Cobalt Thiolates with Organic N,N,S-Tridentate Ligand: Conversion of Thiolate Complex to Sulfinate Complex via Sulfenate

Abstract

Abstract Mononuclear cobalt(III) complex with 2-[(3-aminopropyl)amino]ethanethiol (Hapaet), [Co(apaet)2]ClO4 (1) and the sulfinate complex, [Co(apaetO2)2]ClO4 (2) were synthesized and characterized by measurements of the elemental analysis, infrared and electronic spectra (UV-vis-NIR), and temperature dependence of magnetic susceptibilities (4.5—300 K), and DFT calculations. X-Ray crystal structure analysis of 1 and 2 revealed an octahedral CoS2N4 or Co(SO2)2N4 chromophore with meridional chelation of two apaet− or apaetO2 −. Conversion of 1 to the sulfinate complex 2 via the sulfenate complex was investigated by UV-vis spectra. Oxidation reaction of capsanthin with 1 was also examined.