In:
The Journal of Chemical Physics, AIP Publishing, Vol. 54, No. 6 ( 1971-03-15), p. 2641-2645
Abstract:
Radiation damage in 1-bromobutane has been studied by ESR spectroscopy. The use of aligned crystals gives well-resolved spectra which can be clearly assigned to the Br2−.. center and the n-butyl radical. Other unidentifiable paramagnetic species are also produced. A quantitative interpretation of the Br2−. spectrum in the parallel orientation gives the magnetic resonance parameters A (81Br) = 472 G and g = 1.992 in satisfactory agreement with previous studies of Br2−. in single crystals of alkali halides. The spectrum of the n-butyl radical shows equal hyperfine interaction with the two β protons and as in other studies this is interpreted in terms of anisotropic internal rotation about the Cα–Cβ bond. The same two paramagnetic species can be identified in the γ-irradiated 1-bromobutane glass, but the ESR spectrum of the n-butyl radical in this case suggests that the internal rotation is frozen out and the radical adopts a nonsymmetrical configuration. Through the positive assignment of the dihalogen anion, the results provide strong confirmation of dissociative electron capture in the radiolysis of this system.
Type of Medium:
Online Resource
ISSN:
0021-9606
,
1089-7690
Language:
English
Publisher:
AIP Publishing
Publication Date:
1971
detail.hit.zdb_id:
3113-6
detail.hit.zdb_id:
1473050-9
Bookmarklink
