1. Chlorine-35 nuclear quadrupole resonance spectra of the chlorocyclotriphosphazatrienes N3P3Cl6 and N3P3Cl5NHPri
- Author
-
William H. Dalgleish, Robert A. Shaw, Rodney Keat, and Andrew L. Porte
- Subjects
Electron nuclear double resonance ,chemistry ,General Engineering ,Isotopes of chlorine ,Chlorine ,Analytical chemistry ,chemistry.chemical_element ,Resonance ,Atmospheric temperature range ,Nuclear quadrupole resonance ,Electric field gradient ,Spectral line - Abstract
Chlorine-35 nuclear quadrupole resonance frequencies, ν, in N 3 P 3 Cl 6 and in N 3 P 3 Cl 5 NH Pr i are linear functions of the applied pressure, P , within the range 1 to 1000 kg·cm −2 . Chlorine-35 nuclear quadrupole resonance frequencies in N 3 P 3 Cl 5 NH Pr i , examined over the temperature range 100 to 320 K, have revealed that this solid undergoes a sharp phase change over the temperature range 220 to 235 K. Values of the partial differential coefficients. have been evaluated for each of the resonance frequencies in N 3 P 3 Cl 6 and in N 3 P 3 Cl 5 NH Pr i . The applied pressure discriminates between the two kinds of chlorine atoms in the PCl 2 groups in N 3 P 3 Cl 5 NH Pr i . The effects of pressure on the chlorine-35 nuclear quadrupole resonance frequencies of nine chlorine nuclei in similar environments in these two molecules are similar and appear to be characteristic of the functional groups involved.
- Published
- 1975