Inverse coordination metal complexes with oxalate and sulfur, selenium and nitrogen analogues as coordination centers. Topology and systematization

The review is part of a series of articles which introduce the emerging concept of inverse coordination. The article presents a panorama of inverse coordination complexes (i.e. metal compounds displaying an arrangement of acceptor and donor sites opposite to that occurring in conventional coordination complexes) built around oxalato anions and sulfur, selenium and nitrogen analogues. It covers the molecular topologies of metal complexes with oxalate, tetrathiooxalate, trithiooxalate, dithiooxalate, dithioamide, selenooxalate, oxamidine, oxamate and oxamide as coordination centers (centroligands) and illustrates the diversity and multitude of such complexes.