Hydrogen-bonded complexes of 2-aminopyrimidine-parabenzoquinone in an argon matrix

A. M. Plokhotnichenko, S. G. Stepanian, V. A. Karachevtsev, L. Adamowicz

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4 Scopus citations


The H-bonded complexes of 2-aminopyrimidine (NH2 Py) with parabenzoquinone (Qu) in a low-temperature argon matrix are investigated by the method of IR spectroscopy. The IR absorption spectra in the spectral range 400-3600 cm-1 are obtained for different concentration ratios of these compounds at a temperature of 11 K. The molar integrated absorption coefficients in the bands of the stretching modes of the free and H-bonded NH2 group are determined. Quantum-mechanical calculations of the IR spectra of the NH2 Py and Qu molecules and their dimers are carried out. A comparison of the experimental and calculated results permits the conclusion that NH2 Py-Qu dimers in an argon matrix have a planar structure with two weak hydrogen bonds, NH⋯O and CH⋯N.

Original languageEnglish (US)
Pages (from-to)148-157
Number of pages10
JournalLow Temperature Physics
Issue number2
StatePublished - Feb 2006

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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