Accession Number : AD0479482
Title : PRODUCTION, ISOLATION AND IDENTIFICATION OF THE FO, FO2 AND FO3 RADICALS. PART 1.
Descriptive Note : Final summary rept. 1 Oct 63-30 Nov 65,
Corporate Author : TEMPLE UNIV PHILADELPHIA PA RESEARCH INST
Personal Author(s) : Kirshenbaum, A. D. ; Grosse, A. V.
Report Date : 21 DEC 1965
Pagination or Media Count : 61
Abstract : The oxygen fluorides and O2BF4 have been used as sources of free radicals. O2F2 produces two epr signals at 77 K. These signals are due to free radicals appearing as intermediate decomposition products and are not due to the original O2F2 or the final decomposition products: O2 and F2. One of the signals indicates a free radical (anisotropic FOO) with an unpaired electron, experiencing a hyperfine interaction with only one fluorine nucleus. The other signal indicates a radical species in the triplet state. O3F2 produces the same two signals as O2F2. The triplet state signal is twice as strong in O3F2 as in O2F2 and the FOO signal is 50 to 100 times as strong. Irradiation of O2F2 samples with Cobalt-60 gamma-rays produces a third signal in addition to the two above. This third signal is thermally unstable at 90 K. OF2 is diamagnetic while O4F2 is highly paramagnetic. Its epr signal is a doublet and is due to the FOO radical. This signal has the isotropic pattern of FFOO. The epr signal obtained for O5F2 is a broad single band signal and a doublet. O2BF4 is highly paramagnetic. Its epr spectrum at 77 K consists of a single asymmetric broad line signal with a peak-to-peak separation of 335 gauss and an average g value of 1.94. (Author)
Descriptors : *FLUORINE COMPOUNDS, *OXYGEN COMPOUNDS, FREE RADICALS, IDENTIFICATION, FLUORIDES, FLUOBORATES, MAGNETIC PROPERTIES, PARAMAGNETIC RESONANCE, CRYOGENICS, HYPERFINE STRUCTURE, ATOMIC ORBITALS, ATOMIC ENERGY LEVELS, GAMMA RAYS, RADIOACTIVE ISOTOPES, COBALT, BAND SPECTRA, PRODUCTION, OZONE, ULTRAVIOLET RADIATION, LINE SPECTRA, GROUND STATE, HYDROGEN COMPOUNDS, X BAND, K BAND, ION BOMBARDMENT, HYDROGEN, DISSOCIATION, ELECTRIC DISCHARGES, ATOMS, HYDROGEN PEROXIDE.
Subject Categories : Organic Chemistry
Atomic and Molecular Physics and Spectroscopy
Distribution Statement : APPROVED FOR PUBLIC RELEASE