Dielectric relaxation in NH---N bond complexes
โ Scribed by Mridula Gupta; Mradula Chauhan; S.K. Saxena; J.P. Shukla
- Publisher
- Elsevier Science
- Year
- 1982
- Weight
- 536 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0378-4487
No coin nor oath required. For personal study only.
โฆ Synopsis
Dielectric relaxation measurements on NH ---N bonded complexes of pyrrole and indole with pyridine and quinoline molecules respectively have been undertaken at a 9.8 GHz frequency over a range of temperatures 293 -323 K by use of the method of Gopala KrishnaIll, Higasi[2J and Higasi, Koga and Nakamura [3]. The observed results indicate the presence of NH---N bonded complexes in the above temperature range under the microwave field. The dipole moments associated with the complexes and thermodynamical parameters have slso been determined, and the results obtained exhibit formation of NH---N bond, which behave as a single unit under the applied field.
๐ SIMILAR VOLUMES
Dielectric constant and loss values have been obtained between 1 and 35 GHz for several:polyhydroxyl alcohols in p-dioxane solution at 25OC. The data have been analyzed in terms of a Cole-Cole distribution. The relaxation times are sensitive to the proximity of the hydroxyl groups and the degree of
## Interferometric measurements of the complex pernutivlty of N.Ndimethylaceramrde m CC~J m the 3.4 to 67.7 GHz range at 20,35 and 50-C are reported. The relaxatIonal propertles of the system can be described by a sunple Debye modeL The reiaxatron time and &pole reorrentatron actwatlon energy of t
The value of the isotopic ratio (ISR) vs(NH)/vs(ND) has been determined for a number of crystalline compounds containing homoconjugated [NHN]+ cations, including various salts of 1,8-bis(N,N-dimethylamino)naphthalene (DMAN). The results obtained, together with the literature data, enabled us to plot