Preparation, spectroscopic and acidity properties of two hydrazones: an organic lab experiment

[摘要] An undergraduate organic lab experiment is described based on the preparation of two readily accessible hydrazones. The UV-visible spectra of these N-H acids and of their conjugate bases are employed to illustrate the importance of through-conjugation in determining their acid strength and their internal charge-transfer-band transitions.

[学科分类] 化学（综合）

[关键词] polynitrophenylhydrazones;charge-transfer bands;acid-base indicators.