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Table 1 Relative energy (kcal/mol) for 2A4MP tautomers at B3LYP/6-311++G(d,p) computational levels

From: Tautomerization, molecular structure, transition state structure, and vibrational spectra of 2-aminopyridines: a combined computational and experimental study

2A4MP1

2A4MP2

2A4MP3

2A4MP4

2A4MP5

2A4MP6

2A4MP7

0

13.60

16.35

32.05

27.96

33.55

28.69