Synthesis and magnetic property of a one-dimensional 3d-4f heterometallic triple-chain complex

► One-Dimensional heterometallic triple-chain complexes with both transition metal and lanthanide ions are very few and novel. ► The substitution method by diamagnetic ions is very effective in investigating the nature of Cu2+···Tb3+ interactions. ► Antiferromagnetic couplings exist between Cu2+ and Tb3+ ions in CuTb2 complex.