Two 3D coordination polymers constructed from flexible desymmetric carboxylate and neutral nitrogen ligands

• Two coordination compounds with desymmetric carboxylate and neutral nitrogen ligands have been synthesized.
• The dihedral angles for desymmetric carboxylate ligand can tinily adjust to meet the requirement of coordination.
• The result of SHG measurements revealed that compound 2 has a SHG response.

Two coordination polymers based on a flexible desymmetric ligand precursor H2L have been synthesized, that is, [Ni(L)(dpe)3/2] H2O (1), [Ni2(H2O)(L)2(bpp)2] H2O (2), [H2L = 4,4′-(phenylazanediyl)dibenzoic acid, dpe = 1,2-di(pyridin-4-yl)ethane, bpp = 1,3-di(pyridin-4-yl)propane]. These complexes were characterized by elemental analysis, IR spectroscopy, X-ray single-crystal and power diffraction. In addition, the second nonlinear optical properties of 2 were measured.

The solvothermal reactions afford two coordination polymers from a novel desymmetrized ligand, which was derived from the reported N,N,N′,N′-benzidinetetrabenzoic acid.Figure optionsDownload as PowerPoint slide