Results 31 to 40 of about 2,794,131 (212)

Theoretical Calculation of Hammett Constants for Benzoic Acid and Its Derivatives Using AM1-DFT Method

Tikrit Journal of Pure Science
The Hammett equation constants were calculated theoretically by statistically correlating the practical Hammett equation constants for these compounds with several theoretically calculated structural properties.
Abdullah Ramadan Ali, Faiz M. Hamid
doaj   +1 more source

Redox Potential Tuning of s-Tetrazine by Substitution of Electron-Withdrawing/Donating Groups for Organic Electrode Materials

Molecules, 2021
Herein, we tune the redox potential of 3,6-diphenyl-1,2,4,5-tetrazine (DPT) by introducing various electron-donating/withdrawing groups (methoxy, t-butyl, H, F, and trifluoromethyl) into its two peripheral benzene rings for use as electrode material in a
Dong Joo Min, Kyunam Lee, Hyunji Park, Ji Eon Kwon, Soo Young Park   +4 more
doaj   +1 more source

Synthesis, Acidity Constants and Tautomeric Structure of the Diazonium Coupling Products of 2-(Benzylsulfanyl)-7H-purin-6-one in Its Ground and Excited States

Molecules, 2011
A series of new 8-arylhydrazono-2-(benzylsulfanyl)-7H-purin-6-ones 6 were synthesized, their electronic absorption spectra in different organic solvents of varying polarities were investigated and their acid dissociation constants in both the ground and ...
Hosam A. Saad, Farag M. Altalbawy, Elham S. Darwish, Mosselhi A. Mosselhi   +3 more
doaj   +1 more source

Oral Interview of Anne G. Hammett [PDF]

, 1974
Anne G. Hammett discusses her early education in Glyndon, Minnesota, and then at the Agricultural College of North Dakota and Minnesota State Teachers College.
Hammett, Anne G.
core   +1 more source

QUANTITATIVE FLUORESCENCE INTENSITYSTRUCTURE RELATIONSHIPS OF CERTAIN QUINOLONE-METAL CHELATES [PDF]

Bulletin of Pharmaceutical Sciences. Assiut University, 2006
A quantitative relationship was found between the relative fluorescence intensities of certain metal chelates of some quinolone antibacterials and their physicochemical parameters namely: the pKa1 (corresponding to the ionisation of the 3-carboxylic ...
Mohamed Abou-Elwafa, Samia El-Gizawi, Gamal Saleh, Michael El-Kommos   +3 more
doaj   +1 more source

A letter from A.B.J. Hammett to Dr. Hector P. Garcia, thanking him for a recent order that Dr. Hector P. Garcia put in to his company.

, 1971
A letter from A.B.J. Hammett to Dr. Hector P. Garcia, thanking him for a recent order that Dr. Hector P.
Hammett, A.B.J.
core   +3 more sources

Modular One-Pot Access to π-Expanded Tetrakis(Phenothiazinyl)-Silanes With Broadly Tunable Redox and Emission Properties. [PDF]

Chemistry
A library of 21 tetrakis(phenothiazinyl)‐substituted silanes with broadly variable substituent decoration, which are fully reversible multistage redox systems with intense tunable emission from deep blue to yellow–green (441–533 nm), was rapidly synthesized by bromine–lithium exchange/borylation–Suzuki coupling of tetrakis(4‐bromophenyl)silane or by ...
Merke TPM, Presser L, Karl L, Ganter C, Müller TJJ.   +4 more
europepmc   +2 more sources

Effect of redox potential on manganese-mediated benzylalcohol and sulfide oxidation

Comptes Rendus. Chimie, 2021
Tridentate 1,3-bis($2^{\prime}$-Ar-imino)isoindolinato manganese(II) complexes were found to efficiently catalyze the mild oxidation of organic sulfides to sulfoxides and benzyl alcohols to benzaldehydes with mCPBA and PhIO, but they proved almost ...
Meena, Bashdar I., Lakk-Bogáth, Dóra, Kaizer, József   +2 more
doaj   +1 more source

Dan Hammett: teapot/ceramics(3) [PDF]

, 2017
ARTIST: Dan Hammett (UD Professor) MATERIAL: ceramics DIMENSIONS: COLLECTION: UDC CATALOG#: UDC.3002.5 LOCATION: Counselor’s office (confirm) PROVENANCE: University of Dallas, 2017From http://www.danhammettceramics.com/: I have been privileged in ...
Hammett, Dan
core  

Substituent effects on the solvent power of the haloolefin HCFO-1233 yd.(Z)

Results in Chemistry
The solvent power of the hydrochlorofluoroolefin HCFO-1233 yd.(Z) is investigated using electron-withdrawing and electron-donating substituents on the “parent” (Z)-1-X-2,3,3-trifluoropropene, where X = NH2, OH, CH3O, CH3, F, H, Cl, COOH, CF3, CN, and NO2.
A. Fan, H. Zhou, D. Maksuta, R.J. Waltman   +3 more
doaj   +1 more source