一维链状化合物｛(C_2H_(10)N_2)[Mo_3O_(10)]｝_n的水热合成、晶体结构与表征

Hydrothermal Synthesis,Crystal Structure and Property of the Double Chain{(C_2H_(10)N_2)[Mo_3O_(10)]}_n

在水热条件下合成了一维链状结构多金属氧酸盐化合物{(C2H10N2)[Mo3O10]}n,并用IR、TG-DSC和单晶X-ray衍射等手段进行了表征。结果表明,化合物属于单斜晶系,P21/n空间群,晶胞参数a=0.808 40(2)nm,b=1.446 50(3)nm,c=0.891 50(2)nm,α=90°,β=98.140(2)°,γ=90°,V=1.031 97(4)nm3,Z=4,Dc=3.282g/cm3,R1=0.027 9,wR2=0.072 9。化合物分子结构单元由一个质子化乙二胺和一个[Mo3O210-]阴离子构成。[Mo3O210-]中相邻的MoO6八面体相互作用形成一维无限链状结构,毗邻的单链相互缠绕形成双链结构。热性质研究表明,标题化合物热稳定性较好,在290℃才开始有热失重的发生。同时,又将该化合物修饰到电极上,研究了其电化学行为。

A novel double chain {（C2H10N2）[Mo3O10]}n was synthesized under a hydrothermal condition and characterized by IR,TG-DSC and single-crystal X-ray diffraction.The title compound crystallizes in a monoclinic crystal system,with space group P21/n,a=0.808 40（2） nm,b=1.446 50（3） nm,c=0.891 50（2） nm,α=90°,β=98.140（2）°,γ =90°,V=1.031 97（4） nm3,Z=4,Dc=3.282 g/cm3,R1= 0.027 9 and wR2 = 0.072 9.The structural refinement indicates that the unit of the tile complex consists of one discrete ethylenediamine cation and one trimolybdate anion.The infinite chains running parallel to the a axis made up of distorted MoO6 octahedra connected by corners,edges and faces,which are further entangled together to produce the double chain.