Chemistry:Dichloroiodomethane
Dichloroiodomethane (DCIM) is a trihalomethane with the chemical formula CHCl
2I. It is a heavy, nonflammable, transparent pale yellow liquid with a chloroform-like odour.[1] DCIM is soluble in organic solvents like acetone, diethyl ether, ethanol and benzene.[2] It decomposes in contact with air and light. It has been detected in disinfected tap water and is considered to be a contaminant.[3] DCIM has an estimated half-life of 275 years in water.[4]
It was discovered by Georges-Simon Serullas in 1824, two years after his discovery of iodoform.[1]
Synthesis
Many synthesis routes are known. Reaction of chloroform with sodium iodide[5] or iodoethane[6] gives dichloroiodomethane. Older methods include distillation of iodoform with phosphorus pentachloride or mercuric chloride.[1]
References
- ↑ 1.0 1.1 1.2 Leopold Gmelin, Henry Watts, Chloriodoform in Hand-book of Chemistry (1848), pages 337–339
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedd213 - ↑ Emma Goslan, Kenneth Clive Thompson, Simon Gillespie, Disinfection By-products in Drinking Water (2015), Royal Society of Chemistry
- ↑ Liu, David H. F; Liptak, Bela G, Groundwater and surface water pollution, page 57
- ↑ Determination of Dichloroiodomethane in Water (1996)
- ↑ Nariyoshi Kawabata, Masami Tanimoto, Shigehiro Fujiwara. Synthesis of monohalocyclopropane derivatives from olefins by the reaction with trihalomethanes and copper, Tetrahedron, 1979
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