Pentachlorocyclopropane is a chlorinated cyclopropane with the chemical formula . It is a colourless liquid with a faint minty odour. Pentachlorocyclopropane Stephen W. Tobey and Robert West The University of Wisconsin (1965) It is thermally unstable above 100 °C; decomposition gives 1,1,3,3,3-pentachloropropene by isomerisation.Organic Reaction Mechanisms 1966: An Annual Survey Covering the Literature Dated December 1965 Through November 1966. Page 228 Pentachlorocyclopropane can be obtained by the addition of dichlorocarbene into trichloroethylene in presence of a base.Strain and Its Implications in Organic Chemistry: Organic Stress and Reactivity. (2012). Page 384 Pentachlorocyclopropane itself gives tetrachlorocyclopropene when reacted with a base such as potassium hydroxide by means of dehydrohalogenation.Advances in Alicyclic Chemistry. (2013). Elsevier Science. page 57
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