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单词 anionoid
释义

anionoidadj.

/ˈænɪənɔɪd//əˈnaɪənɔɪd/
Etymology: < anion n. + -oid suffix.
Chem.
Resembling an anion (see quots.).
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the world > matter > chemistry > ions, ionization, or electrolysis > [adjective] > of or relating to ions > of or relating to negatively charged ions > resembling
anionoid1925
the world > matter > physics > electromagnetic radiation > electricity > electrolysis > [adjective] > relating to anions
anionic1922
anionoid1925
anion-active1946
1925 A. Lapworth in Mem. & Proc. Manch. Literary & Philos. Soc. 69 p. xix, Some ions..are shown to have some properties in common and are termed ‘cationoid’... [Some] have other properties in common and are termed ‘anionoid’.
1925 A. Lapworth in Mem. & Proc. Manch. Literary & Philos. Soc. 69 p. xix, The ‘anionoid’ properties of ethylenic hydrocarbons are held to be closely related to Thomson's observation that methyl is frequently observed in vacuum tubes with a positive charge, but never with a negative charge.
1936 Discovery May 162/2 The function of anionoid and kationoid reagents in ionic reactions.
1943 H. Gilman et al. Org. Chem. (ed. 2) II. xxv. 1859 The terms cationoid and anionoid..refer to the characteristic acceptor or donor activity of reactive cations or anions.
1953 C. K. Ingold Struct. & Mech. Org. Chem. v. 203 [Lapworth] likened all reagents either to anions or to cations: an ‘anionoid’ reagent was one which behaved analogously to an anion, or, as Robinson subsequently expressed it, to an ‘active’ anion; and a ‘cationoid’ reagent was one which behaved like a cation, or an active cation.
1958 J. Packer & J. Vaughan Mod. Approach Org. Chem. ii. 57, B is said to be electron-donating, anionoid (anionlike) or nucleophilic.
This entry has not yet been fully updated (first published 1972; most recently modified version published online March 2011).
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adj.1925
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