Abstract
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 language | English (US) |
---|---|
Pages (from-to) | 148-157 |
Number of pages | 10 |
Journal | Low Temperature Physics |
Volume | 32 |
Issue number | 2 |
DOIs | |
State | Published - Feb 2006 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)