Fluorosilyl-substituted cyclotrisilazanes react with butyllithium to give the corresponding lithium salts. A silyl-bridged cyclotrisilazane is obtained in the reaction of a lithium salt with another fluorosilyl-substituted cyclotrisilazane. In attempts to synthesise a silane with three cyclotrisilazane substituents, ring contraction is observed and two cyclodisilazanes connected by a (SiNSiNSi)-bridge