Complex Formation and Rearrangement Reactions of the Phosphine Hydride Anions [OsH3(PPh3)3]- and [IrH2(PPh3)3]-

Guilera, G.; McGrady, G.S.; Steed, J.W.; Jones, A.L.

Abstract

[OsH4(PPh3)3] (1) reacts with KH in THF in the presence of 18-crown-6 to form [K(THF)(18-crown-6)][OsH3(PPh3)3] (2), characterized by NMR spectroscopy and X-ray crystallography; cation−anion contact is achieved through three Os−H···K moieties. In contrast, [IrH3(PPh3)3] (6) reacts with KH and 18-crown-6 in THF with redistribution of ligands to produce the known bis-phosphine complex [K(18-crown-6)][IrH4(PPh3)2] (7). This reaction has been followed by NMR spectroscopy, and [IrH2(PPh3)3]- has been identified as a likely intermediate. K[OsH3(PPh3)3] (3) reacts with Bun3SnCl to form the tin-osmium complex [OsH3(SnBun3)(PPh3)3] (8), characterized by NMR spectroscopy and X-ray crystallography. The molecule contains a seven-coordinate osmium center, which can be described approximately as a distorted fac-[OsH3(PPh3)] arrangement, with the SnBun3 moiety capping the OsH3 face.

Citation

Guilera, G., McGrady, G., Steed, J., & Jones, A. (2006). Complex Formation and Rearrangement Reactions of the Phosphine Hydride Anions [OsH3(PPh3)3]- and [IrH2(PPh3)3]-. Organometallics, 25(1), 122-127. https://doi.org/10.1021/om050391w

• Journal Article Type: Article
• Online Publication Date: Nov 22, 2005
• Publication Date: 2006-01
• Journal: Organometallics
• Print ISSN: 0276-7333
• Electronic ISSN: 1520-6041
• Publisher: American Chemical Society
• Peer Reviewed: Peer Reviewed
• Volume: 25
• Issue: 1
• Pages: 122-127
• DOI: https://doi.org/10.1021/om050391w
• Public URL: https://durham-repository.worktribe.com/output/1543619