Transition metal oxalate complex (original) (raw)

Transition metal oxalate complexes are coordination complexes with oxalate (C2O42−) ligands. Some are useful commercially, but the topic has attracted regular scholarly scrutiny. Oxalate (C2O42-) is a kind of dicarboxylate ligand. As a small, symmetrical dinegative ion, oxalate commonly forms five-membered MO2C2 chelate rings. Mixed ligand complexes are known, e.g., [Co(C2O4)(NH3)4]κ+. Structures of Some Metal Oxalate Complexes * [Cr2(oxalate)5]4-. * Potassium ferrioxalate (K3[Fe(C2O4)3]·3H2O) * Oxaliplatin, an anticancer drug * [Zr(oxalate)4]4-