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Issue 1, 2013
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Novel phospholyl(diphenylphosphino)methane-ruthenium complexes: unexpected non-assisted cis to trans isomerization of [RuCl22-P–P′)2]

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Abstract

Using the unsymmetrical P–P′ phospholyl(phosphino)methane ligand, complex cis-[RuCl22-P–P′)2] is easily prepared from [RuCl2(DMSO)4]. The two phosphole-phosphorus atoms lie in the trans position to the two cis-chloro ligands. This complex slowly isomerizes spontaneously at 20 °C to the trans-[RuCl22-P–P′)2] diastereoisomer where the two phosphole moieties are mutually trans, as well as the two chloro ligands and the two Ph2P moieties. DFT calculations show that this non-classical cistrans isomerisation process requires a 3 kcal mol−1 energy and involves the decoordination of a phosphole arm.

Graphical abstract: Novel phospholyl(diphenylphosphino)methane-ruthenium complexes: unexpected non-assisted cis to trans isomerization of [RuCl2(κ2-P–P′)2]

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The article was received on 03 Sep 2012, accepted on 15 Oct 2012 and first published on 07 Nov 2012


Article type: Paper
DOI: 10.1039/C2DT32032K
Citation: Dalton Trans., 2013,42, 75-81
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    Novel phospholyl(diphenylphosphino)methane-ruthenium complexes: unexpected non-assisted cis to trans isomerization of [RuCl22-P–P′)2]

    D. H. Nguyen, J. Daran, S. Mallet-Ladeira, T. Davin, L. Maron, M. Urrutigoïty, P. Kalck and M. Gouygou, Dalton Trans., 2013, 42, 75
    DOI: 10.1039/C2DT32032K

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