A siloxane oligomer of the following formula is provided. This siloxane can increase the hydrophobicity and/or the lipophobicity of a surface of a solid substrate and/or self-propel when deposited in solution on a surface of a solid substrate.

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A method for preparing a reaction product including an aryl-functional silane includes sequential steps (1) and (2). Step (1) is contacting, under silicon deposition conditions, (A) an ingredient including (I) a halosilane such as silicon tetrahalide and optionally (II) hydrogen (H.sub.2); and (B) a metal combination comprising copper (Cu) and at least one other metal, where the at least one other metal is selected from the group consisting of gold (Au), cobalt (Co), chromium (Cr), iron (Fe), magnesium (Mg), manganese (Mn), nickel (Ni), palladium (Pd), and silver (Ag); thereby forming a silicon alloy catalyst comprising Si, Cu and the at least one other metal. Step (2) is contacting the silicon alloy catalyst and (C) a reactant including an aryl halide under silicon etching conditions.

Disclosed is a compound of formula (I): (R.sup.1R.sup.2N)Si.sub.nH.sub.2n+1 (I), wherein subscript n is an integer from 3 to 9; and each R.sup.1 and R.sup.2 independently is (C.sub.1-C.sub.6)alkyl, (C.sub.3-C.sub.6)cycloalkyl, (C.sub.2-C.sub.6)alkenyl, (C.sub.2-C.sub.6)alkynyl, or phenyl; or R.sup.1 is H and R.sup.2 is (C.sub.1-C.sub.6)alkyl, (C3-C6)cycloalkyl, (C2-C6)alkenyl, (C2-C6)alkynyl, or phenyl; or R.sup.1 and R.sup.2 are bonded together to be -R.sup.1a R.sup.2a wherein -R.sup.1a-R.sup.2a- is (C.sub.2-C.sub.6)alkylene. Also disclosed are a method of making, intermediates useful therein, method of using, and composition comprising the compound of formula (I).

Disclosed is a compound of formula (I): (R.sup.1 R.sup.2N)Si.sub.nH.sub.2n(NR.sup.3R.sup.4) (I) wherein subscript n, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined herein. Also disclosed are a method of making, intermediates useful therein, method of using, and composition comprising the compound of formula (I).

A method for producing an organohalosilanes comprising reacting an organic compound comprising a halogen-substituted or unsubstituted alkane, a halogen-substituted or unsubstituted alkene, or an aromatic compound and at least one hydridohalosilane of formula R.sub.nSiH.sub.mX.sub.4-m-n, wherein each R is independently C-.sub.1-C-.sub.1 4 hydrocarbyl or C-.sub.1-C-.sub.1 4 hologen-substituted hydrocarbyl, X is fluoro, chloro, bromo, or iodo, n is 0, 1, or 2, m is 1, 2 or 3, and m+n=1, 2 or 3, in the presence of a heterogeneous catalyst comprising an oxide of one or more of the elements Sc, Y, Ti, Zr, Hf, B, Al, Ga, In, C, Si, Ge, Sn, or Pb, at a temperature greater than 100 C., and at a pressure of at least 690 kPa, to produce a crude reaction product comprising the organohalosilane.

Chemical processes comprise selectively synthesizing diisopropylamino-disilanes and reduction of chloride in aminosilanes, and the compositions comprise the diisopropylamino-disilanes and at least one reaction by-product prepared thereby. The diisopropylamino-disilanes are diisopropylamino-pentachlorodisilane and diisopropylamino-disilane.

Disclosed is a compound of formula (I): (R.sup.1 R.sup.2N)Si.sub.nH.sub.2n(NR.sup.3R.sup.4) (I) wherein subscript n, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined herein. Also disclosed are a method of making, intermediates useful therein, method of using, and composition comprising the compound of formula (I).

Disclosed is a compound of formula (I): (R.sup.1R.sup.2N)Si.sub.nH.sub.2n+1 (I), wherein subscript n is an integer from 3 to 9; and each R.sup.1 and R.sup.2 independently is (C.sub.1-C.sub.6)alkyl, (C.sub.3-C.sub.6)cycloalkyl, (C.sub.2-C.sub.6)alkenyl, (C.sub.2-C.sub.6)alkynyl, or phenyl; or R.sup.1 is H and R.sup.2 is (C.sub.1-C.sub.6)alkyl, (C.sub.3-C.sub.6)cycloalkyl, (C.sub.2-C.sub.6)alkenyl, (C.sub.2-C.sub.6)alkynyl, or phenyl; or R.sup.1 and R.sup.2 are bonded together to be R.sup.1a-R.sup.2a wherein R.sup.1a-R.sup.2a is (C.sub.2-C.sub.6)alkylene. Also disclosed are a method of making, intermediates useful therein, method of using, and composition comprising the compound of formula (I).

Chemical processes comprise selectively synthesizing diisopropylamino-disilanes and reduction of chloride in amin-osilanes, and the compositions comprise the diisopropylamino-disilanes and at least one reaction by-product prepared thereby. The diisopropylamino-disilanes are diisopropylamino-pentachlorodisilane and diisopropylamino-disilane.