Notes. Paramagnetic dioxygen complexes of rhodium
Abstract
Electron spin resonance spectra of cis- and trans-[Rh(O2)(en)2Cl]+, [{Rh(en)2Cl}2(µ-O2)]3+, and [{Rh(4Me-py)4Cl}2(µ-O2)]3+(en = ethylenediamine, 4Me-py = 4-methylpyridine) ions in solution show that the unpaired electron is largely localized on the dioxygen and that the complexes may nominally be described as having the RhIII–O2– unit. A molecular-orbital picture of the bonding in the complexes is presented.
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