Reaction of the Cage-like Silicic Acid Derivative (CH3)2HSi]8Si8O20 with Unsaturated Organic Compounds By 29Si, 1H, and 13C NMR investigations were shown that the eight HSi?groups of the double four-ring silicic acid derivative (CH3)2HSi]8Si8O20 react with the following unsaturated compounds: vinylcyclohexene, allyl glycidyl ether, methyl methacrylate, octadecene-1, and styrene. The resulting oily products are soluble in organic solvents. The compounds were characterized by the chemical shifts of the 29Si, 1H, and 13C NMR signals. Their formulae are C6H9(CH2)2Si(CH3)2]8Si8O20, CH3OOCCH(CH3)CH2Si(CH3)2]8Si8O20, CH3(CH2)17Si(CH3)2]8Si8O20 and C6H5(CH2)2Si(CH3)2]8Si8O20, and C6H5CH(CH3)Si(CH3)2]8 Si8O20, respectively. Mainly the addition reactions do not follow the Markovnikov rule.
