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Titolo:
Synthesis of tris(silyl)methanes by modified direct process
Autore:
Lee, CY; Han, JS; Oh, HS; Yoo, BR; Jung, IN;
Indirizzi:
Mokpo Natl Univ, Dept Chem, Chonggye Myon 534729, Chonnam, South Korea Mokpo Natl Univ Chonggye Myon Chonnam South Korea 534729 nam, South Korea Korea Inst Sci & Technol, Korea Organosilicon Chem Lab, Seoul 130650, South Korea Korea Inst Sci & Technol Seoul South Korea 130650 ul 130650, South Korea
Titolo Testata:
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
fascicolo: 10, volume: 21, anno: 2000,
pagine: 1020 - 1024
SICI:
0253-2964(20001020)21:10<1020:SOTBMD>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
SI-H BONDS; METHYLCHLOROSILANES; SILICON;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Jung, IN Mokpo Natl Univ, Dept Chem, 61 Torim Ri, Chonggye Myon 534729, Chonnam, South Korea Mokpo Natl Univ 61 Torim Ri Chonggye Myon Chonnam South Korea 534729
Citazione:
C.Y. Lee et al., "Synthesis of tris(silyl)methanes by modified direct process", B KOR CHEM, 21(10), 2000, pp. 1020-1024

Abstract

Direct reaction of elemental silicon with a mixture of (dichloromethyl)silanes 1 [CL3 .nMenSiCHCl2: n = 0 (a), rt = 1 (b), n = 2 (c), n = 3 (d)] and hydrogen chloride has been studied in the presence of copper catalyst usinga stirred bed reactor equipped with a spiral band agitator at various temperatures from 240 degreesC to 310 degreesC. Tris(silyl)methanes with Si-H bonds, 3a-d [Cl3 .nMenSiCH(SiHCl2)(2)], and 4a-d [Cl3 .nMenSiCH(SiCl3)(2)], were obtained as the major products and tris(silyl)methanes having no Si-H bond 5a-d [Cl3(3 .n)Me(n)SiCH(SiC3)(2)], as the minor product along with byproducts of bis(chIorosilyl)methanes, derived from the reaction of silicon with chloromethylsilane formed by the decomposition of I. In addition to those products, trichforosilane and tetrachlorosilane were produced by the reaction of elemental silicon with hydrogen chloride. The decomposition of I was suppressed and the production of polymeric carbosilanes reduced by adding hydrogen chloride to 1. Cadmium was a good promoter for the reaction, and the optimum temperature for this direct synthesis was 280 degreesC.

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Documento generato il 29/03/20 alle ore 11:40:03