Two discrete cu-complexes constructed from a multidentate N-containing dinucleating ligand

Two comparable discrete complexes [Cu^II(CH₃CN) ₂L₂]·2(ClO₄) 1 and [Cu¹ ₂I₂L₂]· (DMF)₂ 2 were successfully synthesized by the reaction of Cu^II and Cu^I salts with a novel dinucleating ligand 2,5-bis(3-pyridinylmethylthio)-l,3,4- thiadiazole) (L), respectively. Complex 1 presents a single nuclear structure while 2 has a dimeric structure where two Cu^I ions are doubly bridged by halide ions in a μ₂-fashion. Both discrete molecules were outspreaded into a one-dimensional supramolecular chain via aromatic interactions such as C-H⋯π and π-π interactions.