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)

Abstract

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.

Keywords

• crystal structure
• CoII complex
• aminophosphonate
• organophosphorus materials
• flame retardants