Journal of Magnetic Resonance (1969) p. 282 - 295 (1989)
Update date:2022-08-11
Topics:
Tanigaki, Katsumi
Yagi, Mikio
Higuchi, Jiro
Electron spin resonance spectra of 2,2'-, 3,3'- and 4,4'-difluorobiphenyls (2DFBP, 3DFBP, and 4DFBP, respectively) in their phosphorescent triplet states have been studied in various matrices at 77 K.Two sets of peaks corresponding to the s-cis and s-trans conformers are observed for 2DFBP and 3DFBP.By using a stretched poly(vinyl alcohol) film as a host, the observed individual peaks are assigned.The 19F hyperfine splitting is obtained for 2DFBP and 4DFBP with a microwave magnetic field parallel to an external magnetic field (B<*>Brf), which is different from the conventional resonance condition of B<*>Brf.
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