SYNTHESIS AND STRUCTURE OF AN OXOVANADIUM(V)ORGANOPHOSPHONATE CLUSTER ENCAPSULATING A CHLORIDE-ION - [CLV7O12(O3PC6H5)(6)](2-)

A hollow sphere, constructed from VO5 square pyramids and PhPO3 tetrahedra, which encapsulates a chlorine atom—this is an apt description of the anion in 1 (structure shown on the right). At first glance this anion, with its spheroidal structure, appears similar to known polyoxoanions; however, closer inspection reveals the striking structural similarities to analogous binuclear building blocks and to the layered solid VO(O3PR), H2O, which extend beyond purely topological relationships to chemical behavior. (Figure Presented.) Copyright © 1994 by VCH Verlagsgesellschaft mbH, Germany