单词 | superbase |
释义 | superbasen. Chemistry. An extremely strong base (base n.1 14a), esp. one made by the combination of different bases. Cf. superacid n. ΚΠ 1962 E. C. Scott & F. A. Kanda Nature Atoms & Molecules xii. 325 Since NH3 is not an acid, bases that are too strong to exist in water solution..can dissolve in it unchanged. Ammonia solutions of these ‘superbases’ can neutralize acids that are too weak to be neutralized by any base which can exist in water solution. 1973 Jrnl. Amer. Chem. Soc. 95 982/1 At 25–50º, this insoluble saline hydride reacts smoothly to form mono- and dialkylamides, a previously unknown class of extremely vigorous ‘superbases’ soluble in organic solvents. 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. 2009 D. Margetic in T. Ishikawa Superbases in Org. Synthesis ii. 37 All these trisubstituted cyclic or open chain guanidino phosphazenes are expected to be extremely strong superbases. This is a new entry (OED Third Edition, June 2012; most recently modified version published online March 2022). < |
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