Synthesis and structural characterization of cycloborasiloxanes: the X-ray crystal structures of cyclo-1,3,3,5,5-pentaphenyl-1-bora-3,5-disiloxane and cyclo-1,3,3,5,7,7-hexaphenyl-1,5-dibora-3,7-disiloxane

Article abstract of DOI:10.1016/0022-328X(92)85022-O

Cycloborasiloxanes 2 (1) and RB<(OSiPh2)2O> containing eight- and six-membered rings, respectively, have been synthesized by the reaction of RB(OH)2 with 1,1,3,3-tetraphenyl-1-3-dihydroxy-1,3-disiloxane or diphe