Table 1.

Classification of Substrates

Substrate	Substrate Class (Hperoxo)	Substrate Class (Q)	Dipole Moment (D)a
CH4b	nrc	II	0
C2H6d	nde	1	0
Et2Of	II	II	1.10
HCOONa	III	nrc	1.41g
CH3CH2OH	II	I	1.69
CH3OH	II	I	1.70
CH3CH2CHO	III	I or IIh	2.52
CH3CHO	III	II	2.69
CH3NO2	III	III	3.46
CH3CN	III	III	3.92

^aData from (63).

^bData from (23).

^cNo reaction.

^dData from (39).

^eNot determined.

^fData from (26).

^gThis value was determined for HCOOH but should approximate that of HCOONa.

^hFor CH₃CH₂CHO, the KIE was not determined but a linear dependence on substrate concentration was observed, designating this substrate as Class I or Class II.