Spectroscopic investigations and structural confirmation studies on thiourea.

The Fourier transform infrared and Raman spectra of thiourea have been studied in the region 4000-400 and 4000-10 cm(-1), respectively. A complete vibrational analysis on the molecular structure of thiourea has been made on the basis of C(2upsilon) point group symmetry. The validity of the vibrational assignments on the structure of thiourea is supported by evaluating the molecular constants and the potential energy distribution.