Organometallics
Organometallics
5 years ago

A Pd Halide Cluster from 1964: Pd6Cl8 Capped by Ring-Opened C3Ph3 Ligands from Oxidative Addition of Cyclopropenium Ions

A Pd Halide Cluster from 1964: Pd6Cl8 Capped by Ring-Opened C3Ph3 Ligands from Oxidative Addition of Cyclopropenium Ions
Christian Jandl, Karl Öfele, Alexander Pöthig
On the basis of a protocol from 1964 on the reaction of K2PdCl4, triphenylcyclopropenium chloride, and ethylene, the product was now identified as a Pd6Cl8 cluster capped by μ3-η1:η1:η3-C3Ph3 ligands, [C3Ph3]2[Pd6Cl8(C3Ph3)2]. The ligand is formed in a two-step reaction involving first the partial reduction of Pd(II) to Pd(0) by ethylene and second the ring-opening oxidative addition of the cyclopropenium ion, leading to a rare binding mode with one allyl and two alkyl bonds. Although the structure was not recognized at that time, this compound represents the first isolated organometallic Pd cluster compound.

Publisher URL: http://dx.doi.org/10.1021/acs.organomet.7b00525

DOI: 10.1021/acs.organomet.7b00525

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