The Triazole Transition Metal Complexes Synthesis, Structure And Catalytic Combustion Research

Base on characteristic of triazole compounds in energy and stabilization,herein we prepared four triazole Schiff bases[3,5-bi-(salicylideneamino)-1,2,4-triazole(=bstrz), 4-salicylideneamino-1,2,4-triazole(=satrz),4-(4-Cl-phenylmethanimine)-1,2,4-triazole (=ClPhtrz) and 3-(4-Cl-phenylmethanimine)-1,2,4-triazole(=HClPhtrz)]with aminotriazole (3,5-biamino-1,2,4-triazole,4-amino-1,2,4-triazole,3-amino-1,2,4-triazole) and carbonyl-compound (salicylaldehyde,4-chloro-benzaldehyde).Then we synthesized seven transitional metal complexes with the four triazolate Schiff bases as reactant,structures of the complexes were characterized by X-ray single crystal diffraction,and thermal stability were characterized by TG-DTG techniques.In the seven complexes,cobalt(â…¡,â…¢),nickel(â…¡),copper(â…¡) and zinc(â…¡) complexes with guanazole ligand were synthesized with bstrz,cobalt(â…¡) and zinc(â…¡) complexes of triazole Schiff bases were synthesized with satrz ligand,manganese(â…¡) complex of triazole Schiff bases was synthesized with ClPhtrz ligand.In cobalt(â…¡,â…¢),nickel(â…¡) and copper(â…¡) complexes with triazole ligand,triazole ligands with N1,N2-bridging coordination mode form a linear trinuclear cationic complexes,which from supramolecular network through hydrogen bond interactions.In zinc(â…¡) complex of triazole,triazole ligand with N1,N2, N4-bridging coordination mode and SO₄^2- with bidentate bridging coordination mode form a three-dimensional coordination polymer,water molecules and sulfate anions construct the sulfate-water 1D supramolecular chain by hydrogen bonding interactions.In triazole Schiff-base complexes,only N1/N2 coordination modes are employed by Schiff base.In cobalt(â…¡) complexes with triazole Schiff base lihand,3D supramolecular network was constructed by these non-covalentÏ€-Ï€stacking interactions.In manganese(â…¡) complexes with triazole Schiff base lihand,SO₄^2- ligand used tridentate bridging mode to form the one-dimensional coordination polymer,and two-dimensional supramolecular structure was further constructed by hydrogen bond interaction.The complexes and their propellant mixture(binary component system:1/3) were characterized by DSC technology.Compared with the parameters of thermal decomposition characteristics of mixed system and those of the propellant components alone,and found the thermal decomposition temperatures of the propellants were decreased,the results indicated that these complexes may be empolyed as containing energetic catalyst and applied to solid propellant agent.