Abstract
Two new oxovanadium(V) complexes [VOL1(HQ)] (1) and [VOL2(HQ)] (2) are prepared by the reaction of [VO(acac)2] (where acac = acetylacetonate), 8-hydroxyquinoline (HHQ) with 4-bromo-N′- (3-ethoxy-2-hydroxybenzylidene)benzohydrazide (H2L1) and 2-bromo-N′-(3-ethoxy-2- hydroxybenzylidene)benzohydrazide (H2L2), respectively, in methanol. Crystal and molecular structures of the complexes are determined by elemental analysis, infrared spectroscopy, and single crystal X-ray diffraction. Complex 1 crystallizes in the monoclinic space group P21/c, with unit cell dimensions a = 12.5236(13) Å, b = 22.5260(15) Å, c = 16.7029(13) Å, β = 90.054(2)°, V = 4712.0(7) Å3, Z = 8, GOOF = 1.024, R 1 = 0.0586 and wR 2 = 0.0835. Complex 2 crystallizes in the triclinic space group P-1, with unit cell dimensions a = 7.4344(12) Å, b = 10.8677(16) Å, c = 14.687(2) Å, α = 85.327(5)°, β = 77.357(5)°, γ = 84.896(5)°,V = 1150.9(3) Å3, Z = 2, GOOF = 1.153, R 1 = 0.0917 and wR 2 = 0.3014. The V atoms are in the octahedral coordination. Thermal stability of the complexes is also studied.
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Original Russian Text © 2015 G.-H. Sheng, X.-S. Cheng, Z.-L. You, H.-L. Zhu.
The text was submitted by the authors in English. Zhurnal Strukturnoi Khimii, Vol. 56, No. 5, pp. 1001–1005, September–October, 2015.
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Sheng, G.H., Cheng, X.S., You, Z.L. et al. Two isomeric structures of oxovanadium(V) complexes with hydrazone and 8-hydroxyquinoline ligands. J Struct Chem 56, 942–947 (2015). https://doi.org/10.1134/S0022476615050170
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DOI: https://doi.org/10.1134/S0022476615050170