The rotational spectrum of 4-hydroxy-pyridine has been investigated by free-jet absorption millimeter-wave spectroscopy. Only the enolic form is observed. All transitions are split into two component lines due to the internal rotation of the hydroxyl group. From the ground state splitting [DE = 7.97(4) MHz] the barrier to internal rotation V2 = 1513(10) cm-1 has been obtained.

Tautomeric equilibrium and hydroxyl group internal rotation in 4-hydroxy-pyridine

GIULIANO, BARBARA MICHELA;MELANDRI, SONIA;CAMINATI, WALTHER
2006

Abstract

The rotational spectrum of 4-hydroxy-pyridine has been investigated by free-jet absorption millimeter-wave spectroscopy. Only the enolic form is observed. All transitions are split into two component lines due to the internal rotation of the hydroxyl group. From the ground state splitting [DE = 7.97(4) MHz] the barrier to internal rotation V2 = 1513(10) cm-1 has been obtained.
R.Sanchez; B. Michela Giuliano; S. Melandri; W.Caminati
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/30390
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