Much attention has been paid to heterocyclic N-containing ligands due to their applicability as bridging
ligands in the synthesis of redox active dinuclear metal complexes. With this aim, we report the
synthesis and full characterization of a novel phthalazine-triazole ligand (1,4-bis(1-methyl-1H-1,2,3-
triazol-4-yl)phthalazine). Moreover, we show that the phthalazine nitrogen atoms of this N-heterocyclic
ligand are more reactive towards alkylating agents than the triazole groups. New ruthenium(II)
complexes containing this ligand have been obtained and characterized both structurally and
electrochemically. The geometry imposed by the ligand allows the placement of two ruthenium centers
in very close proximity so that efficient through-space interactions take place, a concept of crucial
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