The review provides information on the synthesis, structure, properties, research methods and applications of diaryltriazenes and their complexes with metals. Various derivatives of diaryltriazene compounds are systematized and extensive information on each group is collected.  The structural features of triazenes and their complexes are reported. The review shows that triazenide ligands can bind via nitrogen atom to form monomeric complexes, via chelation to form bidentate complexes, or via bridging between two metal centers to form metallocycles. Metal complexes with diaryl triazenes can be precursors of active catalytic and initiating systems, since the ligands are capable of radical decomposition during the reaction. They can also efficiently catalyze the hydrogenation of ketones and aldehydes, gene­rate hydrogen from acetic acid in CH₂Cl₂ and exhibit catalytic activity in the oxidation of naphthene-paraffin hydrocarbons. The data on biological activity and prospects of practical application of these triazenide complexes are presented. Triazenide complexes of copper, platinum and silver show luminescent properties. It is shown that triazenide complexes are used as antitumor drugs (dacarbazine, temozolomide). The triazenide complexes can also be used as reagents in organic synthesis, for example, in the cyclization of ethynylphenyl-triazenes into indazole and cinnolin heterocycles and others. In separate sections of the review, the structures and properties of complexes of diaryltriazenes with transition, non-transition, noble and rare earth metals are discussed.

doi.org/10.32737/0005-2531-2026-1-13-34