STRUCTURAL DIVERSITY IN THALLIUM CHEMISTRY. Margaret James, Department of Chemistry, Mount Saint Vincent University, Halifax, Nova Scotia, Canada B3M 2J6; Anthony Linden, IOC - University of Zürich, CH-8057 Zürich, Switzerland; Bruce James, John Liesegang, Vilma Zuzich, Department of Chemistry, La Trobe University, Bundoora, Victoria 3083, Australia

The structures of several chlorothallate (III) salts will be reported and analyzed. Of special interest is the variety of modes for obtaining high coordination at Tl. These modes include monomeric TlCl₅^2- species, a dimer and a variety of anionic chain forming species. The role of the cation and hydrogen bonding in the compound is investigated.