The pentavalent silicon in the title compound is coordinated by four oxygen atoms. The N→Si dative bond is rather short (2.079(2) Å). The crystal structure is partially disordered: carbon atoms attached to nitrogen appear on both sides of the Si−O(eq)−C, N plane with a population of 0.8 and 0.2, respectively. The change of the configuration around silicon and nitrogen, as a function of the N→Si dative bond length, is reviewed for several silatrane structures. Structural data suggest that different extents of the distortion of the trigonal bipyra-mid around silicon for the various compounds may represent stages along the pathway of the SN2-type reaction ≡Si−X + HN≡ → ≡Si−N≡.
ASJC Scopus subject areas