WHAT IS CLAIMED IS:

1. A method of making diorganosilane, said method comprising the step of contacting in a reaction mixture an effective amount of a Lewis acid catalyst with a hydridosiloxane comprising at least one terminal SiH group and at least one siloxane bond, to provide a product mixture comprising at least one diorganosilane, and at least one oligosiloxane.

2. The method of claim 1, wherein said hydridosiloxane comprises structure (I),

R^{1}

(I) Z O_{1}Z_{2}-Si H

R^{2}

wherein R , R , are independently in each instance a C_{1}-C_{20} aliphatic radical, a C_{3}-C_{40} aromatic radical, or a C_{3}-C_{40} cycloaliphatic radical, and Z is a siloxane represented by structure (II),

(II) M_{a}M'_{b}D_{e}D'_{d}T_{e}T'_{f}Q_{g}

wherein the subscripts a, b, c, d, e, f and g are zero or a positive integer and wherein M has the formula:

R^{3}_{3}Si0_{1/2},

M' has the formula:

(Y)R^{4}_{2}SiOi_{/2},

D has the formula:

R^{5}_{2}Si0_{2}/_{2},

D' has the formula: (Y)R^{6}SiO_{272},

T has the formula:

R^{7}Si0_{3/2},

T' has the formula:

(Y)SiO_{3/2},

and Q has the formula:

SiO_{472},

wherein R^{3}, R^{4}, R^{5}, R^{6} and R^{7} are independently in each instance a C_{1}-C_{20} aliphatic radical, a C_{3}-C_{40} aromatic radical, or a C_{3}-C_{40} cycloaliphatic radical and Y represents hydrogen.

3. The method of claim 1, wherein said diorganosilane has structure (III),

R^{1}

(III) H Si H

R^{2}

wherein R^{1} and R^{2} are independently in each instance a C_{1}-C_{20} aliphatic radical, a C_{3}-C_{40} aromatic radical, or a C_{3}-C_{40} cycloaliphatic radical.

4. The method of claim 2, wherein at least one of R^{1}, R^{2}, R^{3}, R^{4}, R^{5}, R^{6}and R^{7} is selected from the group consisting of methyl, ethyl, n-propyl, isopropyl, butyl, pentyl, hexyl, octyl, decyl, dodecyl, 1,1,1-trifluoropropyl, phenyl, . naphthyl, benzyl, cyclohexyl, and methylcyclohexyl.

5. The method of claim 1, wherein the catalyst is used in an amount in a range of from about 1 ppm to about 50000 ppm by weight based on a total weight of the reaction mixture.

6. The method of claim 1 , wherein said catalyst has formula (IV),

(IV) MR^{8}_{x}X_{y}

wherein M is B, Al, Ga, In or Tl; each R is independently an aromatic radical having from 5 to 14 carbon atoms, said catalyst comprising at least one electron- withdrawing group, X is a halogen atom, x is 1, 2, or 3; and y is 0, 1 or 2; with the proviso that x + y =3.

7. The method of claim 6, wherein R comprises at least one electron withdrawing moiety selected from the group consisting of halogen, -CF_{3}, -NO_{2}, and

-CN.

8. The method of claim 7, wherein R comprises at least two halogen atoms.

9. The method of claim 1, wherein said catalyst has formula (V),

(V) BR^{8}_{x}X_{y}

wherein each R^{8} is independently an aromatic radical having from 5 to 14 carbon atoms, said catalyst comprising at least one electron-withdrawing group, X is a halogen atom, x is 1, 2, or 3; and y is 0, 1 or 2; with the proviso that x + y =3.

10. The method of claim 9, wherein R comprises at least one electron withdrawing moiety selected from the group consisting of halogen, -CF_{3}, -NO_{2}, and -CN.

11. The method of claim 10, wherein R comprises at least two halogen atoms.

12. The method of claim 9, wherein the said catalyst is selected from the group consisting of boron compounds having structures (VI) to (XXI).

(X) (C_{6}F_{4})(C_{6}F_{5})_{2}B

(XI) (C_{6}F_{4})_{3}B

(XII) (C_{6}F_{5})BF_{2}

(XIII) BF(C_{6}Fs)_{2}

(^{XIV}> B(C_{6}Fs)_{3}

(^{XV}> B(C_{6}H_{5})(C_{6}Fs)_{2}

(XVI) BCl_{2}(C_{6}H_{5})

(XVII) BCl(C_{6}Hs)_{2}

(XVIII) [C_{6}H_{4}(m-CF_{3})]_{3}B

(XIX) [C_{6}H_{4}(p-CF_{3})]_{3}B

(XX) [C_{6}H_{2}-2,4,6-(CF_{3})_{3}]_{3}B

(XXI) [C_{6}H_{2}-3,4,5-(CF_{3})_{3}]_{3}B

13. The method of claim 9, wherein the said catalyst is tris(pentafluorophenyl)borane.

14. The method of claim 1, wherein the reaction mixture further comprises at least one solvent.

15. The method of claim 1, wherein said contacting comprises heating at a temperature in a range of from about 0°C to about 150°C.

16. The method of claim 1, wherein the diorganosilane is isolated from the product mixture by distillation.

17. A method of making dialkylsilane, said method comprising the step of contacting in a reaction mixture an effective amount of B(C_{6}Fs)_{3} with a hydridosiloxane comprising structure (XXII),

R^{9}

(XXII) Z O_{1}Z_{2}-Si H

R 10

to provide a product mixture comprising at least one dialkylsilane, and at least one oligosiloxane; wherein R^{9} and R^{1} are independently in each instance a C_{1}-C_{1O} alkyl group and Z is a siloxane represented by structure (II),

(II) M_{a}M'_{b}D^'_{d}T_{e}T'_{f}Q_{g}

wherein the subscripts a, b, c, d, e, f and g are zero or a positive integer and wherein M has the formula:

R^{3}_{3}Si0_{1/2},

M' has the formula:

(Y)R^{4}_{2}Si0_{1/2},

D has the formula:

R^{5}_{2}Si0_{2/25}

D' has the formula:

(Y)R^{6}SiO_{272},

T has the formula:

R^{7}SiO_{372},

T' has the formula: (Y)SiO_{3/2},

and Q has the formula:

SiO_{472},

wherein R^{3}, R^{4}, R^{5}, R^{6} and R^{7} are independently in each instance a monovalent C_{1}-C_{20} aliphatic radical, a monovalent C_{3}-C_{40} aromatic radical, or a monovalent C_{3}-C_{40} cycloaliphatic radical and Y represents hydrogen.

18. The method of claim 17, wherein said dialkylsilane has structure (XXIII),

(XXIII)

wherein R^{9} and R^{10} are independently in each instance a Ci-C_{10} alkyl group.

19. A method of making dimethylsilane, said method comprising the step of contacting in a reaction mixture an effective amount of B(C_{6}Fs)_{3} catalyst with a hydridosiloxane comprising structure (XXIV),

wherein Z is a siloxane represented by structure (II),

(II) M_{a}M'_{b}D_{e}D'_{d}iyT_{f}Q_{g}

wherein the subscripts a, b, c, d, e, f and g are zero or a positive integer and wherein M has the formula:

R^{3}_{S}SiO_{172},

M' has the formula:

(Y)R^{4}_{2}Si0_{1/2},

D has the formula:

R^{5}_{2}SiO_{2/2},

D' has the formula:

(Y)R^{6}Si0_{2/2},

T has the formula:

R^{7}SiO_{372},

T' has the formula:

(Y)SiO_{372},

and Q has the formula:

SiO_{472},

wherein R^{3}, R^{4}, R^{5}, R^{6} and R^{7} are independently in each instance a C_{1}-C_{20} aliphatic radical, a C_{3}-C_{40} aromatic radical, or a C_{3}-C_{40} cycloaliphatic radical and Y represents hydrogen.