1,1'-Azobis-1,2,3-triazole is a moderately explosive but comparatively stable chemical compound[citation needed] which contains a long continuous chain of nitrogen atoms, with an unbroken chain of eight nitrogen atoms cyclised into two 1,2,3-triazole rings.

The two rings are aromatic and form a conjugated system with the azo linkage.

This chromophore allows the trans compound to be isomerised to the cis when treated with an appropriate wavelength of ultraviolet light.

[2] The record was later taken by a 11-nitrogen chain compound synthesized by a group of Chinese researchers.[3][which?]

A branched chain of 11-nitrogen system has also been reported as part of an unstable but highly nitrogen rich azidotetrazole derivative with formula C2N14.