| 释义 |
hydrazinium Chem.|haɪdrəˈzɪnɪəm|
[f. hydrazine + -ium b.]
a. The ion H2N{b1}NH3+ derived from hydrazine (or a substituted ion derived from this in which univalent radicals replace one or more of the hydrogen atoms). Usu. attrib.
b. The less common ion H3N+{b1}NH3+ (or a substituted ion derived from this in which univalent radicals replace one or more of the hydrogen atoms). Usu. attrib.
The application of the terms hydrazinium and hydrazonium has been inconsistent. Some authors have favoured using one or other of them (with or without a distinguishing numeral) for both ions, whilst some prefer hydrazinium for N2H6++ and hydrazonium for N2H5+; others would abandon the names entirely. The International Union of Pure and Applied Chemistry recommends hydrazinium(1+), hydrazinium(2+), respectively, for the two ions (Nomencl. Inorg. Chem. (ed. 2, 1971), Rule 3.17).
1927Chem. Abstr. XXI. 2672 These ‘acid products’ really contain hydrazinium salts. 1936Jrnl. Amer. Chem. Soc. LVIII. 1606/2 The ionization constants for the hydrazinium ion as an acid and hydrazinium hydroxide as a base have been determined. 1949,1954[see hydrazonium a, b.]. 1955Chem. & Engin. News 3 Jan. 70/3 A.C. Nixon..suggests that ‘ hydrazonium’ be retained for H2NONH3+ [sic] and ‘hydrazinium’ be applied to +H3N·NH3+. 1957,1966[see hydrazonium c]. 1964J. W. Linnett Electronic Struct. Molecules iv. 64 The NN bond-length in hydrazine, H2N{b1}NH2, is 1·47 Å whereas that in the hydrazinium ion, H3N+{b1}N+H3 , is 1·40 Å. 1966Cotton & Wilkinson Adv. Inorg. Chem. (ed. 2) xii. 335 Two series of hydrazinium salts are obtainable, those of N2H5+ and those of N2H62+. |
