Characterization of chemical reactions by initial complexes: 1,2-addition reactions to Si=C and Si=Si bonds
نویسندگان
چکیده
Characterization of chemical reactions by initial complexes: 1,2-addition reactions to Si=C and Si=Si bonds Masae Takahashi,∗1 Tamás Veszprémi,∗2 Kenkichi Sakamoto,∗1,∗3 and Mitsuo Kira∗3 ∗1Laboratory for Organometallic Photodynamics, RIKEN Photodynamics Research Center ∗2Department of Inorganic Chemistry, Technical University of Budapest, Hungary ∗3Department of Chemistry, Graduate School of Science, Tohoku University
منابع مشابه
EFFECT OF Si ANTIOXIDANT ON THE RATE OF OXIDATION OF CARBON IN MgO- C REFRACTORY
Progressive conversion/shrinking core (PC-SC) models of constant-size cylinders were exploited to interpret the decarburization reactions of MgO-C-Si bricks heated up under blown air. Chemical adsorption/solid (or pore) diffusion mechanisms governed the reaction rate. With 5% silicon, chemical adsorption vanished at 1000 and 1100°C. The oxidation rate lowered then with temperature. This was due...
متن کاملSYNTHESIS AND CHARACTERIZATION OFSILICON CARBIDE NANO POWDER BYSOLGELPROCESSING
Abstract: SiC nano particles with mono dispersed distribution were synthesized by using of silicon alkoxides and phenolic resin as starting materials. After synthesis of sample, characterizations of the obtained powder were investigated via Fourier Transform Infrared Spectroscopy (FTIR) with 400-4000 cm-1, X-ray Diffractometry (XRD), Laser Particle Size Analyzing (LPSA), Si29 NMR analysis, Scan...
متن کاملReversible insertion of carbenes into ruthenium-silicon bonds.
The five-coordinate carbene complexes [Ru{κP,P,Si-Si(Me)(C6H4-2-PiPr2)2}Cl(═CHR)] (2, R = Ph; 3, R = SiMe3), analogues of the Grubbs catalyst, were prepared from the dimer [Ru(μ-Cl){κP,P,Si-Si(Me)(C6H4-2-PiPr2)2}]2 (1) and the corresponding diazoalkane N2CHR. The particular structural features that result from the presence of a strongly trans directing silyl group at the pincer ligand of these ...
متن کاملSynthesis and in vitro antibacterial study of dihydropyrano[3,2-c]chromene derivatives by nano fluoro apatite doped with Mg and Si as a cooperative catalyst
One of the important Multi-component reaction (MCRs) is the synthesis of dihydropyrano chromene derivatives by one-pot reaction. In this research, an inexpensive and effective one pot three component procedure with good yields for the synthesis of dihydro pyrano chromenes is reported. In this method, the synthesis of pyrano chromene derivatives was followed by using 4-hydroxycoumarin, malononit...
متن کاملMechanistic Significance of the Si–O–Pd Bond in the Palladium-Catalyzed Cross-Coupling Reactions of Alkenylsilanolates
Through the combination of reaction kinetics (both catalytic and stoichiometric) and solid-state characterization of arylpalladium(II) alkenylsilanolate complexes, the intermediacy of covalent adducts containing Si-O-Pd linkages in the cross-coupling reactions of organosilanolates has been unambiguously established. Two mechanistically distinct pathways have been demonstrated: (1) transmetalati...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2002