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Synthesis and crystal structures of schiff base oxovanadium(V) complexes [VO(BN)(OCH3)]2 and [VO2(BM)]
Cui, Yong-Ming,Cai, Ying-Jie,Chen, Wu
, p. 1244 - 1248 (2011)
[VO(acac)2] reacts with the Schiff bases N'-(2-hydroxy-4- diethylaminobenzylidene)-2-nitrobenzohydrazide (H2BN) and N'- (2-hydroxy-4-diethylaminobenzylidene)-2-methoxybenzohydrazi de (HBM), respectively, in absolute methanol to give the oxovanadium( V) complexes [VO(BN)(OCH3)]2 (1) and [VO2(BM)] (2). Both complexes were characterized by elemental analysis, infrared (IR) spectra, and single-crystal x-ray determination. The complex (1) crystallizes in the monoclinic space group P21/c, with a = 10.828(2), b = 18.177(4), c = 10.778(2) A, β = 106.914(3)°, V = 2029.6(7) A3, Z = 4. The complex (2) crystallizes in the triclinic space group P-1, with a = 8.459(2), b = 10.068(3), c = 11.776(3) A, α = 88.727(2), β = 88.904(3), γ = 69.486(3)°, V = 939.0(4) A3, Z = 2. Complex (1) is a centrosymmetric methoxy-bridged dimeric oxovanadium(V) compound, and complex (2) is a monomeric dioxovanadium(V) compound. Copyright Taylor & Francis Group, LLC.
