| Autor: |
Amm, D. T., Segel, S. L., Bastow, T. J., Jeffrey, K. R. |
| Předmět: |
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| Zdroj: |
Journal of Chemical Physics; 1/1/1986, Vol. 84 Issue 1, p1, 4p |
| Abstrakt: |
The temperature dependence of the 23NaOH pure quadrupole resonance (NQR) frequency has been studied from 77 to 550 K and shows a change in slope and a discontinuous change in frequency of 6±2 kHz at the orthorhombic to monoclinic phase transition at 505 K. At 292 K the 23Na NQR frequency is 1.778±0.001 MHz, η<0.04. The temperature dependence of the deuterium quadrupole coupling was fit to a librating molecule model between 293 and 570 K (QCC=245±2 kHz, η=0.05±0.01 at 293 K) and confirms that the frequency of the OD- libration decreases in the high temperature monoclinic phase. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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