DARSTELLUNG UND NMR-SPEKTROSKOPISCHE UNTERSUCHUNGEN VON N‚N'-DIPHENYL-CYCLODISILAZANEN

Several N,N'-diphenylcyclodisilazanes substituted by methyl and phenyl groups at the silicon atoms were synthesized by pyrolysis or via the appropriate lithium-organic compounds. The structures were corroborated by 1H-, 13C-and 29Si-NMR spectroscopy. The assignments of the 13C-NMR spectra were completed and the effect of the change of the substituents on the silyl-methyl 1H-NMR chemical shifts as well as on the 29Si chemical shifts was investigated