Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.jorganchem.2005.05.010
Title: Rhenium carbonyl complexes with monodentate-coordinated diphosphines: Activation of terminal phosphino groups towards amine-oxide oxidation
Authors: Fan, W.
Zhang, R.
Leong, W.K. 
Chu, C.K.
Yan, Y.K.
Keywords: Amine-oxide
Carbonyl
Equatorial isomer
Monodentate diphosphines
Phosphine-oxide complexes
Rhenium
Issue Date: 15-Aug-2005
Citation: Fan, W., Zhang, R., Leong, W.K., Chu, C.K., Yan, Y.K. (2005-08-15). Rhenium carbonyl complexes with monodentate-coordinated diphosphines: Activation of terminal phosphino groups towards amine-oxide oxidation. Journal of Organometallic Chemistry 690 (16) : 3765-3773. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jorganchem.2005.05.010
Abstract: Terminal phosphino groups of [Re2(CO)9(η 1-P-P)] (P-P = diphosphines) are activated towards oxidation by Me3NO. The respective reactions of Me3NO with [Re 2(CO)9{η1-P(o-anisyl)2(CH 2)3PPh2}], [Re2(CO) 9{η1-PPh2(CH2) 3P(o-anisyl)2}] and [Re2(CO) 9(η1-trans-PPh2CH=CHPPh2)] were studied to investigate the mechanism of this oxidation. The results are consistent with an intramolecular pathway involving a cyclic intermediate, without exchange of the coordinated and terminal phosphino groups. A mechanism which involves an interaction of the terminal phosphino group with a carbonyl ligand is proposed. In sharp contrast to eq-[Re2(CO) 9(η1-P-P)] (P-P = Ph2P(CH2) nPPh2, n = 1-6), eq-[Re2(CO) 9(η1-trans-PPh2CHCHPPh2)] appears to be indefinitely stable towards equatorial → axial isomerization at room temperature, thus, allowing its crystal structure to be determined. © 2005 Elsevier B.V. All rights reserved.
Source Title: Journal of Organometallic Chemistry
URI: http://scholarbank.nus.edu.sg/handle/10635/94724
ISSN: 0022328X
DOI: 10.1016/j.jorganchem.2005.05.010
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