The pale blue colored complex of the formula [Ni 2 (L)(HL)(μ 1,1 -N 3 ) 2 ]ClO 4 (1) has been synthesised in good yield by the reaction of Ni(ClO 4 ) 2 ·6H 2 O with N,N-bis(2-methylpyridyl)-3,5-dimethyl-2-hydroxybenzylamine (HL) in methanol in the presence of sodium azide. The crystal structure of the complex has been determined. The X-ray structure reveals that the metal centres are linked by both an end-on bridged azide ligand as well as through an [O–H⋯O] interacting unit. Magnetic susceptibility measurements confirm the ferromagnetic character of the complex.