ESR of Gamma Irradiation and Ultraviolet Photolysis Products in Some Tetrasubstituted Ammonium Compounds |
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| Authors: | Fevzi Köksal Recep Tapramaz Mehmet Duran Dülkar |
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| Institution: | Physics Department, Faculty of Arts and Sciences , Ondokuz Mayis University , Samsun, Turkiye |
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| Abstract: | Abstract The electron spin resonance of gamma and ultraviolet irradiated tetrabutylammonium halides CH3(CH2)3]4NX (X=I,Cl,Br), tetrabutylammonium hydrogen sulfate CH3(CH2)3]4NHSO4, tetrabutylammonium periodate CH3(CH2)3]4NIO4, and ultraviolet photolyzed tetramethylammonium iodide, (CH3)4NI, and tetramethylphosphonium iodide, (CH3)4PI have been investigated between 140 and 350 K. The gamma and ultraviolet irradiation damage centers in tetrabutylammonium compounds were attributed to CH3—CH…—CH…—CH2, radicals, and ultraviolet photolysis damage centers in tetramethylammonium and phosphonium iodides were attributed to ?H3 radicals. The g values of both radicals are found to be isotropic and g = 2.0030 and 2.0037 respectively to the methylallyl and the methyl radicals. The hyperfine coupling constants of the free electron to the protons in the radicals are reported and discussed. |
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| Keywords: | ESR ultraviolet photolysis tetrasubstituted |
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