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Issue 35, 2011
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CSC-pincer versus pseudo-pincer complexes of palladium(ii): a comparative study on complexation and catalytic activities of NHC complexes

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Abstract

Three thioether bridged diimidazolium dibromides with different steric and electronic properties have been synthesized as precursors to carbene-based CSC pincer ligands. Palladation afforded CSC Pd(II) pincer complexes for bulky and electron rich ligand systems, whereas the least donating ligand led to the formation of a pseudo-pincer complex. All complexes have been fully characterized by multinuclei NMR spectroscopies, ESI mass spectrometry and X-ray diffraction analysis. The catalytic activities of pincer versus pseudo-pincer complexes have been compared in the intermolecular hydroamination of alkynes with anilines as well.

Graphical abstract: CSC-pincer versus pseudo-pincer complexes of palladium(ii): a comparative study on complexation and catalytic activities of NHC complexes

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Supplementary files

Article information


Submitted
18 Feb 2011
Accepted
24 Mar 2011
First published
27 Apr 2011

Dalton Trans., 2011,40, 8788-8795
Article type
Paper

CSC-pincer versus pseudo-pincer complexes of palladium(II): a comparative study on complexation and catalytic activities of NHC complexes

D. Yuan, H. Tang, L. Xiao and H. V. Huynh, Dalton Trans., 2011, 40, 8788
DOI: 10.1039/C1DT10269A

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