The reactivity of o-amidophenolate indium(iii) complexes towards different oxidants was investigated. The mono- and biradical o-iminobenzosemiquinonato indium(III) complexes were synthesized and characterized as a result.

The review summarizes and analyzes the currently know data on the synthesis, molecular and electronic structures and magnetic properties of bi-, tri- and tetraradical complexes containing a diamagnetic metal ion and redox-active ligands in the paramagnetic form. The bibliography includes 193 references.

The first examples of tetrahedral nickel(ii) and cobalt(ii) bis-o-iminobenzosemiquinonates.

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