Synthesis, crystal structure, spectroscopy, and magnetism of a mixed valence Co(III)–Co(II)–Co(III) complex stabilized by N-(2-hydroxybenzyl)salicylaldimine

Abstract

2010) Synthesis, crystal structure, spectroscopy, and magnetism of a mixed valence Co(III)-Co(II)-Co(III) complex stabilized by N-(2-hydroxybenzyl)salicylaldimine, Journal of Coordination Chemistry, 63:3, 505-514,Here, HL b is salicylaldimine, which is afforded by an in situ transformation of H 2 L a via cleavage of the C-N bond. Complex 1 has been characterized by X-ray crystallography as well as elemental analysis, UV-Vis, and IR spectroscopy. The cathodic and anodic responses of 1 in DMF appeared at À1.46 V (Co III ! Co II , quasi-irreversible) and þ0.99 V (Co II ! Co III , irreversible) versus saturated calomel electrode, respectively. The magnetic behavior of 1 has been analyzed by the one-ion approximation with spin-orbit coupling in O h symmetry giving ¼ À121 cm À1 .