(Thio)(silyl)carbene and (seleno)(silyl)carbene gold(i) complexes from the reaction of bis(methylene)-λ4-sulfane and bis(methylene)-λ4-selane with chloro(dimethylsulfide)gold(i)

Koh Sugamata; Yukiko Urao; Mao Minoura

doi:10.1039/d0dt00967a

(Thio)(silyl)carbene and (seleno)(silyl)carbene gold(i) complexes from the reaction of bis(methylene)-λ⁴-sulfane and bis(methylene)-λ⁴-selane with chloro(dimethylsulfide)gold(i)

Dalton Trans. 2020 Jun 21;49(23):7688-7691. doi: 10.1039/d0dt00967a. Epub 2020 Jun 2.

Authors

Koh Sugamata¹, Yukiko Urao, Mao Minoura

Affiliation

¹ College of Science, Department of Chemistry, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo, 171-8501, Japan. sugamata@rikkyo.ac.jp.

PMID: 32484467
DOI: 10.1039/d0dt00967a

Abstract

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(SMe₂) with the stable bis(methylene)-λ⁴-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 ¹³C 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.