A silyliumylidene cation stabilized by an amidinate ligand and 4-dimethylaminopyridine.

  title={A silyliumylidene cation stabilized by an amidinate ligand and 4-dimethylaminopyridine.},
  author={Hui-Xian Yeong and Hong-Wei Xi and Yongxin Li and Kok Hwa. Lim and Cheuk-Wai So},
  volume={19 35},
The synthesis and reactivity of a silyliumylidene cation stabilized by an amidinate ligand and 4-dimethylaminopyridine (DMAP) are described. The reaction of the amidinate silicon(I) dimer [LSi:]2 (1; L = PhC(NtBu)2) with one equivalent of N-trimethylsilyl-4-dimethylaminopyridinium triflate [4-NMe2C5H4NSiMe3]OTf and two equivalents of DMAP in THF afforded [LSi(DMAP)]OTf (2). The ambiphilic character of 2 is demonstrated from its reactivity. Treatment of 2 with 1 in THF afforded the… 

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