NMR and FT-IR analysis of new molecular complex 1-piperidine-carboxylate-piperidinium-H2O |
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| Authors: | Huiming Jiang Shubiao Zhang Rongchao Jin |
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| Institution: | (1) College of Life Science, Dalian Nationalities University, Dalian, 116600, Liaoning, China;(2) Department of Chemistry, Carnegie Mellon University, Pittsburgh, PA 15213, USA |
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| Abstract: | 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 oxygen atom in water molecule is strongly negatively charged and
the O—H bond is considerably shorter than that of free water molecule. 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.
Biography: JIANG Huiming (1972–), male, Associate professor, Ph.D., research direction: molecular complex chemistry, supramolecular
chemistry. |
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| Keywords: | piperidine molecular complex NMR FT-IR hydrogen bond electron transfer |
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