2146-97-6Relevant academic research and scientific papers
Laser-induced decomposition of 1,1-dichloro-1-silacyclobutane for gas-phase deposition of reactive solid polycarbosilane
Jakoubkova, M.,Fajgar, R.,Tlaskal, J.,Pola, J.
, p. 29 - 34 (1994)
Continuous-wave CO2 laser photosensitized (SF6) decomposition of 1,1-dichloro-1-silacyclobutane (DCSCB) leads to volatile ethene, methyltrichlorosilane, 1,1.3,3-tetrachloro-1,3-disilacyclobutane (TCDSCB) and a solid material.The reaction is assumed to be initiated by competitive (2+2) cycloreversion and dehydrochlorination.The amounts of depleted DCSCB and those of the ethene and CH3SiCl3 that are formed, as well as detection of methyltrichlorosilane-d1 and methyltrichlorosilane-d2 in the decomposition of DCSCB carried out in an excess of DCI provide indirect evidence for the intermediacy of dichlorosilene Cl2Si=CH2 and chlorosilyne CISiCH.The solid deposit is judged to be mostly poly(dichlorocarbosilane): it reacts with gaseous methanol, trifluoroethanol, trifluoroacetic acid and water. Key words: Silane; Laser-induced deposition; Polycarbosilane; Chlorosilyne
DETERMINATION OF THE STRUCTURE OF 1,1,3,3-TETRACHLORO-1,3-DISILACYCLOBUTANE FROM RAMAN AND INFRARED SPECTRA
Schnoeckel, H.,Zhengyan, Lin,Auner, N.,Bleckmann, P.,Hinrichsen, M.
, p. 1 - 8 (1985)
The structure of 1,1,3,3-tetrachloro-1,3-disilacyclobutane, (1) is confirmed by its infrared and Raman spectra.A planar structure for the four-membered ring has been established from frequency and intensity calculations of the infrared- and Raman-active vibrations.The infrared and Raman spectra of (1) were recorded in the solid state and by means of matrix isolation techniques.The results obtained lead to a reliable assignment of the observed bands to calculated frequencies.
Hetero-?-Systems, 8. Silaethene
Maier, Guenther,Mihm, Gerhard,Reisenauer, Hans Peter
, p. 2351 - 2368 (2007/10/02)
By means of a combination of vacuum flash pyrolysis and matrix isolation silaethene (1a) and its simply substituted derivatives 1b-f can be prepared starting with precursors 9a-f of the silabicyclooctadiene type.Silaolefins 1a-f are stable in argon at 10 K and can be identified by their characteristic IR and UV spectra.
SILAETHENE II. DARSTELLUNG UND CHARAKTERISIERUNG VON 1,3-DISILACYCLOBUTANEN
Auner, N.,Grobe, J.
, p. 151 - 178 (2007/10/02)
1,3-Disilacyclobutanes of the types R1R2SiSiR1R2 are prepared (a) by ring synthesis from chloromethylchlorosilanes R1R2Si(CH2Cl)Cl, (b) by thermolysis of monosilacyclobutanes , and (c) by substitution of chlorine with alkyl groups in SiCl-containing 1,3-disilacyclobutanes, obtained by procedures (a) or (b).The compounds have been characterized by analytical and spectroscopic investigations.The synthetic methods are critically compared.
THERMOLYSE UND PHOTOLYSE EINIGER SILA- UND DISILACYCLOBUTANE
Jutzi, Peter,Langer, Peter
, p. 401 - 410 (2007/10/02)
The thermolysis of some 1,1-di- or 1,1,2-tri-substituted 1-silacyclobutanes leads to 1,3-disilacyclobutanes or to polymeric products.A possible intermediate silaalkene could not be stabilized, even in the presence of bulky substituents at the silicon atom.Photolysis of some di- or tri-substituted silacyclobutanes in methanol results in ring opening or in elimination of an alkene with further reaction of the intermediates with the solvent.Photolysis of the 1,1-diphenyl-2-methyl-1-silacyclobutane in cyclohexane leads to the 1,1,3,3-tetraphenyl-1,3-disilacyclobutane.The influence of the substituents at the silicon or the carbon atom on the reaction pathways is discussed.Photolysis opening and addition of methanol, whereas the 1,1,3,3-tetraphenyl-1,3-disilacyclobutane does not show any reaction.
