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Polarized infrared spectra of lithium hydrogen phthalate monohydrate single crystal

Authors
Journal
Journal of Molecular Structure
0022-2860
Publisher
Elsevier
Publication Date
Volume
291
Identifiers
DOI: 10.1016/0022-2860(93)85037-u
Disciplines
  • Physics

Abstract

Abstract The polarized infrared spectra of single crystals of lithium hydrogen phthalate monohydrate (LHPM) have been measured at room and low (about 27 K) temperature. The hydrogen bond modes and the internal vibrations of the phthalate ion are discussed in relation to the crystal structure. A broad absorption was observed due to the antisymmetric stretching mode of the very short intramolecular hydrogen bonds, but it was not possible to distinguish features pertaining to the two different intramolecular hydrogen bonds. Evidence was found for strong coupling of the CO stretching vibrations within the chelate ring of the phthalate anion.

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