- Silicon-Bridged Bi- and Tridentate Lewis Acidic Host Systems
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Connecting multiple organic spacer functions via silicon core units leads to various organosilanes that are excellently suited as backbones for poly-Lewis acids (PLAs). Using ethynyl spacer groups, rigid bis- and tris-dioxabenzoborole (BCat)-substituted P
- Sch?fer, Fabian,Lamm, Jan-Hendrik,Neumann, Beate,Stammler, Hans-Georg,Mitzel, Norbert W.
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p. 3265 - 3271
(2021/07/21)
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- NMR STUDY (1H, 13C and 29Si) OF (CH3)4-xSi(CH=CH2)x COMPOUNDS WHERE x = 0, 1, 2, 3, 4
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The 1H, 13C and 29Si NMR spectra of the various methylvinylsilanes have been analysed with the aid of a special simulation program.From considerations of the chemical shifts and of the coupling constants 2,3J1H-1H, 1J13C-1H, 1J29Si-13C and 2J29Si-C-1H it is shown that a mesomeric-M effect from the vinyl group to the Me-Si group is important, in very good agreement with previously published PES results .The mesomeric interaction in this series is ascribed to a hyperconjugation in accordance with theoretical considerations .
- Delmulle, L.,Kelen, G. P. van der
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p. 309 - 314
(2007/10/02)
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