Synthesis and Crystal Structure of a Phenolato-bridged Dinuclear Oxovanadium(V) Complex Derived from N’-[1-(2-Hydroxyphenyl)ethylidene]-1H-indole-3-carbohydrazide

Abstract

A tridentate ligand, N’-[1-(2-hydroxyphenyl)ethylidene]-1H-indole-3-carbohydrazide (H₂L), reacts with vanadyl sulfate in methanol to give a centrosymmetric dinuclear complex, [VOL(OCH₃)]₂. The complex was characterized by physicochemical and spectroscopic methods. The crystal of the complex is monoclinic with space group P2₁/c, a = 8.345(3), b = 9.469(3), c = 24.087(4) Å, β = 96.290(3)°, V = 1892.1(9) ų, Z = 4. X-ray crystallography indicates that each V^V atom is in a distorted octahedral coordination. The two V atoms are bridged by two phenolate O atoms, with a distance of 3.540(2) Å.

Keywords:

• crystal structure
• dinuclear complex
• hydrazone
• oxovanadium complex
• synthesis

Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (21003014), Hunan Provincial Natural Science Foundation of China (10JJ6019), Hunan Provincial Science and Technology Projects (2010FJ3167, 2010 GK3169), Open Project of High School Key Laboratory of Hunan Province (2009LC 004), and Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation (Changsha University of Science and Technology, 2010CL07).