Abstract-A carbon-13 NMR study of compounds containing C=N or conjugated C=N bonds (iminoethers, saturated and unsaturated aliphatic imines, amidines, oximes, phenylhydrazones, semicarbazones) is presented. The influence of the Z / E isomerism, the substituents and the steric effects on the chemical shifts are discussed.R6surnLCe travail presente une etude par RMN de carbone-I3 de composes comportant une double liaison C=N simple et conjuguee (iminoethers, imines aliphatiques, imines ethyleniques, amidines, oximes, phenylhydrazones, semicarbazones). L'influence de la stCreoisomerie Z / E , des substituants et le r6le de l'eEet sttrique sur le deplacement chimique sont discutes.
Aus den Propargylsilanen (I) erhält man nach Metallierung mit Trimethylchlorsilan die Bis‐silyl‐Verbindungen (III), die auch aus isomeren Propargylsilanen (IV) erhalten werden können.
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