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报道了〔WOS3Ag3Br(PPh3) 3〕·(OPPh3)簇合物 (C72 H6 0 Ag3BrO2 S3P4W ,Mr=176 4.6 1)单晶的合成和结构。该晶体属于三方晶系 ,空间群为R3 ,晶胞参数 :a =16 .14 0 (3) ,c =2 3 .0 0 3(4) ,V =5 189.4(15 ) 3,μ(MoKα) =3 .2 98mm- 1 ,Z =3 ,F(0 0 0 ) =2 5 98,Dc=1.6 94g/cm3。独立衍射点 2 181,可观察衍射点 195 2 (I≥ 2σ(I) ) ,R =0 .0 496 ,wR =0 .12 48。该晶体由簇合物分子〔WOS3Ag3Br(PPh3) 3〕和以P为中心的扭曲四面体结构的中性分子OPPh3 构成 ,其中的簇合物分子的骨架为由1个W原子、3个S原子、3个Ag原子和 1个Br原子构成的立方烷状。W、O(1)和Br原子位于C3轴上。
The synthesis and structure of single crystals of [WOS3Ag3Br (PPh3) 3] (OPPh3) cluster (C72H6O Ag3BrO2 S3P4W, Mr = 176 4.6 1) were reported. The crystal belongs to the trigonal system with a space group of R3 and unit cell parameters: a = 16 .14 0 (3), c = 2 3 .0 0 3 (4), V = 5 189.4 (15) = 3 .2 98 mm-1, Z = 3, F (0 0 0) = 2 5 98, Dc = 1.6 94 g / cm 3. Independent diffraction point 2 181, can be observed diffraction point 195 2 (I ≥ 2σ (I)), R = 0. 0 496, wR = 0.1248. The crystal is composed of a cluster molecule [WOS3Ag3Br (PPh3) 3] and a distorted tetrahedron-centered neutral molecule OPPh3 centered on P, wherein the cluster molecule has a skeleton composed of one W atom, three S atoms , Three Ag atoms and one Br atom. W, O (1) and Br atoms are located on the C3 axis.