Proton chemical shifts and thermodynamics of the formation of hydrogen-bonded dimers and mixed 1:1 associates in the ternary system acetic acid/methanol/tetrahydrofuran-d8

1980 ◽  
Vol 84 (7) ◽  
pp. 799-805 ◽  
Author(s):  
Detlef Gerritzen ◽  
Hans-Heinrich Limbach
Keyword(s):  
Acetic Acid ◽  
Ternary System ◽  
Chemical Shifts ◽  
Proton Chemical Shifts ◽  
Hydrogen Bonded

Cyclic trimers of phosphinic acids in polar aprotic solvent: symmetry, chirality and H/D isotope effects on NMR chemical shifts

2018 ◽  
Vol 20 (7) ◽  
pp. 4901-4910 ◽  
Author(s):  
V. V. Mulloyarova ◽  
I. S. Giba ◽  
M. A. Kostin ◽  
G. S. Denisov ◽  
I. G. Shenderovich ◽  
...  
Keyword(s):  
Aprotic Solvent ◽  
Chemical Shifts ◽  
Isotope Effects ◽  
Nmr Chemical Shifts ◽  
Polar Aprotic Solvent ◽  
Phosphinic Acids ◽  
Proton Chemical Shifts ◽  
Bonded Complexes ◽  
Hydrogen Bonded

By using NMR in liquefied gases, the stoichiometry of hydrogen-bonded complexes is determined via H/D isotope effects on proton chemical shifts.

scholarly journals Theoretical study on the proton chemical shifts of hydrogen bonded nucleic acid bases

1977 ◽  
Vol 4 (1) ◽  
pp. 99-116 ◽  
Author(s):  
Claude Giessner-Prettre ◽  
Bernard Pullman ◽  
Jacqueline Caillet
Keyword(s):  
Nucleic Acid ◽  
Theoretical Study ◽  
Chemical Shifts ◽  
Nucleic Acid Bases ◽  
Proton Chemical Shifts ◽  
Hydrogen Bonded

Proton chemical shifts in some hydrogen bonded solids and a correlation with bond lengths

1989 ◽  
Vol 91 (12) ◽  
pp. 7387-7391 ◽  
Author(s):  
R. Kaliaperumal ◽  
R. E. J. Sears ◽  
Q. W. Ni ◽  
J. E. Furst
Keyword(s):  
Chemical Shifts ◽  
Bond Lengths ◽  
Proton Chemical Shifts ◽  
Hydrogen Bonded

Vapour-liquid equilibrium in the ternary system cyclohexane-acetic acid-propionic acid

1989 ◽  
Vol 54 (11) ◽  
pp. 2840-2847 ◽  
Author(s):  
Ivona Malijevská ◽  
Alena Maštalková ◽  
Marie Sýsová
Keyword(s):  
Acetic Acid ◽  
Ternary System ◽  
Propionic Acid ◽  
Activity Coefficients ◽  
Error Propagation ◽  
Analytical Techniques ◽  
Liquid Equilibrium ◽  
Consistency Test ◽  
Propagation Law ◽  
Equilibrium Data

Isobaric equilibrium data (P = 101.3 kPa) for the system cyclohexane-acetic acid-propionic acid have been measured by two different analytical techniques. Activity coefficients calculated by simultaneous solving of equations for the chemical and phase equilibria were subjected to a consistency test based on inaccuracies determined from the error propagation law, and were correlated by Wilson’s equation. The activity coefficients measured were compared with those calculated from binary vapour-liquid equilibrium data and with values predicted by the UNIFAC method.

NMR-spektroskopische Untersuchungen über zwischenmolekulare Wechselwirkungen bei Benzolderivaten und Pyrrol / NMR-Spectroscopic Investigation of the Intermolecular Reactions of Benzene Derivatives and Pyrrole

1969 ◽  
Vol 24 (11) ◽  
pp. 1365-1370 ◽  
Author(s):  
H.-H. Perkampus ◽  
U. Krüger ◽  
W. Krüger
Keyword(s):  
Dipole Moment ◽  
Temperature Dependence ◽  
Aromatic Compounds ◽  
Spectroscopic Investigation ◽  
Chemical Shifts ◽  
Benzene Derivatives ◽  
Intermolecular Reactions ◽  
Proton Chemical Shifts

The proton chemical shifts of aromatic compounds are strongly concentration dependent. Moreever, for molecules with a dipole moment a temperature dependence of the proton chemical shifts is observed. For hemellitone, p-methylanisole, o-chlortoluene, p-chlortoluene, pyrrole and N-methyl-pyrrole the enthalpies of a dipole-dipole association between -0,7 and -1,8 Kcal could be estimated by NMR measurements combined with the temperature dependence in the whole range of the molefraction (0 → 1).

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