Abstract
HYPERFINE structure (h.f.s.) arising from interaction of the unpaired electron with nitrogen or hydrogen atoms of the phthalocyanin (Pc) or porphin ring system in metal complexes has been observed in only a few cases. Copper complexes readily exhibit nitrogen h.f.s., and there is evidence for it in reduced cobalt phthalocyanin tetrasulphonate1. Both nitrogen and hydrogen h.f.s. are observed in reduced zinc aetioporphyrin and zinc tetrabenzporphyrin2.
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Rollman, L. D., and Iwamoto, R. T., J. Amer. Chem. Soc., 90, 1455 (1968).
Hush, N. S., and Rowlands, J. R., J. Amer. Chem. Soc., 89, 2976 (1967).
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GUZY, C., RAYNOR, J. & STODULSKI, L. Hyperfine Structure in the Electron Spin Resonance Spectra of Reduced Chromium and Iron Phthalocyanins. Nature 221, 551 (1969). https://doi.org/10.1038/221551a0
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DOI: https://doi.org/10.1038/221551a0
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