(1,1,2,2,4,4-hexamethyl-5-trimethylphosphoranylidene-1,2,4-trisilolan-3-ylidene)-trimethylphosphorane;(1,1,2,2,4,4-hexamethyl-5-trimethylphosphoranylidene-1,2,4-trisilolan-3-ylidene)-trimethyl-phosphorane;51685-13-3;Phosphorane, (1,1,2,2,4,4-hexamethyl-1,2,4-trisilacyclopentane-3,5-diylidene)bis(trimethyl-;Phosphorane,(1,1,2,2,4,4-hexamethyl-1,2,4-trisilacyclopentane-3,5-diylidene)bis[trimethyl-
(1,1,2,2,4,4-hexamethyl-5-trimethylphosphoranylidene-1,2,4-trisilolan-3-ylidene)-trimethylphosphorane