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 (2006). Tautomeric equilibrium and hydroxyl group internal rotation in 4-hydroxy-pyridine. CHEMICAL PHYSICS LETTERS, 425, 6-9 [10.1016/j.cplett.2006.04.108].
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.File in questo prodotto:
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