A new methanolato-bridged dinuclear oxovanadium(V) complex [VO(L)(OMe)]2 (I) derived from N'-(2-hydroxy-5-methylbenzylidene)-2-methylbenzohydrazide (H2L) and a new mononuclear oxovanadium(V) complex [VO(L')(OMe)(MeOH)] (II) derived from 3-chloro-N'-(2-hydroxy-3-methylbenzylidene)benzohydrazide (H2L') were prepared and characterized by infrared spectra and single crystal X-ray determination (CIF files CCDC nos. 974793 (I) and 974792 (II)). Complex I crystallizes as triclinic space group P $$\overline 1 $$ with unit cell dimensions a = 8.5063(4), b = 9.5367(4), c = 11.2445(5) Å, α = 71.740(1)°, β = 72.341(1)°, γ = 74.509(1)°, V = 810.37(6) Å3, Z = 1, R 1 = 0.0527, wR 2 = 0.1316, S = 0.969. The complex possesses a crystallographic inversion center symmetry between two V atoms. Complex II crystallizes as triclinic space group P $$\overline 1 $$ with unit cell dimensions a = 7.4257(3), b = 9.9475(4), c = 13.1021(5) Å, α = 71.954(1)°, β = 85.657(1)°, γ = 84.127(1)°, V = 914.38(6) Å3, Z = 2, R 1 = 0.0365, wR 2 = 0.0957, S = 1.039. The tridentate aroylhydrazone ligands coordinate to the V center through azomethine nitrogen, phenolate oxygen, and enolate oxygen. The V atoms in the complexes are in octahedral coordination. Crystal structures of the complexes are stabilized by hydrogen bonds and π···π interactions.
Russian Journal of Coordination Chemistry – Springer Journals
Published: Sep 2, 2015
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