Merck, 158429-500G, Diiodomethane

Diiodomethane is a solvent used as a halogen bond donor toward metal-bound halides. Diiodomethane (CH₂I₂) is an iodine containing organic compound. Its decomposition in acetonitrile initiated by 310nm light has been investigated. Femtosecond pump-probe spectroscopic and ab initio molecular dynamics simulations studies of the photodecomposition of CH₂I₂ suggest the formation of the isomer of diiodomethane (CH₂I-I) as hot photoproduct. In the atmosphere, it undergoes photolysis in the presence of ozone to afford iodine oxide (IO) which results in the formation of aerosols. Its vacuum ultraviolet (VUV) photoabsorption spectrum has been reported.