Structural modulation of Co(II) coordination polymers with flexible bis(benzimidazole) and different dicarboxylate ligands

Synthesis, crystal structures, luminescence and catalytic properties of two d10 metal coordination polymers constructed from mixed ligands

“…Selective design of organic ligands is usually crucial for the formation of these novel coordination frameworks. In recent years, the flexible bis(benzimidazole) ligands have been used as classic N-containing ligands coordinating to metal centers to generate more robust and intricate networks [7][8][9]. Semirigid N-donor ligand 1,4-bis(2-methylbenzimidazol-1-ylmethyl)benzene (bmb) with a spacer of -(CH 2 -Ph-CH 2 )-and two freely rotating methylbenzimidazol arms have attracted much attention within coordination and supramolecular chemistry by our and other groups, due to their good http://dx.doi.org/10.1016/j.saa.2014.12.058 1386-1425/Ó 2014 Elsevier B.V. All rights reserved.…”

CRYSTAL STRUCTURE AND FLUORESCENCE OF A 2D CADMIUM(II) COORDINATION POLYMER BASED ON FLEXIBLE bis(2-METHYLBENZIMIDAZOLE) AND BENZENEDICARBOXYLATE Co-LIGANDS

“…The assembly and structures of coordination polymers are greatly affected by the organic ligands, the nature of the metal ions, the pH value, the solvent system, and so on [ 5,6 ]. The selection of appropriate organic ligands is undoubtedly the vital one and considerable effort has been devoted to design linkers containing N-and O-donors [7][8][9]. The flexible bis(2-methylbenzimidazole) ligands with (-CH 2 -) n (n = 2, 3, 4, 5, 6) spacers, representing of classic N-containing organic linkers, have been widely used for the construction of metal coordination polymers with charming structures, owing to the Àexible nature of the alkyl spacer, which allows those ligands to bend and rotate freely so as to conform to the coordination geometries of central metal ions and exhibit versatile coordination conformations [ 10,11 ].…”

CRYSTAL STRUCTURE AND FLUORESCENCE OF A 1D ZINC(II) COORDINATION POLYMER BASED ON A SEMI-RIGID bis(BENZIMIDAZOLE) LIGAND

“…The organic aromatic carboxylate ligands as O-donor bridging ligands have been widely used to construct novel metal-organic coordination polymers owing to their versatile coordination modes and remarkable stability such as 3-nitrophthalic acid (H 2 npht), where the nitro group as an electron-withdrawing component shows the steric hindrance, which may restrict extension of the whole networks and result in the formation of supramolecular structures [10][11][12]. Flexible bis(benzimidazole) derivatives have attracted great attention for crystal engineering and supramolecular chemistry in our and other groups, due to their remarkable coordination ability and flexible conformations [13][14][15]. However, the complexes based on the combination of flexible bis(2-methybenzimidazole)-based ligands with 3-nitrophthalic acid are relatively scarce [ 16 ].…”