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Preferred term

methylene radical  

Definition

  • Methylene (systematically named methylidene and dihydridocarbon; also called carbene) is an organic compound with the chemical formula CH₂ (also written [CH₂]). It is a colourless gas that fluoresces in the mid-infrared range, and only persists in dilution, or as an adduct. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Methylene_(compound))

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http://data.loterre.fr/ark:/67375/MDL-LB0H577C-2

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