Rotational isomerism: II. A calculation of the solvent dependence of the conformational equilibria in substituted ethanes and its application to NMR spectra

RJ Abraham, L Cavalli, KGR Pachler - Molecular Physics, 1966 - Taylor & Francis
A calculation of the energies of the dipolar and quadrupolar electric fields of a 1, 2-
disubstituted ethane and their dependence on the dielectric constant of the medium gave …

NMR studies of conformational equilibria in substituted ethanes

HS Gutowsky, GG Belford, PE McMahon - The Journal of Chemical …, 1962 - pubs.aip.org
Proton and fluorine magnetic resonance spectra have been observed in 12 liquid
polysubstituted ethanes over temperature ranges of 250° to 450° K. In each of these …

Rotational isomerism. Part XV. The solvent dependence of the conformational equilibria in trans-1, 2-and trans-1, 4-dihalogenocyclohexanes

RJ Abraham, ZL Rossetti - Journal of the Chemical Society, Perkin …, 1973 - pubs.rsc.org
The free energy difference between the two chair conformations of trans-1, 2-dichloro-and-1,
2-dibromo-cyclohexane (II) and trans-1, 4-dichloro-and-1, 4-dibromo-cyclohexane (III) has …

NMR Studies of Asymmetric Ethanic Rotators: 1, 2‐Disubstituted Propanes

H Finegold - The Journal of Chemical Physics, 1964 - pubs.aip.org
The NMR spectra of several 1, 2‐disubstituted propanes, particularly 1, 2‐dichloropropane
and 1, 2‐dibromopropane, are examined in detail in various media. A range of vicinal J …

Conformational studies by dynamic NMR. 7. Stereochemical processes in 2, 3-dimethylbutane

L Lunazzi, D Macciantelli, F Bernardi… - Journal of the American …, 1977 - ACS Publications
The 90.5-MHz 13C NMR spectrum of 2, 3-dimethylbutane at-180 C shows that thegauche
and antirotational iso-mers are present in the statisticalratio of 2: 1. Line shape analysis of …

Rotational isomerism—22: An nmr study of oh.. π bonding and the conformations of benzyl alcohol and derivatives

RJ Abraham, JM Bakke - Tetrahedron, 1978 - Elsevier
The conformations of benzyl alcohol, the ortho and para nitro and methoxy derivatives and
benzyl methyl ether have been investigated by NMR in CCL4 and DMSO solutions. The 3J …

The effect of solvent upon the nmr spectra of N-methylamides. I. Solvent-solute complex formation between amides and aromatic solvents

RM Moriarty - The Journal of Organic Chemistry, 1963 - ACS Publications
The effect of aromatic solvents such as pyridine, collidine, andbenzene upon the chemical
shift ofprotons in systems possessing internal hindered rotation has been studied. It was …

The study of ring inversions by nuclear magnetic resonance spectroscopy

JE Anderson - Quarterly Reviews, Chemical Society, 1965 - pubs.rsc.org
CONFORMATIONAL analysis of cyclohexane derivatives has only become fully established
since 1945, l but one of the basic tenets, the rapid interconversion among various …

Conformational studies by dynamic NMR. 31. Enantiotopomerization and torsional processes in sp2-carbon diaryl-substituted hindered compounds

BF Bonini, L Grossi, L Lunazzi… - The Journal of Organic …, 1986 - ACS Publications
The stereodynamical processes in phenyl 2, 4, 6-triisopropylphenyl ketone and the
analogues C= S, C= NH, and C= CPh2 have been investigated by NMR. In all these …

NMR Study of Rotational Barriers and Conformational Preferences. II. d11‐Cyclohexane

FA Bovey, FP Hood Iii, EW Anderson… - The Journal of Chemical …, 1964 - pubs.aip.org
The rate of conformational isomerization of cyclohexane has been measured over the
temperature range—75.0 to—47.0° by observation of the NMR spectrum of C6HD11, which …