Tuning the Oxidation State, Nuclearity, and Chemistry of Uranium Hydrides with Phenylsilane and Temperature: The Case of the Classic Uranium(III) Hydride Complex [(C5Me5)2U(μ-H)]2

Authors

Justin K. Pagano, University of Vermont
Jacquelyn M. Dorhout, University of Nevada, Las Vegas
Ken Czerwinski, University of Nevada, Las VegasFollow
David E. Morris, Los Alamos National Laboratory
Brian L. Scott, Los Alamos National Laboratory
Rory Waterman, University of Vermont
Jaqueline L. Kiplinger, Los Alamos National Laboratory

Document Type

Article

Publication Date

1-1-2016

Publication Title

Organometallics

Volume

35

Issue

5

First page number:

617

Last page number:

620

Abstract

This work demonstrates that the oxidation state and chemistry of uranium hydrides can be tuned with temperature and the stoichiometry of phenylsilane. The trivalent uranium hydride [(C5Me5)2U-H]x (5) was found to be comprised of an equilibrium mixture of U(III) hydrides in solution at ambient temperature. A single U(III) species can be selectively prepared by treating (C5Me5)2UMe2 (4) with 2 equiv of phenylsilane at 50 °C. The U(III) system is a potent reducing agent and displayed chemistry distinct from the U(IV) system [(C5Me5)2U(H)(μ-H)]2 (2), which was harnessed to prepare a variety of organometallic complexes, including (C5Me5)2U(dmpe)(H) (6), and the novel uranium(IV) metallacyclopentadiene complex (C5Me5)2U(C4Me4) (11). © 2016 American Chemical Society.

Language

English

Repository Citation

Pagano, J. K., Dorhout, J. M., Czerwinski, K., Morris, D. E., Scott, B. L., Waterman, R., Kiplinger, J. L. (2016). Tuning the Oxidation State, Nuclearity, and Chemistry of Uranium Hydrides with Phenylsilane and Temperature: The Case of the Classic Uranium(III) Hydride Complex [(C5Me5)2U(μ-H)]2. Organometallics, 35(5), 617-620.
http://dx.doi.org/10.1021/acs.organomet.6b00091