多酸基电荷转移配合物(C_2H_8N)_6(As_2Mo_6O_(26))·4H_2O的合成、晶体结构及催化性能研究  

Synthesis,Crystal Structure and Catalytic Performance of a Charge-Transfer Complexe(C_2H_8N)_6(As_2Mo_6O_(26))·4H_2O

作　　者：黄怡岚[1] 张传磊[1] 肖菡曦[1] 林敏茹[1] 黄羽[1] 蔡铁军[1] 

机构地区：[1]湖南科技大学化学化工学院,湖南湘潭411201

出　　处：《湘潭大学自然科学学报》2013年第2期52-57,共6页Natural Science Journal of Xiangtan University

基　　金：湖南省科技计划项目(2011FJ4154);理论化学与分子模拟省部共建教育部重点实验室资助

摘　　要：采用水热法合成并通过溶液挥发法生长出一种新的多酸基电荷转移配合物(C2H8N)6(As2Mo6O26).4H2O.X-射线单晶衍射结果表明:配合物属于三斜晶系,P-1空间群,晶胞参数为:a=8.636 1(7),"=70.441(2)°,b=11.234 6(9),#=70.943(3)°,c=12.290 4(9),γ=79.253(3)°,V=1 058.07(14)3,Z=1,R(F)=0.057 7,ωR(F2)=0.135 0,S=1.006.该配合物基于杂多阴离子[As2Mo6O26]6-和质子化的二甲胺阳离子,通过氢键作用形成二维平面结构.通过红外、差热热重、元素分析等对其结构进行了表征,通过气相色谱法跟踪测试了其催化氧化消除甲醇的研究.结果表明,该配合物具有良好的催化消除甲醇的能力.One charge-transfer eomplexe based on polyaeid has been synthesised by hydrothermal technol- ogy, （C2H8N）6（As2Mo6O26）·4H2O. The single-crystal X-ray diffraction shows that the compound crys- tallized in the triclinic, space group P-l,a==8. 636 1（7） A,a=70. 441（2）°, b=ll. 234 6{9}A,fl=70. 943 （3）°,c=12. 290 4（9）.A,γ=79. 253（3）°,V=1 058.07{14）A3 ,Z=l, R（F）= 0.057 7,a,R（F2 ）=0. 135 0, S = 1. 006. The compound consists of one heteropolyanion [As2Mo6O26]6- , six protoned dimethylamine cat- ions and four water moleculars which are connected through hydrogen bonds result in a 2D plane structure. The structure was characterized by IR spectroscopy, TC,-DTA and Elemental analyses. The compound has high catalytic activity {or the oxidation of methanol tested in a continuous-flow fixed-bed micro-reactor.

关 键 词：电荷转移配合物 杂多阴离子 催化消除 甲醇 

分 类 号：O643.36[理学—物理化学]