6219
J . Phys. Chem. 1988, 92, 6219-6227 olation from a well-established to a nonmeasurable case.
Acknowledgment. We thank Professors D.Schulte-Frohlinde and K. Schaffner and Dr. G.Koltzenburg for their support and D. Kreft, C. Husken, and L. J. Currell for able technical assistance.
Reeistrs No. PA, 611-73-4; EPG, 1603-79-8: CBA, 619-66-9: BA. 100-5‘i-7:EtOH, 64-17-5;0,, 7782-44-7: H,O, 7732-18-5;2-methyl-2propanol, 75-65-0;methanol, 67-56-1: 2-propano1, 67-63-0; i,3-cyclohexadiene. 592-57-4: acetic acid. 64-19-7: a-carboxv-a-hvdroxvben7vl radical, 36877-89-1. -
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