Journal ArticleDOI
Relations structure-réactivité grandeurs thermodynamiques de protonation d'h'et'erocycles saturés et non saturés
TLDR
The influence of the structure of these molecules on their reactivity towards the hydrogen ion was discussed, on the basis of the related ΔH° and ΔS° functions as mentioned in this paper.About:
This article is published in Thermochimica Acta.The article was published on 1977-09-01. It has received 22 citations till now. The article focuses on the topics: Barbituric acid & Thiazolidine.read more
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Book ChapterDOI
Basicity and Acidity of Azoles
Javier Catalán,José Elguero +1 more
TL;DR: In this paper, a large collection of solution data and a thoroughly updated discussion of thermodynamic, kinetic, and structural results of aromatic azoles is provided. But the main focus of this paper is on the parent structure on theoretical grounds.
Journal ArticleDOI
Barbituric and thiobarbituric acids: a conformational and spectroscopic study.
TL;DR: A conformational study on Barbiturics and Thiobarbituric acids was performed at ab initio MP2/6-31G** level on the neutral, protonated, mono- and di-anionic forms through the ZINDO approach.
Journal ArticleDOI
Coordination of N-donor ligands by hematohemin
TL;DR: In this paper, it was shown that N-donor ligands, L (L = ethanolamine, imidazole, N - acetyl imidaxole, and pyridine) bind at 25 °C in a stepwise manner, to form initially the high-spin mono (L) intermediate before a second ligand is bound to form the low-spin bis(L) complex.
Journal ArticleDOI
A theoretical study of the structure, charge distribution and gas-phase basicity of azaindoles
TL;DR: In this article, the structural changes which take place in the exchange of the imino proton are fully analized and explained in terms of hybridization effects, valence-shell electron-pairs repulsions and intramolecular non-bonded interactions.
Journal ArticleDOI
Complexation of metals with hydantoins
TL;DR: In this paper, the metal complexation reactions with 5,5-dimethylhydantoin were characterized and the results were useful for incorporation with chemical equilibrium models for evaluation of the speciation and the reactions of metals in hydantoin-laden wastewaters, particularly certain coal gas liquors.
References
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Journal ArticleDOI
Interactions of histidine and other imidazole derivatives with transition metal ions in chemical and biological systems
Journal ArticleDOI
Influence des effets de substituants sur la protonation de la pyridine
Y. Fuseau,O. Enea,G. Berthon +2 more
TL;DR: In this article, the free energies of substituted pyridine derivatives were derived from equilibrium constants of the equation log K = 5,48 − 5,94 Σσ, and a linear relationship was found between Δ G o and Δ H o.
Journal ArticleDOI
Relations linéaires enthalpies-entropies complexation de l'argent par des pyridines substituées
G. Berthon,O. Enea,Y. Fuseau +2 more
TL;DR: In this paper, the authors considered a series of eight substituted pyridines in an aqueous medium containing 0.5M KNO 3 to assure constant ionic strength.
Journal ArticleDOI
Étude thermodynamique de la complexation de l'argent par la pipéridine et ses dérivés méthylés
TL;DR: In this article, a linear relationship is found between complexation enthalpies and proton ionization enthpies, and all the thermodynamic functions are discussed in relation to the substituent position.