Diazines

In organic chemistry, diazines are a group of organic compounds having the molecular formula . Each contains a benzene ring in which two of the C-H fragments have been replaced by isolobal nitrogen. There are three structural isomers: pyridazine (1,2-diazine) 45px pyrimidine (1,3-diazine) 45px pyrazine (1,4-diazine) 45px