A new dysprosium(III) complex based on novel pyridyl-carboxylate ligand: Hydrothermal synthesis, crystal structures and distinctive new topology

摘要

One novel dysprosium(III) complex exhibiting distinctive new two-dimensional (2D) topological net based on pyridyl-carboxylate ligand, namely DyL(HL)·2H _2O (1) (H _2L = 5-((pyridine-3-ylmethyl) amino)isophthalic acid), was obtained by the reactions of the dysprosium nitrate with H _2L under hydrothermal condition. In the structure of complex 1, the metal centers act as rare 5-connected topological blocks and the 2D layer consisted of μ _2/μ _3-ligands and 5-connected Dy(III) centers is the first example of 2-nodal net of (4 ~2.6)(4 ~2.6 ~7.8) topology. In complex 1, the 2D layers are further stacked to form its three-dimensional structure, which is stabilized by abundant non-covalent interactions including π?π interactions between its aromatic benzene and pyridine rings as well as various hydrogen bonds.