Solvent effect on tautomeric equilibria and dipole moments of some alpha substituted benzoylacetanilides

1988 ◽  
Vol 17 (1) ◽  
pp. 67-76 ◽  
Author(s):  
Magdi M. Naoum ◽  
Gamal R. Saad
Keyword(s):  
Solvent Effect ◽  
Dipole Moments ◽  
Tautomeric Equilibria

Dipole moments and tautomeric equilibria of some aroylacetanilides

1981 ◽  
Vol 78 ◽  
pp. 155-159 ◽  
Author(s):  
Magdi M. Naoum ◽  
Hakim G. Shinouda ◽  
Ahmed S. Shawali ◽  
Hanna A. Rizk
Keyword(s):  
Dipole Moments ◽  
Tautomeric Equilibria

Dipole moments of some aromatic and aliphatic aldehydes. Their dependence on the solvent and the atomic polarization

1985 ◽  
Vol 63 (5) ◽  
pp. 1031-1034 ◽  
Author(s):  
Constantino Grosse ◽  
Magdalena Mechetti ◽  
Pedro Brito
Keyword(s):  
Dipole Moment ◽  
Solvent Effect ◽  
Dipole Moments ◽  
Electronic Polarization ◽  
Atomic Polarization ◽  
Aliphatic Aldehydes ◽  
Permittivity Measurements

The dipole moments of 21 aromatic and aliphatic aldehydes were determined. Permittivity measurements were performed on highly diluted cyclohexane solutions at 20 °C. The limiting forms of Debye's, Onsager's, and Bordewijk's expressions were used. The influence of the solvent on the dipole moment values was studied using decalin and heptane mixtures. Only the Debye's values presented an apparent solvent effect while the Onsager's and Bordewijk's values remained independent of the solvent. Dipole moment values obtained using the refractive indexes of the components were also compared with those derived using the refractive indexes of the mixtures. This permitted one to estimate in 0.07 the relation between atomic and electronic polarization.

Dipole moments of some ethylene derivatives

1967 ◽  
Vol 45 (10) ◽  
pp. 1097-1100 ◽  
Author(s):  
E. Bock ◽  
E. F. Dojack
Keyword(s):  
Dipole Moment ◽  
Carbon Tetrachloride ◽  
Solvent Effect ◽  
Benzene Solution ◽  
Dipole Moments ◽  
Vinyl Ketone ◽  
Methyl Vinyl Ketone ◽  
Methyl Vinyl ◽  
Vinyl Bromide ◽  
Reported Data

The dipole moments of the ethylene derivatives acrylonitrile, chloroacrylonitrile, methyl vinyl ketone, vinyl bromide, 1,1-dichloroethylene, and tribromoethylene were determined in benzene solution at 20 °C. The measured dipole moments were corrected for the solvent effect by the method of Looyenga. In addition the applicability of the Looyenga equation for the solvent effect was tested on earlier reported data for 20 different molecules, whose dipole moments were derived from dilute benzene and carbon tetrachloride solutions, respectively. The corrected dipole moment values were compared with earlier corrected values calculated according to the method of Le Fevre and Le Fevre and with reported gas values. It was found that for most compounds both methods of correction yielded dipole moment values which differed by 0–10% from the gas values.

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