Group Theory Applications: Infra-red Spectral Assignment

Abstract

Group theory principles were applied and the transformation of the x, y, z vectors on each atom caused by symmetry operations were observed to obtain the 3N basis vector representations é3N, of NiCl4 , Al2Cl6 and Fe(CO)5. The identified infra-red active modes and Raman active modes were then assigned to the experimental spectral frequencies by using the projection operator method.