Abstract
Abstract γ-Radiation induced decomposition of CH2I2 dissolved in 3-methyl pentane was examined at 77 K and 300 K using optical absorption spectroscopy and product analysis in order to understand the general features of radiation chemical behaviour of polyhalides. Two new bands absorbing at 385 nm and 570 nm were found following irradiation at 77 K. The 385 nm band was identified as due to CH2I2 +. Effects caused by γ-dose rate, irradiation temperature, ionic and free radical scavengers on the yield of the products CH2I, I2 and RI were estimated. A mechanism to explain these observations has been suggested.
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