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Issue 34, 2017
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Heteroleptic nickel(ii)–diNHC complexes and an unusual ‘reverse’ carbene-transfer reaction to silver(i)

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Abstract

A series of rare [NiX2(MeCCprop)] complexes bearing the cis-chelating benzimidazole-derived dicarbene ligand MeCCprop and varying anionic coligands (2, X = N3; 3, X = NCS; 4, X = I; 5, X = O2CCF3) have been prepared and coligand dependent structural and spectroscopic features have been evaluated. This study also revealed an unusual ‘reverse’ carbene transfer reaction from nickel to silver giving the disilver species [Ag2X2(μ–κ2-MeCCprop)] (6, X = OAc; 7, X = O2CCF3). A preliminary catalytic study of two representative NiII diNHC complexes in the aqueous and phosphine-free Suzuki–Miyaura coupling reaction of aryl halides is reported as well. These reactions provide good yields of coupling products, but do not require inert conditions.

Graphical abstract: Heteroleptic nickel(ii)–diNHC complexes and an unusual ‘reverse’ carbene-transfer reaction to silver(i)

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Article information


Submitted
26 May 2017
Accepted
01 Aug 2017
First published
01 Aug 2017

This article is Open Access

Dalton Trans., 2017,46, 11318-11326
Article type
Paper

Heteroleptic nickel(II)–diNHC complexes and an unusual ‘reverse’ carbene-transfer reaction to silver(I)

H. V. Huynh, C. H. M. Koh and V. H. Nguyen, Dalton Trans., 2017, 46, 11318
DOI: 10.1039/C7DT01912B

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    [Original citation] - Published by The Royal Society of Chemistry.

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