B. V. Reddy, G. Rao
Mar 1, 1994
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Influential Citations
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Journal
Vibrational Spectroscopy
Abstract
Abstract A zero-order normal coordinate analysis was made for both in-plane and out-of-plane vibrations of 1-bromo-2,4-difluorobenzene, 1-bromo-3,4-difluorobenzene, 1-bromo-3,5-difluorobenzene and 1,3-dichloro-4-fluorobenzene by transferring the force constants from two sources, namely monohalogenated nitrobenzenes (Set I) and dihalogenated benzenes (Set II). The observed and calculated frequencies agree with an average error of 14.7 and 13.5 cm −1 using Set I and Set II force constants, respectively. On the basis of the results obtained unambiguous vibrational assignments of all the fundamentals of the four molecules were made. Several assignments suggested by earlier workers have been revised.