title: New skeletal 3D polymeric inorganic cluster [W4S16Cu16Cl16]n with Cu in mixed-valence states: solid-state synthesis, crystal structure, and third-order nonlinear optical properties.
abstract: A new 3D polymeric inorganic cluster with Cu in mixed-valence states was synthesized by the solid-state reaction of (NH4)2WS4, S8, CuCl, and Et4NCl; S8 may be regarded as the oxidizing agent converting Cu(I) to Cu(II) and causing the polymerization of [WS4]2-. The third-order nonlinear optical (NLO) properties are determined, and the results show that the cluster exhibits both large NLO absorptive and strong refractive behaviors.
authors.affiliation: State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, and Center for Materials Analysis, Nanjing University, Nanjing 210093, People's Republic of China.
authors.forename: Ya
authors.initials: Y
authors.lastname: Cai
authors.forename: Yan
authors.initials: Y
authors.lastname: Wang
authors.forename: Yizhi
authors.initials: Y
authors.lastname: Li
authors.forename: Xiaoshu
authors.initials: X
authors.lastname: Wang
authors.forename: Xinquan
authors.initials: X
authors.lastname: Xin
authors.forename: Caiming
authors.initials: C
authors.lastname: Liu
authors.forename: Hegen
authors.initials: H
authors.lastname: Zheng