单词 | alcoholate |
释义 | alcoholaten. Chemistry. 1. A compound of alcohol with another compound, analogous to a hydrate; esp. a crystalline substance in which alcohol plays a role analogous to that of water of crystallization. Now rare. ΘΚΠ the world > matter > chemistry > crystallography (general) > crystal (general) > [noun] > crystalline compound > specific alcoholate1816 alcoate1828 absinthin1834 nitroaniline1848 nitroanisidine1850 purpurein1864 quinizarin1873 phenazoxine1887 phenanthridine1890 1816 Philos. Mag. 48 145 The alcohol contracts a very intimate union with the strong alkalies, and the alcoholate of potash. 1844 Med. Times: Pharmaceut. No. Sept. 91/3 The alcoholate of aconite, which produced the poisoning, must consequently be a very active pharmaceutical preparation of aconite. 1875 R. Hunt & F. W. Rudler Ure's Dict. Arts (ed. 7) I. 58 Alcoholates are in general rather unstable combinations, and are almost always decomposed by water. 1897 E. A. Ruddiman Incompatibilities in Prescriptions 139 Several cases have been reported where alarming symptoms have been caused by the taking of a teaspoonful of chloral alcoholate. 1922 T. M. Lowry Inorg. Chem. xxxiii. 633 Anhydrous calcium chloride..also unites with alcohol to form an alcoholate, CaCl2,4C2H6O. 1952 L. N. Ferguson Electron Struct. Org. Molecules ii. 6 The ion-dipole bond is much weaker than an ionic bond. In many cases, solvates of crystallization (ammoniates, alcoholates, hydrates) in salts are held by such bonds [sc. the ion-dipole bond]. 2. = alkoxide n. ΚΠ 1857 Chem. Gaz. 1 Dec. 452 Alcoholate of sodium is dissolved in alcohol, boiled with iodide of cetyle until no further separation of iodide of sodium takes place. 1898 Trans. Wisconsin Acad. 11 255 We distinguish the alcoholates as being those chemicals in which the hydrogen atom of the hydroxyl group in an alcohol is replaced by a metal. The name ‘alcoholate’ has been applied in the past..to certain compounds which result from the direct union of the alcohols with many inorganic salts in which the alcohol seems to serve in the same capacity that water of crystallization does in crystals. In our work, however, it has been found more convenient to give to these substances the name ‘addition products’. 1909 E. I. Lewis Elements Org. Chem. ii. 9 The formation of the ethoxide and its hydrolysis in solution seem to indicate that alcohol has acidic properties. For this reason the ethoxide has also been termed sodium alcoholate. 1987 A. Nickon & E. F. Silversmith Org. Chem.: Name Game xiii. 167 If bases turn you on more than acids do, check with Manfred Schlosser's laboratory..for a ‘superbase’ comprised of butyllithium and a potassium alcoholate. 2011 Inorganica Chimica Acta 367 59/2 One molecule of water has been added across the imine function and the resultant alcohol binds in its deprotonated alcoholate form. This entry has been updated (OED Third Edition, September 2012; most recently modified version published online December 2021). < |
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