supplementary materials

Tetrabenzimidazolium hexacosaoxidooctamolybdate(VI)
The title compound, (C7H7N2)4[Mo8O26], features centrosymmetric [Mo8O26]4- polyoxidomolybdate(VI) anions and benzimidazolium cations. The constituent MoO6 octahedra show typical distortions. These components are connected to each other by way of N-H
O hydrogen bonds, thereby forming a three-dimensional framework.
NaMo4.2H2O (0.85 g 3.5 mmol) and benzimidazole (0.18 g 1.5 mmol) were dissolved in 10 ml water by vigorous stirring. 2 ml (1.5 M) HCl solution was added to the resulting suspension and stirred for 1 h. Then the suspension was sealed in a 20-ml Teflon-lined reactor with heating for 4 d at 438 K. After slowly cooling to room temperature over a period of 15 h, light yellow blocks of (I) were recovered.
The H atoms were positioned geometrically (C—H = 0.93 Å, N—H = 0.86 Å) and refined as ridimg with Uiso = 1.2Ueq(carrier).
Data collection: SMART (Bruker, 2002); cell refinement: SAINT (Bruker, 2002); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Bruker, 1997); program(s) used to refine structure: SHELXTL; molecular graphics: DIAMOND (Brandenburg, 1999); software used to prepare material for publication: SHELXTL.
Tetrabenzimidazolium hexacosaoxidooctamolybdate
top
Crystal data top
| (C7H7N2)4[Mo8O26] | Z = 1 |
| Mr = 1660.10 | F000 = 796 |
| Triclinic, P1 | Dx = 2.567 Mg m−3 |
| Hall symbol: -P 1 | Mo Kα radiation λ = 0.71073 Å |
| a = 9.229 (1) Å | Cell parameters from 3244 reflections |
| b = 10.225 (1) Å | θ = 1.7–26.8º |
| c = 11.966 (2) Å | µ = 2.36 mm−1 |
| α = 84.510 (2)º | T = 291 (2) K |
| β = 83.261 (2)º | Block, light yellow |
| γ = 73.667 (1)º | 0.24 × 0.17 × 0.12 mm |
| V = 1073.8 (2) Å3 | |
Data collection top
Bruker APEXII CCD diffractometer | 4166 independent reflections |
| Radiation source: fine-focus sealed tube | 3739 reflections with I > 2σ(I) |
| Monochromator: graphite | Rint = 0.016 |
| T = 291(2) K | θmax = 26.0º |
| ω scans | θmin = 2.1º |
Absorption correction: multi-scan (SADABS; Bruker, 2002) | h = −11→11 |
| Tmin = 0.630, Tmax = 0.750 | k = −12→12 |
| 9089 measured reflections | l = −14→14 |
Refinement top
| Refinement on F2 | Hydrogen site location: inferred from neighbouring sites |
| Least-squares matrix: full | H-atom parameters constrained |
| R[F2 > 2σ(F2)] = 0.017 | w = 1/[σ2(Fo2) + (0.0164P)2 + 0.4475P] where P = (Fo2 + 2Fc2)/3 |
| wR(F2) = 0.041 | (Δ/σ)max < 0.001 |
| S = 1.01 | Δρmax = 0.36 e Å−3 |
| 4166 reflections | Δρmin = −0.39 e Å−3 |
| 317 parameters | Extinction correction: SHELXL97, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
| Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.00508 (19) |
| Secondary atom site location: difference Fourier map | |
Crystal data top
| (C7H7N2)4[Mo8O26] | γ = 73.667 (1)º |
| Mr = 1660.10 | V = 1073.8 (2) Å3 |
| Triclinic, P1 | Z = 1 |
| a = 9.229 (1) Å | Mo Kα |
| b = 10.225 (1) Å | µ = 2.36 mm−1 |
| c = 11.966 (2) Å | T = 291 (2) K |
| α = 84.510 (2)º | 0.24 × 0.17 × 0.12 mm |
| β = 83.261 (2)º | |
Data collection top
Bruker APEXII CCD diffractometer | 4166 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2002) | 3739 reflections with I > 2σ(I) |
| Tmin = 0.630, Tmax = 0.750 | Rint = 0.016 |
| 9089 measured reflections | |
Refinement top
| R[F2 > 2σ(F2)] = 0.017 | 317 parameters |
| wR(F2) = 0.041 | H-atom parameters constrained |
| S = 1.01 | Δρmax = 0.36 e Å−3 |
| 4166 reflections | Δρmin = −0.39 e Å−3 |
Special details top
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 > 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. |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top| | x | y | z | Uiso*/Ueq | |
| Mo1 | 0.59927 (2) | 0.532347 (18) | 0.263597 (15) | 0.02152 (6) | |
| Mo2 | 0.62950 (2) | 0.795167 (18) | 0.385504 (16) | 0.02363 (6) | |
| Mo3 | 0.323131 (19) | 0.507990 (17) | 0.449853 (15) | 0.01839 (6) | |
| Mo4 | 0.351949 (19) | 0.767969 (17) | 0.572658 (15) | 0.02083 (6) | |
| O1 | 0.19688 (17) | 0.61523 (16) | 0.36842 (13) | 0.0302 (4) | |
| O2 | 0.24277 (16) | 0.37504 (15) | 0.49679 (13) | 0.0251 (3) | |
| O3 | 0.47554 (16) | 0.41241 (14) | 0.33915 (12) | 0.0210 (3) | |
| O4 | 0.46161 (18) | 0.63830 (16) | 0.18737 (13) | 0.0319 (4) | |
| O5 | 0.71731 (18) | 0.42950 (16) | 0.16958 (13) | 0.0335 (4) | |
| O6 | 0.71645 (16) | 0.65156 (15) | 0.28576 (13) | 0.0257 (3) | |
| O7 | 0.49682 (19) | 0.89710 (17) | 0.30301 (14) | 0.0369 (4) | |
| O8 | 0.76798 (19) | 0.87561 (17) | 0.38041 (15) | 0.0367 (4) | |
| O9 | 0.48639 (15) | 0.62428 (14) | 0.43799 (12) | 0.0205 (3) | |
| O10 | 0.51772 (16) | 0.83940 (14) | 0.52966 (13) | 0.0259 (3) | |
| O11 | 0.21769 (18) | 0.86259 (16) | 0.48887 (15) | 0.0331 (4) | |
| O12 | 0.27027 (15) | 0.60199 (14) | 0.59189 (12) | 0.0203 (3) | |
| O13 | 0.29207 (18) | 0.82691 (15) | 0.70370 (13) | 0.0305 (4) | |
| N1 | 0.0343 (2) | 0.2892 (2) | 0.33685 (17) | 0.0311 (4) | |
| H1 | −0.0577 | 0.3301 | 0.3599 | 0.037* | |
| N2 | 0.2501 (2) | 0.1370 (2) | 0.32224 (17) | 0.0361 (5) | |
| H2 | 0.3204 | 0.0629 | 0.3343 | 0.043* | |
| N3 | −0.0228 (2) | 0.9984 (2) | 0.21433 (16) | 0.0322 (5) | |
| H3 | −0.1129 | 1.0390 | 0.2419 | 0.039* | |
| N4 | 0.1923 (2) | 0.8467 (2) | 0.19049 (17) | 0.0361 (5) | |
| H4 | 0.2642 | 0.7732 | 0.2001 | 0.043* | |
| C1 | 0.3472 (4) | 0.3758 (4) | 0.0935 (2) | 0.0571 (9) | |
| H1A | 0.4219 | 0.3912 | 0.0387 | 0.069* | |
| C2 | 0.3790 (3) | 0.2587 (3) | 0.1625 (2) | 0.0467 (7) | |
| H2A | 0.4734 | 0.1949 | 0.1568 | 0.056* | |
| C3 | 0.2617 (3) | 0.2403 (2) | 0.2418 (2) | 0.0301 (5) | |
| C4 | 0.1232 (3) | 0.3380 (2) | 0.2503 (2) | 0.0295 (5) | |
| C5 | 0.0927 (3) | 0.4568 (3) | 0.1810 (2) | 0.0459 (7) | |
| H5 | −0.0004 | 0.5225 | 0.1874 | 0.055* | |
| C6 | 0.2088 (4) | 0.4715 (3) | 0.1025 (3) | 0.0578 (8) | |
| H6 | 0.1931 | 0.5493 | 0.0533 | 0.069* | |
| C7 | 0.1140 (3) | 0.1698 (3) | 0.3779 (2) | 0.0340 (5) | |
| H7 | 0.0796 | 0.1168 | 0.4370 | 0.041* | |
| C8 | 0.2702 (4) | 1.0854 (3) | −0.0449 (2) | 0.0535 (8) | |
| H8 | 0.3405 | 1.1001 | −0.1036 | 0.064* | |
| C9 | 0.1329 (4) | 1.1830 (3) | −0.0289 (2) | 0.0513 (8) | |
| H9 | 0.1144 | 1.2618 | −0.0770 | 0.062* | |
| C10 | 0.0226 (3) | 1.1684 (3) | 0.0553 (2) | 0.0405 (6) | |
| H10 | −0.0696 | 1.2346 | 0.0657 | 0.049* | |
| C11 | 0.0576 (3) | 1.0483 (2) | 0.12367 (19) | 0.0281 (5) | |
| C12 | 0.1963 (3) | 0.9507 (2) | 0.1081 (2) | 0.0298 (5) | |
| C13 | 0.3060 (3) | 0.9675 (3) | 0.0231 (2) | 0.0449 (7) | |
| H13 | 0.3990 | 0.9023 | 0.0127 | 0.054* | |
| C14 | 0.0600 (3) | 0.8788 (3) | 0.2520 (2) | 0.0368 (6) | |
| H14 | 0.0301 | 0.8251 | 0.3125 | 0.044* | |
Atomic displacement parameters (Å2) top| | U11 | U22 | U33 | U12 | U13 | U23 |
| Mo1 | 0.02068 (10) | 0.01992 (10) | 0.02009 (10) | −0.00139 (7) | 0.00210 (7) | 0.00032 (7) |
| Mo2 | 0.02158 (10) | 0.01685 (10) | 0.02935 (11) | −0.00353 (7) | 0.00360 (8) | 0.00124 (7) |
| Mo3 | 0.01566 (9) | 0.01633 (10) | 0.02133 (10) | −0.00196 (7) | −0.00036 (7) | −0.00102 (7) |
| Mo4 | 0.01792 (10) | 0.01417 (10) | 0.02733 (11) | −0.00122 (7) | 0.00287 (7) | −0.00206 (7) |
| O1 | 0.0263 (8) | 0.0277 (9) | 0.0334 (9) | −0.0019 (7) | −0.0066 (7) | 0.0022 (7) |
| O2 | 0.0219 (8) | 0.0219 (8) | 0.0313 (9) | −0.0065 (6) | 0.0000 (6) | −0.0013 (6) |
| O3 | 0.0204 (7) | 0.0180 (7) | 0.0224 (8) | −0.0020 (6) | 0.0008 (6) | −0.0038 (6) |
| O4 | 0.0282 (8) | 0.0321 (9) | 0.0299 (9) | −0.0013 (7) | −0.0023 (7) | 0.0032 (7) |
| O5 | 0.0335 (9) | 0.0305 (9) | 0.0293 (9) | −0.0004 (7) | 0.0067 (7) | −0.0027 (7) |
| O6 | 0.0225 (8) | 0.0229 (8) | 0.0282 (8) | −0.0048 (6) | 0.0062 (6) | 0.0001 (6) |
| O7 | 0.0344 (9) | 0.0287 (9) | 0.0376 (10) | 0.0034 (7) | 0.0013 (8) | 0.0041 (7) |
| O8 | 0.0301 (9) | 0.0274 (9) | 0.0518 (11) | −0.0116 (7) | 0.0069 (8) | −0.0008 (8) |
| O9 | 0.0195 (7) | 0.0168 (7) | 0.0230 (8) | −0.0026 (6) | 0.0005 (6) | −0.0009 (6) |
| O10 | 0.0250 (8) | 0.0197 (8) | 0.0329 (9) | −0.0075 (6) | 0.0035 (6) | −0.0053 (6) |
| O11 | 0.0285 (9) | 0.0235 (8) | 0.0448 (10) | −0.0034 (7) | −0.0065 (7) | 0.0023 (7) |
| O12 | 0.0181 (7) | 0.0167 (7) | 0.0235 (8) | −0.0023 (6) | 0.0026 (6) | −0.0008 (6) |
| O13 | 0.0304 (8) | 0.0226 (8) | 0.0334 (9) | −0.0007 (7) | 0.0054 (7) | −0.0059 (7) |
| N1 | 0.0201 (9) | 0.0316 (11) | 0.0385 (12) | −0.0027 (8) | 0.0014 (8) | −0.0048 (9) |
| N2 | 0.0284 (11) | 0.0328 (11) | 0.0419 (13) | 0.0038 (9) | −0.0098 (9) | −0.0062 (9) |
| N3 | 0.0224 (10) | 0.0354 (11) | 0.0325 (11) | 0.0012 (8) | 0.0022 (8) | −0.0050 (9) |
| N4 | 0.0257 (10) | 0.0314 (11) | 0.0413 (12) | 0.0059 (9) | −0.0022 (9) | 0.0033 (9) |
| C1 | 0.063 (2) | 0.087 (2) | 0.0351 (16) | −0.047 (2) | 0.0136 (14) | −0.0132 (16) |
| C2 | 0.0305 (14) | 0.071 (2) | 0.0411 (16) | −0.0146 (14) | 0.0042 (12) | −0.0237 (15) |
| C3 | 0.0251 (12) | 0.0352 (13) | 0.0305 (13) | −0.0062 (10) | −0.0026 (10) | −0.0119 (10) |
| C4 | 0.0283 (12) | 0.0278 (12) | 0.0331 (13) | −0.0078 (10) | −0.0028 (10) | −0.0053 (10) |
| C5 | 0.0525 (17) | 0.0352 (15) | 0.0475 (17) | −0.0080 (13) | −0.0071 (14) | 0.0014 (12) |
| C6 | 0.080 (2) | 0.0532 (19) | 0.0459 (18) | −0.0311 (18) | −0.0052 (17) | 0.0080 (14) |
| C7 | 0.0297 (13) | 0.0355 (14) | 0.0367 (14) | −0.0080 (11) | −0.0056 (10) | −0.0012 (11) |
| C8 | 0.0538 (19) | 0.078 (2) | 0.0345 (16) | −0.0326 (17) | 0.0006 (14) | 0.0053 (15) |
| C9 | 0.071 (2) | 0.0465 (17) | 0.0429 (17) | −0.0272 (16) | −0.0195 (15) | 0.0151 (13) |
| C10 | 0.0483 (16) | 0.0296 (13) | 0.0423 (16) | −0.0039 (12) | −0.0174 (13) | 0.0002 (11) |
| C11 | 0.0267 (12) | 0.0267 (12) | 0.0288 (12) | −0.0019 (10) | −0.0053 (10) | −0.0044 (9) |
| C12 | 0.0253 (12) | 0.0310 (13) | 0.0308 (13) | −0.0035 (10) | −0.0019 (9) | −0.0042 (10) |
| C13 | 0.0311 (14) | 0.0618 (19) | 0.0375 (15) | −0.0079 (13) | 0.0073 (12) | −0.0097 (13) |
| C14 | 0.0311 (13) | 0.0394 (14) | 0.0342 (14) | −0.0040 (11) | −0.0008 (11) | 0.0051 (11) |
Geometric parameters (Å, °) top
| Mo1—O5 | 1.6890 (15) | N2—C7 | 1.320 (3) |
| Mo1—O4 | 1.7113 (16) | N2—C3 | 1.378 (3) |
| Mo1—O6 | 1.8964 (15) | N2—H2 | 0.8600 |
| Mo1—O3 | 1.9896 (14) | N3—C14 | 1.316 (3) |
| Mo1—O12i | 2.3304 (14) | N3—C11 | 1.381 (3) |
| Mo1—O9 | 2.3744 (14) | N3—H3 | 0.8600 |
| Mo2—O8 | 1.6961 (16) | N4—C14 | 1.322 (3) |
| Mo2—O7 | 1.7115 (17) | N4—C12 | 1.384 (3) |
| Mo2—O6 | 1.9164 (15) | N4—H4 | 0.8600 |
| Mo2—O10 | 1.9270 (15) | C1—C2 | 1.368 (4) |
| Mo2—O2i | 2.2735 (15) | C1—C6 | 1.374 (5) |
| Mo2—O9 | 2.4668 (14) | C1—H1A | 0.9300 |
| Mo3—O1 | 1.6890 (15) | C2—C3 | 1.395 (3) |
| Mo3—O2 | 1.7426 (14) | C2—H2A | 0.9300 |
| Mo3—O3 | 1.9302 (14) | C3—C4 | 1.383 (3) |
| Mo3—O12 | 1.9761 (14) | C4—C5 | 1.383 (3) |
| Mo3—O9 | 2.1516 (14) | C5—C6 | 1.371 (4) |
| Mo3—O9i | 2.3643 (14) | C5—H5 | 0.9300 |
| Mo4—O11 | 1.7054 (16) | C6—H6 | 0.9300 |
| Mo4—O13 | 1.7081 (16) | C7—H7 | 0.9300 |
| Mo4—O10 | 1.8737 (14) | C8—C13 | 1.370 (4) |
| Mo4—O12 | 2.0262 (14) | C8—C9 | 1.381 (4) |
| Mo4—O9 | 2.2920 (14) | C8—H8 | 0.9300 |
| Mo4—O3i | 2.3282 (14) | C9—C10 | 1.375 (4) |
| O2—Mo2i | 2.2735 (15) | C9—H9 | 0.9300 |
| O3—Mo4i | 2.3282 (14) | C10—C11 | 1.388 (3) |
| O9—Mo3i | 2.3643 (14) | C10—H10 | 0.9300 |
| O12—Mo1i | 2.3304 (14) | C11—C12 | 1.389 (3) |
| N1—C7 | 1.318 (3) | C12—C13 | 1.382 (3) |
| N1—C4 | 1.388 (3) | C13—H13 | 0.9300 |
| N1—H1 | 0.8600 | C14—H14 | 0.9300 |
| | | |
| O5—Mo1—O4 | 105.31 (8) | Mo4—O9—Mo3i | 97.32 (5) |
| O5—Mo1—O6 | 101.08 (7) | Mo3—O9—Mo1 | 90.98 (5) |
| O4—Mo1—O6 | 101.29 (7) | Mo4—O9—Mo1 | 163.40 (7) |
| O5—Mo1—O3 | 102.06 (7) | Mo3i—O9—Mo1 | 96.91 (5) |
| O4—Mo1—O3 | 97.15 (7) | Mo3—O9—Mo2 | 164.34 (7) |
| O6—Mo1—O3 | 145.27 (6) | Mo4—O9—Mo2 | 86.20 (5) |
| O5—Mo1—O12i | 88.99 (7) | Mo3i—O9—Mo2 | 91.36 (5) |
| O4—Mo1—O12i | 163.57 (6) | Mo1—O9—Mo2 | 84.96 (4) |
| O6—Mo1—O12i | 83.44 (6) | Mo4—O10—Mo2 | 117.78 (8) |
| O3—Mo1—O12i | 71.47 (5) | Mo3—O12—Mo4 | 108.37 (6) |
| O5—Mo1—O9 | 160.57 (7) | Mo3—O12—Mo1i | 110.62 (6) |
| O4—Mo1—O9 | 93.95 (6) | Mo4—O12—Mo1i | 103.56 (6) |
| O6—Mo1—O9 | 77.16 (5) | C7—N1—C4 | 108.8 (2) |
| O3—Mo1—O9 | 72.42 (5) | C7—N1—H1 | 125.6 |
| O12i—Mo1—O9 | 71.58 (5) | C4—N1—H1 | 125.6 |
| O8—Mo2—O7 | 105.57 (8) | C7—N2—C3 | 109.2 (2) |
| O8—Mo2—O6 | 102.83 (7) | C7—N2—H2 | 125.4 |
| O7—Mo2—O6 | 98.70 (8) | C3—N2—H2 | 125.4 |
| O8—Mo2—O10 | 102.88 (8) | C14—N3—C11 | 109.3 (2) |
| O7—Mo2—O10 | 97.41 (7) | C14—N3—H3 | 125.4 |
| O6—Mo2—O10 | 144.59 (6) | C11—N3—H3 | 125.4 |
| O8—Mo2—O2i | 90.59 (7) | C14—N4—C12 | 109.0 (2) |
| O7—Mo2—O2i | 163.82 (7) | C14—N4—H4 | 125.5 |
| O6—Mo2—O2i | 77.95 (6) | C12—N4—H4 | 125.5 |
| O10—Mo2—O2i | 77.84 (6) | C2—C1—C6 | 122.2 (3) |
| O8—Mo2—O9 | 160.08 (7) | C2—C1—H1A | 118.9 |
| O7—Mo2—O9 | 94.33 (7) | C6—C1—H1A | 118.9 |
| O6—Mo2—O9 | 74.51 (5) | C1—C2—C3 | 116.3 (3) |
| O10—Mo2—O9 | 73.00 (5) | C1—C2—H2A | 121.9 |
| O2i—Mo2—O9 | 69.50 (5) | C3—C2—H2A | 121.9 |
| O1—Mo3—O2 | 105.03 (7) | N2—C3—C4 | 106.3 (2) |
| O1—Mo3—O3 | 102.28 (7) | N2—C3—C2 | 132.9 (2) |
| O2—Mo3—O3 | 97.94 (6) | C4—C3—C2 | 120.9 (2) |
| O1—Mo3—O12 | 100.13 (7) | C5—C4—C3 | 122.5 (2) |
| O2—Mo3—O12 | 95.90 (6) | C5—C4—N1 | 131.4 (2) |
| O3—Mo3—O12 | 149.52 (6) | C3—C4—N1 | 106.2 (2) |
| O1—Mo3—O9 | 98.18 (7) | C6—C5—C4 | 115.6 (3) |
| O2—Mo3—O9 | 156.70 (6) | C6—C5—H5 | 122.2 |
| O3—Mo3—O9 | 78.80 (6) | C4—C5—H5 | 122.2 |
| O12—Mo3—O9 | 77.78 (5) | C5—C6—C1 | 122.6 (3) |
| O1—Mo3—O9i | 173.99 (6) | C5—C6—H6 | 118.7 |
| O2—Mo3—O9i | 80.91 (6) | C1—C6—H6 | 118.7 |
| O3—Mo3—O9i | 77.44 (6) | N1—C7—N2 | 109.5 (2) |
| O12—Mo3—O9i | 78.12 (5) | N1—C7—H7 | 125.2 |
| O9—Mo3—O9i | 75.85 (6) | N2—C7—H7 | 125.2 |
| O11—Mo4—O13 | 104.73 (8) | C13—C8—C9 | 122.0 (3) |
| O11—Mo4—O10 | 103.28 (7) | C13—C8—H8 | 119.0 |
| O13—Mo4—O10 | 102.11 (7) | C9—C8—H8 | 119.0 |
| O11—Mo4—O12 | 95.20 (7) | C10—C9—C8 | 122.5 (3) |
| O13—Mo4—O12 | 98.38 (7) | C10—C9—H9 | 118.7 |
| O10—Mo4—O12 | 147.72 (6) | C8—C9—H9 | 118.7 |
| O11—Mo4—O9 | 96.07 (7) | C9—C10—C11 | 115.7 (3) |
| O13—Mo4—O9 | 158.39 (6) | C9—C10—H10 | 122.2 |
| O10—Mo4—O9 | 78.28 (6) | C11—C10—H10 | 122.2 |
| O12—Mo4—O9 | 73.59 (5) | N3—C11—C10 | 132.2 (2) |
| O11—Mo4—O3i | 163.43 (7) | N3—C11—C12 | 106.1 (2) |
| O13—Mo4—O3i | 86.70 (6) | C10—C11—C12 | 121.7 (2) |
| O10—Mo4—O3i | 85.57 (6) | C13—C12—N4 | 132.2 (2) |
| O12—Mo4—O3i | 70.93 (5) | C13—C12—C11 | 121.7 (2) |
| O9—Mo4—O3i | 71.74 (5) | N4—C12—C11 | 106.1 (2) |
| Mo3—O2—Mo2i | 118.22 (7) | C8—C13—C12 | 116.3 (3) |
| Mo3—O3—Mo1 | 111.04 (7) | C8—C13—H13 | 121.8 |
| Mo3—O3—Mo4i | 110.02 (6) | C12—C13—H13 | 121.8 |
| Mo1—O3—Mo4i | 104.82 (6) | N3—C14—N4 | 109.6 (2) |
| Mo1—O6—Mo2 | 118.12 (7) | N3—C14—H14 | 125.2 |
| Mo3—O9—Mo4 | 93.78 (5) | N4—C14—H14 | 125.2 |
| Mo3—O9—Mo3i | 104.15 (6) | | |
| | | |
| O1—Mo3—O2—Mo2i | −178.62 (8) | O5—Mo1—O9—Mo2 | 101.4 (2) |
| O3—Mo3—O2—Mo2i | 76.32 (8) | O4—Mo1—O9—Mo2 | −86.24 (6) |
| O12—Mo3—O2—Mo2i | −76.45 (8) | O6—Mo1—O9—Mo2 | 14.45 (5) |
| O9—Mo3—O2—Mo2i | −3.8 (2) | O3—Mo1—O9—Mo2 | 177.50 (6) |
| O9i—Mo3—O2—Mo2i | 0.49 (7) | O12i—Mo1—O9—Mo2 | 101.73 (5) |
| O1—Mo3—O3—Mo1 | 73.20 (9) | O8—Mo2—O9—Mo3 | −174.9 (2) |
| O2—Mo3—O3—Mo1 | −179.44 (7) | O7—Mo2—O9—Mo3 | 7.9 (3) |
| O12—Mo3—O3—Mo1 | −63.25 (14) | O6—Mo2—O9—Mo3 | −89.9 (3) |
| O9—Mo3—O3—Mo1 | −22.85 (7) | O10—Mo2—O9—Mo3 | 104.3 (3) |
| O9i—Mo3—O3—Mo1 | −100.65 (7) | O2i—Mo2—O9—Mo3 | −172.6 (3) |
| O1—Mo3—O3—Mo4i | −171.21 (7) | O8—Mo2—O9—Mo4 | 94.7 (2) |
| O2—Mo3—O3—Mo4i | −63.85 (8) | O7—Mo2—O9—Mo4 | −82.57 (7) |
| O12—Mo3—O3—Mo4i | 52.35 (13) | O6—Mo2—O9—Mo4 | 179.59 (6) |
| O9—Mo3—O3—Mo4i | 92.74 (6) | O10—Mo2—O9—Mo4 | 13.86 (6) |
| O9i—Mo3—O3—Mo4i | 14.94 (5) | O2i—Mo2—O9—Mo4 | 96.92 (6) |
| O5—Mo1—O3—Mo3 | −178.06 (7) | O8—Mo2—O9—Mo3i | −2.6 (2) |
| O4—Mo1—O3—Mo3 | −70.67 (9) | O7—Mo2—O9—Mo3i | −179.81 (6) |
| O6—Mo1—O3—Mo3 | 51.17 (13) | O6—Mo2—O9—Mo3i | 82.35 (6) |
| O12i—Mo1—O3—Mo3 | 97.14 (7) | O10—Mo2—O9—Mo3i | −83.38 (6) |
| O9—Mo1—O3—Mo3 | 21.23 (6) | O2i—Mo2—O9—Mo3i | −0.32 (5) |
| O5—Mo1—O3—Mo4i | 63.17 (8) | O8—Mo2—O9—Mo1 | −99.4 (2) |
| O4—Mo1—O3—Mo4i | 170.56 (7) | O7—Mo2—O9—Mo1 | 83.37 (7) |
| O6—Mo1—O3—Mo4i | −67.60 (12) | O6—Mo2—O9—Mo1 | −14.47 (5) |
| O12i—Mo1—O3—Mo4i | −21.63 (5) | O10—Mo2—O9—Mo1 | 179.80 (6) |
| O9—Mo1—O3—Mo4i | −97.54 (6) | O2i—Mo2—O9—Mo1 | −97.14 (5) |
| O5—Mo1—O6—Mo2 | 178.51 (8) | O11—Mo4—O10—Mo2 | −73.22 (10) |
| O4—Mo1—O6—Mo2 | 70.24 (10) | O13—Mo4—O10—Mo2 | 178.25 (8) |
| O3—Mo1—O6—Mo2 | −50.49 (15) | O12—Mo4—O10—Mo2 | 50.01 (16) |
| O12i—Mo1—O6—Mo2 | −93.82 (8) | O9—Mo4—O10—Mo2 | 20.33 (8) |
| O9—Mo1—O6—Mo2 | −21.28 (8) | O3i—Mo4—O10—Mo2 | 92.58 (8) |
| O8—Mo2—O6—Mo1 | −179.67 (9) | O8—Mo2—O10—Mo4 | −179.12 (9) |
| O7—Mo2—O6—Mo1 | −71.42 (10) | O7—Mo2—O10—Mo4 | 72.98 (10) |
| O10—Mo2—O6—Mo1 | 44.70 (16) | O6—Mo2—O10—Mo4 | −43.50 (16) |
| O2i—Mo2—O6—Mo1 | 92.49 (8) | O2i—Mo2—O10—Mo4 | −91.32 (9) |
| O9—Mo2—O6—Mo1 | 20.70 (7) | O9—Mo2—O10—Mo4 | −19.30 (7) |
| O1—Mo3—O9—Mo4 | 80.78 (7) | O1—Mo3—O12—Mo4 | −74.85 (8) |
| O2—Mo3—O9—Mo4 | −94.17 (15) | O2—Mo3—O12—Mo4 | 178.69 (7) |
| O3—Mo3—O9—Mo4 | −178.23 (6) | O3—Mo3—O12—Mo4 | 62.00 (13) |
| O12—Mo3—O9—Mo4 | −17.88 (5) | O9—Mo3—O12—Mo4 | 21.42 (6) |
| O9i—Mo3—O9—Mo4 | −98.53 (6) | O9i—Mo3—O12—Mo4 | 99.29 (7) |
| O1—Mo3—O9—Mo3i | 179.31 (7) | O1—Mo3—O12—Mo1i | 172.27 (7) |
| O2—Mo3—O9—Mo3i | 4.35 (18) | O2—Mo3—O12—Mo1i | 65.81 (7) |
| O3—Mo3—O9—Mo3i | −79.70 (6) | O3—Mo3—O12—Mo1i | −50.88 (13) |
| O12—Mo3—O9—Mo3i | 80.65 (6) | O9—Mo3—O12—Mo1i | −91.46 (6) |
| O9i—Mo3—O9—Mo3i | 0.0 | O9i—Mo3—O12—Mo1i | −13.59 (5) |
| O1—Mo3—O9—Mo1 | −83.31 (7) | O11—Mo4—O12—Mo3 | 74.37 (8) |
| O2—Mo3—O9—Mo1 | 101.73 (15) | O13—Mo4—O12—Mo3 | −179.88 (7) |
| O3—Mo3—O9—Mo1 | 17.68 (5) | O10—Mo4—O12—Mo3 | −50.81 (14) |
| O12—Mo3—O9—Mo1 | 178.03 (6) | O9—Mo4—O12—Mo3 | −20.44 (6) |
| O9i—Mo3—O9—Mo1 | 97.38 (6) | O3i—Mo4—O12—Mo3 | −96.34 (7) |
| O1—Mo3—O9—Mo2 | −8.6 (3) | O11—Mo4—O12—Mo1i | −168.13 (7) |
| O2—Mo3—O9—Mo2 | 176.4 (2) | O13—Mo4—O12—Mo1i | −62.38 (7) |
| O3—Mo3—O9—Mo2 | 92.4 (3) | O10—Mo4—O12—Mo1i | 66.70 (13) |
| O12—Mo3—O9—Mo2 | −107.3 (3) | O9—Mo4—O12—Mo1i | 97.06 (6) |
| O9i—Mo3—O9—Mo2 | 172.1 (3) | O3i—Mo4—O12—Mo1i | 21.17 (5) |
| O11—Mo4—O9—Mo3 | −75.88 (7) | C6—C1—C2—C3 | 1.0 (4) |
| O13—Mo4—O9—Mo3 | 88.44 (18) | C7—N2—C3—C4 | −0.9 (3) |
| O10—Mo4—O9—Mo3 | −178.24 (6) | C7—N2—C3—C2 | 179.0 (3) |
| O12—Mo4—O9—Mo3 | 17.77 (5) | C1—C2—C3—N2 | 178.7 (3) |
| O3i—Mo4—O9—Mo3 | 92.60 (6) | C1—C2—C3—C4 | −1.4 (4) |
| O11—Mo4—O9—Mo3i | 179.31 (6) | N2—C3—C4—C5 | −179.3 (2) |
| O13—Mo4—O9—Mo3i | −16.37 (19) | C2—C3—C4—C5 | 0.7 (4) |
| O10—Mo4—O9—Mo3i | 76.96 (6) | N2—C3—C4—N1 | 0.5 (2) |
| O12—Mo4—O9—Mo3i | −87.04 (6) | C2—C3—C4—N1 | −179.4 (2) |
| O3i—Mo4—O9—Mo3i | −12.20 (4) | C7—N1—C4—C5 | 179.8 (3) |
| O11—Mo4—O9—Mo1 | 30.5 (2) | C7—N1—C4—C3 | 0.0 (3) |
| O13—Mo4—O9—Mo1 | −165.2 (2) | C3—C4—C5—C6 | 0.4 (4) |
| O10—Mo4—O9—Mo1 | −71.9 (2) | N1—C4—C5—C6 | −179.4 (3) |
| O12—Mo4—O9—Mo1 | 124.1 (2) | C4—C5—C6—C1 | −0.8 (5) |
| O3i—Mo4—O9—Mo1 | −161.0 (2) | C2—C1—C6—C5 | 0.1 (5) |
| O11—Mo4—O9—Mo2 | 88.42 (6) | C4—N1—C7—N2 | −0.6 (3) |
| O13—Mo4—O9—Mo2 | −107.26 (17) | C3—N2—C7—N1 | 0.9 (3) |
| O10—Mo4—O9—Mo2 | −13.93 (6) | C13—C8—C9—C10 | −0.6 (5) |
| O12—Mo4—O9—Mo2 | −177.93 (6) | C8—C9—C10—C11 | −0.2 (4) |
| O3i—Mo4—O9—Mo2 | −103.09 (5) | C14—N3—C11—C10 | −179.7 (3) |
| O5—Mo1—O9—Mo3 | −93.8 (2) | C14—N3—C11—C12 | 0.0 (3) |
| O4—Mo1—O9—Mo3 | 78.61 (7) | C9—C10—C11—N3 | −179.7 (3) |
| O6—Mo1—O9—Mo3 | 179.31 (6) | C9—C10—C11—C12 | 0.7 (4) |
| O3—Mo1—O9—Mo3 | −17.65 (5) | C14—N4—C12—C13 | −179.6 (3) |
| O12i—Mo1—O9—Mo3 | −93.42 (5) | C14—N4—C12—C11 | 0.0 (3) |
| O5—Mo1—O9—Mo4 | 159.5 (2) | N3—C11—C12—C13 | 179.7 (2) |
| O4—Mo1—O9—Mo4 | −28.1 (2) | C10—C11—C12—C13 | −0.6 (4) |
| O6—Mo1—O9—Mo4 | 72.6 (2) | N3—C11—C12—N4 | 0.0 (3) |
| O3—Mo1—O9—Mo4 | −124.4 (2) | C10—C11—C12—N4 | 179.7 (2) |
| O12i—Mo1—O9—Mo4 | 159.8 (2) | C9—C8—C13—C12 | 0.7 (4) |
| O5—Mo1—O9—Mo3i | 10.6 (2) | N4—C12—C13—C8 | 179.5 (3) |
| O4—Mo1—O9—Mo3i | −177.01 (6) | C11—C12—C13—C8 | −0.1 (4) |
| O6—Mo1—O9—Mo3i | −76.31 (6) | C11—N3—C14—N4 | 0.0 (3) |
| O3—Mo1—O9—Mo3i | 86.73 (6) | C12—N4—C14—N3 | −0.1 (3) |
| O12i—Mo1—O9—Mo3i | 10.96 (4) | | |
| Symmetry codes: (i) −x+1, −y+1, −z+1. |
Hydrogen-bond geometry (Å, °) top
| D—H···A | D—H | H···A | D···A | D—H···A |
| N1—H1···O12ii | 0.86 | 1.93 | 2.780 (2) | 172 |
| N2—H2···O7iii | 0.86 | 2.02 | 2.846 (3) | 160 |
| N3—H3···O13iv | 0.86 | 1.92 | 2.756 (2) | 164 |
| N4—H4···O4 | 0.86 | 1.95 | 2.781 (3) | 162 |
| Symmetry codes: (ii) −x, −y+1, −z+1; (iii) x, y−1, z; (iv) −x, −y+2, −z+1. |
Selected geometric parameters (Å) top| Mo1—O5 | 1.6890 (15) | Mo3—O1 | 1.6890 (15) |
| Mo1—O4 | 1.7113 (16) | Mo3—O2 | 1.7426 (14) |
| Mo1—O6 | 1.8964 (15) | Mo3—O3 | 1.9302 (14) |
| Mo1—O3 | 1.9896 (14) | Mo3—O12 | 1.9761 (14) |
| Mo1—O12i | 2.3304 (14) | Mo3—O9 | 2.1516 (14) |
| Mo1—O9 | 2.3744 (14) | Mo3—O9i | 2.3643 (14) |
| Mo2—O8 | 1.6961 (16) | Mo4—O11 | 1.7054 (16) |
| Mo2—O7 | 1.7115 (17) | Mo4—O13 | 1.7081 (16) |
| Mo2—O6 | 1.9164 (15) | Mo4—O10 | 1.8737 (14) |
| Mo2—O10 | 1.9270 (15) | Mo4—O12 | 2.0262 (14) |
| Mo2—O2i | 2.2735 (15) | Mo4—O9 | 2.2920 (14) |
| Mo2—O9 | 2.4668 (14) | Mo4—O3i | 2.3282 (14) |
| Symmetry codes: (i) −x+1, −y+1, −z+1. |
Hydrogen-bond geometry (Å, °) top
| D—H···A | D—H | H···A | D···A | D—H···A |
| N1—H1···O12ii | 0.86 | 1.93 | 2.780 (2) | 172 |
| N2—H2···O7iii | 0.86 | 2.02 | 2.846 (3) | 160 |
| N3—H3···O13iv | 0.86 | 1.92 | 2.756 (2) | 164 |
| N4—H4···O4 | 0.86 | 1.95 | 2.781 (3) | 162 |
| Symmetry codes: (ii) −x, −y+1, −z+1; (iii) x, y−1, z; (iv) −x, −y+2, −z+1. |
This work was supported by the Natural Science Foundation of Jilin Province (No. 2005103).
Brandenburg, K. (1999). DIAMOND (Version 2.1c). Crystal Impact GbR, Bonn, Germany.
Brown, I. D. & Altermatt, D. (1985). Acta Cryst. B41, 244–247.
Bruker (1997). SHELXTL (Version 5.10). Bruker AXS Inc., Madison, Wisconsin, USA.
Bruker (2002). SMART (Version 5.611), SAINT (Version 6.0) and SADABS (Version 2.03). Bruker AXS Inc., Madison, Wisconsin, USA.
Liu, B., Li, C.-B., Shi, Z. & Li, Y.-W. (2006). Acta Cryst. E62, m2764–m2766.
Recently, much attention has focused on the intriguing structure of polyoxometalate (POM) clusters. To extend our recent work, where [Mo8O26]4− units are hydrogen bonded to organic cations forming three-dimensional networks (Liu et al., 2006), we obtained the title compound, (I), by using sodium molybadate and benzimidazole as the starting materials.
Compound (I) is composed of centrosymmetric [Mo8O26]4− anions and protonated benzimidazole cations as shown in Fig. 1. The [Mo8O26]4− anion is constructed from eight MoO6 units. The four unique Mo atoms exhibit distorted octahedral geometries, with the Mo—O distances in the expected range (Table 1). Bond-valence sum calculations (Brown & Altermatt, 1985) indicate oxidation states of 5.93–5.98 for Mo, in agreement with the expected value of 6. By way of N—H···O hydrogen bonds (Table 2) between the organic cations and the anions, a three-dimensional network is formed (Fig. 2).