ChemInform Abstract: Synthesis and Characterization of Encapsulated Cobalt(III) Hydroxylamine Complexes.

Abstract

302ChemInform Abstract On treatment of the cage complexes (I) with H2O2 in basic solution, up to three coordinated N sites are oxidized to hydroxylamine groups. The complexes isolated using ion-exchange techniques are (IIa)-(IIe). (IId) is characterized by an X-ray structure determination (space group P212121, Z=4). The hydroxylamine groups are rather acidic and deprotonation leads to a profound change in redox potential. Reduction back to the sec. amine does not proceed fast with one-electron reagents, but is achieved using an aquo V(II) complex generating directly the aquo VO2+ compound.