The bicyclic and tricyclic ladder compounds consisting of two oligosiloxane chains bridged by Si-Si rungs were synthesized by the condensation of 1,2-dihydroxy-1,1,2,2-tetraisopropyldisilane and 1,1,2,2-tetrachloro-1,2-diisopropyldisilane with aniline. The structures of these compounds were confirmed by X-ray crystallography.