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Issue 22, 2012
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A bisphosphonite calix[5]arene ligand that stabilizes η6arene 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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Supplementary files

Article information


Submitted
01 Mar 2012
Accepted
02 Apr 2012
First published
26 Apr 2012

Dalton Trans., 2012,41, 6677-6682
Article type
Paper

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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