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Regioisomerism in coordination chemistry: oxidative addition of a bifunctional ligand to palladium, stabilized with 1,2-bis(diphenylphosphino)ethane

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Abstract

A unique phenomenon of regioisomerism in coordination chemistry was discovered: the reaction of a sterically hindered o-quinone annelated with a dithiete ring with Pd2dba3 in the presence of 1,2-bis(diphenylphosphino)ethane (dppe) gave a mixture of two regioisomers: catecholate 3Cat and dithiolate 3Dit. Both isomers were isolated in crystalline form and characterized by NMR, IR and X-ray diffractometry studies. DFT calculations reveal that the 3Dit species is more thermodynamically stable than the isomer 3Cat. Isomerization of 3Cat to 3Dit in solution was observed.

Graphical abstract: Regioisomerism in coordination chemistry: oxidative addition of a bifunctional ligand to palladium, stabilized with 1,2-bis(diphenylphosphino)ethane

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Publication details

The article was received on 16 Oct 2017, accepted on 09 Nov 2017 and first published on 10 Nov 2017


Article type: Communication
DOI: 10.1039/C7DT03891G
Citation: Dalton Trans., 2017, Advance Article
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    Regioisomerism in coordination chemistry: oxidative addition of a bifunctional ligand to palladium, stabilized with 1,2-bis(diphenylphosphino)ethane

    K. A. Martyanov, V. K. Cherkasov, G. A. Abakumov, E. V. Baranov, A. S. Shavyrin and V. A. Kuropatov, Dalton Trans., 2017, Advance Article , DOI: 10.1039/C7DT03891G

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