Layered and pillared metal(<scp>IV</scp>) phosphates and phosphonates

Abstract

Proton conductors, catalysts, and solar energy storage materials are some of the potential uses of various crystalline acid salts of tetravalent metals. Results obtained on a large number of metal( IV ) phosphates and phosphonates are reviewed, the α‐ and β‐structured layered metal( IV ) phosphates and the organic derivatives of zirconium phosphates being emphasized. Methods of preparation and the structures determined—especially layered and pillared—are described.