Picosecond photochemistry of iodine-arene complexes
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Solutions of I2in benzene, toluene, and mesitylene were excited at 532 nm and studied by means of picosecond absorption spectroscopy. An identical series of spectra were recorded for each solution at selected times after excitation at 355 nm, a wavelength that lies within the charge-transfer absorption band of the I2-arene electron donor-acceptor complex. Time-dependent changes of the transient absorption spectra recorded at times from 0 to ~25 ps after excitation imply the formation of the radical-ion pair [AR+-, I2-.] either as an intermediate formed prior to the formation of the I-arene complex or as an intermediate in a reaction that occurs concurrently with the direct dissociation of the I2-arene complex into two I atoms which rapidly complex with arene solvent molecules. © 1985, American Chemical Society. All rights reserved.
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Hilinski, E. F., & Rentzepis, P. M.
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Hilinski, EF||Rentzepis, PM
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