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Updated: May 31, 2026

04:38
Preparation of Contiguous Bisaziridines for Regioselective Ring-Opening Reactions
Published on: July 28, 2022
Bis{2-[(2-furylmeth-yl)imino-meth-yl]-5-meth-oxy-phenolato-κN,O}zinc(II)
1College of Health Science, Wuhan Institute of Physical Education, Wuhan 430079, People's Republic of China.
Abstract:
In the title complex, [Zn(C(13)H(12)NO(3))(2)], the Zn(II) ion is located on a twofold rotation axis and is coordinated by two bidentate Schiff base ligands in a distorted tetra-hedral environment. The complex mol-ecules are stacked in columns along the b axis through C-H⋯O hydrogen bonds.
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Acidity and Basicity of Alcohols and Phenols
Like water, alcohols are weak acids and bases. This is attributed to the polarization of the O–H bond making the hydrogen partially positive. Moreover, the electron pairs on the oxygen atom of alcohol make it both basic and nucleophilic. Protonation of an alcohol converts hydroxide, a poor leaving group, into water—a good one. The two acid–base equilibria corresponding to ethanol are depicted below.
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Nitrous acid, a weak acid, is prepared in situ via the reaction of sodium nitrite with a strong acid under cold conditions. This nitrous acid prepared in situ reacts with primary arylamines to form arenediazonium salts. Such reactions are known as diazotization reactions. As shown in Figure 1, the formation of arenediazonium salts begins with the decomposition of nitrous acid in an acidic solution to give nitrosonium ions.

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