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Low-frequency vibrational modes and temperature dependence of NQR frequencies in 1,2,4,5-tetrabromobenzene

✍ Scribed by N. Bharateswara Rao; M. Rangacharyulu; P. Venkatacharyulu; D. Premaswarup

Publisher
John Wiley and Sons
Year
1984
Tongue
English
Weight
469 KB
Volume
22
Category
Article
ISSN
0749-1581

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✦ Synopsis

A temperature variation study of the nuclear quadruple resonance (NQR) frequencies for the two resonance lines in 1,2,4,5-tetrabromobenzene was carried out in the range 77-300K. The far-infrared spectrum of 172,4,5-telrabromobenzene was recorded and the low-frequency mirational modes noted. From the nine observed frequencies, the torsional modes contributing to the change in NQR frequencies with temperature are identified by correlating the calculated values of the NQR frequencies at different temperatures with the observed values.

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