Results 271 to 280 of about 67,257 (300)

Substituent effects in anthrasemiquinones

Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1988
Electron spin resonance spectra have been obtained from series of 2-substituted anthrasemiquinones and of 3-substituted 1,8-dihydroxyanthra-semiquinones. The proton splittings are consistently assigned by means of linear correlation plots between splitting constants and a substituent-dependent parameter.
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Substituent Effects and Mechanism in a Mechanochemical Reaction

Journal of the American Chemical Society, 2018
We report the effect of substituents on the force-induced reactivity of a spiropyran mechanophore. Using single molecule force spectroscopy, force-rate behavior was determined for a series of spiropyran derivatives substituted with H, Br, or NO2 para to the breaking spirocyclic C-O bond.
Meredith H. Barbee, Tatiana Kouznetsova, Scott L. Barrett, Gregory R. Gossweiler, Yangju Lin, Shiva K. Rastogi, William J. Brittain, Stephen L. Craig   +7 more
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Manifestation of substituent effects in the Auger parameter

Physical Review B, 1988
The Auger parameter is composed of contributions from both Auger and photoelectron energies; it is held to be a function of only extra-atomic relaxation (i.e., ligand polarization). Its correlation with the Hammett-Taft inductive substituent constant demonstrates this to be true.
, Sacher, , Brener
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Reaction kinetics of polymer substituents. Neighbouring-substituent effects in single-substituent reactions

Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1972
The kinetic behaviour is predicted for a hypothetical polymer reaction in which the reactivity of a substituent (or other reacting entity) depends on whether zero, one or two of its neighbours have already reacted. The problem is not new, but the method of analysis used here gives solutions applicable to reactions of polymer molecules containing a ...
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Substituent effects. X. Improved treatment (FMMF) of substituent effects

Journal of the American Chemical Society, 1971
Michael J. S. Dewar, Ronald Golden, J. Milton Harris   +2 more
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Biological activity and substituent effects

Archives of Biochemistry and Biophysics, 1957
D G, O'SULLIVAN, P W, SADLER
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Substituent effects. XII. Substituent effects by fluorine-19 NMR

Journal of the American Chemical Society, 1975
W. Adcock, M. J. S. Dewar, R. Golden, M. A. Zeb   +3 more
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Substituent effects on the Claisen rearrangement. The accelerating effect of a 6-donor substituent

Journal of the American Chemical Society, 1984
Dennis P. Curran, Young Ger Suh
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SUBSTITUENT EFFECTS*

Transactions of the New York Academy of Sciences, 1967
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9,9‐Dimethylxanthene Derivatives with Room‐Temperature Phosphorescence: Substituent Effects and Emissive Properties

Angewandte Chemie - International Edition, 2020
Qiuyan Liao, Qian Peng, Dan Ding
exaly