title: Copper-rich framework sulfides: A(4)Cu(8)Ge(3)S(12) (A = K, Rb) with cubic perovskite structure.
abstract: Two copper-rich open-framework sulfides, K(4)Cu(8)Ge(3)S(12) (1) and Rb(4)Cu(8)Ge(3)S(12) (2), have been synthesized under solvothermal conditions. Compounds 1 and 2 are isostructural and contain icosahedral [Cu(8)S(12)](16-) clusters as basic building blocks. These clusters are primitive cubic packed and connect to one another by discrete Ge(4+) ions to generate 3D copper-rich Cu-Ge-S framework and form 3D channels along 100 directions where the alkali metal cations reside. These two open-framework sulfides crystallize in cubic perovskite structure.
authors.affiliation: Department of Chemistry, Dalian University of Technology,Dalian 116024, China.
authors.forename: Ren-Chun
authors.initials: RC
authors.lastname: Zhang
authors.forename: Hua-Gang
authors.initials: HG
authors.lastname: Yao
authors.forename: Shou-Hua
authors.initials: SH
authors.lastname: Ji
authors.forename: Mei-Chen
authors.initials: MC
authors.lastname: Liu
authors.forename: Min
authors.initials: M
authors.lastname: Ji
authors.forename: Yong-Lin
authors.initials: YL
authors.lastname: An