Synthesis, Crystal Structure and Catalytic Property of an Oxovanadium(V) Complex Derived from N'-(3,5-Ditertbutyl-2-hydroxybenzylidene)-4-methoxybenzohydrazide

Abstract

A new oxovanadium(V) complex, [VOL(OCH₃)(CH₃OH], where L is N'-(3,5-ditertbutyl-2-hydroxybenzylidene)-4-methoxybenzohydrazide, was prepared and structurally characterized by physicochemical methods and single-crystal X-ray diffraction. The complex crystallizes in the monoclinic space group P2₁/c, with a = 8.958(1) Å, b = 12.479(2), c = 23.289(2) Å, β = 94.032(3)°, V = 2597.0(5) ų, Z = 4, R₁ = 0.0387, and wR₂ = 0.0942. X-ray structural analysis indicates that the benzohydrazone ligand coordinates to the V atom through the phenolate O, imino N, and enolic O atoms. The V atom in the complex is coordinated by one benzohydrazone ligand, one methoxy ligand, one methanol ligand, and one oxo O atom, forming an octahedral coordination. The crystal structure of the complex is stabilized by hydrogen bonds. The complex is an effective catalyst for sulfoxidation.

Keywords:

• benzohydrazone
• oxovanadium complex
• crystal structure
• sulfoxidation

Supplementary Material

Crystallographic data for the complx have been deposited with the Cambridge Crystallographic Data Centre (CCDC 990553). Copies of these information may be obtained free of charge from the Director, CCDC, 12 Union Road, Cambridge, CB2 1EZ, UK (fax: [phone]; Email: [email protected] or http://www.ccdc.cam.ac.uk).

Funding

The authors would like to acknowledge the support from Department of Yunnan Province Education for the fund of Science Research (Grant no. ZD2010003).