1

3-Bis (trichlorosilyl) cyclohexance was obtained by addition HSiCl3 to cyclohexa-diene-1

3 in the presence of H2PtCl6·6H2O in isopropyl alcohol. The new compound was ethanolysed and methylated to form di-methyl tetra-ethoxy disilyl

tri-methyl tri-etKoxy disilyl and tetra-methyl di-ethoxy disilyl cyclohexanes.The di- to tetra-functional monomers were hydrolysed by hydrochloric acid in ether. The di-functional monomers yielded cyclic dimer similar to octamethylcyclotetrasiloxane

and the tri-functional monomer

a cyclic tetramer

while in thecase of tetra-functional monomer

a cyclic octamer was obtained.All these compounds have not been reported in literature.