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Table 2

Intermediate and transition state energies relative to starting materials for second substitution of c-C3HC2H and c-C3HCN to form c-C3 (C2 H)2 and c-C3 (CN)2.

Product Erel I1 (Cs) Erel,I1(C1) Erel, I2 (Cs) Erel I2 (C2v) Erel, TSI1 Erel TSI2
c-C3 (C2 H)2 –67.53 –70.61 –80.85 –85.27 –39.92 –80.31
c-C3 (CN)2 –61.40 –62.25 –71.07 –77.67 –22.43 –70.75

ΔEexit, I1 (Cs) ΔEexit,I1(C1) ΔEexit, I2 (Cs) ΔEexit, I2 (C2v)

c-C3 (C2 H)2 40.69 43.77 54.01 58.43
c-C3 (CN)2 48.25 49.10 57.91 64.51

Notes. All energies reported in kcal mol 1.

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