Kinetics of the photolysis of benzenetricarbonylchromium(0) in chloroform

Authors

Leslianna Federici
Patrick E. Hoggard, Santa Clara UniversityFollow

Document Type

Article

Publication Date

2000

Publisher

Old City Publishing/De Gruyter

Abstract

In contrast to the photolysis of Cr(CO)₃(C₆H₆) in nonhalogenated solvents, in which the products are CrL(CO)₂(C₆H₆) in the presence of a donor L, or Cr(CO)₆ and C₆H₆ if no donor is present, the photo-reaction in chloroform yields CrCl₃. No significant portion of the reaction occurs through absorption of 254nm light by CHCl₃• The quantum yield is 1.4, consistent with a mechanism in which several radicals are formed upon chlorination of the chromium, which then cause further decomposition of the reactant. In 24% CCl₄, the reaction still occurs primarily through the excited state metal complex, but there is a solvent-initiated contribution, which is more significant the lower the reactant concentration. The quantum yield for the solvent-initiated pathway is 0.3 in 24% CCL₄.

Comments

Copyright © Walter de Gruyter GmbH. Reprinted with permission.

Recommended Citation

Leslianna Federici and Patrick E. Hoggard, “Kinetics of the photolysis of benzenetricarbonylchromium(0) in chloroform”, Inorg. React. Mech. 2, 179-184 (2000).