“…Raman spectra of glycine and C-deuterated glycine in various ionic states have been measured in H20 and D20 solutions (108). Vibrational assignments and normal coordinate analyses have been made for X-methyl acetamide on the basis of new Raman and infrared measurements (270). A few systems containing X-heterocyclic ring systems have been studied, among these are pyrimidine (303) and pyrazine (304) in the liquid and solid states, including deuterated species, and also molten pyridine X-oxide (236) and piperidine for which a chair conformation is indicated (207).…”