metal-organic compounds
(Acetylacetonato)dibromido[2,2-diphenylhydrazin-1-ido(1−)][2,2-diphenylhydrazin-1-ido(2−)]molybdenum(VI)
aInstituto de Ciencias Químicas, Universidad Austral de Chile, Avda. Los Robles s/n, Campus Isla Teja, Casilla 567, Valdivia, Chile, bDepartamento de Ciencias Físicas, Universidad Andres Bello, Avda. República 220, Santiago de Chile, Chile, and cLaboratorio de Cristalografía, Difracción de Rayos-X, Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Av. Blanco Encalada 2008, Santiago, Chile
*Correspondence e-mail: lalvarez@unab.cl
In the title compound, [MoBr2(C12H11N2)(C12H10N2)(C5H7O2)], the MoVI atom is six-coordinated in a distorted octahedral geometry by two N atoms from the diphenylhydrazide(1−) and diphenylhydrazide(2−) ligands, two O atoms from a bidentate acetylacetonate ligand and two Br− ions. The molecules form an inversion dimer via a pair of weak C—H⋯O hydrogen bonds and a π–π stacking interaction with a centroid–centroid distance of 3.7401 (12) Å. Weak intramolecular C—H⋯Br interactions and an intramolecular π–π stacking interaction with a centroid–centroid distance of 3.8118 (15) Å are also observed.
Related literature
For related structures, see: Bustos et al. (1994, 2006). For the importance of these compounds as potential models of intermediates in the conversion of coordinated dinitrogen into ammonia, see: Henderson et al. (1983); McCleverty (1987).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2001); cell SAINT (Bruker, 2000); 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: PLATON (Spek, 2009) and Mercury (Macrae et al., 2006).
Supporting information
10.1107/S1600536811015881/is2705sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811015881/is2705Isup2.hkl
This compound was synthesized as was described in the literature (Bustos et al., 1994), and single crystals suitable for X-ray diffraction were obtained by diffusion of diethylether on a concentrated solution of the compound in chloroform.
The H atom attached to the N1 atom was located in a difference Fourier map and refined freely. Other H atoms were placed in geometrically idealized positions and constrained to ride on their parent atoms, with aromatic C—H = 0.95 Å and Uiso(H) = 1.2Ueq(C), and methyl C—H = 0.98 Å and Uiso(H) = 1.5Ueq(C). The methyl groups were allowed to rotate.
Data collection: SMART (Bruker, 2001); cell
SAINT (Bruker, 2000); data reduction: SAINT (Bruker, 2000); 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: PLATON (Spek, 2009) and Mercury (Macrae et al., 2006).[MoBr2(C12H11N2)(C12H10N2)(C5H7O2)] | F(000) = 1432 |
Mr = 720.29 | Dx = 1.702 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 999 reflections |
a = 9.5828 (11) Å | θ = 2.1–26.3° |
b = 32.187 (4) Å | µ = 3.34 mm−1 |
c = 9.1455 (10) Å | T = 150 K |
β = 94.601 (2)° | Block, red |
V = 2811.8 (6) Å3 | 0.36 × 0.31 × 0.29 mm |
Z = 4 |
Bruker D8 Discover with SMART CCD area-detector diffractometer | 5678 independent reflections |
Radiation source: fine-focus sealed tube | 5133 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.021 |
ϕ and ω scans | θmax = 26.3°, θmin = 2.1° |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | h = −11→11 |
Tmin = 0.324, Tmax = 0.379 | k = −39→40 |
22331 measured reflections | l = −11→11 |
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)] = 0.024 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.063 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | w = 1/[σ2(Fo2) + (0.034P)2 + 1.394P] where P = (Fo2 + 2Fc2)/3 |
5678 reflections | (Δ/σ)max = 0.001 |
349 parameters | Δρmax = 0.68 e Å−3 |
0 restraints | Δρmin = −0.29 e Å−3 |
[MoBr2(C12H11N2)(C12H10N2)(C5H7O2)] | V = 2811.8 (6) Å3 |
Mr = 720.29 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 9.5828 (11) Å | µ = 3.34 mm−1 |
b = 32.187 (4) Å | T = 150 K |
c = 9.1455 (10) Å | 0.36 × 0.31 × 0.29 mm |
β = 94.601 (2)° |
Bruker D8 Discover with SMART CCD area-detector diffractometer | 5678 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | 5133 reflections with I > 2σ(I) |
Tmin = 0.324, Tmax = 0.379 | Rint = 0.021 |
22331 measured reflections |
R[F2 > 2σ(F2)] = 0.024 | 0 restraints |
wR(F2) = 0.063 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | Δρmax = 0.68 e Å−3 |
5678 reflections | Δρmin = −0.29 e Å−3 |
349 parameters |
Geometry. Bond distances, angles etc. have been calculated using the rounded fractional coordinates. All su's are estimated from the variances of the (full) variance-covariance matrix. The cell e.s.d.'s are taken into account in the estimation of distances, angles and torsion angles |
Refinement. Refinement on F2 for ALL reflections except those flagged by the user for potential systematic errors. Weighted R-factors wR and all goodnesses of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The observed criterion of F2 > σ(F2) is used only for calculating -R-factor-obs 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 | ||
Mo1 | 0.81628 (2) | 0.10424 (1) | 0.25802 (2) | 0.0187 (1) | |
Br1 | 0.92515 (2) | 0.10449 (1) | 0.00633 (3) | 0.0275 (1) | |
Br2 | 0.75285 (3) | 0.09355 (1) | 0.52256 (2) | 0.0295 (1) | |
O1 | 1.02455 (16) | 0.10749 (5) | 0.35070 (18) | 0.0265 (5) | |
O2 | 0.85400 (15) | 0.04148 (4) | 0.25378 (16) | 0.0246 (4) | |
N1 | 0.8420 (2) | 0.16473 (5) | 0.26814 (19) | 0.0209 (5) | |
N2 | 0.77411 (19) | 0.20059 (5) | 0.2310 (2) | 0.0244 (5) | |
N3 | 0.64377 (18) | 0.10063 (5) | 0.17844 (19) | 0.0190 (5) | |
N4 | 0.51707 (18) | 0.09218 (5) | 0.11958 (19) | 0.0213 (5) | |
C1 | 0.6275 (2) | 0.20319 (6) | 0.2423 (2) | 0.0225 (6) | |
C2 | 0.5436 (2) | 0.22312 (7) | 0.1319 (3) | 0.0271 (7) | |
C3 | 0.4013 (3) | 0.22633 (7) | 0.1446 (3) | 0.0317 (7) | |
C4 | 0.3422 (3) | 0.20957 (8) | 0.2650 (3) | 0.0343 (8) | |
C5 | 0.4264 (3) | 0.19004 (8) | 0.3739 (3) | 0.0326 (8) | |
C6 | 0.5696 (3) | 0.18676 (7) | 0.3642 (3) | 0.0278 (7) | |
C7 | 0.8529 (2) | 0.23412 (7) | 0.1783 (3) | 0.0259 (7) | |
C8 | 0.8250 (3) | 0.27458 (7) | 0.2205 (3) | 0.0359 (8) | |
C9 | 0.9034 (3) | 0.30687 (8) | 0.1696 (4) | 0.0496 (10) | |
C10 | 1.0081 (3) | 0.29879 (9) | 0.0774 (4) | 0.0544 (10) | |
C11 | 1.0352 (3) | 0.25879 (10) | 0.0369 (3) | 0.0467 (10) | |
C12 | 0.9578 (2) | 0.22561 (8) | 0.0865 (3) | 0.0324 (8) | |
C13 | 0.4572 (2) | 0.11994 (6) | 0.0079 (2) | 0.0208 (6) | |
C14 | 0.3143 (2) | 0.12864 (7) | 0.0017 (2) | 0.0248 (6) | |
C15 | 0.2557 (2) | 0.15429 (7) | −0.1079 (3) | 0.0272 (7) | |
C16 | 0.3388 (2) | 0.17196 (7) | −0.2082 (3) | 0.0296 (7) | |
C17 | 0.4815 (2) | 0.16334 (8) | −0.2006 (3) | 0.0299 (7) | |
C18 | 0.5410 (2) | 0.13723 (7) | −0.0931 (2) | 0.0252 (7) | |
C19 | 0.4587 (2) | 0.05174 (6) | 0.1439 (2) | 0.0204 (6) | |
C20 | 0.5015 (2) | 0.03015 (7) | 0.2715 (2) | 0.0238 (6) | |
C21 | 0.4490 (2) | −0.00941 (7) | 0.2924 (2) | 0.0274 (7) | |
C22 | 0.3528 (2) | −0.02705 (7) | 0.1882 (2) | 0.0262 (7) | |
C23 | 0.3110 (2) | −0.00517 (7) | 0.0626 (2) | 0.0261 (7) | |
C24 | 0.3641 (2) | 0.03414 (7) | 0.0386 (2) | 0.0241 (6) | |
C25 | 1.2505 (3) | 0.09211 (8) | 0.4574 (3) | 0.0380 (8) | |
C26 | 1.1132 (2) | 0.07829 (7) | 0.3829 (2) | 0.0259 (7) | |
C27 | 1.0882 (2) | 0.03647 (7) | 0.3542 (3) | 0.0315 (7) | |
C28 | 0.9644 (2) | 0.01997 (7) | 0.2893 (2) | 0.0257 (7) | |
C29 | 0.9515 (3) | −0.02542 (7) | 0.2557 (3) | 0.0345 (8) | |
H1 | 0.928 (3) | 0.1690 (9) | 0.292 (3) | 0.039 (8)* | |
H2 | 0.58380 | 0.23430 | 0.04890 | 0.0320* | |
H3 | 0.34360 | 0.24010 | 0.07040 | 0.0380* | |
H4 | 0.24410 | 0.21150 | 0.27250 | 0.0410* | |
H5 | 0.38560 | 0.17870 | 0.45640 | 0.0390* | |
H6 | 0.62720 | 0.17350 | 0.43980 | 0.0330* | |
H8 | 0.75300 | 0.28000 | 0.28360 | 0.0430* | |
H9 | 0.88540 | 0.33460 | 0.19790 | 0.0590* | |
H10 | 1.06120 | 0.32110 | 0.04210 | 0.0650* | |
H11 | 1.10770 | 0.25360 | −0.02570 | 0.0560* | |
H12 | 0.97640 | 0.19790 | 0.05800 | 0.0390* | |
H14 | 0.25780 | 0.11710 | 0.07210 | 0.0300* | |
H15 | 0.15800 | 0.15980 | −0.11440 | 0.0330* | |
H16 | 0.29840 | 0.19000 | −0.28230 | 0.0360* | |
H17 | 0.53830 | 0.17550 | −0.26960 | 0.0360* | |
H18 | 0.63830 | 0.13120 | −0.08840 | 0.0300* | |
H20 | 0.56590 | 0.04230 | 0.34340 | 0.0290* | |
H21 | 0.47890 | −0.02460 | 0.37830 | 0.0330* | |
H22 | 0.31610 | −0.05400 | 0.20360 | 0.0310* | |
H23 | 0.24510 | −0.01710 | −0.00840 | 0.0310* | |
H24 | 0.33610 | 0.04890 | −0.04890 | 0.0290* | |
H25A | 1.29850 | 0.11010 | 0.39110 | 0.0570* | |
H25B | 1.30890 | 0.06780 | 0.48280 | 0.0570* | |
H25C | 1.23390 | 0.10750 | 0.54690 | 0.0570* | |
H27 | 1.16190 | 0.01760 | 0.38120 | 0.0380* | |
H29A | 0.85890 | −0.03530 | 0.27850 | 0.0520* | |
H29B | 1.02400 | −0.04070 | 0.31510 | 0.0520* | |
H29C | 0.96300 | −0.03000 | 0.15140 | 0.0520* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Mo1 | 0.0180 (1) | 0.0146 (1) | 0.0227 (1) | −0.0005 (1) | −0.0028 (1) | 0.0006 (1) |
Br1 | 0.0241 (1) | 0.0284 (1) | 0.0307 (1) | −0.0020 (1) | 0.0060 (1) | −0.0039 (1) |
Br2 | 0.0391 (1) | 0.0259 (1) | 0.0226 (1) | −0.0065 (1) | −0.0034 (1) | 0.0040 (1) |
O1 | 0.0217 (8) | 0.0211 (8) | 0.0353 (9) | 0.0005 (6) | −0.0063 (7) | −0.0004 (6) |
O2 | 0.0245 (8) | 0.0169 (7) | 0.0311 (8) | 0.0017 (6) | −0.0049 (6) | 0.0005 (6) |
N1 | 0.0207 (10) | 0.0171 (9) | 0.0244 (9) | 0.0010 (7) | −0.0014 (8) | 0.0006 (7) |
N2 | 0.0248 (9) | 0.0147 (9) | 0.0333 (10) | 0.0015 (7) | 0.0008 (8) | 0.0041 (8) |
N3 | 0.0206 (9) | 0.0154 (8) | 0.0208 (9) | −0.0014 (7) | 0.0010 (7) | 0.0008 (7) |
N4 | 0.0172 (9) | 0.0213 (9) | 0.0246 (9) | −0.0019 (7) | −0.0029 (7) | 0.0043 (7) |
C1 | 0.0234 (11) | 0.0165 (10) | 0.0274 (11) | 0.0024 (8) | 0.0018 (9) | −0.0032 (8) |
C2 | 0.0297 (12) | 0.0218 (11) | 0.0294 (12) | 0.0020 (9) | 0.0009 (10) | 0.0001 (9) |
C3 | 0.0312 (13) | 0.0257 (12) | 0.0372 (13) | 0.0056 (10) | −0.0034 (10) | −0.0043 (10) |
C4 | 0.0260 (12) | 0.0316 (13) | 0.0457 (15) | 0.0021 (10) | 0.0058 (11) | −0.0102 (11) |
C5 | 0.0375 (14) | 0.0292 (13) | 0.0327 (13) | −0.0021 (10) | 0.0125 (11) | −0.0045 (10) |
C6 | 0.0347 (13) | 0.0228 (11) | 0.0260 (11) | 0.0035 (9) | 0.0035 (10) | −0.0023 (9) |
C7 | 0.0244 (11) | 0.0207 (11) | 0.0307 (12) | −0.0045 (8) | −0.0088 (9) | 0.0070 (9) |
C8 | 0.0364 (14) | 0.0221 (12) | 0.0466 (15) | 0.0010 (10) | −0.0128 (11) | 0.0052 (11) |
C9 | 0.0506 (18) | 0.0220 (13) | 0.070 (2) | −0.0098 (12) | −0.0329 (16) | 0.0139 (13) |
C10 | 0.0444 (17) | 0.0439 (17) | 0.069 (2) | −0.0262 (14) | −0.0325 (16) | 0.0357 (15) |
C11 | 0.0277 (13) | 0.062 (2) | 0.0485 (16) | −0.0142 (13) | −0.0088 (12) | 0.0283 (15) |
C12 | 0.0289 (13) | 0.0319 (13) | 0.0351 (13) | −0.0045 (10) | −0.0045 (10) | 0.0088 (10) |
C13 | 0.0206 (10) | 0.0181 (10) | 0.0229 (10) | −0.0017 (8) | −0.0034 (8) | 0.0012 (8) |
C14 | 0.0219 (11) | 0.0251 (11) | 0.0275 (11) | −0.0014 (9) | 0.0023 (9) | 0.0023 (9) |
C15 | 0.0211 (11) | 0.0280 (12) | 0.0316 (12) | 0.0022 (9) | −0.0039 (9) | 0.0009 (10) |
C16 | 0.0324 (13) | 0.0286 (12) | 0.0265 (12) | 0.0010 (10) | −0.0062 (10) | 0.0067 (10) |
C17 | 0.0289 (12) | 0.0340 (13) | 0.0266 (11) | −0.0079 (10) | 0.0013 (10) | 0.0069 (10) |
C18 | 0.0204 (11) | 0.0282 (12) | 0.0266 (11) | −0.0024 (9) | −0.0014 (9) | 0.0014 (9) |
C19 | 0.0177 (10) | 0.0183 (10) | 0.0255 (11) | −0.0009 (8) | 0.0031 (8) | −0.0001 (8) |
C20 | 0.0236 (11) | 0.0249 (11) | 0.0225 (11) | −0.0035 (9) | −0.0003 (9) | 0.0009 (9) |
C21 | 0.0320 (12) | 0.0248 (12) | 0.0255 (11) | −0.0033 (9) | 0.0024 (9) | 0.0054 (9) |
C22 | 0.0307 (12) | 0.0194 (11) | 0.0291 (12) | −0.0052 (9) | 0.0070 (10) | −0.0011 (9) |
C23 | 0.0257 (11) | 0.0257 (12) | 0.0264 (11) | −0.0064 (9) | −0.0005 (9) | −0.0048 (9) |
C24 | 0.0251 (11) | 0.0252 (11) | 0.0216 (11) | −0.0016 (9) | −0.0006 (9) | 0.0015 (9) |
C25 | 0.0255 (13) | 0.0363 (14) | 0.0501 (16) | 0.0037 (10) | −0.0107 (11) | −0.0099 (12) |
C26 | 0.0206 (11) | 0.0294 (12) | 0.0273 (11) | 0.0038 (9) | −0.0001 (9) | −0.0007 (9) |
C27 | 0.0263 (12) | 0.0274 (12) | 0.0392 (14) | 0.0106 (10) | −0.0075 (10) | −0.0061 (10) |
C28 | 0.0311 (12) | 0.0209 (11) | 0.0246 (11) | 0.0038 (9) | −0.0005 (9) | −0.0001 (9) |
C29 | 0.0399 (14) | 0.0213 (12) | 0.0405 (14) | 0.0071 (10) | −0.0082 (11) | −0.0053 (10) |
Mo1—Br1 | 2.6023 (5) | C20—C21 | 1.388 (3) |
Mo1—Br2 | 2.5646 (4) | C21—C22 | 1.393 (3) |
Mo1—O1 | 2.1074 (16) | C22—C23 | 1.379 (3) |
Mo1—O2 | 2.0530 (13) | C23—C24 | 1.388 (3) |
Mo1—N1 | 1.9638 (16) | C25—C26 | 1.500 (3) |
Mo1—N3 | 1.7559 (18) | C26—C27 | 1.389 (3) |
O1—C26 | 1.285 (3) | C27—C28 | 1.389 (3) |
O2—C28 | 1.284 (2) | C28—C29 | 1.496 (3) |
N1—N2 | 1.355 (2) | C2—H2 | 0.9500 |
N2—C1 | 1.419 (3) | C3—H3 | 0.9500 |
N2—C7 | 1.423 (3) | C4—H4 | 0.9500 |
N3—N4 | 1.316 (2) | C5—H5 | 0.9500 |
N4—C13 | 1.441 (3) | C6—H6 | 0.9500 |
N4—C19 | 1.441 (3) | C8—H8 | 0.9500 |
N1—H1 | 0.85 (3) | C9—H9 | 0.9500 |
C1—C6 | 1.389 (3) | C10—H10 | 0.9500 |
C1—C2 | 1.395 (3) | C11—H11 | 0.9500 |
C2—C3 | 1.382 (3) | C12—H12 | 0.9500 |
C3—C4 | 1.387 (4) | C14—H14 | 0.9500 |
C4—C5 | 1.382 (4) | C15—H15 | 0.9500 |
C5—C6 | 1.386 (4) | C16—H16 | 0.9500 |
C7—C12 | 1.388 (3) | C17—H17 | 0.9500 |
C7—C8 | 1.390 (3) | C18—H18 | 0.9500 |
C8—C9 | 1.385 (4) | C20—H20 | 0.9500 |
C9—C10 | 1.386 (5) | C21—H21 | 0.9500 |
C10—C11 | 1.370 (4) | C22—H22 | 0.9500 |
C11—C12 | 1.397 (4) | C23—H23 | 0.9500 |
C13—C14 | 1.394 (3) | C24—H24 | 0.9500 |
C13—C18 | 1.388 (3) | C25—H25A | 0.9800 |
C14—C15 | 1.383 (3) | C25—H25B | 0.9800 |
C15—C16 | 1.384 (3) | C25—H25C | 0.9800 |
C16—C17 | 1.392 (3) | C27—H27 | 0.9500 |
C17—C18 | 1.381 (3) | C29—H29A | 0.9800 |
C19—C24 | 1.389 (3) | C29—H29B | 0.9800 |
C19—C20 | 1.392 (3) | C29—H29C | 0.9800 |
Br1—Mo1—Br2 | 167.70 (1) | O1—C26—C25 | 115.3 (2) |
Br1—Mo1—O1 | 85.51 (4) | O1—C26—C27 | 124.39 (18) |
Br1—Mo1—O2 | 84.42 (4) | C26—C27—C28 | 125.5 (2) |
Br1—Mo1—N1 | 88.90 (5) | C27—C28—C29 | 121.0 (2) |
Br1—Mo1—N3 | 93.70 (6) | O2—C28—C27 | 124.1 (2) |
Br2—Mo1—O1 | 85.17 (5) | O2—C28—C29 | 114.94 (19) |
Br2—Mo1—O2 | 86.63 (4) | C1—C2—H2 | 120.00 |
Br2—Mo1—N1 | 97.29 (5) | C3—C2—H2 | 120.00 |
Br2—Mo1—N3 | 95.49 (6) | C2—C3—H3 | 120.00 |
O1—Mo1—O2 | 83.91 (6) | C4—C3—H3 | 120.00 |
O1—Mo1—N1 | 79.66 (7) | C3—C4—H4 | 120.00 |
O1—Mo1—N3 | 178.77 (7) | C5—C4—H4 | 120.00 |
O2—Mo1—N1 | 162.71 (7) | C4—C5—H5 | 120.00 |
O2—Mo1—N3 | 95.07 (7) | C6—C5—H5 | 120.00 |
N1—Mo1—N3 | 101.28 (8) | C1—C6—H6 | 121.00 |
Mo1—O1—C26 | 130.03 (14) | C5—C6—H6 | 121.00 |
Mo1—O2—C28 | 131.95 (13) | C7—C8—H8 | 120.00 |
Mo1—N1—N2 | 140.98 (15) | C9—C8—H8 | 120.00 |
Mo1—N3—N4 | 171.87 (14) | C8—C9—H9 | 120.00 |
N1—N2—C1 | 119.35 (16) | C10—C9—H9 | 120.00 |
N1—N2—C7 | 118.28 (17) | C9—C10—H10 | 120.00 |
C1—N2—C7 | 122.35 (16) | C11—C10—H10 | 120.00 |
N3—N4—C13 | 117.61 (16) | C10—C11—H11 | 119.00 |
N3—N4—C19 | 118.70 (16) | C12—C11—H11 | 120.00 |
C13—N4—C19 | 122.14 (16) | C7—C12—H12 | 121.00 |
Mo1—N1—H1 | 107 (2) | C11—C12—H12 | 121.00 |
N2—N1—H1 | 111 (2) | C13—C14—H14 | 120.00 |
N2—C1—C2 | 119.38 (17) | C15—C14—H14 | 120.00 |
C2—C1—C6 | 120.8 (2) | C14—C15—H15 | 120.00 |
N2—C1—C6 | 119.83 (19) | C16—C15—H15 | 120.00 |
C1—C2—C3 | 119.3 (2) | C15—C16—H16 | 120.00 |
C2—C3—C4 | 120.4 (3) | C17—C16—H16 | 120.00 |
C3—C4—C5 | 119.8 (3) | C16—C17—H17 | 120.00 |
C4—C5—C6 | 120.8 (3) | C18—C17—H17 | 120.00 |
C1—C6—C5 | 118.9 (2) | C13—C18—H18 | 120.00 |
C8—C7—C12 | 121.2 (2) | C17—C18—H18 | 120.00 |
N2—C7—C12 | 119.0 (2) | C19—C20—H20 | 120.00 |
N2—C7—C8 | 119.8 (2) | C21—C20—H20 | 120.00 |
C7—C8—C9 | 119.2 (3) | C20—C21—H21 | 120.00 |
C8—C9—C10 | 120.2 (3) | C22—C21—H21 | 120.00 |
C9—C10—C11 | 120.2 (3) | C21—C22—H22 | 120.00 |
C10—C11—C12 | 120.9 (3) | C23—C22—H22 | 120.00 |
C7—C12—C11 | 118.4 (2) | C22—C23—H23 | 120.00 |
N4—C13—C14 | 119.16 (17) | C24—C23—H23 | 120.00 |
C14—C13—C18 | 120.74 (18) | C19—C24—H24 | 120.00 |
N4—C13—C18 | 120.10 (17) | C23—C24—H24 | 120.00 |
C13—C14—C15 | 119.33 (18) | C26—C25—H25A | 109.00 |
C14—C15—C16 | 120.26 (18) | C26—C25—H25B | 110.00 |
C15—C16—C17 | 120.0 (2) | C26—C25—H25C | 110.00 |
C16—C17—C18 | 120.3 (2) | H25A—C25—H25B | 109.00 |
C13—C18—C17 | 119.32 (18) | H25A—C25—H25C | 109.00 |
C20—C19—C24 | 120.65 (19) | H25B—C25—H25C | 109.00 |
N4—C19—C24 | 120.07 (17) | C26—C27—H27 | 117.00 |
N4—C19—C20 | 119.25 (17) | C28—C27—H27 | 117.00 |
C19—C20—C21 | 119.21 (18) | C28—C29—H29A | 110.00 |
C20—C21—C22 | 120.48 (18) | C28—C29—H29B | 109.00 |
C21—C22—C23 | 119.6 (2) | C28—C29—H29C | 109.00 |
C22—C23—C24 | 120.77 (18) | H29A—C29—H29B | 109.00 |
C19—C24—C23 | 119.29 (18) | H29A—C29—H29C | 109.00 |
C25—C26—C27 | 120.34 (19) | H29B—C29—H29C | 110.00 |
Br1—Mo1—O1—C26 | −86.31 (17) | C6—C1—C2—C3 | −0.2 (3) |
Br2—Mo1—O1—C26 | 85.66 (17) | N2—C1—C2—C3 | −178.7 (2) |
O2—Mo1—O1—C26 | −1.46 (17) | C2—C1—C6—C5 | 0.7 (3) |
N1—Mo1—O1—C26 | −176.01 (18) | C1—C2—C3—C4 | −0.6 (4) |
Br1—Mo1—O2—C28 | 83.01 (17) | C2—C3—C4—C5 | 0.9 (4) |
Br2—Mo1—O2—C28 | −88.54 (17) | C3—C4—C5—C6 | −0.3 (4) |
O1—Mo1—O2—C28 | −3.05 (17) | C4—C5—C6—C1 | −0.5 (4) |
N3—Mo1—O2—C28 | 176.24 (17) | N2—C7—C12—C11 | −179.3 (2) |
Br1—Mo1—N1—N2 | 90.8 (2) | N2—C7—C8—C9 | 179.4 (3) |
Br2—Mo1—N1—N2 | −99.9 (2) | C8—C7—C12—C11 | −0.1 (4) |
O1—Mo1—N1—N2 | 176.5 (2) | C12—C7—C8—C9 | 0.1 (4) |
N3—Mo1—N1—N2 | −2.7 (2) | C7—C8—C9—C10 | 0.2 (5) |
Mo1—O1—C26—C25 | −176.12 (15) | C8—C9—C10—C11 | −0.4 (5) |
Mo1—O1—C26—C27 | 3.4 (3) | C9—C10—C11—C12 | 0.5 (5) |
Mo1—O2—C28—C27 | 5.7 (3) | C10—C11—C12—C7 | −0.2 (4) |
Mo1—O2—C28—C29 | −174.32 (15) | C18—C13—C14—C15 | 1.0 (3) |
Mo1—N1—N2—C1 | 36.7 (3) | N4—C13—C14—C15 | −178.12 (19) |
Mo1—N1—N2—C7 | −141.8 (2) | C14—C13—C18—C17 | 0.0 (3) |
C7—N2—C1—C6 | −138.8 (2) | N4—C13—C18—C17 | 179.2 (2) |
N1—N2—C7—C8 | −140.8 (2) | C13—C14—C15—C16 | −1.6 (3) |
N1—N2—C1—C2 | −138.6 (2) | C14—C15—C16—C17 | 1.2 (4) |
N1—N2—C7—C12 | 38.5 (3) | C15—C16—C17—C18 | −0.1 (4) |
C7—N2—C1—C2 | 39.8 (3) | C16—C17—C18—C13 | −0.5 (4) |
C1—N2—C7—C8 | 40.8 (3) | C20—C19—C24—C23 | 0.8 (3) |
N1—N2—C1—C6 | 42.8 (3) | C24—C19—C20—C21 | 0.3 (3) |
C1—N2—C7—C12 | −139.9 (2) | N4—C19—C24—C23 | 178.77 (18) |
N3—N4—C13—C18 | 37.7 (3) | N4—C19—C20—C21 | −177.72 (18) |
C13—N4—C19—C20 | −166.35 (18) | C19—C20—C21—C22 | −1.1 (3) |
N3—N4—C19—C24 | −149.82 (19) | C20—C21—C22—C23 | 0.8 (3) |
N3—N4—C19—C20 | 28.2 (3) | C21—C22—C23—C24 | 0.3 (3) |
C13—N4—C19—C24 | 15.6 (3) | C22—C23—C24—C19 | −1.1 (3) |
C19—N4—C13—C14 | 51.2 (3) | O1—C26—C27—C28 | −1.1 (4) |
N3—N4—C13—C14 | −143.23 (19) | C25—C26—C27—C28 | 178.4 (2) |
C19—N4—C13—C18 | −128.0 (2) | C26—C27—C28—C29 | 176.5 (2) |
N2—C1—C6—C5 | 179.3 (2) | C26—C27—C28—O2 | −3.5 (4) |
D—H···A | D—H | H···A | D···A | D—H···A |
C6—H6···Br2 | 0.95 | 2.92 | 3.712 (3) | 142 |
C20—H20···Br2 | 0.95 | 2.85 | 3.788 (2) | 168 |
C23—H23···O2i | 0.95 | 2.49 | 3.392 (2) | 158 |
Symmetry code: (i) −x+1, −y, −z. |
Experimental details
Crystal data | |
Chemical formula | [MoBr2(C12H11N2)(C12H10N2)(C5H7O2)] |
Mr | 720.29 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 150 |
a, b, c (Å) | 9.5828 (11), 32.187 (4), 9.1455 (10) |
β (°) | 94.601 (2) |
V (Å3) | 2811.8 (6) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 3.34 |
Crystal size (mm) | 0.36 × 0.31 × 0.29 |
Data collection | |
Diffractometer | Bruker D8 Discover with SMART CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2000) |
Tmin, Tmax | 0.324, 0.379 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 22331, 5678, 5133 |
Rint | 0.021 |
(sin θ/λ)max (Å−1) | 0.624 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.024, 0.063, 1.05 |
No. of reflections | 5678 |
No. of parameters | 349 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.68, −0.29 |
Computer programs: SMART (Bruker, 2001), SAINT (Bruker, 2000), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008), PLATON (Spek, 2009) and Mercury (Macrae et al., 2006).
Mo1—Br1 | 2.6023 (5) | Mo1—O2 | 2.0530 (13) |
Mo1—Br2 | 2.5646 (4) | Mo1—N1 | 1.9638 (16) |
Mo1—O1 | 2.1074 (16) | Mo1—N3 | 1.7559 (18) |
D—H···A | D—H | H···A | D···A | D—H···A |
C6—H6···Br2 | 0.95 | 2.92 | 3.712 (3) | 142 |
C20—H20···Br2 | 0.95 | 2.85 | 3.788 (2) | 168 |
C23—H23···O2i | 0.95 | 2.49 | 3.392 (2) | 158 |
Symmetry code: (i) −x+1, −y, −z. |
Acknowledgements
The authors thank the FONDECYT (grant Nos. 11100446 and 1080269) and the Universidad Andrés Bello (grant No. DI-06-10-R).
References
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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.
In a previous paper, it was published a series of molybdenum complexes containing both end-on organohydrazide(1-) and organohydrazide(2-) ligands (Bustos et al., 1994), formulated as [Mo(NHNRPh)(NNRPh)(acac)X2] (R= Me, Ph; X = Cl, Br, I). These compounds are of remarkable importance as potential models of intermediates in the conversion of coordinated dinitrogen into ammonia (McCleverty, 1987; Henderson et al., 1983). Here, the crystalline and molecular structure of [Mo(NHNPh2)(NNPh2)(acac)Br2] is reported.
The molecular structure of the title compound, (I), is shown in Fig. 1. This compound which crystallizes in space group P21/c, is equivalent in topology to [Mo(NHNPh2)(NNPh2)(acac)Cl2] (Bustos et al., 1994), (code HEDCIC), where the bromine atoms are replaced by chlorine atoms.
The coordination geometry about the MoVI atom can be described as a distorted octahedron (Table 1). The bromine ligands occupy two trans-axial sites while the equatorial positions are occupied by two cis-hydrazide ligands and the oxygen atoms of the acetylacetonate ligand. The two hydrazide ligands are different due to the location of the hydrogen atom attached to the N1 atom. In effect the Mo1, N3 and N4 atoms are almost linear [171.87 (14)°] while the Mo1—N1—N2 angle is 140.98 (15)°. In (I), there are two weak intramolecular C—H···Br hydrogen bonds (Table 2) and one intramolecular π–π stacking interaction involving the C1—C6 and C13—C18 rings, with a distance of 3.8118 (15) Å between ring centroids (Fig. 2).
In the crystal structure, two weak hydrogen bonds C23—H23···O2i and C23i—H23i..O2 (Table 2) link the molecules into dimers. In addition these dimers are further stabilized by a π–π stacking interaction with distance Cg···Cgi of 3.7401 (12) Å, where Cg is the centroids of the C19–C24 ring (Fig. 2). [symmetry code: (i) 1 - x, -y, -z]. The entire three-dimensional network is constructed mainly by weak C—H···Br interactions (Bustos et al., 2006).