193-CHLOROPROPANE - A DIRECT INVESTIGATION OF SITE-SPECIFIC BOND-CLEAVAGE IN THE INTERMEDIATE PHOTOFRAGMENT(S)(222 NM ENHANCED PHOTOLYSIS OF SELECTIVELY DEUTERATED 2)

Selectively deuterated 2-chloropropane (CD3CHClCD3) is used to investi gate photoinduced, site-specific C-H (or C-D) bond cleavage. In this s tudy, a two-color photolysis approach is employed to create an interme diate photofragment(s) and then produce a neutral H or D atom from tha t photofragment(s). On a paper site basis, the experimental results su ggest that 222 nm photolysis of an intermediate, most likely the isopr opyl radical, will preferentially induce carbon-hydrogen bond cleavage at the 2 position - not the lowest energy pathway.