A study of the ion-molecule reactions of the chromium pentacarbonyl anion with oxygen Academic Article uri icon


  • The ion-molecule reactions of the Cr(CO)5-anion with molecular oxygen are described. the Cr(CO)5-anion reacts with 02to produce the Cr(CO)3O2-and Cr(CO)3O-anions. the Cr(CO)3O2-anion reacts with neutral Cr(CO)6to reform Cr(CO)5-; whereas, the Cr(CO)3O-anion reacts with 02to form CrO3-The rate of reaction of Cr(CO)5-shows an unusual temperature dependence. the temperature-dependent reaction rate is attributed to the formation of a high-spin state of Cr(CO)5by thermal decomposition of Cr(CO)6. the mechanism of the reaction of Cr(CO)5-with oxygen is probed by (1802) isotopic labeling. the proton and electron affinities of the Cr(CO)3O2-, Cr(CO)3O-, and CrO3-anions are measured by using the bracketing method. In addition, the structures of the various anions are probed by using collision-induced dissociation (CID) methods, and the relative abundance of the CID fragment ions is used to estimate relative ligand binding energies for CO and 02. © 1987, American Chemical Society. All rights reserved.

author list (cited authors)

  • Bricker, D. L., & Russell, D. H.

citation count

  • 16

complete list of authors

  • Bricker, DL||Russell, DH

publication date

  • June 1987