pentynen.

Brit.

/ˈpɛntʌɪn/, U.S.

/ˈpɛnˌtaɪn/

Forms: 1800s– pentine, 1900s– pentyne.

Origin: Formed within English, by derivation. Etymons: penta- comb. form, -yne suffix.

Etymology: < penta- comb. form + -yne suffix.

Chemistry.

Originally: any of a number of unsaturated hydrocarbons with the formula C₅H₈. Now spec.: an alkyne with this formula, esp. (also 1- pentyne) the unbranched isomer CH≡CCH₂CH₂CH₃.

ΘΚΠ

the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > alkynes > straight-chained, by number of carbon atoms > five

quintine1868

valerylene1868

pentyne1877

1877 H. Watts Fownes's Man. Chem. II. 63 Valerylene or Pentine, C₅H₈. Of this hydrocarbon two modifications are known.

1884 Jrnl. Chem. Soc. 45 419 The pentine obtained from the terpenes is identical with isoprene.

1934 Jrnl. Amer. Chem. Soc. 56 2064/1 Kirrmann found that 1-bromoheptene gave traces of pentyne.

1945 Jrnl. Res. Nat. Bureau Standards 35 475 Neither calorimetric data nor complete spectroscopic data for any of the pentynes were available.

1992 Organometallics 11 73/1 It was found that ethylene and 1-pentyne compete similarly with each other.

This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2022).

单词	pentyne
释义	pentynen. Brit. /ˈpɛntʌɪn/, U.S. /ˈpɛnˌtaɪn/ Forms: 1800s– pentine, 1900s– pentyne. Origin: Formed within English, by derivation. Etymons: penta- comb. form, -yne suffix. Etymology: < penta- comb. form + -yne suffix. Chemistry. Originally: any of a number of unsaturated hydrocarbons with the formula C₅H₈. Now spec.: an alkyne with this formula, esp. (also 1- pentyne) the unbranched isomer CH≡CCH₂CH₂CH₃. ΘΚΠ the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > alkynes > straight-chained, by number of carbon atoms > five quintine1868 valerylene1868 pentyne1877 1877 H. Watts Fownes's Man. Chem. II. 63 Valerylene or Pentine, C₅H₈. Of this hydrocarbon two modifications are known. 1884 Jrnl. Chem. Soc. 45 419 The pentine obtained from the terpenes is identical with isoprene. 1934 Jrnl. Amer. Chem. Soc. 56 2064/1 Kirrmann found that 1-bromoheptene gave traces of pentyne. 1945 Jrnl. Res. Nat. Bureau Standards 35 475 Neither calorimetric data nor complete spectroscopic data for any of the pentynes were available. 1992 Organometallics 11 73/1 It was found that ethylene and 1-pentyne compete similarly with each other. This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2022). < n.1877
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