A series of divalent metal complexes with mixed 5-(imidazol-1-ylmethyl)isophthalic acid and N-donor ligands: Synthesis, characterization and property

Eight complexes with different 3d metal centers and auxiliary ligands, [Cu(L)(py)] (1), [Cu(L)(bpy)]·1.5H2O (2), [Mn(L)] (3), [Mn(L)(pybim)]·3H2O (4), [Ni(L)(bpy)]·2H2O (5), [Ni(L)(phen)]·2H2O (6), [Ni(L)(bpe)(H2O)]·2H2O (7) and [Zn(L)(bpy)]·2H2O (8) [H2L = 5-(imidazol-1-ylmethyl)isophthalic acid, py = pyridine, bpy = 2,2′-bipyridine, pybim = 2-(pyridin-2-yl)-1H-benzo[d]imidazole, phen = 1,10-phenanthroline, bpe = 1,2-di(pyridin-4-yl)ethylene] were obtained under hydrothermal conditions and characterized by single crystal and powder X-ray diffractions, IR, elemental and thermogravimetric analyses. Complex 1 is a 3-connected uninodal 2D network with (4.82) topology, while 2, 4, 6 and 7 display 3-connected uninodal 2D network with (63) hcb topology, 3 exhibits a (5,5)-connected binodal 3D net with (45)(65) topology, 5 and 8 have 1D double-chain structures. The influence of metal centers and auxiliary ligands on the structures of resultant complexes is discussed. Magnetic property of 3 and luminescence of 8 were investigated.

Eight new coordination polymers with 5-(imidazol-1-ylmethyl)isophthalate and different auxiliary ligands have been obtained and found to show different structures. The results revealed that the auxiliary ligand, metal centers have remarkable impact on the structure of the resultant complexes.Figure optionsDownload as PowerPoint slide