In the title compound, C32H28Si2, the configuration at the C=C double bond
is E [-179.1 (2)degrees], and two Si atoms in diphenylsilyl and triphenylsi
lyl groups bridged by the C=C double bond [1.292 (5) Angstrom] retain the o
verall tetrahedral environment of the C and H atoms with an average Si-C bo
nd length of 1.864 (1) Angstrom and Si-H length of 1.35 (3) Angstrom.