High yield syntheses of stable, singly bonded Pd2(6+) compounds

F Albert Cotton; Igor O Koshevoy; Pascual Lahuerta; Carlos A Murillo; Mercedes Sanaú; M Angeles Ubeda; Qinliang Zhao

doi:10.1021/ja0656595

High yield syntheses of stable, singly bonded Pd2(6+) compounds

J Am Chem Soc. 2006 Oct 25;128(42):13674-5. doi: 10.1021/ja0656595.

Authors

F Albert Cotton¹, Igor O Koshevoy, Pascual Lahuerta, Carlos A Murillo, Mercedes Sanaú, M Angeles Ubeda, Qinliang Zhao

Affiliation

¹ Department of Chemistry, Laboratory for Molecular Structure and Bonding, P.O. Box 30012, Texas A&M University, College Station, Texas 77842-3012, USA. cotton@tamu.edu

PMID: 17044680
DOI: 10.1021/ja0656595

Abstract

A general method for the syntheses of dipalladium compounds having a singly bonded Pd26+ core and the formula R,S-cis-Pd2(C6H4PPh2)2(O2CR)2Cl2 is described. When the alkyl group in the carboxylate ligands is an electron donating group, the compounds are stable and the yields high. The Pd-Pd distances for the diamagnetic compounds with R = CF3 and CMe3 are 2.5434(4) and 2.5241(9) A, respectively. Calculations at the DFT level suggest that the electronic configuration is sigma2pi4delta2delta*2pi*4. These represent rare examples of palladium(III) compounds.