The syntheses of three different amidinosilanes of the type Me2Si[N=C(Ph)R]2 with R = pyrrolidino, morpholino, and diethylamino and one derivative with the composition R2Si[N=C(Ph)R]2 with R = morpholino are reported. These compounds were prepared in one-pot syntheses including three consecutive steps. All products are analysed by single crystal X-ray diffraction, NMR, and Raman spectroscopy. The Si–N=C–N units of these compounds show characteristic structural features and cause a significant high field shift of the 29Si NMR signals.

中文翻译：

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一些二(脒基)甲硅烷的合成及分子结构

Me型三种不同脒基硅烷的合成2Si[N=C(Ph)R]2其中 R = 吡咯烷、吗啉代和二乙氨基以及一种组成为 R 的衍生物2Si[N=C(Ph)R]2报道了 R = morpholino。这些化合物是在一锅法合成中制备的，包括三个连续的步骤。所有产品均通过单晶 X 射线衍射、NMR 和拉曼光谱进行分析。这些化合物的 Si-N=C-N 单元显示出特有的结构特征，并导致显着的高场位移29Si NMR 信号。