Tautomeric equilibrium and hydroxyl group internal rotation in 4-hydroxypyridine-Science-Chemical Encyclopedia-lookchem

Tautomeric equilibrium and hydroxyl group internal rotation in 4-HYDROXYPYRIDINE (cas 108-96-3)
Add time:08/27/2019 Source:sciencedirect.com

The rotational spectrum of 4-hydroxypyridine 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 (ΔE = 7.97(4) MHz) the barrier to internal rotation V2 = 1513(10) cm−1 has been obtained.

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