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Tautomer energy comparison

using model chemistry: B3LYP/SDD

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 8 -7 allene propyne 15
C4H6 sketch of 1,2-Butadiene sketch of 1,3-Butadiene -48 -51 1,2-Butadiene 1,3-Butadiene 4
C4H6 sketch of 1,2-Butadiene sketch of 1-Butyne 19 3 1,2-Butadiene 1-Butyne 16
C4H6 sketch of 1,2-Butadiene sketch of 2-Butyne -10 -17 1,2-Butadiene 2-Butyne 7
C4H6 sketch of Cyclobutene sketch of 1,3-Butadiene -70 -49 Cyclobutene 1,3-Butadiene -20
C4H6 sketch of 1-Methylcyclopropene sketch of 1,2-Butadiene -111 -82 1-Methylcyclopropene 1,2-Butadiene -28
C4H6 sketch of Methylenecyclopropane sketch of 1-Methylcyclopropene 62 42 Methylenecyclopropane 1-Methylcyclopropene 20
C3H6O sketch of Oxetane sketch of Propanal -105 -110 Oxetane Propanal 5
C4H8 sketch of cyclobutane sketch of 1-Butene -32 -33 cyclobutane 1-Butene 0
C3H4O2 sketch of 2-Propenoic acid sketch of β–Propiolactone 48 29 2-Propenoic acid β–Propiolactone 19
C4H6S sketch of Thiophene, 2,5-dihydro- sketch of Thiophene, 2,3-dihydro- 8 4 Thiophene, 2,5-dihydro- Thiophene, 2,3-dihydro- 4
C5H8 sketch of 1,3-Pentadiene, (E)- sketch of 1,4-Pentadiene 37 25 1,3-Pentadiene, (E)- 1,4-Pentadiene 12
C5H8 sketch of 1,3-Pentadiene, (E)- sketch of 1,2-Pentadiene 66 64 1,3-Pentadiene, (E)- 1,2-Pentadiene 2
C5H8 sketch of 1,2-Butadiene, 3-methyl- sketch of 1,3-Butadiene, 2-methyl- -49 -52 1,2-Butadiene, 3-methyl- 1,3-Butadiene, 2-methyl- 3
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- -48 -29 Cyclopropane, 1,1-dimethyl- 1-Butene, 2-methyl- -19