 | 89.93 (18) |
C11—C12—H12B | 108.7 | F2—P1—F6 | 89.00 (17) |
C13—C12—H12B | 108.7 | F1—P1—F6 | 88.27 (19) |
H12A—C12—H12B | 107.6 | F5—P1—F4 | 89.49 (17) |
C14—C13—C12 | 111.8 (5) | F3—P1—F4 | 89.6 (2) |
C14—C13—H13A | 109.3 | F2—P1—F4 | 179.4 (2) |
C12—C13—H13A | 109.3 | F1—P1—F4 | 88.8 (2) |
C14—C13—H13B | 109.3 | F6—P1—F4 | 90.49 (17) |
C6—C1—C2—C3 | 1.0 (8) | C11—N2—C10—C9 | −177.9 (4) |
C1—C2—C3—C4 | −1.0 (7) | C8—N2—C11—C12 | −101.3 (5) |
C1—C2—C3—C15 | 179.8 (4) | C10—N2—C11—C12 | 76.3 (5) |
C2—C3—C4—C5 | 0.2 (7) | N2—C11—C12—C13 | 63.3 (5) |
C15—C3—C4—C5 | 179.3 (4) | C11—C12—C13—C14 | 175.3 (5) |
C3—C4—C5—C6 | 0.7 (7) | C16—N3—C15—C3 | 85.2 (5) |
C4—C5—C6—C1 | −0.8 (7) | C17—N3—C15—C3 | −92.3 (5) |
C4—C5—C6—C7 | 178.5 (4) | C4—C3—C15—N3 | 34.6 (6) |
C2—C1—C6—C5 | −0.1 (7) | C2—C3—C15—N3 | −146.2 (4) |
C2—C1—C6—C7 | −179.3 (5) | C18—N4—C16—N3 | −1.5 (4) |
C8—N1—C7—C6 | 103.8 (4) | C19—N4—C16—N3 | 175.3 (3) |
C9—N1—C7—C6 | −69.9 (5) | C18—N4—C16—Ag1i | 173.8 (3) |
C5—C6—C7—N1 | 109.1 (5) | C19—N4—C16—Ag1i | −9.4 (6) |
C1—C6—C7—N1 | −71.7 (5) | C17—N3—C16—N4 | 1.1 (4) |
C9—N1—C8—N2 | −0.4 (4) | C15—N3—C16—N4 | −176.7 (3) |
C7—N1—C8—N2 | −174.9 (3) | C17—N3—C16—Ag1i | −174.3 (3) |
C9—N1—C8—Ag1 | 176.5 (3) | C15—N3—C16—Ag1i | 8.0 (6) |
C7—N1—C8—Ag1 | 2.0 (6) | C16—N3—C17—C18 | −0.3 (5) |
C10—N2—C8—N1 | 0.2 (4) | C15—N3—C17—C18 | 177.4 (4) |
C11—N2—C8—N1 | 178.1 (4) | N3—C17—C18—N4 | −0.6 (5) |
C10—N2—C8—Ag1 | −176.8 (3) | C16—N4—C18—C17 | 1.4 (5) |
C11—N2—C8—Ag1 | 1.0 (5) | C19—N4—C18—C17 | −175.4 (4) |
C8—N1—C9—C10 | 0.5 (5) | C16—N4—C19—C20 | −122.3 (5) |
C7—N1—C9—C10 | 175.0 (4) | C18—N4—C19—C20 | 54.0 (6) |
N1—C9—C10—N2 | −0.3 (5) | N4—C19—C20—C21 | 58.0 (6) |
C8—N2—C10—C9 | 0.0 (5) | C19—C20—C21—C22 | −167.5 (5) |
Symmetry code: (i) −x+1, −y+1, −z. |
D—H···A | D—H | H···A | D···A | D—H···A |
C2—H2A···F3i | 0.93 | 2.42 | 3.251 (6) | 149 |
C5—H5A···F1ii | 0.93 | 2.52 | 3.392 (6) | 157 |
C7—H7B···F5ii | 0.97 | 2.44 | 3.367 (6) | 160 |
C11—H11A···F6iii | 0.97 | 2.44 | 3.364 (7) | 159 |
C11—H11B···F2iv | 0.97 | 2.38 | 3.129 (7) | 134 |
Symmetry codes: (i) −x+1, −y+1, −z; (ii) −x+1, −y+1, −z+1; (iii) x−1, y, z; (iv) −x+1, −y, −z+1. |
Experimental details
Crystal data | |
Chemical formula | [Ag2(C22H30N4)2](PF6)2 |
Mr | 1206.68 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 100 |
a, b, c (Å) | 11.3636 (15), 11.4119 (15), 11.9918 (15) |
α, β, γ (°) | 63.528 (2), 89.335 (2), 65.811 (2) |
V (Å3) | 1241.7 (3) |
Z | 1 |
Radiation type | Mo Kα |
µ (mm−1) | 0.94 |
Crystal size (mm) | 0.24 × 0.14 × 0.08 |
Data collection | |
Diffractometer | Bruker APEXII DUO CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2009) |
Tmin, Tmax | 0.806, 0.930 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 25433, 7142, 6512 |
Rint | 0.035 |
(sin θ/λ)max (Å−1) | 0.703 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.051, 0.161, 1.16 |
No. of reflections | 7142 |
No. of parameters | 309 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 3.16, −1.23 |
Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
C2—H2A···F3i | 0.93 | 2.42 | 3.251 (6) | 149 |
C5—H5A···F1ii | 0.93 | 2.52 | 3.392 (6) | 157 |
C7—H7B···F5ii | 0.97 | 2.44 | 3.367 (6) | 160 |
C11—H11A···F6iii | 0.97 | 2.44 | 3.364 (7) | 159 |
C11—H11B···F2iv | 0.97 | 2.38 | 3.129 (7) | 134 |
Symmetry codes: (i) −x+1, −y+1, −z; (ii) −x+1, −y+1, −z+1; (iii) x−1, y, z; (iv) −x+1, −y, −z+1. |
Footnotes
‡Thomson Reuters ResearcherID: A-3561-2009.
Acknowledgements
RAH, AW and SGT thank Universiti Sains Malaysia (USM) for the FRGS fund (203/PKIMIA/671115), short term grant (304/PKIMIA/639001) and RU grant (1001/PKIMIA/813023 and 1001/PKIMIA/811157). HKF and MH thank the Malaysian Government and Universiti Sains Malaysia for the Research University grant No. 1001/PFIZIK/811160. MH also thanks Universiti Sains Malaysia for a post-doctoral research fellowship.
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N-heterocyclic carbenes (NHCs) are now ubiquitous in their usage as ligands for transition metals (Tryg et al., 2005; Herrmann, 2002). Carbene ligands have some similarities to phosphine ligands, but metal- carbene complexes are often more stable than similar metal phosphine complexes (Herrmann et al., 1998; McGuinness et al., 1999). N-heterocyclic carbene complexes of different metals such as Pd and Ru have been used as catalysts for many reactions; for example C–C coupling reactions and reactions involving olefin metathesis (Tominaga et al., 2004; Magill et al., 2001). Among these metal -NHC complexes, the family of silver -NHC complexes have been receiving continuous attention since they are often used as convenient carbene transfer reagents to make other metal-NHC complexes (Yongbo et al., 2008). The chemistry of silver-NHC complexes has been recently reviewed (Garrison & Youngs, 2005; Kascatan-Nebioglu et al., 2007). The biological activity of many of the silver-NHC complexes as antimicrobial and antitumour were also confirmed (Özdemir et al., 2010; Medvetz et al., 2008).
The asymmetric unit of the title compound, (I), consists of one AgI cation, one 1,4-bis(3-butylimidazolium-1-yl-methyl)benzene ligand and one discrete hexafluoridophosphate anion (Fig. 1). The other half of the title complex is generated by an inversion center (1/2, 1/2, 0). Each AgI cation is bis-coordinated by two 1,4-bis(3-butylimidazolium-1-yl-methyl)benzene ligands. and displays an essentially linear geometry. The Ag1–C8 = 2.089 (4) Å bond length is comparable to the values reported for other [Ag(carbene)2]+ complexes (Chen & Liu, 2003).
In the crystal structure, the cations and anions are linked together through intermolecular C2—H2A···F3; C5—H5A···F1; C7—H7B···F5; C11—H11A···F6 and C11—H11B···F2 hydrogen bonds, forming a three-dimensional network (Table 2 and Fig. 2).