Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Transition metal cooperative Lewis pairs using platinum(0) piphosphine Mmonocarbonyl complexes as Lewis bases

Mistry, Krishna, Pringle, Paul G., Sparkes, Hazel A. and Wass, Duncan F. 2020. Transition metal cooperative Lewis pairs using platinum(0) piphosphine Mmonocarbonyl complexes as Lewis bases. Organometallics 39 (3) , pp. 468-477. 10.1021/acs.organomet.9b00568
Item availability restricted.

[img] PDF - Accepted Post-Print Version
Restricted to Repository staff only until 3 February 2021 due to copyright restrictions.

Download (1MB)

Abstract

The platinum(0)-diphosphine complex [Pt(CO)(L1)] (3, where L1 = 1,2-C6H4(CH2PtBu2)2) and its diphosphinite analogue [Pt(CO)(L2)] (11, where L2 = 1,2-C6H4(OPtBu2)2) act as Lewis bases in conjunction with the main group Lewis acid B(C6F5)3 to form frustrated or cooperative Lewis pairs. These systems activate dihydrogen, ethene/carbon monoxide, and phenylacetylene, leading to products that depend on the exact ligand used. These subtle changes to ligand structure influence reactivity, most notably in hydrogen activation where a variety of dinuclear species of the type [(diphos)Pt(μ-H)3Pt(diphos)]+ or [(diphos)Pt(μ-H)(μ-CO)Pt(diphos)]+ are observed. Activation of ethene with the Lewis pair leads to a previously reported coupling product and the mechanism is probed. The basicity of [Pt(CO)(L)] is demonstrated by deprotonation of phenylacetylene. Preliminary studies with an analogous palladium complex [Pd(CO)(L1)] 33 suggests related chemistry may be exploited for this metal. These results provide further examples of cooperative Lewis pair behavior in which one of the components is based on a transition metal complex.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Publisher: American Chemical Society
ISSN: 0276-7333
Funders: EPSRC
Date of First Compliant Deposit: 13 February 2020
Date of Acceptance: 21 January 2020
Last Modified: 10 Mar 2020 22:31
URI: http://orca.cf.ac.uk/id/eprint/129642

Actions (repository staff only)

Edit Item Edit Item

Downloads

Downloads per month over past year

View more statistics