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Issue 22, 2012
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A bisphosphonite calix[5]arene ligand that stabilizes η6 arene coordination to palladium

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Abstract

Treatment of a bis(phenylphosphonite)calix[5]arene ligand with either palladium(II) chloride or 1,5-cyclooctadieneplatinum(II) chloride yields square planar metal complexes in which the two phosphorus atoms bind cis to the MCl2 moiety (M = Pd, Pt). Chloride was removed from the palladium complex to open a coordination site at the metal for catalysis. The chloride removal resulted in a rare and unexpected η6 coordination of an arene to the metal. The reaction is reversible upon addition of tetra-n-butyl ammonium chloride.

Graphical abstract: A bisphosphonite calix[5]arene ligand that stabilizes η6 arene coordination to palladium

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Publication details

The article was received on 01 Mar 2012, accepted on 02 Apr 2012 and first published on 26 Apr 2012


Article type: Paper
DOI: 10.1039/C2DT30491K
Citation: Dalton Trans., 2012,41, 6677-6682
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    A bisphosphonite calix[5]arene ligand that stabilizes η6 arene coordination to palladium

    B. E. Rios, P. Sood, Y. Klichko, M. Koutha, D. Powell and M. Lattman, Dalton Trans., 2012, 41, 6677
    DOI: 10.1039/C2DT30491K

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