(Thio)(silyl)carbene and (seleno)(silyl)carbene gold() complexes from the reaction of bis(methylene)-λ-sulfane and bis(methylene)-λ-selane with chloro(dimethylsulfide)gold()

• Published in: Dalton transactions : an international journal of inorganic chemistry 2020-06, Vol.49 (23), p.7688-7691
• Main Authors: Sugamata, Koh, Urao, Yukiko, Minoura, Mao
• Format: Article
• Language: English
• ISSN: 1477-9226; 1477-9234
• DOI: 10.1039/d0dt00967a

The dinuclear (thio)(silyl)carbene and (seleno)(silyl)carbene gold( i ) complexes 1 and 2 were obtained from the reaction of two equivalents of AuCl(SMe 2 ) with the stable bis(methylene)-λ 4 -chalcogenanes 3 and 4 , respectively. The reaction proceeds under elimination of the chlorosilane moiety of 3 and 4 . Complexes 1 and 2 were characterized by spectroscopic and X-ray diffraction (XRD) analyses. The 13 C NMR signals for the carbene centers of 1 (309 ppm) and 2 (345 ppm) are by more than 150 ppm downfield shifted relative to those for other known (NHC)AuCl complexes. These results indicate that (chalcogeno)(silyl)carbenes, like (amino)(silyl)carbenes, belong to the push-spectator family of carbenes. The dinuclear (thio)(silyl)carbene and (seleno)(silyl)carbene gold( i ) complexes 1 and 2 were obtained from the reaction of two equivalents of AuCl(SMe 2 ) with the stable bis(methylene)-λ 4 -chalcogenanes 3 and 4 , respectively.