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The  19 F NMR spectra of some PF 5 -base complexes (base = trimethylamine, 3-methylpyridine, 3,5-dimethylpyridine) were studied. It is concluded that the spectra cannot be interpretated on a first order basis, and have to be rationalized in terms of an AB 4 X spin system; this was confirmed by computer simulation of theoretical spectra and their comparison with experimental spectra.

zeitschrift für naturforschung b

Chemie der Phosphorfluoride, XXXVII / Phosphorus-Fluorine Chemistry, XXXVII: 19 F-Kernmagnetische Resonanzuntersuchungen an Phosphorpentafluorid-Basen-Komplexen /  19 F Nuclear Magnetic Resonance Investigation of Phosphorus Pentafluoride-Base Complexes