RAMAN SPECTRA OF MOLECULAR CRYSTALS AT LOW TEMPERATURES
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Date
1964
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Ohio State University
Abstract
A new technique for growing good quality molecular crystals suitable for Raman studies at low temperatures has been developed. Crystals of about 1/2 inch diameter and up to 2 inches in length are grown from the melt around a copper rod which is in thermal contact with a refrigerant. Descriptions of liquid helium and nitrogen cryostats for use with the Cary 81 spectrometer will be presented. The Raman spectra of crystals of $NH_{3}, SO_{2}, HCl, HBr$ and $CH_{4}$, grown in this way, will be shown, and their interpretation in terms of crystal field theory briefly discussed.
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Author Institution: Department of Chemistry, Princeton University