hydrazo(-) Chem.
(ˈhaɪdrəzəʊ)
A combining form of hydrazine, denoting the bivalent radical {b1}NH·NH{b1} (not linked to the same atom) or a substituted radical derived from this in which univalent radicals replace one or both of the hydrogen atoms; also used attrib. as an independent word.
| 1872 Jrnl. Chem. Soc. XXV. 694 It also unites with hydrogen, giving rise to hydrazophenylene, C12H10N2. 1877 Ibid. i. 307 On boiling the hydrazo-compound with hydrochloric acid, the isomeric dibromobenzidine..is obtained. 1907 Chem. Abstr. I. 498 (heading) Hydrazo derivatives. 1955 [see hydrazide]. 1958 Packer & Vaughan Mod. Approach Org. Chem. xviii. 608 Azoxybenzene gives hydrazobenzene but not azobenzene with alkaline reducing agents. |