Dissociation dynamics of fluorinated alkyl iodides at 222 and 236 nm

I-*(P-2(1/2)) quantum yield has been measured for a series of fluorinated a lkyl iodides at two different wavelengths in the blue wing of their A-band. The yields are much higher for the fluorinated iodides than their correspo nding alkyl iodide analogs at 222 as well as 236 nm. The I* quantum yield a t 222 nm is, in general, larger than that at 236 nm which is opposite to wh at has been found in normal alkyl iodide dissociation in the A-band. This d ifference in fluorinated iodides has been explained by invoking the partici pation of the B-band states in the dissociation dynamics. (C) 2001 Elsevier Science B.V. All rights reserved.