Synthesis, optical and magnetic study of nicotinic acid ligand lanthanum, neodymium and terbium complexes

Three rare earth metal organic complexes have been synthesized by solvothermal method based on La3+, Nd3+ and Tb3+ and polyacid ligand (H2cpna). The results of fluorescence and magnetic test show that the complex [Nd(Hcpna)(cpna)•3H2O]n has weak antiferromagentic property, complex [Tb(Hcpna)(cpna)•3H2O]n not only have weak antiferromagentic property but also has excellent fluorescence properties.