[4,6-Di-<i>tert</i>-butyl-<i>N</i>-(2,6-Dimethylphenyl)-<i>o</i>-Amidophenolato][4,6-Di-<i>tert</i>-butyl-<i>N</i>-(2,6-Dimethylphenyl)-<i>o</i>-Iminobenzosemiquinolato](2,2′-Bipyridyl)Indium(III)

Abstract

A six-coordinated indium(III) complex (APMe)(imSQMe)In(bipy) (1), bearing two types of redox-active ligands—mono- (imSQMe) and dianion (APMe) of 4,6-di-tert-butyl-N-(2,6-dimethylphenyl)-o-iminobenzoquinone and 2,2′-bipyridyl—was synthesized and characterized in detail. The intense, well-resolved ESR spectrum of 1 in dichloromethane solution clearly indicates the spin density delocalization between both AP and imSQ ligands. The UV-vis spectrum of 1 possesses an absorption band in the NIR region. The molecular structure of compound 1 was established by single-crystal X-ray diffraction analysis.

Keywords

• indium
• redox-active ligand
• <i>o</i>-amidophenolate
• <i>o</i>-iminobenzosemiquinolate
• bipyridyl
• charge transfer