15min:
ISOMERIZATION OF CH2Cl-I TO CH2ClI IN CRYOGENIC MATRICES: A STUDY ON ULTRAFAST TIMESCALE.

THOMAS J. PRESTON, MAITREYA DUTTA, BRIAN J. ESSELMAN, MICHAEL A. SHALOSKI, ROBERT J. MCMAHON AND F. FLEMING CRIM, The University of Wisconsin-Madison Department of Chemistry, 1101 University Avenue, Madison, WI, 53706; AMIABLE KALUME, LISA GEORGE AND SCOTT A. REID, Department of Chemistry, Marquette University, Milwaukee, WI, 53233.

We follow up on the previous talk on ultrafast timescale studies of the isomerization between CH2ClI and CH2Cl-I in cryogenic matrices. We establish a population of CH2Cl-I in cryogenic matrices and then pump the two lowest electronic absorption features of CH2Cl-I near 435 nm and 800 nm. Then we study the formation of CH2ClI and CH2Cl-I by probing electronic absorption features of both isomers.