Results 261 to 270 of about 323,461 (284)

Alkoxy‐substituted diaryliodonium salt cationic photoinitiators

Journal of Polymer Science Part A: Polymer Chemistry, 1989
AbstractThis paper describes the synthesis and characterization of a series of (4‐alkoxyphenyl)phenyliodonium salts which are excellent photo‐ and thermal‐initiators for the cationic polymerization of vinyl and heterocyclic monomers. These compounds are easily prepared by straightforward synthetic techniques and display very good solubility and ...
J. V. Crivello, J. L. Lee
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ChemInform Abstract: BUTADIYNYL‐SUBSTITUTED VINYL CATIONS

Chemischer Informationsdienst, 1983
AbstractDie Solvolyse der ungesättigten Triflate (I)‐(III) wird unter verschiedenen Bedingungen untersucht.
M. LADIKA, P. J. STANG, M. D. SCHIAVELLI, M. R. HUGHEY   +3 more
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[Modified substitution of intracellular cations].

Der Anaesthesist, 1987
In order to ascertain the effect of modified supplementation of electrolytes and trace metals on intracellular uptake, 75 patients undergoing mitral valve replacement were randomly divided into three groups: group A (n = 25) received potassium and sodium chloride while group B (n = 25) was treated with potassium aspartate; in group C (n = 25), a ...
B, von Bormann, B, Weidler, J, Boldt, D, Kling, H H, Scheld, N, Kling, G, Hempelmann   +6 more
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Cation radicals of N-substituted phenothiazines

Chemistry of Heterocyclic Compounds, 1996
The reaction of N-substituted phenothiazines with certain acceptors (halogenated solvents CHCl3, CH2Br2, CCl4, o-chloranil, AlCl3, SnCl4, concentrated H2SO4, concentrated HNO3 in HClO4) has been studied by EPR spectroscopy. The hyperfine structure in the EPR spectra of the cation radicals is analyzed.
O. B. Tomilin, E. P. Konovalova, V. N. Yuzhalkin, L. V. Ryabkina, �. P. Sanaeva   +4 more
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Cation distribution in substituted lithium ferrite

IEEE Transactions on Magnetics, 1979
Magnetization data are not sufficient for a comprehensive understanding of cation distribution of substituted Li ferrites. Neutron and X-rays diffraction, and Mossbauer experiments were carried out on several Li-Zn and Li-Ti ferrites with general compositions : Fe 2.5-z/2-3t/2-m Li 0.5+t/2-z/2 Zn z Ti t Mn m O 4 (0 < z < 0.7, 0 < t < 0.8, m is either 0
M. Nogues, J. Dormann, M. Perrin, W. Simonet, P. Gibart   +4 more
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Radical cations from diarylamino-substituted fluorenones

Tetrahedron Letters, 2013
Abstract Chemical oxidation of diarylamino-substituted fluorenones gives highly persistent radical cations, some of which can be stored in the solid state for months. Solution UV–vis-NIR spectra show strong monoradical cation absorption bands in the 750–1700 nm range, with minimum energy about 0.73 eV. 2,7-Bis(dianisylamino)fluorenone exhibits strong
Jamie Homnick, Jonathan S. Tinkham, Paul M. Lahti   +2 more
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Cooperative Lewis acidity in borane-substituted fluorophosphonium cations

Chemical Communications, 2016
Fluorophosphonium salts C6X4(BR2)Ph2PF[B(C6F5)4] (X = H, F; R = Cy, Mes) exhibit enhanced Lewis acid catalytic reactivity as a results of the proximity of the fluorophosphonium and borane moieties.
Juri, Möbus, Thorsten, Vom Stein, Douglas W, Stephan   +2 more
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Cation deficiency in Si-substituted YIG

AIP Conference Proceedings, 1975
The results of MOssbauer and crystal chemical experiments on specimens of silicon‐substituted YIG prepared by solid state reaction indicate that the Fe2+ ion content is substantially lower than the Si4+ content resulting in large concentrations of cation vacancies. These vacancies can occur in all three types of cation sites. It is highly probable that
R. M. Housley, S. Geller, G. P. Espinosa
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Radical cations of some substituted pyrenes

Canadian Journal of Chemistry, 1970
The electron spin resonance spectra of several substituted pyrene cations, produced by oxidation with boron trifluoride in sulfur dioxide, are reported. The spectra are analyzed and the splitting constants given. With 4-chloropyrene, hyperfine splitting is observed due to the chlorine atom, for the first time in such a species.
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Silicon-substituted cyclopropylcarbinyl cations

The Journal of Organic Chemistry, 1982
Barry B. Snider, Michael Karras
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