Hydrogen-deuterium exchange of the anionic Group VIB transition-metal hydrides. Convenient, in situ deuterium transfer reagents Academic Article uri icon

abstract

  • The facile exchange of hydrogen for detuerium in the anionic group 6B carbonyl hydrides HM(CO)4L′ (M = Cr, W; L = CO, P(OMe)3) has been studied in THF with CH3OD, D20, and CH3CO2D. This has provided a synthesis of the deuterides, DM(CO)4L−, as well as a convenient in situ source of deuteride reducing reagents for organic halides. A number of such reductions are described, using 2H NMR to demonstrate both selectivity and stereospecificity for certain systems. The carbonyl region of the infrared spectra of the hydrides is not affected by deuteration of the hydrides, suggesting that the M-H or M-D vibrational modes are not coupled significantly to CO vibrations in these hydrides. The mechanism of the H/D exchange and of a related H2 elimination reaction is discussed. It is felt that both reactions proceed via an anion-stabilized dihydride. © 1984, American Chemical Society. All rights reserved.

published proceedings

  • Journal of the American Chemical Society

author list (cited authors)

  • Gaus, P. L., Kao, S. C., Darensbourg, M. Y., & Arndt, L. W

citation count

  • 27

complete list of authors

  • Gaus, PL||Kao, SC||Darensbourg, MY||Arndt, LW

publication date

  • August 1984