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National Repository of Grey Literature 12 records found  previous11 - 12  jump to record: Search took 0.00 seconds. 
Spin-trapping of radical products of H-transfer from oxygeneous donors
 Šafaříková, Lenka ; Polovka, Martin (referee) ; Omelka, Ladislav (advisor)
Within the bachelor thesis the evaluation of experimental material focused on EPR study of spin-trapping of phenoxyl radicals on aromatic nitrosocompounds was performed. It was found that phenoxyl radicals from unhindered phenols add to nitrosogroup in the ortho-position. As a result, the nitroxyl radicals are formed. According to the structure of nitrosocompounds this nitroxyl radicals have the character either of phenoxazinoxyl radicals in the case of nitrosobenzene or derivatives of diphenylnitroxyl radical in the case of nitrosoduren. In the work is also documented the specific behavior of some phenols containing methyl group as the para substituent.
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Spin-trapping of radical products of H-transfer from carboneous donors
 Krkošková, Petra ; Polovka, Martin (referee) ; Omelka, Ladislav (advisor)
On example of special type of a coumarine derivatives and also compounds with character of esters and diesters, which have an –CHR- group between two carbonyl groups or between carbonyl and imino group, the possibility of detection of C-radicals resulting from the homolytic splitting of the C-H bond of a methylene group was studied. PbO2 was used as an appropriate compound, on which surface the coumarine derivatives and the other compounds are decomposed. C-radicals were investigated by means of technique of spin-trapping and by comparison of experimental and simulated EPR spectra.
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National Repository of Grey Literature : 12 records found   previous11 - 12  jump to record:
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2 Polovka, Maroš
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