metal-organic compounds
Methanol{2-methoxy-6-[(2-oxidopropyl)iminomethyl]phenolato}dioxidomolybdenum(VI)
aChemistry Department, Shahid Bahonar University, Kerman, Iran, and bInstitute of Physics, University of Neuchαtel, Rue Emile-Argand 11, CH-2009 Neuchâtel, Switzerland
*Correspondence e-mail: i_shoaie@yahoo.com
In the structure of the title compound, [Mo(C11H13NO3)O2(CH3OH)], the MoVI ion is octahedrally coordinated by two oxide O atoms, the N atom and two deprotonated OH groups of the tridentate Schiff base ligand 2-methoxy-6-[(2-oxidopropyl)iminomethyl]phenolate and by a methanol O atom. In the two complexes are linked via O—H⋯O hydrogen bonds, yielding a centrosymmetric arrangement involving the methanol hydroxy group and one of the ligand O atoms coordinated to the MoVI ion.
Related literature
For molybdenum (VI) Schiff base complexes in bioinorganic chemistry, see: Holm et al. (1996) and as oxidation catalysts, see: Arnaiz et al. (2000); Sheikhshoaie et al. (2009). For similar structures, see: Abbasi et al. (2008); Monadi et al. (2009); Syamal & Maurya (1989).
Experimental
Crystal data
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Refinement
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Data collection: EXPOSE in IPDS-I (Stoe & Cie, 2000); cell CELL in IPDS-I; data reduction: INTEGRATE in IPDS-I; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009) and Mercury (Macrae et al., 2006); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536809047485/fi2093sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809047485/fi2093Isup2.hkl
The title compound was prepared by adding MoO2(acac)2 (0.327 g) to a dry methanolic solution (30 ml) of 2-[(2-hydroxy-propylimino)-methyl]-phenol (0.209 g); a 1:1 equimolar ratio. The mixture was then refluxed for 5 h. On cooling a yellow crystalline powder formed, which were filtered off. Crystals of the title complex, suitable for X-ray analysis, were obtained as yellow blocks by slow evaporation at room temperature of a solution in methanol.
The OH H-atom was located in a difference electron-density map and refined with a distance restraint of 0.84 (2) Å and Uiso(H) = 1.5Ueq(parent O-atom). The remaining H atoms could all be located from difference electron-density maps but were included in calculated positions and treated as riding atoms: C—H = 0.95 - 1.00 Å, with Uiso(H) = k × Ueq(parent C-atom), where k = 1.2 for CH and CH2 H-atoms, and 1.5 for CH3 H-atoms.
Data collection: EXPOSE in IPDS-I (Stoe & Cie, 2000); cell
CELL in IPDS-I (Stoe & Cie, 2000); data reduction: INTEGRATE in IPDS-I (Stoe & Cie, 2000); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009) and Mercury (Macrae et al., 2006); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).[Mo(C11H13NO3)O2(CH4O)] | F(000) = 744 |
Mr = 367.21 | Dx = 1.756 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 8000 reflections |
a = 6.7551 (5) Å | θ = 2.0–26.1° |
b = 15.8357 (14) Å | µ = 0.97 mm−1 |
c = 13.1198 (10) Å | T = 173 K |
β = 98.287 (9)° | Block, yellow |
V = 1388.79 (19) Å3 | 0.38 × 0.38 × 0.34 mm |
Z = 4 |
Stoe IPDS diffractometer | 2666 independent reflections |
Radiation source: fine-focus sealed tube | 2601 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.035 |
ϕ rotation scans | θmax = 25.9°, θmin = 2.6° |
Absorption correction: multi-scan (MULscanABS in PLATON; Spek, 2009) | h = −7→8 |
Tmin = 0.625, Tmax = 0.716 | k = −19→19 |
10555 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)] = 0.024 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.063 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.16 | w = 1/[σ2(Fo2) + (0.0288P)2 + 1.2212P] where P = (Fo2 + 2Fc2)/3 |
2666 reflections | (Δ/σ)max < 0.001 |
187 parameters | Δρmax = 0.41 e Å−3 |
1 restraint | Δρmin = −0.60 e Å−3 |
[Mo(C11H13NO3)O2(CH4O)] | V = 1388.79 (19) Å3 |
Mr = 367.21 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 6.7551 (5) Å | µ = 0.97 mm−1 |
b = 15.8357 (14) Å | T = 173 K |
c = 13.1198 (10) Å | 0.38 × 0.38 × 0.34 mm |
β = 98.287 (9)° |
Stoe IPDS diffractometer | 2666 independent reflections |
Absorption correction: multi-scan (MULscanABS in PLATON; Spek, 2009) | 2601 reflections with I > 2σ(I) |
Tmin = 0.625, Tmax = 0.716 | Rint = 0.035 |
10555 measured reflections |
R[F2 > 2σ(F2)] = 0.024 | 1 restraint |
wR(F2) = 0.063 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.16 | Δρmax = 0.41 e Å−3 |
2666 reflections | Δρmin = −0.60 e Å−3 |
187 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. The OH H-atom was located in a difference electron-density map and refined with a distance constraint of 0.84 (2) Å and Uiso(H) = 1.5Ueq(parent O-atom). The remainder of the H-atoms could all be located from difference electron-density maps but were included in calculated positions and treated as riding atoms: C—H = 0.95 - 1.00 Å, with Uiso(H) = k × Ueq(parent C-atom), where k = 1.2 for CH and CH2 H-atoms, and 1.5 for methyl H-atoms. Using the Stoe IPDS1, one-circle image plate diffraction system, it is often only possible to access 94% maximum of the Ewald sphere depending on the crystal system and the position of the crystal. Here however, 98% of the data were accessible out to 25° in θ. |
x | y | z | Uiso*/Ueq | ||
Mo1 | 0.03631 (2) | 0.11249 (1) | 0.15344 (1) | 0.0156 (1) | |
O1 | 0.0326 (2) | 0.12028 (9) | 0.00507 (12) | 0.0197 (4) | |
O2 | 0.1700 (2) | 0.08957 (10) | 0.29193 (11) | 0.0210 (4) | |
O3 | 0.1839 (2) | 0.06916 (11) | 0.48988 (12) | 0.0289 (5) | |
O4 | −0.0341 (2) | 0.21363 (10) | 0.17290 (12) | 0.0236 (4) | |
O5 | −0.1751 (2) | 0.05346 (10) | 0.15022 (12) | 0.0228 (4) | |
O6 | 0.1883 (2) | −0.01628 (10) | 0.12101 (12) | 0.0238 (5) | |
N1 | 0.3526 (3) | 0.14577 (12) | 0.13382 (14) | 0.0202 (5) | |
C1 | 0.1774 (3) | 0.17293 (15) | −0.03365 (18) | 0.0261 (6) | |
C2 | 0.3783 (3) | 0.14935 (16) | 0.02534 (17) | 0.0270 (7) | |
C3 | 0.5000 (3) | 0.16301 (13) | 0.20319 (17) | 0.0203 (6) | |
C4 | 0.4983 (3) | 0.15205 (13) | 0.31189 (17) | 0.0200 (6) | |
C5 | 0.6718 (3) | 0.17449 (15) | 0.37898 (19) | 0.0263 (7) | |
C6 | 0.6822 (3) | 0.16196 (17) | 0.48262 (19) | 0.0319 (7) | |
C7 | 0.5213 (4) | 0.12683 (16) | 0.52236 (19) | 0.0294 (7) | |
C8 | 0.3482 (3) | 0.10346 (14) | 0.45824 (18) | 0.0223 (6) | |
C9 | 0.3363 (3) | 0.11557 (12) | 0.35135 (17) | 0.0189 (6) | |
C10 | 0.1682 (4) | 0.16163 (15) | −0.14788 (18) | 0.0272 (7) | |
C11 | 0.1874 (4) | 0.05673 (19) | 0.59784 (18) | 0.0359 (8) | |
C12 | 0.3293 (4) | −0.06281 (18) | 0.1874 (2) | 0.0387 (8) | |
H1 | 0.14830 | 0.23330 | −0.01900 | 0.0310* | |
H2A | 0.42220 | 0.09380 | 0.00210 | 0.0320* | |
H2B | 0.48010 | 0.19220 | 0.01460 | 0.0320* | |
H3 | 0.61850 | 0.18450 | 0.18150 | 0.0240* | |
H5 | 0.78240 | 0.19850 | 0.35210 | 0.0320* | |
H6 | 0.79980 | 0.17730 | 0.52760 | 0.0380* | |
H6O | 0.117 (4) | −0.0505 (16) | 0.084 (2) | 0.0360* | |
H7 | 0.52970 | 0.11860 | 0.59460 | 0.0350* | |
H10A | 0.03800 | 0.18110 | −0.18270 | 0.0410* | |
H10B | 0.18550 | 0.10180 | −0.16340 | 0.0410* | |
H10C | 0.27490 | 0.19470 | −0.17210 | 0.0410* | |
H11A | 0.20460 | 0.11130 | 0.63330 | 0.0540* | |
H11B | 0.29890 | 0.01940 | 0.62400 | 0.0540* | |
H11C | 0.06120 | 0.03100 | 0.61040 | 0.0540* | |
H12A | 0.27690 | −0.07390 | 0.25200 | 0.0580* | |
H12B | 0.45390 | −0.03050 | 0.20190 | 0.0580* | |
H12C | 0.35560 | −0.11650 | 0.15480 | 0.0580* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Mo1 | 0.0105 (1) | 0.0213 (1) | 0.0142 (1) | −0.0008 (1) | −0.0009 (1) | −0.0025 (1) |
O1 | 0.0183 (7) | 0.0248 (8) | 0.0153 (7) | −0.0021 (6) | −0.0003 (6) | −0.0011 (6) |
O2 | 0.0145 (7) | 0.0326 (8) | 0.0149 (7) | −0.0038 (6) | −0.0017 (6) | −0.0012 (6) |
O3 | 0.0265 (8) | 0.0427 (10) | 0.0162 (8) | −0.0051 (7) | −0.0015 (6) | 0.0021 (7) |
O4 | 0.0205 (7) | 0.0258 (8) | 0.0236 (8) | −0.0017 (6) | 0.0005 (6) | −0.0059 (6) |
O5 | 0.0163 (7) | 0.0257 (8) | 0.0254 (8) | −0.0022 (6) | −0.0007 (6) | −0.0022 (6) |
O6 | 0.0233 (8) | 0.0236 (8) | 0.0215 (8) | 0.0028 (6) | −0.0067 (6) | −0.0039 (6) |
N1 | 0.0142 (8) | 0.0271 (10) | 0.0193 (9) | −0.0012 (7) | 0.0022 (7) | 0.0005 (7) |
C1 | 0.0287 (11) | 0.0255 (11) | 0.0239 (11) | −0.0032 (9) | 0.0031 (9) | 0.0022 (9) |
C2 | 0.0212 (10) | 0.0398 (13) | 0.0206 (11) | −0.0048 (10) | 0.0056 (9) | 0.0007 (10) |
C3 | 0.0120 (9) | 0.0218 (10) | 0.0271 (11) | 0.0007 (8) | 0.0027 (8) | −0.0034 (9) |
C4 | 0.0142 (9) | 0.0210 (10) | 0.0237 (11) | 0.0027 (8) | −0.0011 (8) | −0.0055 (8) |
C5 | 0.0146 (10) | 0.0322 (12) | 0.0305 (12) | −0.0005 (9) | −0.0025 (9) | −0.0084 (10) |
C6 | 0.0202 (10) | 0.0413 (14) | 0.0300 (13) | −0.0010 (10) | −0.0103 (9) | −0.0085 (11) |
C7 | 0.0282 (12) | 0.0373 (13) | 0.0193 (11) | 0.0023 (10) | −0.0076 (10) | −0.0032 (10) |
C8 | 0.0212 (11) | 0.0253 (11) | 0.0190 (11) | 0.0021 (8) | −0.0020 (9) | −0.0024 (8) |
C9 | 0.0152 (10) | 0.0201 (10) | 0.0196 (11) | 0.0035 (7) | −0.0039 (8) | −0.0051 (8) |
C10 | 0.0303 (12) | 0.0283 (11) | 0.0228 (12) | −0.0026 (9) | 0.0036 (9) | 0.0054 (9) |
C11 | 0.0410 (14) | 0.0494 (16) | 0.0166 (11) | −0.0071 (12) | 0.0017 (10) | 0.0023 (11) |
C12 | 0.0356 (13) | 0.0363 (14) | 0.0382 (15) | 0.0152 (11) | −0.0147 (11) | −0.0059 (11) |
Mo1—O1 | 1.9471 (16) | C6—C7 | 1.388 (3) |
Mo1—O2 | 1.9431 (14) | C7—C8 | 1.389 (3) |
Mo1—O4 | 1.7005 (16) | C8—C9 | 1.406 (3) |
Mo1—O5 | 1.7022 (15) | C1—H1 | 1.0000 |
Mo1—O6 | 2.3493 (16) | C2—H2A | 0.9900 |
Mo1—N1 | 2.251 (2) | C2—H2B | 0.9900 |
O1—C1 | 1.433 (3) | C3—H3 | 0.9500 |
O2—C9 | 1.337 (3) | C5—H5 | 0.9500 |
O3—C8 | 1.354 (3) | C6—H6 | 0.9500 |
O3—C11 | 1.427 (3) | C7—H7 | 0.9500 |
O6—C12 | 1.403 (3) | C10—H10A | 0.9800 |
O6—H6O | 0.83 (3) | C10—H10B | 0.9800 |
N1—C2 | 1.460 (3) | C10—H10C | 0.9800 |
N1—C3 | 1.278 (3) | C11—H11A | 0.9800 |
C1—C2 | 1.509 (3) | C11—H11B | 0.9800 |
C1—C10 | 1.502 (3) | C11—H11C | 0.9800 |
C3—C4 | 1.438 (3) | C12—H12A | 0.9800 |
C4—C9 | 1.401 (3) | C12—H12B | 0.9800 |
C4—C5 | 1.406 (3) | C12—H12C | 0.9800 |
C5—C6 | 1.366 (3) | ||
O1—Mo1—O2 | 152.13 (6) | C4—C9—C8 | 119.30 (19) |
O1—Mo1—O4 | 97.29 (7) | O2—C9—C4 | 123.2 (2) |
O1—Mo1—O5 | 96.90 (7) | O2—C9—C8 | 117.52 (18) |
O1—Mo1—O6 | 79.45 (6) | O1—C1—H1 | 109.00 |
O1—Mo1—N1 | 75.32 (6) | C2—C1—H1 | 109.00 |
O2—Mo1—O4 | 97.93 (7) | C10—C1—H1 | 109.00 |
O2—Mo1—O5 | 101.30 (7) | N1—C2—H2A | 110.00 |
O2—Mo1—O6 | 81.43 (6) | N1—C2—H2B | 110.00 |
O2—Mo1—N1 | 80.20 (6) | C1—C2—H2A | 110.00 |
O4—Mo1—O5 | 105.61 (7) | C1—C2—H2B | 110.00 |
O4—Mo1—O6 | 169.64 (6) | H2A—C2—H2B | 109.00 |
O4—Mo1—N1 | 95.01 (7) | N1—C3—H3 | 118.00 |
O5—Mo1—O6 | 84.60 (6) | C4—C3—H3 | 118.00 |
O5—Mo1—N1 | 158.82 (7) | C4—C5—H5 | 120.00 |
O6—Mo1—N1 | 74.68 (6) | C6—C5—H5 | 120.00 |
Mo1—O1—C1 | 118.70 (13) | C5—C6—H6 | 120.00 |
Mo1—O2—C9 | 136.56 (13) | C7—C6—H6 | 120.00 |
C8—O3—C11 | 117.57 (18) | C6—C7—H7 | 119.00 |
Mo1—O6—C12 | 128.21 (14) | C8—C7—H7 | 119.00 |
C12—O6—H6O | 107.7 (18) | C1—C10—H10A | 109.00 |
Mo1—O6—H6O | 116.1 (19) | C1—C10—H10B | 109.00 |
Mo1—N1—C3 | 128.57 (15) | C1—C10—H10C | 109.00 |
Mo1—N1—C2 | 111.65 (13) | H10A—C10—H10B | 109.00 |
C2—N1—C3 | 119.75 (19) | H10A—C10—H10C | 109.00 |
O1—C1—C10 | 110.63 (19) | H10B—C10—H10C | 110.00 |
O1—C1—C2 | 106.47 (18) | O3—C11—H11A | 109.00 |
C2—C1—C10 | 112.78 (19) | O3—C11—H11B | 109.00 |
N1—C2—C1 | 106.57 (17) | O3—C11—H11C | 110.00 |
N1—C3—C4 | 124.3 (2) | H11A—C11—H11B | 109.00 |
C3—C4—C9 | 122.31 (19) | H11A—C11—H11C | 109.00 |
C3—C4—C5 | 117.72 (19) | H11B—C11—H11C | 109.00 |
C5—C4—C9 | 119.9 (2) | O6—C12—H12A | 109.00 |
C4—C5—C6 | 120.3 (2) | O6—C12—H12B | 109.00 |
C5—C6—C7 | 120.1 (2) | O6—C12—H12C | 110.00 |
C6—C7—C8 | 121.1 (2) | H12A—C12—H12B | 109.00 |
O3—C8—C9 | 115.41 (19) | H12A—C12—H12C | 109.00 |
C7—C8—C9 | 119.3 (2) | H12B—C12—H12C | 109.00 |
O3—C8—C7 | 125.3 (2) | ||
O2—Mo1—O1—C1 | −55.3 (2) | Mo1—O2—C9—C4 | −21.0 (3) |
O4—Mo1—O1—C1 | 67.30 (14) | Mo1—O2—C9—C8 | 160.43 (15) |
O5—Mo1—O1—C1 | 174.09 (14) | C11—O3—C8—C7 | 0.7 (3) |
O6—Mo1—O1—C1 | −102.75 (14) | C11—O3—C8—C9 | −179.1 (2) |
N1—Mo1—O1—C1 | −25.99 (14) | Mo1—N1—C2—C1 | 28.0 (2) |
O1—Mo1—O2—C9 | 53.8 (3) | C3—N1—C2—C1 | −150.1 (2) |
O4—Mo1—O2—C9 | −68.64 (19) | Mo1—N1—C3—C4 | 9.8 (3) |
O5—Mo1—O2—C9 | −176.39 (19) | C2—N1—C3—C4 | −172.5 (2) |
O6—Mo1—O2—C9 | 100.92 (19) | O1—C1—C2—N1 | −46.5 (2) |
N1—Mo1—O2—C9 | 25.11 (19) | C10—C1—C2—N1 | −168.03 (19) |
O1—Mo1—O6—C12 | 151.18 (18) | N1—C3—C4—C5 | −179.5 (2) |
O2—Mo1—O6—C12 | −8.45 (18) | N1—C3—C4—C9 | 4.4 (3) |
O5—Mo1—O6—C12 | −110.76 (18) | C3—C4—C5—C6 | −177.1 (2) |
N1—Mo1—O6—C12 | 73.67 (18) | C9—C4—C5—C6 | −0.9 (3) |
O1—Mo1—N1—C2 | −3.26 (14) | C3—C4—C9—O2 | −1.2 (3) |
O1—Mo1—N1—C3 | 174.7 (2) | C3—C4—C9—C8 | 177.28 (19) |
O2—Mo1—N1—C2 | 163.30 (16) | C5—C4—C9—O2 | −177.24 (19) |
O2—Mo1—N1—C3 | −18.79 (19) | C5—C4—C9—C8 | 1.3 (3) |
O4—Mo1—N1—C2 | −99.50 (15) | C4—C5—C6—C7 | 0.1 (4) |
O4—Mo1—N1—C3 | 78.4 (2) | C5—C6—C7—C8 | 0.3 (4) |
O5—Mo1—N1—C2 | 67.3 (3) | C6—C7—C8—O3 | −179.7 (2) |
O5—Mo1—N1—C3 | −114.8 (2) | C6—C7—C8—C9 | 0.1 (4) |
O6—Mo1—N1—C2 | 79.59 (15) | O3—C8—C9—O2 | −2.5 (3) |
O6—Mo1—N1—C3 | −102.5 (2) | O3—C8—C9—C4 | 178.94 (19) |
Mo1—O1—C1—C2 | 49.6 (2) | C7—C8—C9—O2 | 177.7 (2) |
Mo1—O1—C1—C10 | 172.42 (14) | C7—C8—C9—C4 | −0.9 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
O6—H6O···O1i | 0.83 (3) | 1.81 (3) | 2.639 (2) | 176 (2) |
C3—H3···O4ii | 0.95 | 2.41 | 3.327 (2) | 162 |
C3—H3···O5ii | 0.95 | 2.57 | 2.958 (3) | 105 |
C10—H10A···O4iii | 0.98 | 2.52 | 3.221 (3) | 128 |
C10—H10B···O5i | 0.98 | 2.47 | 3.407 (3) | 161 |
C11—H11C···O3iv | 0.98 | 2.52 | 3.280 (3) | 134 |
Symmetry codes: (i) −x, −y, −z; (ii) x+1, y, z; (iii) x, −y+1/2, z−1/2; (iv) −x, −y, −z+1. |
Experimental details
Crystal data | |
Chemical formula | [Mo(C11H13NO3)O2(CH4O)] |
Mr | 367.21 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 173 |
a, b, c (Å) | 6.7551 (5), 15.8357 (14), 13.1198 (10) |
β (°) | 98.287 (9) |
V (Å3) | 1388.79 (19) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.97 |
Crystal size (mm) | 0.38 × 0.38 × 0.34 |
Data collection | |
Diffractometer | Stoe IPDS diffractometer |
Absorption correction | Multi-scan (MULscanABS in PLATON; Spek, 2009) |
Tmin, Tmax | 0.625, 0.716 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 10555, 2666, 2601 |
Rint | 0.035 |
(sin θ/λ)max (Å−1) | 0.615 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.024, 0.063, 1.16 |
No. of reflections | 2666 |
No. of parameters | 187 |
No. of restraints | 1 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.41, −0.60 |
Computer programs: EXPOSE in IPDS-I (Stoe & Cie, 2000), CELL in IPDS-I (Stoe & Cie, 2000), INTEGRATE in IPDS-I (Stoe & Cie, 2000), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), PLATON (Spek, 2009) and Mercury (Macrae et al., 2006).
D—H···A | D—H | H···A | D···A | D—H···A |
O6—H6O···O1i | 0.83 (3) | 1.81 (3) | 2.639 (2) | 176 (2) |
Symmetry code: (i) −x, −y, −z. |
References
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Various molybdenum(VI) Schiff base complexes have been studied due to their importance in the domains of bioinorganic chemistry (Holm et al., (1996), analytical chemistry, oxidation catalyst (Arnaiz et al., 2000; Sheikhshoaie et al., 2009) and structural chemistry (Abbasi et al., 2008; Monadi et al., 2009; Syamal & Maurya, 1989). In continuation of our interest in this line of research we have prepared the title compound, synthesized by the reaction of MoO2(acac)2 and the Schiff base ligand 2-[(2-hydroxy-propylimino)-methyl]-phenol in methanol.
The molecular structure of the title compound is illustrated in Fig. 1 and geometrical parameters are available in the supplementary material as well as in the deposited CIF. The molybdenum atom, Mo1, has a distorted octahedral coordination, being coordinated by the N and two O-atoms of the tridentate Schiff base ligand (N1, O1 and O2), two oxido O-atoms (O4 and O5), and by the O-atom (O6) of the coordinating methanol molecule. The Mo—O and Mo—N bond distances are similar to those reported for the molybdenum (VI) Schiff base complex, {1,1'-[(2,2-Dimethylpropane-1,3-diyl)bis(nitrilomethylidyne)] di-2-naphtholato}dioxidomolybdenum(VI) dichloromethane 1.75-solvate, (Monadi et al., 2009).
In the crystal, complexes are linked via hydrogen bonds, O6—H6O···O1i [symmetry operation (i) = -x, -y, -z], involving the methanol hydroxy group and a ligand O-atom coordinating to the second Mo atom so forming centrosymmetric dimers (Table 1 and Fig. 2).