NMRandFT-IRAnalysisofNewMolecularComplex1-Piperidine-carboxylate-Piperidinium-H2O

被引：0

作者：

JIANG Huiming ZHANG Shubiao JIN Rongchao College of Life Science Dalian Nationalities University Dalian Liaoning China Department of Chemistry Carnegie Mellon University Pittsburgh PA USA ^{[1
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机构：

来源：

Wuhan University Journal of Natural Sciences | 2008年 / 01期

关键词：

piperidine; molecular complex; NMR; FT-IR; hydrogen bond; electron transfer;

D O I：

暂无

中图分类号：

O656 [有机分析];

学科分类号：

070302 ; 081704 ;

摘要：

Piperidine absorbs CO2 and H2O contents in air to form a molecular complex: piperidium-1-piperidinecarboxylate-H2O. The structure of the complex was characterized by FT-IR and NMR. The complex is stabilized via five hydrogen bonds between the three components, N…O electrostatic interaction and O…O interaction (electron transfer) between1-piperidinecarboxylate and H2O. Through electron transfer from the carbamate ion, the oxy- gen atom in water molecule is strongly negatively charged and the O—H bond is considerably shorter than that of free water mole- cule. The formation of the molecular complex is a reversible process and will decompose upon heating. The mechanism of formation and stabilization is further investigated herein.

引用

页码：93 / 97

页数：5

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JIANG Huiming ZHANG Shubiao JIN Rongchao MA Yunhua College of Life Science Dalian Nationalities University Dalian Liaoning China Department of Chemistry Carnegie Mellon University Pittsburgh PA USA .

WuhanUniversityJournalofNaturalSciences, 2007, (06) :1099-1104

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