propadienen.

Brit.

/ˌprəʊpəˈdʌɪiːn/, U.S.

/ˌproʊpəˈdaɪˌin/

Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: propane n., di- comb. form, -ene comb. form.

Etymology: < propa- (in propane n.) + di- comb. form + -ene comb. form, after German Propadien (1893 in the passage translated in quot. 1894). Compare later diene n.

Chemistry.

A gaseous unsaturated hydrocarbon, isomeric with propyne. Also called allene.Formula: CH₂=C=CH₂.

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the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > propadiene

allene1875

propadiene1894

1894 G. M'Gowan tr. A. Bernthsen Text-bk. Org. Chem. (ed. 2) i. 66 Allene ('O[fficial] N[ame]' Propadiene [Ger. Allen (Propadien)]),..is obtained by the electrolysis of itaconic acid.

1925 Science 7 Aug. 138 Propadiene 20 per cent. and methylacetylene 5 per cent. produce prostration, not true anaesthesia, in 15 to 18 minutes.

1991 Inorg. Chem. 30 430/2 This C₃ unit thus corresponds to the carbon skeleton of propadiene, C₃H₄.

This entry has been updated (OED Third Edition, June 2007; most recently modified version published online March 2022).

单词	propadiene
释义	propadienen. Brit. /ˌprəʊpəˈdʌɪiːn/, U.S. /ˌproʊpəˈdaɪˌin/ Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: propane n., di- comb. form, -ene comb. form. Etymology: < propa- (in propane n.) + di- comb. form + -ene comb. form, after German Propadien (1893 in the passage translated in quot. 1894). Compare later diene n. Chemistry. A gaseous unsaturated hydrocarbon, isomeric with propyne. Also called allene.Formula: CH₂=C=CH₂. ΘΚΠ the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > propadiene allene1875 propadiene1894 1894 G. M'Gowan tr. A. Bernthsen Text-bk. Org. Chem. (ed. 2) i. 66 Allene ('O[fficial] N[ame]' Propadiene [Ger. Allen (Propadien)]),..is obtained by the electrolysis of itaconic acid. 1925 Science 7 Aug. 138 Propadiene 20 per cent. and methylacetylene 5 per cent. produce prostration, not true anaesthesia, in 15 to 18 minutes. 1991 Inorg. Chem. 30 430/2 This C₃ unit thus corresponds to the carbon skeleton of propadiene, C₃H₄. This entry has been updated (OED Third Edition, June 2007; most recently modified version published online March 2022). < n.1894
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