| substituents |
Activation energies, ΔEact (kcal/mol) |
Enthalpy changes, ΔH (kcal/mol) |
| |
Ortho-endo |
Ortho-exo |
Meta-endo |
Meta-exo |
Ortho-endo |
Ortho-oxo |
Meta-endo |
Meta-exo |
| -CH3 |
+11.80 |
+11.42 |
+7.18 |
+9.32 |
-50.85 |
-49.93 |
-52.95 |
-50.68 |
| -OH |
+15.56 |
+14.71 |
+3.76 |
+10.37 |
-47.82 |
-47.82 |
-52.31 |
-49.47 |
| -CN |
+2.66 |
+4.05 |
+2.81 |
+4.68 |
-56.08 |
-55.34 |
-55.44 |
-55.16 |
| -Cl |
+10.65 |
+10.70 |
+4.91 |
+8.40 |
-55.70 |
-54.30 |
-56.19 |
-55.73 |
|
