Conformational analysis and stereodynamics of primary acyclic alkyl radicals by EPR spectroscopy

KU Ingold, DC Nonhebel, JC Walton

Index: Ingold, K. U.; Nonhebel, D. C.; Walton, J. C. Journal of Physical Chemistry, 1986 , vol. 90, # 13 p. 2859 - 2869

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Citation Number: 15

Abstract

The EPR spectra of n-alkyl, 2-methylalky1, 2, 2-dimethylalkyl, 2, 2, 3-trimethylbutyl, and 2, 2, 3, 3-tetramethylbutyl radicals indicate that at 90 K they exist in “rigid” conformations with respect to rotation about the C,-C, bonds. The preferred conformations about the C,-C, and C,-C, bonds were deduced by analysis of the p-and yH hyperfine splittings (hfs). 2, 2, 3, 3- Tetramethylbutyl radicals, the only radicals with a CH3 group approximately all-trans with ...