Chemistry of mononuclear and binuclear oxidic vanadium(V), VVVV, and VVVIV azophenolates

• DOI: 10.1021/ic00075a063
• Publication Date: 2005-03-18T06:23:27Z
• Authors: Somnath Dutta; Partha Basu; Animesh Chakravorty
• Keywords: 01 natural sciences; 0104 chemical sciences

The aerial reaction of 2,2'-dihydroxyazobenzene (H 2 L) with bis(acetylacetonato)oxovanadium(IV) in methanol affords binuclear V v 2 O 3 L 2 . In the presence of KOH, KV v O 2 L.1.5H 2 O is isolated. Dilute acids convert VO 2 L. to V 2 O 3 L 2 via V v O(OH)L. The electronic and IR spectra of the complexesare described. In crystalline KVO 2 L.1.5H 2 O, the vanadium(V) atom has square pyramidal geometry. The base is formed by coordinated ONO atoma of L 2- and an oxo oxygen atom