均苯三酸与N-甲基吡咯烷酮形成的加合物晶体表征  

Characterization of the Adductive Crystal of Trimesic Acid and N-Methyl Pyrrolidone

作　　者：彭革[1,2] 郭霞[2] 成有为[2] 李希[2] 

机构地区：[1]宁波工程学院化工学院,浙江宁波315016 [2]浙江大学化学工程系,浙江杭州310027

出　　处：《化学世界》2010年第10期623-625,共3页Chemical World

基　　金：浙江省重大科技攻关项目(2006C14013)

摘　　要：均苯三酸(TMA)固体在溶剂N-甲基吡咯烷酮(NMP)中的重结晶是一种新的溶剂化晶体,采用色谱、热重、X-射线衍射方法对新晶体进行了表征,结果表明:TMA-NMP晶体是1个TMA分子与3个NMP分子通过O-H…O的氢键作用形成的加合物结晶体,该晶体不稳定,在75℃以上受热分解后脱除溶剂。计算得出,TMA与NMP之间的氢键键能为-127.9 kJ/mol。The adductive crystals formed by trimesic acid and N-methyl pyrrolidone were characterized with HPLC,TG and XRD.The results showed that the crystal consists of one TMA molecule and three NMP molecules tied by O-H…O hydrogen-bonding.The crystal is unstable above 75 ℃,at which it is prone to decompose and disengage the solvent.The calculated hydrogen-bonding energy between TMA and NMP is-127.9 kJ/mol,belonging to the category of strong hydrogen bond.

关 键 词：均苯三甲酸 N-甲基吡咯烷酮 加合结晶 

分 类 号：TQ026.5[化学工程]