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Tungsten(0) and rhodium(I) complexes of a series of 2-(2 '-halo)triarylphosphinines

Citation

Wallis, C and McGuinness, DS and Newman, PD and Tooze, RP and Edwards, PG, Tungsten(0) and rhodium(I) complexes of a series of 2-(2 '-halo)triarylphosphinines , Dalton Transactions, 2009, (12) pp. 2178-2184. ISSN 1477-9226 (2009) [Refereed Article]

DOI: doi:10.1039/B816507F

Abstract

A series of halo substituted triarylphosphinines have been synthesised and coordinated to tungsten(0) and rhodium(I) to give [(2-(2′-halo)- triarylphosphinine)W(CO)5] and [(2-(2′-halo)- triarylphosphinine)Rh(COD)Cl] respectively. The complexes have been examined by NMR and IR spectroscopy in an effort to elucidate the nature of the bonding between the phosphinines and the respective metal centre. The W(CO) 5(L) systems reveal restricted C-C bond rotation as evidenced by temperature-dependent 31P{1H} NMR spectra. Thermodynamic barriers to the rotation are dependent upon the nature of the halide with "G‡ values of 72.5 kJ mol-1 and 50.8 kJ mol-1 being obtained for the chloro- and fluoro-derivatives, respectively; activation barriers for the iodo- and bromo- derivatives were beyond the accessible temperature range of the NMR experiment. © 2009 The Royal Society of Chemistry.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Inorganic Chemistry
Research Field:Transition Metal Chemistry
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:McGuinness, DS (Dr David McGuinness)
ID Code:62382
Year Published:2009
Web of Science® Times Cited:8
Deposited By:Chemistry
Deposited On:2010-03-11
Last Modified:2012-03-05
Downloads:0

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