Published November 2001
| Version v1
Journal article
Photochemistry of radical cations: formation of ethanol distonic radical cations
- 1. MGU im. M.V. Lomonosova, Moscow (Russian Federation)
Description
Photochemical reactions of ethanal cation radicals stabilized in SF6 matrix at 77 K and in freon matrix after X radiation with doses ranging from 0.5 to 2 kGy were studied by the methods of ESR spectroscopy and spectrophotometry. Photoinduced transition of classical ethanol cation radicals into distonic ones has been revealed experimentally for the first time and occurrence of reciprocal thermal reaction at 77 K has been ascertained. It is shown that the absence of the reactions mentioned in freon matrix may stem from both high quantum yields of the charge transfer reactions in freon and complexing between ethanal cation radicals and the matrix
Abstract (Russian)
Методами ЭПР спектроскопии и спектрофотометрии изучены фотохимические реакции катион-радикалов этаналя, стабилизированных в матрице SF6 при 77 К и во фреоновой матрице после рентгеновского облучения дозами от 0.5 до 2 кГр. С использованием матрицы SF6 впервые экспериментально обнаружен фотостимулированный переход классических катион-радикалов этаналя в дистонические и установлено протекание обратной термической реакции при 77 К. Показано, что отсутствие такого рода реакций во фреоновой матрице может быть обусловлено как высокими квантовыми выходами реакции передачи заряда во фреоне, так и комплексообразованием катион-радикалов этаналя с матрицейAdditional details
Additional titles
- Original title (Russian)
- Фотохимия катион-радикалов: образование дистонического катион-радикала этаналя
Publishing Information
- Journal Title
- Doklady Akademii Nauk - Rossijskaya Akademiya Nauk
- Journal Volume
- 381
- Journal Issue
- 2
- Journal Page Range
- p. 214-218
- ISSN
- 0869-5652
- CODEN
- DAKNEQ
INIS
- Country of Publication
- Russian Federation
- Country of Input or Organization
- Russian Federation
- INIS RN
- 34045921
- Subject category
- S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
- Descriptors DEI
- ACETALDEHYDE; CATIONS; CHEMICAL RADIATION EFFECTS; CHEMICAL REACTION KINETICS; ELECTRON SPIN RESONANCE; FREONS; PHOTOCHEMICAL REACTIONS; RADIATION DOSES; RADICALS; REACTION INTERMEDIATES; SOLUTIONS; SPECTRA; SULFUR FLUORIDES; TEMPERATURE RANGE 0065-0273 K; X RADIATION
- Descriptors DEC
- ALDEHYDES; CHARGED PARTICLES; CHEMICAL REACTIONS; DISPERSIONS; DOSES; ELECTROMAGNETIC RADIATION; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; HALOGENATED ALIPHATIC HYDROCARBONS; HOMOGENEOUS MIXTURES; IONIZING RADIATIONS; IONS; KINETICS; MAGNETIC RESONANCE; MIXTURES; ORGANIC COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; RADIATION EFFECTS; RADIATIONS; REACTION KINETICS; RESONANCE; SULFUR COMPOUNDS; TEMPERATURE RANGE
Optional Information
- Notes
- 15 refs.; 1 fig.