Conformational and structural studies of isopropylamine from temperature dependent Raman spectra of xenon solutions and ab initio calculations

► Vibrational data indicate the presence of two conformers of nearly equal intensity. ► The enthalpy difference going from the trans form to the gauche form is 113 ± 11 cm−1. ► The heavy atom and NH2 structural parameters have been determined. ► Compete vibrational assignments have been obtained for both conformers.