Synonyms: 51685-13-3;AC1L3M0F;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-(trimethyl-;(1,1,2,2,4,4-hexamethyl-1,2,4-trisilolane-3,5-diylidene)bis(trimethyl-lambda5-phosphane);Phosphorane, (1,1,2,2,4,4-hexamethyl-1,2,4-trisilacyclopentane-3,5-diylidene)bis(trimethyl-