Table 7. Predicted vs Experimental Isotope Effects^a.

		SN2 KIEs
	SN1 EIEs	type a	type b	type c	expt
C1	1.001	1.082	1.036	1.066	1.034
C2	1.020	1.004	1.007	1.001	1.005
C3	1.007	1.001	1.002	0.999	1.000b
C4	1.005	1.001	1.002	1.000	1.002
C5	1.018	1.001	1.006	1.002	0.998

^aOnly the type b S_N2 transition states gave KIE predictions that were in good agreement with experiment. Predictions for the lowest-energy representative of each class are shown. These predictions include a Bell tunneling correction.

^bThe KIE at C3 position is assumed to be 1.000.