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Tautomer energy comparison

using model chemistry: HF/STO-3G

17 10 12 10 46
formula sketch Energy (kJ mol-1) Name difference
A B calculated experiment A B
C3H4 sketch of allene sketch of propyne -67 -7 allene propyne -60
C4H6 sketch of 1,2-Butadiene sketch of 1,3-Butadiene -35 -51 1,2-Butadiene 1,3-Butadiene 16
C4H6 sketch of 1,2-Butadiene sketch of 1-Butyne -53 3 1,2-Butadiene 1-Butyne -56
C4H6 sketch of 1,2-Butadiene sketch of 2-Butyne -86 -17 1,2-Butadiene 2-Butyne -69
C4H6 sketch of Cyclobutene sketch of 1,3-Butadiene 43 -49 Cyclobutene 1,3-Butadiene 92
C4H6 sketch of 1-Methylcyclopropene sketch of 1,2-Butadiene -42 -82 1-Methylcyclopropene 1,2-Butadiene 40
C4H6 sketch of Methylenecyclopropane sketch of 1-Methylcyclopropene 48 42 Methylenecyclopropane 1-Methylcyclopropene 6
C3H6O sketch of Oxetane sketch of Propanal 11 -110 Oxetane Propanal 121
C4H8 sketch of cyclobutane sketch of 1-Butene 79 -33 cyclobutane 1-Butene 111
C3H4O2 sketch of 2-Propenoic acid sketch of β–Propiolactone -106 29 2-Propenoic acid β–Propiolactone -134
C4H6S sketch of Thiophene, 2,5-dihydro- sketch of Thiophene, 2,3-dihydro- -7 4 Thiophene, 2,5-dihydro- Thiophene, 2,3-dihydro- -11
C5H8 sketch of 1,3-Pentadiene, (E)- sketch of 1,4-Pentadiene 26 25 1,3-Pentadiene, (E)- 1,4-Pentadiene 1
C5H8 sketch of 1,3-Pentadiene, (E)- sketch of 1,2-Pentadiene 47 64 1,3-Pentadiene, (E)- 1,2-Pentadiene -18
C5H10 sketch of 1-Butene, 2-methyl- sketch of 2-Butene, 2-methyl- -10 -5 1-Butene, 2-methyl- 2-Butene, 2-methyl- -5
C5H10 sketch of Cyclopropane, 1,1-dimethyl- sketch of 1-Butene, 2-methyl- 15 -29 Cyclopropane, 1,1-dimethyl- 1-Butene, 2-methyl- 44