摘要
采用水热法合成了一个含苯并咪唑配体和Keggin结构杂多酸阴离子的一维线性超分子配合物(C7H7N2)4(PMo12O40).2H2O.通过红外、差热热重、元素分析、X-射线单晶衍射对其进行了表征.结果表明:配合物的基本结构单元是由Keggin结构杂多酸阴离子[PMo12O40]4-和[C7H7N2]+阳离子及结晶水组成;不同的结构单元之间通过氢键和π-π堆积作用形成超分子结构;配合物属于三斜晶系,P-1空间群,晶胞参数为:a=0.984 05(7)nm,α=70.494(5)°,b=1.135 88(7)nm,β=82.285(5)°,c=1.385 61(10)nm,γ=71.161(6)°,V=1.381 08(16)nm3,Z=1,Rgt(F)=0.063 1,ωRref(F2)=0.139 2.
A infinite one - dimensional chain supramolecular comploud (C7H7N2)4(PMO12O40)·2H2O was synthesized by hydrothermal methods and structurally characterized by IR spectroscopy, TG- DTA, Elemental analyses and single -crystal X- ray diffraction, single -crystal X -ray diffraction. The results indicate that the structural unit of the comploud consists of [ PMo12 040 ]4- heteropolyoxoanion and [ C6H7N2 ] ^4- cations. The supramolecular structure was formed via intermolecular hydrogen - bonding and π - π interaction between the different basic structural units. The compound crystallized in the triclinic, space group P - 1, a = 0. 984 05 (7) nm, a =0.704 94(5) o, b = 0. I13 588(7) nm,β = 0.822 85(5) °, c = 0. 138 561(10) nm, y =0.711 61 (6)°, V = 1.381 08(16) nm^3, Z =1, Ro(F) = 0.063 1,ωRref( F^2) = 0.1392.
出处
《湖南科技大学学报(自然科学版)》
CAS
北大核心
2011年第4期91-97,共7页
Journal of Hunan University of Science And Technology:Natural Science Edition
基金
湖南科技大学2009年研究生创项目(S090120)
湖南省科技厅计划项目(2011FJ4154)
关键词
杂多酸
苯并咪唑
水热法
晶体结构
polyoxometalate
benzimidazole
hydrothermal methods
crystal structure