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

One novel dysprosium(III) complex exhibiting distinctive new two-dimensional (2D) topological net based on pyridyl-carboxylate ligand, namely DyL(HL)·2H2O (1) (H2L = 5-((pyridine-3-ylmethyl)amino)isophthalic acid), was obtained by the reactions of the dysprosium nitrate with H2L 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 μ2/μ3-ligands and 5-connected Dy(III) centers is the first example of 2-nodal net of (42.6)(42.67.8) 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.

Graphical abstractOne novel dysprosium complex, namely DyL(HL)·2H2O (1) (H2L = 5-((pyridine-3-ylmethyl)amino)isophthalic acid) was obtained by the reactions of the dysprosium nitrate with H2L in hydrothermal conditions, which show distinctive new topology of 2-nodal net of (42.6)(42.67.8) topology, where the Dy(III) ions act as rare 5-connecting blocks.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► New dysprosium complex based on novel N-O-bifunctional ligand was synthesized. ► Distinctive new topology was demonstrated. ► Non-covalent interactions which play important roles in the structure stabilization was discussed.