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Tautomer energy comparison

using model chemistry: MP2/cc-pV(T+d)Z

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 -19 -7 allene propyne -12
C4H6 sketch of 1,2-Butadiene sketch of 1,3-Butadiene -50 -51 1,2-Butadiene 1,3-Butadiene 1
C4H6 sketch of 1,2-Butadiene sketch of 2-Butyne -31 -17 1,2-Butadiene 2-Butyne -14
C4H6 sketch of Cyclobutene sketch of 1,3-Butadiene -43 -49 Cyclobutene 1,3-Butadiene 6
C4H6 sketch of 1-Methylcyclopropene sketch of 1,2-Butadiene -66 -82 1-Methylcyclopropene 1,2-Butadiene 17
C4H6 sketch of Methylenecyclopropane sketch of 1-Methylcyclopropene 41 42 Methylenecyclopropane 1-Methylcyclopropene -0