Phonon-driven proton transfer in 3,5-pyridine dicarboxylic acid studied by 2H, 14N, and 17O nuclear quadrupole resonance |
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Authors: | Seliger Janez Zagar Veselko |
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Institution: | Jozef Stefan Institute, Ljubljana, Slovenia. janez.seliger@fmf.uni-lj.si |
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Abstract: | Hydrogen bonding in crystalline 3,5-pyridine dicarboxylic acid has been studied by (2)H, (14)N, and (17)O nuclear quadrupole resonance. The (2)H and (17)O data show the presence of two distinct hydrogen bonds, a "normal" O-H···O bond and a short, strong N···H···O bond, with significantly different NQR parameters. In the latter, the temperature variation of the (14)N nuclear quadrupole resonance (NQR) parameters is related to the phonon-driven proton transfer in the N···H···O hydrogen bond. The temperature dependence of the N···H and H···O distances in the N···H···O hydrogen bond is extracted from the (14)N NQR data. |
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