三维无机—有机微孔化合物PbC_4H_4O_4的水热合成与结构表征  

Synthesis and Crystal Structure Characterization of a 3D Inorganic-organic Hybrid Framework Microporous Compound PbC_4H_4O_4

作　　者：杜娟[1] 唐璐[1] 

机构地区：[1]吉林师范大学化学学院,吉林四平136000

出　　处：《吉林师范大学学报（自然科学版）》2009年第3期118-120,共3页Journal of Jilin Normal University:Natural Science Edition

基　　金：吉林省科技厅项目(20082112)

摘　　要：化合物PbC4H4O4是在定温水热的条件下合成的,其晶体结构是用X-射线单晶衍射仪测定的.具体数据为:P2(1)/c witha=0.968 0(2)nm,b=0.672 76(16)nm,c=0.900 8(2)nm,β=106.901(4)°,V=0.561 3(2)nm3,Z=4,Dc=3.825 g.cm-3,Mr=323.26,μ=0.071 073 nm,F(000)=568,R1=0.059 6,ωR2=0.150 6.其结构为两个琥珀酸配体连接一个铅离子构成二维链,再由此二维琥珀酸配体的羧基氧连接其它链上的铅离子形成三维结构.在(101)方向上形成的六元微孔孔径约为0.672 8(2)nm×0.451 0(1)nm.另外,琥珀酸在化合物中起到了无机配体和主要结构物质的双重作用.The title compound PbC4H4O4 was synthesized under moderate temperature hydrothermal conditions and its crystal structure was determined by single crystal X-ray diffraction. The compound crystallizes in the monoclinic system and belongs to space group P2（1）/c with 0=0.9680（2）nm,b=0.67276（16）nm,c=0.9008（2）nm,β=106.901（4）°,V=0.5613（2）nm^3,Z=4,Dc：3.825g·cm^-3,Mr=323.26,u=0.071073am,F（000）=568,R1=0.0596,ωR2=0.1506. Its structure reveals that two succinic acid bridge two Pb（Ⅱ ） to form a 2D ring, and the carboxylate groups of succinic acid also bridge Pb（ Ⅱ ） of another ring to form a novel 3D architecture. It contains sixmember tings channels that are about 0. 672 8（2）nm × 0.451 0（ 1 ）nm viewed along the （101） direction. In addition, it is believed that the succinic acid acts as both an organic ligand and a structure-directing agent in the synthesis of the title compound.

关 键 词：无机-有机杂化骨架结构 微孔化合物 晶体结构 

分 类 号：O611.4[理学—无机化学]