Electrical and magnetic properties of copper arylcarboxylates

The present work is a part of an extensive research program devoted to elucidate the electronic fundaments of the high temperature superconductivity of the novel superconducting mixed oxides. This research program is based on the hypothesis that such superconductive properties are a result of a one- or two-dimensional perovskite type feature, such as Cu-O square planar or octahedral structure with metal centres of mixed valency and, as a rule, with usually a certain structural and stoichiometrical disorder. The goal of the present study was to prepare and characterize aromatic copper complexes with such Cu-O structural elements arranged in a one- or two-dimensional framework and to study their electrical and magnetic properties. Aromatic ligands were chosen because of the local electron density could be easily modified simply by the variation of substituents in the aromatic moiety. This in turn could make feasible to alter the electrical and magnetic properties of the polymeric complexes. (author) figs., tabs., 252 refs