title: Novel copper-complex-substituted tungstogermanates.
abstract: Two copper-complex-substituted tungstogermanates [Cu5(2,2'-bpy)6(H2O)][GeW8O31].9H2O, 1, and {[Cu5(2,2'-bpy)5(H2O)][GeW9O34]}2.7H2O, 2 (2,2'-bpy = 2,2'-bipyridyl), have been hydrothermally synthesized and structurally characterized. X-ray structural analyses show that 1 is a rare tetralacunary Keggin anion of [B-beta-GeW8O31]10- substituted by copper complexes, while dimer 2 consists of two trilacunary [B-alpha-GeW9O34]10- Keggin units bridged by copper complexes. Magnetic measurement for 2 shows the presence of antiferromagnetic interactions within the dinuclear Cu2+ cations.
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China.
authors.forename: Chun-Mei
authors.initials: CM
authors.lastname: Wang
authors.forename: Shou-Tian
authors.initials: ST
authors.lastname: Zheng
authors.forename: Guo-Yu
authors.initials: GY
authors.lastname: Yang
mesh_terms: D003300:Copper; D018360:Crystallography, X-Ray; D008280:Magnetics; D008958:Models, Molecular; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D013696:Temperature; D014414:Tungsten / Q000737:chemistry
chemical_list: D009942:Organometallic Compounds; D003300:Copper; D014414:Tungsten