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Synthesis and Crystal Structure of a Complex of Melamine with Benzoic Acid


  A new complex of melamine(MA) with benzoic acid(HBA) was prepared,affording [(HMA+)(BA-)]·2H2O. Each HBA molecule is deprotonated and one triazine nitrogen atom of MA is protonated. The adjacent HMA+ cations are related via an inverse center to form ribbons with a pair of N―H···N hydrogen bonds. COO- groups of BA- anions are hydrogen bonded to alternate sides of the (HMA+)∞ ribbons to generate indention 1D tapes,which are extended into a 3D structure via N―H···O-and N―H···OW hydrogen bonds and π···π stacking interactions. Predominant patterns of the hydrogen bond present in the complex are anion/water and amino/water tape structures. The hydrogen-bonding patterns consist of alternate 6,10-membered rings sharing two edges. Infrared(IR) spectroscopy conforms that proton transfer has taken place in the complex.……   
[关键词]:Hydrogen bond;Crystal structure;Melamine;Benzoic acid
[文献类型]:期刊
[文献出处]: 《Chemical Research in Chinese Universities2008年04期
[格式]:PDF原版; EPUB自适应版(需下载客户端)