Zobrazeno 1 - 10
of 326
pro vyhledávání: '"Jacques Dunogues"'
Publikováno v:
Materials Science Forum. :31-36
The ab initio calculations of the stability of unknown materials present new developments in solid state chemistry and can improve the research of new superhard materials. The compound C3N4 is an interesting illustration of such a new route for predi
Publikováno v:
Diamond and Related Materials. 8:1707-1710
The ab initio calculations of the stability of unknown materials present new developments in solid state chemistry and can improve the research of new superhard materials. The compound C3N4 is an interesting illustration of such a new route for predi
Publikováno v:
Rapid Communications in Mass Spectrometry. 12:1419-1424
Publikováno v:
Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics-Physics-Chemistry-Astronomy. 325:229-234
Resume β - C 3 N 4 , annonce au travers de calculs ab initio , semble difficile a preparer du fait de la stabilite de la molecule N 2 lorsque de hautes temperatures sont requises par la synthese. Utilisant un procede solvothermal ( P ≈ 130 MPa, T
Publikováno v:
Journal of Materials Science. 32:3475-3483
Organosilicon polymers with a (C/Si (atomic ratio)
Publikováno v:
Journal of Materials Science. 32:2367-2372
Quasi stoichiometric model SiC monofilaments (C/Si atomic ratio ≈ 1.02) with still some free carbon (≈3 mol%) and residual oxygen have been produced from a novel copolymer precursor, itself prepared from methylphenyldichlorosilane and 2,4-dichlor
Publikováno v:
Journal of Materials Science. 32:3237-3242
Two methods for preparing precursors of Si/C/B-based thermostructural materials have been developed. The first consists of a thermal treatment of a mixture of polydimethylsilane (PDMS), (Me2Si)n, and triethylamine–borane adduct, Et3N : BH3 at atmos
Autor:
Marc Birot, Edouard Bonnefon, Jacques Dunogues, Christian Courseille, Jean-Paul Pillot, Francis Taulelle
Publikováno v:
Main Group Metal Chemistry, Vol 19, Iss 12, Pp 761-768 (1996)
Publikováno v:
Journal of Organometallic Chemistry. 522:213-221
Bis(2-thienyl)silanes and bis[5-(2-bromothienyl)]silanes were synthesized by electrochemical reduction of monohalothiophenes (Br,Cl) and 2,5-dibromothiophene respectively in the presence of a dichlorosilane in THF or LME, using an undivided cell, a s
Synthesis of disilylmethanes and polysilacarbosilanes, precursors of silicon carbide-based materials
Autor:
Claude Biran, Pierre Gerval, Marc Birot, Jean-Paul Pillot, Eric Bacque, P. Lapouyade, Jacques Dunogues
Publikováno v:
Journal of Organometallic Chemistry. 521:99-107
Using a new procedure, substituted disilylmethanes have been prepared from chlorosilanes, dichloromethane, and magnesium in tetrahydrofuran. Bis(chlorosilyl)methanes can be used as comonomers for the synthesis of polysilacarbosilanes, which are trans