Collect. Czech. Chem. Commun. 2001, 66, 119-124

Outer-Sphere Charge-Transfer Excitation in the Ion Pair [Co(NH3)6]3+[B12H12]2-

Horst Kunkely and Arnd Vogler*

Institut für Anorganische Chemie, Universität Regensburg, D-93040 Regensburg, Germany


The aqueous ion pair [Co(NH3)6]3+[B12H12]2- displays an UV absorption at λmax = 250 nm which is assigned to an outer-sphere charge-transfer (OSCT) transition from [B12H12]2- to [Co(NH3)6]3+. OSCT excitation leads to photoredox reaction with the formation of Co2+ (Φ = 0.03 at λirr = 313 nm).

Keywords: Charge transfer complexes; Photochemistry; Cobalt(III) complexes; Boranates; Boranes; UV spectroscopy.

References: 34 live references.