CW-EPR Study of 2,2,4,4-Tetramethyl-3-Pentanone Oxime Single Crystals
Yükleniyor...
Dosyalar
Tarih
2010
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
PERGAMON-ELSEVIER SCIENCE LTD
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The electron paramagnetic resonance (EPR) spectra of gamma irradiated single crystals of 2,2,4,4-tetramethyl-3-pentanone oxime (TPO) have been examined between temperatures of 125 and 450 K. The spectra were found to be both dependent on temperature and orientation of single crystals with magnetic field. We attributed radiation damage centers to iminoxy radicals (RC = (N) over dotO). There are two similar group of splitting in the spectra because of conformational isomers (R1, R2) of iminoxy radicals produced by gamma irradiation of TPO. Determined g-factor and hyperfine coupling constants for RI and R2 conformers were found anisotropic with the average values (g(iso))(R1) = 2.01057, (g(iso))(R2)=2.009337. [(a(N))(iso)](R1)=28.09 G, [(a(N))(iso)](R2)=36.34 G, [(a(H))(iso)](R2)=9.15 G, respectively.
Açıklama
Anahtar Kelimeler
EPR, Spectroscopic splitting factor, Hyperfine coupling constant, 2,2,4,4-tetramethyl-3-penranone oxime, Iminoxy radical
Kaynak
Radiation Physics and Chemistry
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
79
Sayı
Künye
Sayın, Ü., Yüksel, H., Özmen, A., Birey, M., (2010). CW-EPR Study of 2,2,4,4-Tetramethyl-3-Pentanone Oxime Single Crystals. Radiation Physics and Chemistry, 79, 1220-1224.
doi:10.1016/j.radphyschem.2010.07.051
