Wikipedia:
Diazine
Diazine refers to a group of organic compounds having the molecular formula C4H4N2. Each contains a benzene ring in which two of the carbon atoms have been replaced by nitrogen. There are three isomers:
- pyrazine (1,4-diazine)
- pyrimidine (1,3-diazine)
- pyridazine (1,2-diazine)
Diazene, (spelled -ene, not -ine) refers to compounds with the formula RN=NR, also called azo compounds.
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