Abstract
Absorption studies, frequency 625–4000 cm −1 , of glycine and triglycine sulfate and their deuterated analogs together with corresponding reflection and dichroic absorption data for variously oriented crystal sections of triglycine sulfate are reported. These not only confirm what is presently known about the crystal structure of triglycine sulfate, but also give other valuable 'information. A comparison of the spectra of triglycine sulfate and triglycine selenate reveals differences in force constants and bonding of the sulfate and selenate ions. Exposure to X-rays and heating above the Curie point (47°C) produce certain changes in the electrical properties of triglycine sulfate, but the infrared characteristics are only very slightly affected.
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