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Platinum-alkyl and hydride complexes supported by a tris(phosphino)borate ligand: structural and spectroscopic studies

Thomas, J. Christopher and Peters, Jonas C. (2004) Platinum-alkyl and hydride complexes supported by a tris(phosphino)borate ligand: structural and spectroscopic studies. Polyhedron, 23 (2-3). pp. 489-497. ISSN 0277-5387. doi:10.1016/j.poly.2003.11.036. https://resolver.caltech.edu/CaltechAUTHORS:20140730-150704289

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Abstract

The synthesis and characterization of platinum-methyl and hydride complexes containing the ligand [PhBP_3] ([PhBP_3]=[PhB(CH_2PPh_2)_3]^−) are described. Metalation of [PhBP_3][TBA] (1[TBA], [TBA]=[nBu_4N]^+) with platinum methyl precursors provided the corresponding phosphine methyl platinum species [PhBP_3]PtMe_3 (2) and [[κ^2-PhBP_3]PtMe_2][TBA] (3). The reactivity of octahedral 2 and square planar 3 are discussed, and their X-ray diffraction structures are reported. Octahedral Pt(IV) 2 was found to be very thermally and chemically robust. In contrast, the square planar Pt(II) complex 3 demonstrated reactivity at both the platinum center and the unbound phosphine. The reaction of 3 with one equivalent of elemental sulfur provided the corresponding phosphine-sulfide [[κ^2-PhB(CH_2P(S)Ph_2)(CH_2PPh_2)_2]PtMe_2][TBA] (4). Similarly, the reaction of 3 with one equivalent of BH_3 • SMe_2 generated the borane-protected complex [[κ^2-PhB(CH_2P(BH_3)Ph_2)(CH_2PPh_2)_2]PtMe_2][TBA] (5). Complex 5 was significantly less reactive than 3 to a variety of substrates under similar conditions; however, the reaction of 5 with additional BH_3 • SMe_2 resulted in the formation of the platinum(I) bridged hydride species [[κ^2-PhB(CH_2P(BH_3)Ph_2)(CH_2PPh_2)_2]Pt(μ-H)]_2[TBA]_2 (6).


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1016/j.poly.2003.11.036DOIArticle
http://www.sciencedirect.com/science/article/pii/S0277538703006831PublisherArticle
ORCID:
AuthorORCID
Peters, Jonas C.0000-0002-6610-4414
Additional Information:© 2003 Elsevier Ltd. Received 30 July 2003; Accepted 8 October 2003. Larry Henling is acknowledged for his assistance with X-ray crystallography. Joseph Duimestra is acknowledged for assistance with the protocol for [PhBP3] [TBA]. J.C.T. is grateful to the NSF and to the Moore Foundation for graduate research fellowships. The authors acknowledge financial support from the NSF (CHE-0132216) and the DOE (PECASE).
Funders:
Funding AgencyGrant Number
Gordon and Betty Moore FoundationUNSPECIFIED
NSFCHE-0132216
Department of Energy (DOE)PECASE
Subject Keywords:Zwitterions; Monoanionic ligands; Syntheses; Structures; Methyl; Hydrides
Issue or Number:2-3
DOI:10.1016/j.poly.2003.11.036
Record Number:CaltechAUTHORS:20140730-150704289
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140730-150704289
Official Citation:Thomas, J. C., & Peters, J. C. (2004). Platinum-alkyl and hydride complexes supported by a tris(phosphino)borate ligand: structural and spectroscopic studies. Polyhedron, 23(2–3), 489-497. doi: http://dx.doi.org/10.1016/j.poly.2003.11.036
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47680
Collection:CaltechAUTHORS
Deposited By: Joanne McCole
Deposited On:31 Jul 2014 15:49
Last Modified:10 Nov 2021 17:49

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