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Cyclopalladated complexes containing 2-C 6 R 4 PPh 2 ligands (R = H, F): one-electron electrochemical reduction leading to metal–carbon σ-bond cleavage via palladium( i )

Kar, Gopa, Privér, Steven H., Jones, Lathe A., Guo, Si-Xuan, Torriero, Angel A. J., Bond, Alan M., Bennett, Martin A. and Bhargava, Suresh K. 2015, Cyclopalladated complexes containing 2-C 6 R 4 PPh 2 ligands (R = H, F): one-electron electrochemical reduction leading to metal–carbon σ-bond cleavage via palladium( i ), Dalton transactions, vol. 44, no. 7, pp. 3367-3377, doi: 10.1039/C4DT03268C.

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Title Cyclopalladated complexes containing 2-C 6 R 4 PPh 2 ligands (R = H, F): one-electron electrochemical reduction leading to metal–carbon σ-bond cleavage via palladium( i )
Author(s) Kar, Gopa
Privér, Steven H.
Jones, Lathe A.
Guo, Si-Xuan
Torriero, Angel A. J.ORCID iD for Torriero, Angel A. J. orcid.org/0000-0001-8616-365X
Bond, Alan M.
Bennett, Martin A.
Bhargava, Suresh K.
Journal name Dalton transactions
Volume number 44
Issue number 7
Start page 3367
End page 3377
Total pages 11
Publisher Royal Society of Chemistry
Place of publication Cambridge, Eng.
Publication date 2015
ISSN 1477-9226
1477-9234
Summary Three new ortho -metallated palladium complexes, [Pd(O,O’-hfacac)(κ2-2-C6F4PPh2)] (11), [Pd2(O,O’hfacac)2(μ-2-C6F4PPh2)2](12) and [Pd(O,O’-hfacac)(κC-2-C6F4PPh2)(PPh3)] (13) (hfacac = hexafluoroace-tylacetonate), have been prepared and fully characterised. The electrochemical reductions of complexes 11–13, together with those of other cyclopalladated complexes containing 2C6R4PPh2 ligands (R = H, F) were studied by cyclic, rotating disk and microelectrode voltammetry. Evidence for the one-electron reduction of [PdI(κ2-2-C6F4PPh2)(PPh2Fc)] (6) was obtained from coulometric analysis, although the product is unstable and undergoes further chemical processes. Preparative electro-reduction of [Pd2(μ-Br)2(κ2-2-C6F4PPh2)2] (7) in CH2Cl2 causes reductive cleavage of its Pd–C σ-bonds and formation of the complex [PdBr2{PPh2(2-C6F4H)}2](14); possible mechanisms are discussed.
Language eng
DOI 10.1039/C4DT03268C
Field of Research 030604 Electrochemistry
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2015, Royal Society of Chemistry
Persistent URL http://hdl.handle.net/10536/DRO/DU:30077024

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