Ringkontraktionsreaktionen von Octamethylcyclotetrasilazanen zu silylsubstituierten Cyclotrisilazanen

Ring Contractions of Octamethylcyclotetrasilazanes to Silyl‐Substituted Cyclotrisilazanes Reaction of the mono‐ and dilithium derivatives of bis(fluorsilyl)‐substituted cyclotetrasilazanes with fluorosilanes and fluoroboranes leads to ring contraction with formation of cyclotrisilazanes ( 1 – 8 ). The isomerisation is proved by the crystal structure determination of 1 and by NMR spectroscopy.