Abstract
Based on crystal structure data, the torsional molecular motions (in solids) in four substituted benzoic acids are discussed in the light of nuclear (35Cl) quadrupole resonance results. The torsional frequencies show anonlinear variation with temperature and compare reasonably well with the Raman data on the parent compound. The average temperature coefficient of these motions has been evaluated by Brown's method as well as using Bayer's model. The torsional frequencies in the ortho-chloro substituted compounds do not vary smoothly with temperature.
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More From: Journal of the Chemical Society, Faraday Transactions 2
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