Neue anorganische Ringsysteme. 28. Das Spiro[4,3]-tetrasilatetrazaoktan-System

Novel Inorganic Ring Systems. 28. The Spiro4,3]-tetrasilatetrazaoctane System According to scheme 3 the spiro4,3]-tetrasilatetrazaoctanes B are formed with high yields. Their properties are described. Physical and analytical data as well as some results for the proof of structure can be taken from tables 1? 3. The very easy proceeding hydrolysis of B 2 leads to A 8 (scheme 4). On the contrary hydrolysis of A 1 is difficult to realize and results in A 3 as the main product (scheme 2).