| 释义 |
nitronium Chem.|naɪˈtrəʊnɪəm|
[mod.L. (coined in Ger. by A. Hantzsch 1925, in Ber. d. Deut. Chem. Ges. LVIII. 943): see nitro- and -onium.]
†a. The cation which was supposed to be formed by ionization in pure nitric acid and formulated as [NO(OH)2]+ or [N(OH)3]2+. Obs.
1925Chem. Abstr. XIX. 2312 The fairly high cond[uctivity] of pure HNO3 is probably due not to ionization of H+ and NO3-, but to formation of ‘nitronium nitrate’ [NO(OH)2][NO3] or [N(OH)3][NO3]2.
b. The cation NO2+, which is the nitrating agent in mixtures of concentrated nitric acid with another strong acid and is formed by the dissociation of nitric acid itself.
1946R. J. Gillespie et al. in Nature 5 Oct. 480/1 The freezing point evidence..provides an unambiguous proof that the cation into which nitric acid is actually converted in sulphuric acid is..the nitronium ion, NO2+. 1961Aeroplane CI. 549/2 New oxidizers such as nitronium perchlorate are being applied experimentally in propellents containing well established binder systems. 1972S. J. Weininger Contemp. Org. Chem. xv. 371 Salts of the nitronium cation containing nonnucleophilic anions may be prepared and..used as nitrating agents. |