First O−H−N Hydrogen Bond with a Centered Proton Obtained by Thermally Induced Proton Migration
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- 10 July 2001
- journal article
- research article
- Published by Wiley in Angewandte Chemie International Edition in English
- Vol. 40 (14) , 2651-2654
- https://doi.org/10.1002/1521-3773(20010716)40:14<2651::aid-anie2651>3.0.co;2-2
Abstract
Within a range of 0.1 Å, the H atom in the O−H−N hydrogen bond of the adduct 4-methylpyridine⋅pentachlorophenol could be shifted by a simple adjustment of temperature (see scheme). At approximately 90 K the H atom is exactly centered between the O and the N atoms, as could be shown by stepwise monitoring by using variable-temperature single-crystal neutron diffraction.Keywords
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