alkadienen.
/ˌalkəˈdʌɪiːn/, U.S. /ˌælkəˈdaɪˌin/ Chemistry.
Any unsaturated hydrocarbon that has two carbon–carbon double bonds in its molecule; esp. a straight-chain hydrocarbon of this kind. Cf. diene n.
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the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > dienes
conylene1863
butadiene1893
alkadiene1915
1915 P. E. Spielmann tr. Richter's Org. Chem. (new ed.) I. i. 79 (table) Unsaturated Hydrocarbons... 3. CnH2n−2: Diolefine Series, Alkadiënes [Ger. Diolefinreihe, Alkadiëne].
1931 Jrnl. Chem. Soc. i. 1609 If there are two double linkings, the termination will be diene, and so on. These hydrocarbons will be known generally as alkenes, alkadienes, alkatrienes, etc.
1950 Adv. in Catalysis 2 22 The second type, conjunct polymerization, yields a complex mixture of alkanes, alkenes, alkadienes, cycloalkanes, cycloalkenes, cycloalkadienes, and..aromatic hydrocarbons.
1993 R. W. Howard in D. W. Stanley-Samuelson & D. R. Nelson Insect Lipids 187 In the last two years..several mono- and dimethylalkenes and alkadienes have been reported from flies, ants, and beetles.
2008 E. Stauffer et al. Fire Debris Anal. iv. 97 The resulting products of random scission on polyethylene are a series of alkanes, alkenes, and alkadienes.
This is a new entry (OED Third Edition, September 2012; most recently modified version published online December 2021).
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n.1915