On July 23, 2009, Leito, Ivo; Raamat, Elin; Kutt, Agnes; Saame, Jaan; Kipper, Karin; Koppel, Ilmar A.; Koppel, Ivar; Zhang, Min; Mishima, Masaaki; Yagupolskii, Lev M.; Garlyauskayte, Romute Yu.; Filatov, Andrey A. published an article.Reference of 3-Nitro-4-chlorobenzenesulfonamide The title of the article was Revision of the Gas-Phase Acidity Scale below 300 kcal/mol-1. And the article contained the following:
The gas-phase acidity (GA) scale from (CF3CO)2NH to (C2F5SO2)2NH-about a 24 kcal/mol-1 range of gas-phase acidities-was reexamined using the Fourier transform ion cyclotron resonance equilibrium measurement approach. Some additions and modifications to the standard methodol. of GA measurements were introduced (estimation of partial pressures from mass spectra of the compounds, instead of the pressure gauge readings and use of long reaction times) to achieve higher reliability. Gas-phase acidities of 18 compounds were determined for the first time. The results reveal a contraction of the previously published values in this part of the scale. In particular, the GA values of (CF3SO2)2NH and (C2F5SO2)2NH (important components of lithium ion battery electrolytes and ionic liquids) were revised toward stronger acidities from 291.8 kcal/mol-1 to 286.5 kcal/mol-1 and from 289.4 kcal/mol-1 to 283.7 kcal/mol-1 (i.e., by 5.3 and 5.7 kcal/mol-1), resp. Exptl. and computational evidence is presented in support of the current results. The experimental process involved the reaction of 3-Nitro-4-chlorobenzenesulfonamide(cas: 97-09-6).Reference of 3-Nitro-4-chlorobenzenesulfonamide
The Article related to gas phase acidity ga scale revision, Physical Organic Chemistry: Acid-Base, Tautomerism, and Other Equilibrium Studies and other aspects.Reference of 3-Nitro-4-chlorobenzenesulfonamide
Referemce:
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