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Titolo:
Geminal bis(hypersilyl) compounds - the synthesis and structure of bis[tris(trimethylsilyl)silyl]silanes
Autore:
Gross, T; Reinke, H; Oehme, H;
Indirizzi:
Univ Rostock, Fachbereich Chem, D-18051 Rostock, Germany Univ Rostock Rostock Germany D-18051 eich Chem, D-18051 Rostock, Germany
Titolo Testata:
CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE
fascicolo: 11, volume: 78, anno: 2000,
pagine: 1399 - 1404
SICI:
0008-4042(200011)78:11<1399:GBC-TS>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
STERICALLY OVERCROWDED MOLECULES; RAY CRYSTAL-STRUCTURES; TRIS(TRIMETHYLSILYL)SILYL DERIVATIVES; CARBENE HOMOLOGS; CHEMISTRY; SILICON; SUBSTITUENTS; POLYSILANE; TELLURIDES; CONVERSION;
Keywords:
silanes; sterically congested; bis(hypersilyl)silanes; hypersilylsilanes; bis(hypersilyl) germanes; tris(trimethylsilyl)silylsilanes;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
51
Recensione:
Indirizzi per estratti:
Indirizzo: Oehme, H Univ Rostock, Fachbereich Chem, D-18051 Rostock, Germany Univ Rostock Rostock Germany D-18051 , D-18051 Rostock, Germany
Citazione:
T. Gross et al., "Geminal bis(hypersilyl) compounds - the synthesis and structure of bis[tris(trimethylsilyl)silyl]silanes", CAN J CHEM, 78(11), 2000, pp. 1399-1404

Abstract

Protodesilylation of diphenylsilane with trifluoromethanesulfonic acid andsubsequent reaction of the obtained bis(trifluoromethanesulfonyloxy)silanewith tris(trimethylsilyl)silyllithium (1) (molar ratio 1:2) afforded bis[tris(trimethylsilyl)silyl]silane (8). Methyl-bis[tris(trimethylsilyl)silyl]silane (3) and phenyl-bis[tris(trimethylsilyl)silyl]silane (10) were obtained by coupling reactions of 1 with MeHSiCl2 or PhHSiCl2, respectively, (2:1). By treatment with HCBr3, the H-silanes 3, 8, and10 were converted into the bromosilanes [(Me3Si)(3)Si](2)(SiRR2)-R-1 (9: R-1 = R-2 = Br; 11: R-1 = Me, R-2 = Br; 12: R-1 = Ph, R-2 = Br). X-ray crystal structure analyses, performed for 3, 10 and 12, confirmed the expected distortions of the molecular skeletons of the compounds. Thus, e.g., in 10, the spatial demand of the two extended hemispherical hypersilyl groups forces a widening of the Si-Si-Si angle at the central Si atom to a value of 128.3%.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 14:59:11