Photodissociation Pathways and Recombination Kinetics for Gas-Phase Mn2(CO)10

T. A. Seder*, Stephen P. Church, Eric Weitz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

65 Scopus citations

Abstract

Both Mn(CO)5 and Mn2(CO)9 are observed following gas-phase photolysis of Mn2(CO)10. The Mn(CO)5/Mn2(CO)9 ratio can be shifted to favor formation of Mn2(CO)9 by increasing the photolysis energy from 351 to 248 to 193 nm. Mn(CO)5 is formed with significant amounts of internal excitation. Further, as the photolysis energy increases, additional photoproducts are produced which are tentatively assigned as predominantly Mn2(CO)x species (x < 9). IR absorptions of both Mn(CO)5 and Mn2(CO)9 have been recorded and assigned in the range ~2050 to ~ 1750 cm-1. The rate constant for the reaction of two Mn(CO)5 radicals to form Mn2(CO)l0 has been measured and found to be near gas kinetic. The rate constant for the reaction of Mn2(CO)9 with CO to form Mn2(CO)l0 has been determined to be (2.4 ± 0.8) × 106 L mol-1 s-1.

Original languageEnglish (US)
Pages (from-to)7518-7524
Number of pages7
JournalJournal of the American Chemical Society
Volume108
Issue number24
DOIs
StatePublished - Jan 1 1986

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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