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from the Cambridge Crystallographic Data Centre via www.ccdc.cam. ac, These data can be obtained free of charge, pp.1443340-7601, 1579. ,
(19) Transient 2-silaketenes, Z. Anorg. Allg. Chem. J. Am. Chem. Soc. J. Am. Chem. Soc. J. Am. Chem. Soc. J. Am. Chem. Soc, vol.61920, issue.13221, pp.865-6240, 1988. ,
Geometries were optimized using the M06-2X density functional with the 6-31G(d) basis set. The energy of each stationary point was recomputed using the 6-311+G(d,p) basis set. The reported Gibbs free energies (298.15 K and 1 atm) were computed from the total energies obtained with the 6-311+G(d,p) basis set and zeropoint , thermal, and entropy corrections computed with the 6-31G(d) basis set. (25) See the Supporting Information. (26) Peng, 27) Peng, pp.15100-1668, 1970. ,