✦ LIBER ✦

The conformational equilibrium constant of divalent sulfur

✍ Scribed by Ernest L. Eliel; Louis A. Pilato

Publisher: Elsevier Science
Year: 1962
Tongue: French
Weight: 156 KB
Volume: 3
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)71108-7

No coin nor oath required. For personal study only.

✦ Synopsis

IN the previous letter,' a conformational free energy difference2 of 0.8 kcal/mole was reported for the -SC6H5 group. The small magnitude of this difference agrees with the finding of Chiurdoglu and coworkers3 for -SH based on infrared study and is also in line with findings for other single atoms, such as F, Cl, Br or I 4 and two-atom groups, such as -OX1 and HgBr.

📜 SIMILAR VOLUMES

How does the accuracy of NMR conformatio

How does the accuracy of NMR conformational analysis depend on the equilibrium constant?

✍ N. M. Sergeyev 📂 Article 📅 1978 🏛 John Wiley and Sons 🌐 English ⚖ 244 KB

## Abstract Analytical expressions are derived for the analysis of the accuracy of NMR determinations of conformational equilibrium constants, __K__. The relative error, σ~K~/__K__, shows a nearly linear increase with __K__ for two commonly used modifications of the NMR approach to conformational a

The Conformational Equilibrium of the Lo

The Conformational Equilibrium of the Lower Alkanes

✍ Priv.-Doz. Dr. Gerd Schrumpf 📂 Article 📅 1982 🏛 John Wiley and Sons 🌐 English ⚖ 117 KB

The conformational equilibrium of the am

The conformational equilibrium of the amino group

✍ E.L. Eliel; E.W. Della; T.H. Williams 📂 Article 📅 1963 🏛 Elsevier Science 🌐 French ⚖ 218 KB

Williams of Notre Dame, AMONG the numerous conformational equilibrium values reported in the literature 1,2 that of the amino group is conspicuously missing. Tich;, Jon;; and Sicher3 some years ago determined pK data which indicate a qualitatively that the -dG value for the equilibrium is comparable

Kinetics and equilibrium constants of so

Kinetics and equilibrium constants of some pentacyanoferrate(II) complexes of nitrogen and sulfur containing heterocycles

✍ Yakup Baran; Ahmet Ülgen 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 127 KB 👁 2 views

The kinetics of the substitution reactions of ion with a series of 3Ϫ Fe(CN) H O 5 2 nitrogen and sulfur containing heterocycles were studied in aqueous media. In the presence of excess ligand, varied over a large range of concentrations, second-order rate constants were calculated at Activation par

Conformational Analysis and Chromic Acid

Conformational Analysis and Chromic Acid Oxidation. Oxidation Rates and Equilibrium Constants of Epimeric Alcohols

✍ Paul Müller; Jean-Claude Perlberger 📂 Article 📅 1976 🏛 John Wiley and Sons 🌐 German ⚖ 475 KB 👁 1 views

## Abstract The linear free energy relationship of __Sicher__ for relative reactivity towards chromic acid oxidation (ΔΔ__G__) as a function of thermodynamic stability (Δ__G__) has been reexamined with 23 pairs of epimeric alcohols. The plot of Δ__G__ __vs__. Δ__G__ has a slope of 0.8, a correlatio

The conformational equilibrium of [2.2]p

The conformational equilibrium of [2.2]paracyclophanes in solution

✍ Ernst, Ludger 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 506 KB

## Abstract A conformational equilibrium exists in solution between two skew forms (__s__^+^ and __s__^−^) of [2.2]paracyclophane (1a). The vicinal coupling constants in the ^1^H‐NMR spectra of the bridge protons in the six __ar__‐monosubstituted derivatives 1b–1g (RCN, NO, Br, CH~3~, CHO, and NO~