OXYGEN-EXCHANGE REACTIONS OF H2O-O-18 WITH HEXACARBONYL CATIONS OF MANGANESE AND RHENIUM uri icon

abstract

  • The reactions of [Mn(CO)6]+ and [Re(CO)6]+ with labeled water are described. The carbonyl ligands in these cationic carbonyl derivatives are found to undergo facile oxygen exchange reactions with H218O, presumably through a hydroxy-carbonyl intermediate, [M(CO)sC(0)OH], to afford [M(C6O)6-(C18O)n]+ species. In the manganese derivative (3-hydrogen transfer in the intermediate is noted with the formation of oxygen-18 enriched HMn(Cl6O)5s_n(Cl8O)n derivatives. The relative frequency for -hydrogen transfer vs. oxygen exchange was found to be dependent on the nature of the metal center, with hydrogen transfer being retarded in the more electron-rich metal carbonyl centers such as [Mn(CO)5L]+ (L = phosphine, pyridine, CH3CN) and [Re(CO)6] +. 1977, American Chemical Society. All rights reserved.

published proceedings

  • JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

author list (cited authors)

  • DARENSBOURG, D. J., & FROELICH, J. A.

citation count

  • 32

complete list of authors

  • DARENSBOURG, DJ||FROELICH, JA

publication date

  • June 1977