Diazole

{{Short description|Class of chemical compounds which contain five-membered aromatic ring with two nitrogen heteroatoms}}

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Diazole refers to either one of a pair of isomeric chemical compounds with molecular formula C₃H₄N₂, having a five-membered ring consisting of three carbon atoms and two nitrogen atoms.[http://www.merriam-webster.com/dictionary/diazole Diazole] {{Webarchive|url=https://web.archive.org/web/20131224110226/http://www.merriam-webster.com/dictionary/diazole |date=24 December 2013 }}, merriam-webster.com

The two isomers are:

• Imidazole (1,3-diazole) image:Imidazole chemical structure.png
• Pyrazole (1,2-diazole) image:Pyrazole 2D numbered.svg