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Rotational spectra of PF3 in the degenerate vibrational state v4=1 have been measured in the radiofrequency, centimeter-, millimeter- and submillimeterwave range. 157 rotational transitions obeying the selection rules ΔJ=1, Δk=Δl=0 have been observed in the range 100–900GHz for 9≤J≤57 and 0≤k≤37. The J=1←0 transition and 246 direct l-type resonance transitions (Δl=Δk=±2) with values of J from 16 to...
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