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Matrix-isolation FT-IR study on the protomeric tautomerism 2-hydroxypyridine⇌2-pyridone

✍ Scribed by J. Smets; G. Maes

Book ID
103029955
Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
393 KB
Volume
187
Category
Article
ISSN
0009-2614

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✦ Synopsis

The vibrational spectrum of 2-hydroxypyridine isolated in an AI matrix was studied using FT-IR spectroscopy. From expcrimental intensities of different pairs of bands assigned to the 2-0x0-(P,) and the 2-hydroxy-(HP*) tautomer respectively, a tautomerization constant of0.40 + 0.10 was calculated at 303 K, in excellent agreement with recent theoretical predictions. However, the Pz form is more abundant in a low temperature matrix than recently suggested by theoretical calculations.

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