烯

烯

烯 U+70EF, 烯 CJK UNIFIED IDEOGRAPH-70EF ← 烮 [U+70EE] CJK Unified Ideographs 烰 → [U+70F0]

Translingual

Han character

烯 (radical 86, 火+7, 11 strokes, cangjie input 火大大月 (FKKB), four-corner 9482₇, composition ⿰火希)

References

• KangXi: page 671, character 10
• Dai Kanwa Jiten: character 19037
• Dae Jaweon: page 1080, character 7
• Hanyu Da Zidian: volume 3, page 2205, character 4
• Unihan data for U+70EF

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Chinese

simp. and trad.		烯

Glyph origin

Phono-semantic compound (形聲) : semantic 火 (“fire”) + phonetic 希, the latter being derived from 稀 (xī, “rare”) of which it is the phonetic element. This is coined in light of the observed lack of hydrogens (as compared to alkanes) in alkenes and the fact that alkenes are flammable.

Compare 烷 (wán, “alkane”), 炔 (quē, “alkyne”).

Pronunciation

• Mandarin

  (Pinyin): xī (xi¹)

  (Zhuyin): ㄒㄧ

• Cantonese (Jyutping): hei¹

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• Mandarin
  • (Standard Chinese)⁺
    • Pinyin: xī
    • Zhuyin: ㄒㄧ
    • Wade–Giles: hsih¹
    • Gwoyeu Romatzyh: shi
    • IPA ^(key): /ɕi⁵⁵/
• Cantonese
  • (Standard Cantonese, Guangzhou)⁺
    • Jyutping: hei¹
    • Yale: hēi
    • Cantonese Pinyin: hei¹
    • Guangdong Romanization: héi¹
    • IPA ^(key): /hei̯⁵⁵/

Definitions

烯

1. (organic chemistry) alkene

Compounds

丁烯 (dīngxī) 三氯乙烯 丙烯 (bǐngxī) 乙烯 (yǐxī) 氯乙烯 (lǜyǐxī)

烯烴／烯烃 (xītīng) 環戊二烯／环戊二烯 (huánwù'èrxī) 聚丙烯 (jùbǐngxī) 聚乙烯 (jùyǐxī)

聚苯乙烯 苯乙烯 (běnyǐxī) 蒎烯 (pàixī) 薴烯／苧烯 (níngxī)