一维锯齿状化合物[(en)_2(Mo_6O_(20)H_4)]_n的水热合成及晶体结构  

Hydrothermal Synthesis and Crystal Structure of an One-dimensional Zigzag Complex [(en)_2(Mo_6O_(20)H_4)]_n

作　　者：王子梁[1] 魏林恒[2] 王敬平[1] 

机构地区：[1]河南大学化学化工学院,河南开封475001 [2]河南大学环境与规划学院,河南开封475001

出　　处：《化学研究》2004年第1期27-29,32,共4页Chemical Research

基　　金：河南省杰出青年基金(No.004031800);河南省教育厅基金资助项目(No.20011500024).

摘　　要：利用Na2MoO4·2H2O,MoO3,乙二胺,和H2O通过水热合成法合成了一维锯齿状化合物[(en)2(Mo6O20H4)]n.晶体解析表明,该化合物属于单斜晶系,P21/n空间群,a=0.80680(16)nm,b=1.4371(3)nm,c=0.88874(18)nm,β=97.89(3)°,V=1.0207(4)nm3,Z=2,Dc=3.305Mg·m-3,μ=3.681mm-1,F(000)=960.该化合物结构单元由二个游离的乙二胺分子和一个阴离子Mo6O4-20阴离子中,六20构成.在Mo6O4-个钼原子和八个相邻的氧原子构成两个八员环,在每个八员环的两侧分别存在着一个与三个钼原子相连的桥氧.One-dimensional zigzag compound [(en)_(2)(Mo_(6)O_(20)H_(4))]_( n ) was prepared by hydrothermal synthesis and characterized by single crystal X-ray diffraction analysis. The crystal structure analysis indicates that the title compound belongs to monoclinic system, space group P2_(1)/n with cell parameters a =0.806 80(16) nm, b = 1.437 1(3) nm, c = 0.888 74(18) nm, β = 97.89(3)°, V = 1.020 7(4) nm^(3), Z = 2, Dc =3.305 Mg·m^(-3), μ = 3.681 mm^(-1), F (000)=960. The unit of the title complex consists of two discrete ethylenediamine molecules and one Mo_(6)O^(4-)_(20 )anion. In the anion Mo_(6)O^(4-)_(20), six Mo atoms and eight neighbor oxygen atoms construct two eight-member rings. Moreover, there is a triply oxygen capped on the two sides of each eight-member ring.

关 键 词：一维锯齿状化合物 [(en)2(Mo6O20H4)]n 水热法 合成 晶体结构 多金属氧酸盐 多金属钼酸盐 

分 类 号：O614.612[理学—无机化学]