Abstract: A method of preparing a cyclohexasilane compound from trichlorosilane is provided. The method includes contacting trichlorosilane with a reagent composition to produce a compound containing a tetradecahalocyclohexasilane dianion, such as a tetradecachlorocyclohexasilane dianion. The reagent composition typically includes (a) tertiary polyamine ligand; and (b) a deprotonating reagent, such as a tertiary amine having a pKa of at least about 10.5. Methods of converting the tetradecahalocyclohexasilane dianion-containing compound to cyclohexasilane or a dodecaorganocyclohexasilane are also provided.

Abstract: A method of preparing a cyclohexasilane compound from trichlorosilane is provided. The method includes contacting trichlorosilane with a reagent composition to produce a compound containing a tetradecahalocyclohexasilane dianion, such as a tetradecachlorocyclohexasilane dianion. The reagent composition typically includes (a) tertiary polyamine ligand; and (b) a deprotonating reagent, such as a tertiary amine having a pKa of at least about 10.5. Methods of converting the tetradecahalocyclohexasilane dianion-containing compound to cyclohexasilane or a dodecaorganocyclohexasilane are also provided.

Abstract: The specification discloses catalyzing hydrosilation reactions with nickel dispersed in an inert reaction medium, where the nickel is prepared by reacting a nickel halide with an alkali metal. The hydrosilation reaction and the preparation of the nickel dispersion are presently conducted in the presence of ultrasound.

Abstract: The method of causing or promoting chemical changes involving the step of subjecting reactants to ultrasonic energy as a key treatment step, including methods of: (1) reducing aryl halides by treating a mixture of aryl halide and lithium aluminum hydride in a liquid ether medium; (2) making cycloaddition products by treating a mixture of alpha, alpha'-dibromo-ortho-xylene, zinc powder and a dienophile in a liquid ether medium; (3) making beta-hydroxyesters by treating a mixture of alpha-bromoethylacetate, a carbonyl compound, zinc dust and an iodine enhancer in a liquid ether medium; (4) making tetramesityldisilene involving treating a solution of bis(mesityl)dichlorosilane in a liquid ether medium, with lithium present in the medium; and (5) saturating organic compounds having capability of reduction at carbon-carbon bonds involving treating a mixture of an organic compound having capability of reduction at carbon-carbon bonds, and formic acid, in an alcohol medium with palladium-on-carbon present as a catal

Abstract: A method of hydrosilating non-aromatic carbon to carbon pi bonds comprising exposing a mixture of a compound having a said pi bond and a silane having silanic hydrogen to a platinum metal catalyst, and subjecting the mixture to ultrasonic energy while exposed to said catalyst.