Mixed-ligand oxovanadium(V) complexes incorporating bidentate salicylaldehyde and tridentate aldimine ligands

✍ Scribed by Sankar P. Rath; Sujit Mondal; Tapas Ghosh

• Book ID: 104637810
• Publisher: Springer
• Year: 1996
• Tongue: English
• Weight: 248 KB
• Volume: 21
• Category: Article
• ISSN: 0340-4285
• DOI: 10.1007/bf00139024

✦ Synopsis

Mixed-ligand oxovanadium(V) complexes, [vvo(L) -(sal)], containing salicylaldimine ligands of c~-amino acids HzL [,,(1); R = Me, i-Pr and CHzPh ] and salicylaldehyde (Hsal) have been synthesized. The coordination sphere of the complexes is of the VO(ONO)(OO) type, where O atoms are phenolic, carboxylic and aldehydic, and N is of the azomethine type. The complexes are diamagnetic and exhibit only one LMCT band at ca. 490nm. They display quasi-reversible one-electron reduction peaks in a CHzClz-MeCN (2:1v/v) mixture in the 0.07-0.13V versus s.c.e, range. A trend in the redox potential data has been rationalized on the basis of conventional normal substituent effects.