Phosphine and diphosphine complexes of tungsten(VI) oxide tetrafluoride
Phosphine and diphosphine complexes of tungsten(VI) oxide tetrafluoride
The reaction of [WOF4(MeCN)] with the diphosphines, Me2PCH2CH2PMe2 or o-C6H4(PMe2)2, in anhydrous Et2O produced high yields of [WOF4(diphosphine)], the X-ray crystal structures of which reveal seven-coordinate pentagonal bipyramidal molecules with axial O/F. In contrast, the reaction of [WOF4(MeCN)] and PMe3 forms the six-coordinate [WOF4(PMe3)]. These unusual W(VI) complexes have been characterised by microanalysis, IR, 1H, 19F{1H} and 31P{1H} NMR spectroscopy. The second-order 19F{1H} and 31P{1H} NMR spectra of the [WOF4(diphosphine)] have been analysed. Similar complexes do not form with the other o-phenylene-linked bidentate ligands, o-C6H4(PPh2)2, o-C6H4(AsMe2)2 or o-C6H4(SMe)2.
tungsten, oxide-fluoride, phosphine, diphosphine, x-ray structures, 19F and 31P NMR
74-79
Emsley, James W.
9d219d5e-28c0-4a8c-bf3d-1f78cd707c17
Levason, William
e7f6d7c7-643c-49f5-8b57-0ebbe1bb52cd
Reid, Gillian
37d35b11-40ce-48c5-a68e-f6ce04cd4037
De Luca, Giuseppina
8152f554-4aa6-42bf-af23-c0d74db9f69e
Zhang, Wenjian
1f80ac5e-d4c2-4720-b19e-be700cd411e7
May 2017
Emsley, James W.
9d219d5e-28c0-4a8c-bf3d-1f78cd707c17
Levason, William
e7f6d7c7-643c-49f5-8b57-0ebbe1bb52cd
Reid, Gillian
37d35b11-40ce-48c5-a68e-f6ce04cd4037
De Luca, Giuseppina
8152f554-4aa6-42bf-af23-c0d74db9f69e
Zhang, Wenjian
1f80ac5e-d4c2-4720-b19e-be700cd411e7
Emsley, James W., Levason, William, Reid, Gillian, De Luca, Giuseppina and Zhang, Wenjian
(2017)
Phosphine and diphosphine complexes of tungsten(VI) oxide tetrafluoride.
Journal of Fluorine Chemistry, 197, .
(doi:10.1016/j.jfluchem.2017.02.007).
Abstract
The reaction of [WOF4(MeCN)] with the diphosphines, Me2PCH2CH2PMe2 or o-C6H4(PMe2)2, in anhydrous Et2O produced high yields of [WOF4(diphosphine)], the X-ray crystal structures of which reveal seven-coordinate pentagonal bipyramidal molecules with axial O/F. In contrast, the reaction of [WOF4(MeCN)] and PMe3 forms the six-coordinate [WOF4(PMe3)]. These unusual W(VI) complexes have been characterised by microanalysis, IR, 1H, 19F{1H} and 31P{1H} NMR spectroscopy. The second-order 19F{1H} and 31P{1H} NMR spectra of the [WOF4(diphosphine)] have been analysed. Similar complexes do not form with the other o-phenylene-linked bidentate ligands, o-C6H4(PPh2)2, o-C6H4(AsMe2)2 or o-C6H4(SMe)2.
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Accepted/In Press date: 25 February 2017
e-pub ahead of print date: 20 March 2017
Published date: May 2017
Keywords:
tungsten, oxide-fluoride, phosphine, diphosphine, x-ray structures, 19F and 31P NMR
Organisations:
Chemistry, FIMS
Identifiers
Local EPrints ID: 407595
URI: http://eprints.soton.ac.uk/id/eprint/407595
ISSN: 0022-1139
PURE UUID: c8516910-e518-43e0-82b6-61fd5e965fa9
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Date deposited: 16 Apr 2017 16:59
Last modified: 16 Mar 2024 02:44
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Author:
James W. Emsley
Author:
Giuseppina De Luca
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