ylsilyl)-1,1,1,3,3,4,4,6,6,6-decamethylhexasilane, C22H66Si10, is a po
lysilane in which the longest chain is made up of six Si atoms and bra
nching occurs at the second and fifth Si atoms. Each of the two centra
l Si atoms is bonded to a tris(trimethylsilyl)silyl group in an anti a
rrangement. Bond lengths and angles are sufficiently close to normal t
o indicate that the molecule is relatively unstrained.