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The 2,2′-biphenyl-4,4′-dicarboxylate (H2bpy-4,4′-dc) and 2,2′-Bis(imidazol-1-ylmethyl)-biphenyl (bipb) have been selected as the bridging ligands. One zinc(II) MOF, [Zn(bpy-4,4′-dc)(bipb)]n has been successfully obtained by hydrothermal reaction and synthesis. The molecular structure has been elucidated by single-crystal X-ray diffraction. The complex possesses of 1D block chain [(bpy-4,4′-dc)2(bibp)2Zn4]. Taking advantage of the tetrahedral coordination preference of the Zn metal centers, the connected chains adopt a folding conformation to form a two-dimensional architecture. The complex was further characterized by IR spectroscopy, PXRD pattern, fluorescent spectra, and thermal stability measurements.

Molecule clips, di(2-quinoline-carboxaldehyde)-2,2′-bibenzoyl-hydrazone(H2L), with potential atropisomeric chirality was used as helicand for construction of dinuclear helicates. Reaction of the ligand with Co(NO3)2 and Cu(BF4)2 afforded dinuclear double helical complexes with the metal centers exhibiting the same absolute configurations. Thus the atropisomeric chiral bridging mode is main factor for the ligand to translate chirality of metal centers from one center to another.

The chiral Schiff-base ligand (R)-2-((1-hydroxybutan-2-ylimino) methyl) phenol (H2L) has been used for the synthesis of a dinuclear nickel complex [Ni2(HL)2](CH3COO)2(CH3OH)2 that incorporates two acetate groups and two methanol molecules. The molecular structure has been elucidated by single-crystal X-ray diffraction, revealing an inorganic core formed by two Ni(II) ions with two ligands surrounded. The complex was further characterized by IR spectroscopy, circular dichroism spectra, and magnetic susceptibility measurements. Magnetic data analyses indicate the substantial antiferromagnetic coupling interactions between the magnetic centers.

Two closed-shell d 10 metal ions complexes Cd 2 (L) 2 (I) 4 (1) and Zn 2 (L) 2 (Cl) 4 (DMF) 2 (2) were prepared from molecular clips, 2,2′-bis(benimidazol-1-ylmethyl)-biphenyl (L), and structurally characterized to investigate the structures. Both compounds 1 and 2 are bimetallic supramolecular rectangles in which two L ligands are connected by two tetrahedral coordinated metal ions. These units are connected together through weak π π interaction, and 1 and 2 are crystallized in P2(1)/c and P-1 space group, respectively. Solid state fluorescent measurements exhibit the presence of ligand-based emission at 407 and 370 nm of compounds 1 and 2, respectively.