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The infrared spectra of formamide in the vapour and liquid states, and in solutions in CHCl3, CCl4, CH3CN, H2O, and D2O, and of sodium formamide and formamide hydrochloride were observed between 650 cm—1 and 3800 cm—1. The effect of association on the bands was examined, where possible, in solution and in the vapor state. These infrared results were taken in conjunction with the available Raman data and an assignment of the frequencies to the fundamental modes of vibration of the molecule has been made. Thermodynamic functions have been calculated.
J. C. Evans (Thu,) studied this question.