Reaction kinetics of coordinatively unsaturated iron carbonyls formed on gas-phase excimer laser photolysis of Fe(CO)5

Robert J. Ryther, Eric Weitz*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

76 Scopus citations

Abstract

The reactions of species produced on gas-phase excimer laser photolysis of Fe(CO)5 have been followed by transient infrared spectroscopy employing a diode laser probe. The initial photoproducts formed on 193-nm photolysis are identified as Fe(CO)2 and a product that is most likely Fe(CO). Both Fe(CO)2 and Fe(CO)3 are produced on 248-nm photolysis. Photolysis at 351 nm leads to the production of both Fe(CO)3 and Fe(CO)4. Species best assigned as excited states of Fe(CO)3 and Fe(CO)4 are observed to form as initial photoproducts following 248- and 351-nm photolysis, respectively. The magnitudes of the rate constants for reaction of the various coordinatively unsaturated metal carbonyls formed in this study with parent Fe(CO)5 or CO (summarized in Table I) are consistent with the hypothesis that spin-allowed reactions will be rapid while spin-disallowed reactions will be considerably slower. To provide further data in testing this hypothesis, the reaction of Fe(CO)4 with both O2 and H2 has been measured.

Original languageEnglish (US)
Pages (from-to)9841-9852
Number of pages12
JournalJournal of physical chemistry
Volume95
Issue number24
DOIs
StatePublished - 1991

ASJC Scopus subject areas

  • Engineering(all)
  • Physical and Theoretical Chemistry

Fingerprint

Dive into the research topics of 'Reaction kinetics of coordinatively unsaturated iron carbonyls formed on gas-phase excimer laser photolysis of Fe(CO)<sub>5</sub>'. Together they form a unique fingerprint.

Cite this