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Tautomer energy comparison

using model chemistry: BLYP/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 -9 -7 allene propyne -3
C4H6 sketch of 1,2-Butadiene sketch of 1,3-Butadiene -39 -51 1,2-Butadiene 1,3-Butadiene 12
C4H6 sketch of 1,2-Butadiene sketch of 1-Butyne 5 3 1,2-Butadiene 1-Butyne 2
C4H6 sketch of 1,2-Butadiene sketch of 2-Butyne -27 -17 1,2-Butadiene 2-Butyne -10
C4H6 sketch of Cyclobutene sketch of 1,3-Butadiene 3 -49 Cyclobutene 1,3-Butadiene 53
C4H6 sketch of 1-Methylcyclopropene sketch of 1,2-Butadiene -67 -82 1-Methylcyclopropene 1,2-Butadiene 15
C4H6 sketch of Methylenecyclopropane sketch of 1-Methylcyclopropene 47 42 Methylenecyclopropane 1-Methylcyclopropene 5
C3H6O sketch of Oxetane sketch of Propanal -24 -110 Oxetane Propanal 86
C4H8 sketch of cyclobutane sketch of 1-Butene 41 -33 cyclobutane 1-Butene 73
C3H4O2 sketch of 2-Propenoic acid sketch of β–Propiolactone -96 29 2-Propenoic acid β–Propiolactone -125
C4H6S sketch of Thiophene, 2,5-dihydro- sketch of Thiophene, 2,3-dihydro- -21 4 Thiophene, 2,5-dihydro- Thiophene, 2,3-dihydro- -25
C5H8 sketch of 1,3-Pentadiene, (E)- sketch of 1,4-Pentadiene 36 25 1,3-Pentadiene, (E)- 1,4-Pentadiene 11
C5H8 sketch of 1,3-Pentadiene, (E)- sketch of 1,2-Pentadiene 54 64 1,3-Pentadiene, (E)- 1,2-Pentadiene -11
C5H10 sketch of 1-Butene, 2-methyl- sketch of 2-Butene, 2-methyl- -13 -5 1-Butene, 2-methyl- 2-Butene, 2-methyl- -8
C5H10 sketch of Cyclopropane, 1,1-dimethyl- sketch of 1-Butene, 2-methyl- -14 -29 Cyclopropane, 1,1-dimethyl- 1-Butene, 2-methyl- 15