A modified Urey-Bradley force field for 2-chloropropane and its deuterated derivatives

A modified Urey-Bradley field has been developed for 2-chloropropane by a least-squares fit of the normal frequencies of this compound and two of its deuterated derivatives. Using this force field, the normal modes of 2-chloropropane and three of its deuterated derivatives have been calculated. This work is part of a study of the applicability of the Urey-Bradley field to the vibrations of chlorine-substituted hydrocarbons.