氢键型链状有机超分子晶体:2-吡嗪甲酸  

Chain-like Organic Supramolecular Crystal Constructed by Hydrogen Bonding:2-Pyrazinecarboxylic Acid

作　　者：孙家娟[1] 董璠[1] 范广[1] 

机构地区：[1]咸阳师范学院化学与化工学院,陕西咸阳712000

出　　处：《商洛学院学报》2009年第6期26-27,67,共3页Journal of Shangluo University

基　　金：陕西省教育厅科研基金项目(09JK798);咸阳师范学院大学生科研训练计划项目(0805508056)

摘　　要：通过溶液法培养了2-吡嗪甲酸的单晶,利用单晶X-射线衍射法测定了其晶体结构,同时利用元素分析、红外光谱对其进行了表征。晶体学数据:正交晶系,Pnma空间群,a=11.3557(18),b=6.4573(10),c=7.3674(12),α=90°,β=90°,γ=90°,V=540.23(15)3,Z=4,ρcalc=1.455g·cm-3,R1=0.0400,wR2=0.1099。结构分析表明2-吡嗪甲酸分子通过氢键作用连接成一维链状超分子结构。Single crystal of 2-pyrazinecarboxylic acid has been obtained through diffusion method and structurally characterized by single crystal X-ray diffraction analysis.Crystal dad a：Orthorhombi c,Pnma space group,α=11.3557（18）A,b=6.4573（10）A,c=7.3674（12）A,α=90°,β=90°,γ=90°,V=540.23（15）A3,Z=4,pcalc=1.455g·cm^-3,R1=0.0400,wR2=0.1099. Structure analysis reveals that 2-pyrazinecarboxylic acid molecules are linked through hydrogen bonding interactions to display one-dimensional chain-like supramolecular structure. In addition, IR and elemental analysis are presented.

关 键 词：2-吡嗪甲酸 晶体结构 超分子 

分 类 号：O641[理学—物理化学]