Crystal structure of CsGdNbClO in the structural evolution of niobium oxychlorides with octa-hedral Nb-cluster units.

CsGdNbClO, dicaesium gadolinium hexa-niobium penta-deca-chloride trioxide, was synthesized by solid-state reactions starting from a stoichiometric mixture of CsCl, GdO, Nb, NbCl, and NbO. The crystal structure is based on octa-hedral Nb cluster units (point group symmetry 3.2) with composition [(NbCl O )Cl ] where and denote inner and outer ligands.