Thermal and photochemical reactivity of Os(HNO)(CO)(Cl)2(PPh3)2: Evidence for photochemical HNO generation

INOR 891

Jon Marhenke1, Crisjoe Joseph2, Tim J. Dunn, dunn.tim@gmail.com1, Marley Z. Corliss1, and Peter C. Ford, ford@chem.ucsb.edu2. (1) Department of Chemistry, California State University Chico, 400 West First Street, Chico, CA 95929-0210, (2) Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, CA 93106
FTIR studies of the thermal and photochemical reactions of Os(HNO)(CO)(Cl)2(PPh3)2 are described. Though Os(HNO)(CO)(Cl)2(PPh3)2 is relatively stable, it readily reacts when irradiated to form multiple products, principally a metal-carbonyl species and N2O, the decomposition product of HNO. The relative yields of products varied depending on whether or not excess CO was present. A model is presented that includes initial photochemical release of HNO from Os(HNO)(CO)(Cl)2(PPh3)2 as the principal but not exclusive photoreaction.
 

General Inorganic Chemistry
1:30 PM-5:20 PM, Wednesday, August 22, 2007 BCEC -- 212, Oral

Division of Inorganic Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007