PHOTOINDUCED PARAMAGNETISM IN SOLUTIONS OF NITROBENZENE IN TETRAHYDROFURAN

Journal Article · Wed May 15 04:00:00 EDT 1963 · Journal of Chemical Physics (U.S.)

OSTI ID:4702469

Ward, R L

ESR studies are reported of photoinduced paramagnetism in solutions of nitrobenzene in undeuterated and deuterated tetrahydrofuran (THF). The ESR spectrum exhibits a widely spaced set of identical triplets, and the extra proton hyperfine interaction (0.38 plus or minus 0.04 Oe) is due to a single alpha proton of the THF molecule. The experiments of Lagercrantz and Yhland with trinitrobenzene were also repeated, and the following mechanism for the production of the paramagnetic species is proposed: Light irradiation causes the nitro group to abstract an alpha hydrogen atom from the THF molecule, and the resulting THF free radicais rapidly dimerize or disproportionate, leaving a neutral nitrobenzene free radical in solution. The radical has a totai decay time of approximates 2 sec and is suspected to reside on an oxygen atom. (D.L.C.)

• Research Organization: Univ. of California, Livermore
• NSA Number: NSA-17-028970
• OSTI ID: 4702469
• Report Number(s): UCRL-7135-T; 0021-9606
• Journal Information: Journal of Chemical Physics (U.S.), Journal Name: Journal of Chemical Physics (U.S.) Vol. Vol: 38; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

ALLOTROPY
ATOMS
BENZENE
CHEMISTRY
DECAY
DEUTERIUM COMPOUNDS
ELECTRONS
FREE RADICALS
FURANS
HYDROGEN
INTERACTIONS
IRRADIATION
ISOMERS
MAGNETISM
MOLECULES
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXYGEN
OXYGEN COMPOUNDS
PARAMAGNETISM
PHOTOCHEMISTRY
PROTONS
REACTION KINETICS
RESONANCE
SOLUTIONS
SPECTRA
SPIN