PMR study of intramolecular motions in solid p-toluidine
β Scribed by Ratna Sircar; S.C. Mishra; R.C. Gupta
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 364 KB
- Volume
- 73
- Category
- Article
- ISSN
- 0022-2860
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π SIMILAR VOLUMES
Proton Zcoman-and dipolar spin-lattice rekxation times and second moments have been measured in polycrystallinc SiH4 at 24 %IHz, between 90 and 3 K. Down to 25 K the classical model for molecular motion appibs; below 25 EC, quantum effects have to be taken into account.
The dielectric permittivity and loss spectra of glassy and ultraviscous states of acetaminophen have been measured over the frequency range 10 Hz-0.4 MHz. The relaxation spectra show an asymmetric distribution of times expressed in terms of the Kohlrausch exponent, b, which remains constant at 0.79