Warming 1 in carbon tetrachloride (0.2 M). 6 Photolysis of 3 (0.1 M) in chloroform at room temperature. 6 Photolysis of di-Zer/-butyl peroxide in tert-butyl alcohol (0.1 M) in the presence of RCONHOC(CH3)3. d Same as footnote c except for the solvent which was CHC13. 6 Degassing had no important effect other than to sharpen the peaks slightly. 1 Estimated accuracy of ±0.05 G. 0 Relative to DPPH (g = 2.0036) with estimated accuracy of ±0.002. center where the carbonyl oxygen atom shares some Soc., 90, 4201 (1968). (7) The INDO calculations were not minimized with respect to geometry. The assumed bond lengths and bond angles were taken from "Tables of Interatomic Distances and Configurations in Molecules and Ions,'' The Chemical Society, London, 1965, or from ref 5.(8) Professor W. Danen has privately communicated to us that his group has observed the esr spectrum of the A-ZerZ-butoxypropionamido radical in ZerZ-butyl alcohol. The observed as was 10.98. The reasons for the discrepancy in as between their laboratories and ours are not apparent at the present time.
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