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Issue 8, 2001
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Ligand-assisted O-dealkylation of bis(bipyridyl) ruthenium(II) phosphine-ether complexes

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Abstract

The preparation and characterization of three [Ru(bpy)2(POR-P,O)](PF6)2 complexes are reported where POR = 2-methoxyphenyldiphenylphosphine in 1, 2-ethoxyphenyldiphenylphosphine in 2 and 2-methoxyethyldiphenylphosphine in 3. Complexes 1 and 2 undergo ligand-assisted O-dealkylation by the same weakly basic phosphines, a reaction typically observed for complexes containing highly basic phosphines with multiple ether substituents. The electron deficiency of the Ru(II) centre in these complexes is likely responsible for how readily they are dealkylated to yield the aryloxide complexes. Complex 3 is not susceptible to ligand-assisted dealkylation, primarily because the lower steric demand of its phosphine-ether ligand permits the thermodynamically favoured direct attack of phosphines at the Ru centre.

Graphical abstract: Ligand-assisted O-dealkylation of bis(bipyridyl) ruthenium(II) phosphine-ether complexes [ ]

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Publication details

The article was received on 07 Nov 2000, accepted on 21 Feb 2001 and first published on 30 Mar 2001


Article type: Paper
DOI: 10.1039/B008931L
J. Chem. Soc., Dalton Trans., 2001, 1278-1283

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    Ligand-assisted O-dealkylation of bis(bipyridyl) ruthenium(II) phosphine-ether complexes

    C. W. Rogers, B. O. Patrick, S. J. Rettig and M. O. Wolf, J. Chem. Soc., Dalton Trans., 2001, 1278
    DOI: 10.1039/B008931L

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