title: An unusual asymmetric polyoxomolybdate containing mixed-valence antimony and its derivatives: [Sb4VSb2IIIMo18O73(H2O)2]12- and {M(H2O)2[Sb4VSb2IIIMo18O73(H2O)2]2}22- (M = MnII, FeII, CuII or CoII).
abstract: A new type of heteropolyanion containing mixed-valence antimony, [Sb4(V)Sb2(III)Mo18O73(H2O)2](12-) (1a), and its four derivatives, {M(H2O)2[Sb4(V)Sb2(III)Mo18O73(H2O)2]2}(22-) (M = Mn(II), Fe(II), Cu(II), or Co(II)) (2a-5a), have been isolated as ammonium salt, and their structures were determined by single-crystal X-ray diffraction. The framework of the polyanion 1a displays a curious asymmetric structure, and there exist six types of Sb coordination environments and seven types of {MoO6} octahedra. The title compounds were also characterized by elemental analyses, IR, UV-vis, Raman spectra, and cyclic voltammogramms.
authors.affiliation: Department of Chemistry, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Northwest University, Xian 710069, China. xglin707@163.com
authors.forename: Ganglin
authors.initials: G
authors.lastname: Xue
authors.forename: Xuemei
authors.initials: X
authors.lastname: Liu
authors.forename: Haisheng
authors.initials: H
authors.lastname: Xu
authors.forename: Huaiming
authors.initials: H
authors.lastname: Hu
authors.forename: Feng
authors.initials: F
authors.lastname: Fu
authors.forename: Jiwu
authors.initials: J
authors.lastname: Wang