Synthesis and crystal structure of bis­(1H-benzo[d][1,2,3]triazole-κN2){2,2′-[N-(phenyl­phospho­r­yl­methyl-κO)aza­nedi­yl]di­acetato-κ3O,N,O′}cobalt(II)–1H-benzo[d][1,2,3]triazole (1/1)

In the title compound, [Co(C11H12NO6P)(C6H5N3)2]·C6H5N3, the 2,2′-[N-(phenyl­phospho­rylmethyl-κO)aza­nedi­yl]di­acetate dianion N,O,O′,O′′-chelates the CoII cation and two 1H-benzo[d][1,2,3]triazole mol­ecules coordinate to the CoII cation to complete the slightly distorted octa­hedral coordination. In the crystal, classical O—H⋯O, N—H⋯O hydrogen bonds and weak C—H⋯N hydrogen bonds link the mol­ecules into a three-dimensional supra­molecular architecture. π–π stacking between the triazole and benzene rings and between the benzene rings is also observed in the crystal.