From large 12-membered macrometallacycles to ionic (NHC)2M+Cl- type complexes of gold and silver by modulation of the N-substituent of amido-functionalized N-heterocyclic carbene (NHC) ligands

Inorganic Chemistry
Manoja K SamantarayPrasenjit Ghosh

Abstract

A series of structurally diverse gold and silver complexes extending from ionic (NHC) 2M(+)Cl(-) (M=Au, Ag) type complexes to large 12-membered macrometallacycles have been prepared by the appropriate modification of the N-substituent of amido-functionalized N-heterocyclic carbenes. Specifically, the ionic, [1-(R)-3-{ N-(t-butylacetamido)imidazol-2-ylidene}]2M(+)Cl(-), (R=t-Bu, i-Pr; M=Au, Ag; 1b, 1c, 2b, 2c) complexes, were obtained in case of the N- t-butyl substituent of the amido-functionalized sidearm while 12-membered macrometallacycles, [1-(R)-3-{N-(2,6-di i-propylphenylacetamido)imidazol-2-ylidene}]2M2, (R=t-Bu, i-Pr; M=Au, Ag; 3b, 3c, 4b, 4c) were obtained in case of the 2,6-di i-propylphenyl N-substituent. These structurally diverse complexes of gold and silver were, however, prepared employing a common synthetic pathway involving the reactions of the imidazolium chloride salts (1a, 2a, 3a, 4a) with Ag2O to give the silver complexes (1b, 2b, 3b, 4b) and which, when treated with (SMe2)AuCl, gave the gold complexes (1c, 2c, 3c, 4c). Detailed density functional theory studies of 1b, 1c, 2b, 2c, 3b, 3c, 4b, and 4c were carried out to gain insight about the structure, bonding, and the electronic properties of these complex...Continue Reading

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Citations

Jun 19, 2015·Inorganic Chemistry·Stefanie KobialkaMarianne Engeser
Apr 25, 2012·Journal of the American Chemical Society·Raffaele CredendinoLuigi Cavallo
Feb 16, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Tobias DiehlMarianne Engeser
Feb 25, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Chandrakanta DashPrasenjit Ghosh
May 25, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Alex John, Prasenjit Ghosh
May 5, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Fuwei LiT S Andy Hor
Jul 8, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Alex JohnPrasenjit Ghosh
Aug 25, 2011·Chemical Society Reviews·Hubert Schmidbaur, Annette Schier
May 8, 2010·Dalton Transactions : an International Journal of Inorganic Chemistry·Xiaoyan HanT S Andy Hor
Feb 13, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·Abbas Raja NaziruddinWen-Shu Hwang
Aug 20, 2009·Dalton Transactions : an International Journal of Inorganic Chemistry·Kenji MatsumotoTaro Tsubomura
Apr 14, 2009·Chemical Reviews·Joseph C Y LinIvan J B Lin
Jul 8, 2009·Chemical Reviews·Khadijah M HindiWiley J Youngs

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