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nitrile : ウィキペディア英語版
nitrile

A nitrile is any organic compound that has a −CN functional group.〔IUPAC Gold Book (''nitriles'' )〕 The prefix cyano- is used interchangeably with the term nitrile in industrial literature. Nitriles are found in many useful compounds, including methyl cyanoacrylate, used in super glue, and nitrile rubber, a nitrile-containing polymer used in the latex-free laboratory and medical gloves. Nitrile rubber is also widely used as automotive and other seals since it is resistant to fuels and oils. Organic compounds containing multiple nitrile groups are known as cyanocarbons.
Inorganic compounds containing the −C≡N group are not called nitriles, but cyanides instead.〔NCBI-MeSH (''Nitriles'' )〕 Though both nitriles and cyanides can be derived from cyanide salts, most nitriles are not nearly as toxic.
==Structure and basic properties==
The N-C-C skeleton is linear in nitriles, reflecting the sp hybridization of the triply bonded carbon. The C-N distance is short at 1.16 Å, consistent with a triple bond.〔Karakida, Ken-ichi, Tsutomu Fukuyama, and Kozo Kuchitsu. "Molecular Structures of Hydrogen Cyanide and Acetonitrile as Studied by Gas Electron Diffraction" Bulletin of the Chemical Society of Japan 1974, vol. 47, pp. 299-304.〕 Nitriles are polar, as indicated by high dipole moments. As liquids, they have high dielectric constants, often in the 30s.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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