Novel chlorosilylarylgermanes, method for preparation thereof and use thereof

Patent metadata

Field	Value
Publication number	US-2018346494-A1
Application number	US-201815994110-A
Country	US
Kind code	A1
Filing date	May 31, 2018
Priority date	Jun 1, 2017
Publication date	Dec 6, 2018
Grant date	—

Abstract

A novel compound chlorosilylarylgermane, a method for preparing the compound, and the use of the compound are described. A method for preparing trichlorosilyltrichlorogermane and the use of trichlorosilyltrichlorogermane are also described.

First claim

1 . A chlorosilylarylgermane of formula (I):
XGe(Y 2 )—SiCl 3   (I),
where X=Y or X=[—Ge(Y 2 )—SiCl 3 ] and each Y is independently a phenyl group.

2 . The chlorosilylarylgermane according to claim 1 , which is selected from the group consisting of trichlorosilyltriphenylgermane and 1,2-bis(trichlorosilyl)-1,1,2,2-tetraphenyldigermane.

3 . A method for preparing the chlorosilylarylgermane according to claim 1 , the method comprising:
(a) dissolving an arylchlorogermane with hexachlorodisilane in a solvent and (b) reacting in the presence of a catalyst at a temperature of 5 to 40° C., wherein the aryl groups of the arylchlorogermane are each independently phenyl.

4 . The method according to claim 3 , wherein the reacting (b) is carried out at room temperature.

5 . The method according to claim 3 , wherein
the arylchlorogermane is at least one selected from the group consisting of a triarylchlorogermane and a diaryldichlorogermane, a molar ratio of the triarylchlorogermane, when present, to hexachlorodisilane is 1:1, and a molar ratio of the diaryldichlorogermane, when present, to hexachlorodisilane is 1:2.

6 . The method according to claim 3 , wherein the arylchlorogermane is at least one selected from the group consisting of triphenylchlorogermane and diphenyldichlorogermane.

7 . The method according to claim 3 , wherein the solvent is dichloromethane.

8 . The method according to claim 3 , wherein the catalyst comprises a phosphonium chloride [R 4 P]Cl or an ammonium chloride salt [R 4 N]Cl, where each R is independently Me, Et, iPr, nBu, Ph.

9 . The method according to claim 3 , wherein the catalyst is used in an amount of 0.001 to 1 mol per mole of hexachlorodisilane.

10 . The method according to claim 3 , wherein at least 5 mol of the solvent is used per mole of hexachlorodisilane.

11 . The method according to claim 3 , wherein
the reacting (b) is carried out with thorough mixing and over a period of 1 to 24 hours, the solvent is subsequently removed, and the chlorosilylarylgermane is obtained as a crystalline product.

12 . A method for generating a GeSi layer, the method comprising:
preparing the GeSi layer from the chlorosilylarylgermane according to claim 1 .

13 . A method for preparing trichlorosilyltrichlorogermane, the method comprising:
dissolving GeCl 4 with hexachlorodisilane in a solvent and reacting in the presence of a catalyst at a temperature of 5 to 40° C.

14 . A method for generating a GeSi layer, the method comprising:
preparing the GeSi layer from trichlorosilyltrichlorogermane obtained by the method according to claim 13 .

Assignees

• Evonik Degussa Gmbh

Inventors

• Teichmann Julian
• Wagner Matthias
• Lerner Hans-Wolfram

Classifications

• H10P14/3411

  Silicon, silicon germanium or germanium · CPC title

• H10P14/265

  using solutions · CPC title

• C07B2200/13

  Crystalline forms, e.g. polymorphs · CPC title

• C07F7/30 Primary

  Germanium compounds · CPC title

• C01G17/00

  Compounds of germanium · CPC title