Photodissociation of CH2I2 and the Subsequent Electron Transfer in Its Cluster Formed in Solution
We have studied photodissociation and the subsequent reactions of methylene iodide (CH2I2) upon excitation at 268 nm in acetonitrile and hexane solutions by the femtosecond transient absorption spectroscopy. In addition to dissociation and geminate recombination in the femtosecond region, formation of CH2I2 + is observed in the early picosecond region. The reaction is proposed to occur by electron transfer between photofragment I and CH2I2. This indicates that the solute molecules aggregate even in a dilute solution and they are responsible for the cation formation.
KeywordsTransient Absorption Hexane Solution Transient Absorption Spectrum Geminate Recombination Solvent Cage
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