Schoeller
/
Thermal Rearrangment of Cyclobutylidene to Methylenecyclopropane
Table VIII. Calculated Activation Energies and Relative Rates for the Deprotonation of the C2 and C s Atoms in 1,3-Azolium Svsteis
1.3-imidazolium C2 1,3-oxazolium C2 1,3-thiazolium C2 1,3-phosphazolium C2 1,3-imidazolium C5 I ,3-oxazolium Cs 1,3-thiazolium C5 I ,3-phosphazolium C5
AE,"
E,,b
re1
au
au
k.-,lcdc
0.1203 0.1 139 0.0731
0.7503 0.6872 0.6923 0.7441 0.8936 0.8646 0.8708 0.8975
