异金属螺旋链化合物{[W_6Ag_6S_(24)][La(DMSO)_8]_2}_n的合成及结构表征  

Synthesis and Structure Characterization of Heterometallic Helical Chain Compound {[W_6Ag_6S_(24)][La(DMSO)_8]_2}_n

作　　者：李亚敏[1] 杨大纲[1] 

机构地区：[1]河南大学化学化工学院,河南开封475004

出　　处：《化学研究》2010年第3期8-10,14,共4页Chemical Research

摘　　要：合成了异金属含硫化合物{[W6Ag6S24][La(Me2SO)8]2}n,并用X射线单晶衍射法测定了其结构.结果表明,该化合物属三斜晶系,P-墿空间群;晶胞参数为:a=1.577 5(3),b=1.818 7(4),c=1.952 3(4)nm,α=92.210(2)°,β=106.567(3)°,γ=92.494(2)°,Z=2,Dc=2.510 g/cm3,μ=9.081 mm-1,F(000)=3 792,R1=0.040 9,wR2=0.086 9.化合物中的阴离子[(W6Ag6S24)6-]n具有异金属螺旋链结构,所有W原子和Ag原子均与S原子形成四面体配位构型.Heterometallic helical chain compound {[W6Ag6S24][La（DMSO）8]2}n was synthesized.The structure of the synthesized product was characterized by means of single-crystal X-ray diffraction.Results indicate that the synthesized compound crystallizes in triclinic system and belongs to space group P-ī,with crystal cell parameters of a =1.577 5（3）,b = 1.818 7（4）,c = 1.952 3（4） nm,α = 92.210（2）°,β = 106.567（3）°,γ = 92.494（2）°,Z = 2,Dc = 2.510 g/cm3,μ = 9.081 mm-1,F（000） = 3 792,R1 = 0.040 9,and wR2 = 0.086 9.Besides,the configuration of the polymeric anion [（W6Ag6S24）6-]n in the compound can be described as a helical chain,in which all the W atoms and Ag atoms are coordinated with S atoms in tetrahedral geometry.

关 键 词：异金属 螺旋链化合物 合成 结构 

分 类 号：O614.12[理学—无机化学] O614.33[理学—化学]