SYNTHESIS AND PROPERTIES OF PARTIALLY SI- FLUORINATED ARYLTRISILANES

Partially fluorinated aryltrisilanes FnSi3Ar8-n, FnHmSi3Ar8-n-m or FnC lHmSi3Ar7-n-m (Ar = phenyl and/or p-tolyl) have been synthesized from Ph(3)SiSiPh(2)SiPh(3), Ph(3)SiSiClHSiPh(3), p-Tol(3)SiSiPh(2)SiPh(3), p-Tol(3)SiSiPh(2)Sip-Tol(3) and Ph(3)SiSip-Tol(2)SiPh(3) by applying c ombinations of the reaction sequences CF3SO3H/LiX (X = F, Cl) or CF3SO 3H/LiAlH4. The trifluoromethanesulfonyloxy-substituted trisilanes used as intermediates have been identified with Si-29 NMR spectroscopy. Th e title compounds have been characterized with IR and Si-29 NMR spectr oscopy as well as with elemental analyses.