What is "triazole"

n. (context chemistry English) either of two isomeric heterocyclic compounds having a five-membered ring with three nitrogen atoms and two double bonds in the ring; any organic derivative of these compounds

A triazole (Htrz) refers to any of the heterocyclic compounds with molecular formula CHN, having a five-membered ring of two carbon atoms and three nitrogen atoms. There are two sets of isomers that differ in the relative positions of the three nitrogen atoms. Each of these has two tautomers that differ by which nitrogen has a hydrogen bonded to it:

• 1,2,3-Triazole

1H-1,2,3-Triazole Structural FormulaV.1.svg|1H-1,2,3-Triazole 2H-1,2,3-Triazole Structural FormulaV.1.svg|2H-1,2,3-Triazole

• 1,2,4-Triazole

1H-1,2,4-Triazole Structural FormulaV.1.svg|1H-1,2,4-Triazole 4H-1,2,4-Triazole Structural FormulaV.1.svg|4H-1,2,4-Triazole