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ESR study of the tricyclohexylmethyl radical

✍ Scribed by Stefan Luff; John R. Morton; Fabrizia Negri; Mamood Sharifi; Leslie H. Sutcliffe

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
494 KB
Volume
33
Category
Article
ISSN
0749-1581

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✦ Synopsis

The ESR spectrum of the tricyclohexylmethyl radical was obtained from tricyclohexylmethyl chloride and was studied in solution in the range 275-455 K. It has a half-life of about 30 min at room temperature. The complex hyperfioe structure of the radical was analysed with the help of MNDOWHF calculations. Hyperfine interactions with three beta protons, twelve gamma protons and six delta protons were resolved. The alpha and the three beta carbon atoms are coplanar. The temperature dependence of the beta and six of the gamma proton hypefine interactions was ascribed to torsional motions of the cyclohexyl rings about the C , 4 , bond. The radical has C,, symmetry, the C, and C, atoms being coplanar. Evidence for the existence of hexacyclohexylethane at about 200 K was obtained for the first time.

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