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Double HCl elimination and configuration change in the square-planar palladium complex trans-[{(Ph2PC6H4CONH)(2)C6H4}PdCl2] under Suzuki conditions: Isolation and molecular structure of cis-[{(Ph2PC6H4CON)(2)C6H4}Pd]
Auteur(s)
Date de parution
2006
In
Inorganic Chemistry Communications
Vol.
12
No
9
De la page
1151
A la page
1154
Résumé
The trans-configurated square-planar palladium complex trans-[{(Ph2PC6H4CONH)(2)C6H4}PdCl2] (1), which catalyzes the Suzuki cross coupling of 4-bromotoluene with phenylboronic acid, was found to react with potassium carbonate in toluene at 90 degrees C (Suzuki conditions) to give cis-[{(Ph2PC6H4CON)(2)C6H4}Pd] (2). The single-crystal X-ray structure analysis of 2 reveals the square-planar palladium center to be in a cis configuration. The trans-cis configuration change at palladium is possible because of the elimination of two HCl equivalents in the conversion of 1 into 2. Both complexes 1 and 2 show approximately the same catalytic performance for Suzuki reactions, suggesting 2 to be the catalytically active species. (C) 2006 Elsevier B.V. All rights reserved.
Type de publication
Resource Types::text::journal::journal article
