Reactions of dithizone with transition metal complexes of acetylacetone and oxine

Abstract

Synthesis of mixed acetylacetonato-dithizonato complexes of VO²⁺, Cr³⁺, Fe³⁺ and CO³⁺ as well as dithizonato- oxinato complexes of CO²⁺ and Ni²⁺ is described. On the basis of electronic spectral data, the mixed acetyl-acetonato complexes are assigned octahedral and the mixed oxine complexes tetrahedral geometry. Photolysis of the complexes in chloroform solution is also investigated. Photooxidation through a reactive excited state of the charge transfer to solvent (CTTS) type is suggested. Thermal behaviour of the complexes has been also discussed.