Results 331 to 340 of about 124,907 (379)
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Dehydrocondensation of trialkylsilanes with acetylene and monosubstituted acetylenes
Journal of Organometallic Chemistry, 1984Abstract Trialkylsilanes readily undergo dehydrocondensation with acetylene and substituted acetylenes in the presence of the catalytic systems, H2PtCl6/iodine, lithium iodide or /trialkyliodosilanes, and so the monosubstituted acetylenes HCCR (R = C4H9, C(CH3)3, CH2Cl, C6H5) smoothly afford the corresponding trialkyl(organylethynyl)silanes.
I. I. Tsykhanskaya +3 more
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Journal of Applied Chemistry, 1959
AbstractThe evidence for the presence of benzene in the low‐temperature pyrolysis of acetylene is reviewed in the light of recent communications.1,2.
D. M. Newitt, P. Rutledge, G. J. Minkoff
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AbstractThe evidence for the presence of benzene in the low‐temperature pyrolysis of acetylene is reviewed in the light of recent communications.1,2.
D. M. Newitt, P. Rutledge, G. J. Minkoff
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The trimethylsilylation of acetylene
Chemical Communications, 2002The gas-phase reaction of Me3Si+ ions with acetylene is remarkably sensitive to the environment, leading to substitution products in radiolytic systems at atmospheric pressure and to rearranged adduct ions in the FT-ICR cell at 10−8 Torr, while seeming unproductive in an intermediate pressure range.
CHIAVARINO, Barbara +2 more
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High-resolution Raman spectra of acetylene, acetylene-d1, and acetylene-d2
Journal of Molecular Spectroscopy, 1972Abstract The Raman-active fundamental bands of C2H2, C2HD, and C2D2, excited by Hg 4047 and Hg 4358 in a multiple-reflection Raman tube, were photographed with a spectral resolution of ∼0.3 cm−1. Extensive rotational structure was recorded for the ν1, ν2, and ν 4 1 bands of C2H2 and C2D2 and the ν1 and ν2 bands of C2HD; Q branches ...
H Fast, H.L. Welsh
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A theoretical study on acetylene dimer, acetylene-s-tetrazine and acetylene-benzene associates
Collection of Czechoslovak Chemical Communications, 1988Stabilization energies for the title van der Waals molecules were calculated for various mutual orientations of the subsystems. The interaction energy was expressed as a sum of three contributions: the Hartree-Fock interaction energy, the basis set superposition error and the dispersion energy.
Rudolf Zahradník +3 more
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1989
The discovery of the metallic conductivity (σ) of polyethyne1 (hereafter polyacetylene) in 1977 disclosed a new field of research on organic polymers, with the aim of combining the properties of two divergent classes of materials: plastics and metals. The characteristics of this material and its technological applications have stimulated the interest ...
Bolognesi A, Catellani M, Destri S
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The discovery of the metallic conductivity (σ) of polyethyne1 (hereafter polyacetylene) in 1977 disclosed a new field of research on organic polymers, with the aim of combining the properties of two divergent classes of materials: plastics and metals. The characteristics of this material and its technological applications have stimulated the interest ...
Bolognesi A, Catellani M, Destri S
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ChemInform Abstract: Silylcupration of Acetylenes.
ChemInform, 1986AbstractThe organosilylcuprates (II), prepared from the chlorosilanes (I), are employed in the silylation of the acetylenes (III), producing the trans‐substituted olefins (IV).
John P. Oliver, Hsiao-Ming Chen
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1991
Publisher Summary This chapter describes the vibrational spectra of alkyl acetylenes. The characteristic frequencies of acetylenes arise from vibrations involving =C—H stretching and bending, C=C stretching, and =C—C stretching and bending modes. The presence of monosubstituted acetylenes can be readily determined by the strong infrared (IR) bands ...
Daimay Lin-Vien +3 more
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Publisher Summary This chapter describes the vibrational spectra of alkyl acetylenes. The characteristic frequencies of acetylenes arise from vibrations involving =C—H stretching and bending, C=C stretching, and =C—C stretching and bending modes. The presence of monosubstituted acetylenes can be readily determined by the strong infrared (IR) bands ...
Daimay Lin-Vien +3 more
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Bioactive acetylenic metabolites
Phytomedicine, 2013This article focuses on anticancer, and other biological activities of acetylenic metabolites obtained from plants and fungi. Acetylenic compounds belong to a class of molecules containing triple bond(s). Naturally occurring acetylenics are of particular interest since many of them display important biological activities and possess antitumor ...
Abraham J. Domb +2 more
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Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1965
The oxidation of acetylene at temperatures between 300 and 400 °C has been studied both manometrically and by detailed product analysis. The results of previous investigators have in general been confirmed but in addition important new kinetic data have been established.
Ronald George Wreyford Norrish +1 more
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The oxidation of acetylene at temperatures between 300 and 400 °C has been studied both manometrically and by detailed product analysis. The results of previous investigators have in general been confirmed but in addition important new kinetic data have been established.
Ronald George Wreyford Norrish +1 more
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