Stereoelectronic Structure and Alternating Intramolecular Coordination O → Si in N-(Trifluorosilylmethyl)succinimide

Pentacoordinate organosilicon compounds— molecular structure and stereodynamic behavior of (trifluorosilylmethyl)succinimide and (trifluorosilylmethyl)glutarimide

“…As in the case of other dragonoids [1], in going from crystal to C 6 H 6 solution of 1, these bands are shifted to higher wave numbers (965, 889, and 820 cm −1 , respectively X-ray diffraction analysis was recorded on a "SYNTEX P2 1 " monochromated diffractometer. N-(Trimethoxysilylmethyl)succinimide and N-(trifluorosilylmethyl)succinimide were obtained by a described method [24,25].…”

Kinetic modeling study of the group-transfer polymerization of alkyl crotonates using a silicon Lewis acid catalyst

“…This result suggests that, in both adduct A and adduct B, the silicon atom of the silicon LA catalyst and the lone pair on the oxygen atoms of the carbonyl groups interact via the transfer of an electron because the bond lengths between them are sufficiently short. 22,23 Therefore, this result can be considered as evidence for the presence of adduct B and adduct A. In addition, because the bond lengths between the silicon and oxygen atoms of adduct B are longer than those between the silicon and oxygen atoms of adduct A, the monomer activation degree of adduct B is lower than that of adduct A.…”

Structure of N-(1-silatranylmethyl) and N-(trimethoxysilyl-methyl) derivatives of nitrogen-containing heterocycles according to data of NMR, IR, and UV spectroscopy

“…The N-(trimethoxysilylmethyl) and N-(silatranylmethyl) derivatives of imidazole (1, 9), 3,5-dimethylpyrazole (2, 10), 2-methylindole (3,11), benzimidazole (4, 12), 1,2,4-triazole (5, 13), succinimide (14), glutarimide (15), and phthalimide (8, 16) were obtained by methods described previously [5][6][7].…”

“…The close values of the chemical shifts of the 29 Si (-77 to -81 ppm) and 15 N nuclei (-350 to -356 ppm) correspond to the insignificant differences in the length of the transannular N→Si bond in the silatrane framework in compounds 1, 2, 4, and 5 [11][12][13]. This indicates that in these molecules the electron-withdrawing inductive effects of the Het and HetCH 2 substituents are extremely close.…”