Unstable intermediates. Part LXXV. Electron spin resonance studies of the effect of environment upon the hyperfine parameters for PO3 2? and NO3 2?
- 1 January 1970
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc. A
- p. 1998-2000
- https://doi.org/10.1039/j19700001998
Abstract
The radicals PO3 2– and NO3 2–, formed in a variety of solids on exposure to high-energy radiation, have hyperfine parameters (31P and 14N) which are strongly dependent upon the nature of the host crystal. The results, which have been analysed in terms of s- and p-orbital contributions, show that, for PO3 2–, the spin-density is strongly dependent upon the medium, with the p to s ratio increasing slightly as the spin-density on phosphorus falls. However, the spin-density on 14N in NO3 2– is almost independent of the environment, but the p to s ratio is very sensitive to it. These results are discussed in terms of the trends observed within the isoelectronic families of these two radicals.Keywords
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