| 释义 |
ethylidene Chem.|ɛˈθɪlɪdiːn|
Also 9 -den.
[f. ethyl + -ide + -ene.]
The bivalent hydrocarbon radical CH3CH{b2}.
1859H. Watts tr. Gmelin's Hand-bk. Chem. XIII. 451 Bromide of ethylidene. C4H4Br2. Ibid. 453 The term ethylidene is applied to a radical (C2H4), supposed to exist in a series of compounds derived from aldehyde, and isomeric with the ethylene-compounds. 1952Morton & Hoggarth in E. H. Rodd Chem. Carbon Compounds Ib. xiv. 903 Ethylidenediurethane, CH3CH(NH·CO2Et)2, m.p. 126°, from urethane and acetaldehyde. |