Two novel 1D lanthanide-carboxylate complexes: Syntheses, crystal structures, magnetic and luminescent properties

Two novel lanthanide complexes, [Nd2(L)6(bipy)(H2O)]n (1) and [Sm2(L)6(bipy)(H2O)]n (2) (HL = 3,5-bis(trifluoromethyl)benzoic acid, bipy = 2,2′-bipyridine), have been solvothermal synthesized and characterized by single-crystal X-ray diffraction, infrared spectroscopy, element analyses and powder X-ray diffraction. Single-crystal X-ray diffraction measurements reveal that the crystal structures are isostructural, crystallizing in the orthorhombic space group P-1 and they consist of linear tetrameric Ln4 units which are connected through carboxylate of L ligands into a one-dimensional (1D) zigzag chain and spread into 2D supramolecular (4,4) sql net. Furthermore, magnetic studies reveal antiferromagnetic behavior for complex 1. The luminescent properties of 2 were also studied.