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Published July 23, 2007 | public
Journal Article

Terminal Fe^I-N_2 and Fe^(II)···H-C Interactions Supported by Tris(phosphino)silyl Ligands

Abstract

Taking hold: Monoanionic tris(phosphino)silyl ligands ([SiP6R-3]=[(2-R-2PC-6H-4)-3Si]−) stabilize unusual five-coordinate Fe^I complexes. The silane [SiP^(Ph)_3]H reacts with mesityliron(II) to give [(SiP^(Ph)_3)Fe^(II)Mes], which displays a C—H agostic interaction. Treatment with HCl and reduction affords the terminally bonded Fe^I—N_2 complex [(SiP^(Ph)_3)FeN_2] (see scheme; structures show only donor atoms of [SiP^(Ph)_3]), which yields hydrazine under protolytic conditions.

Additional Information

© 2007 Wiley-VCH Verlag GmbH & Co. Manuscript Received: 17 Mar 2007. Article first published online: 28 Jun 2007. This work was supported by the NIH (GM 070757) and BP (MC^2 program). N.P.M. was supported by an NSF Graduate Research Fellowship, and M.T.W. by a Moore Foundation Fellowship. Larry Henling and Dr. Angelo DiBilio are acknowledged for crystallographic assistance and EPR assistance, and Prof. John Bercaw assisted with a Toepler pump analysis.

Additional details

Created:
August 22, 2023
Modified:
October 26, 2023