Co(II) and Cd(II) coordination polymers from a semirigid N- and O-mixed donor-containing ligand: Synthesis, characterization, and property

Co(II) and Cd(II) salts react with 3,5-bis(benzimidazol-1-ylmethyl)benzoic acid (HL) under hydrothermal conditions to yield two new complexes, [Co(L)(Cl)]n (1) and {[Cd(L)2]·2.5H2O}n (2), which have been characterized by single-crystal and powder X-ray diffractions, IR, element, and thermogravimetric analysis. Complexes 1 and 2 exhibit structural diversity dependent on different metal salts; 1 has 2-D undulating sheet-like structure with (63) hcb topology and 2 is a 3-D 2-nodal (3,6)-connected flu framework with ()2() topology. Luminescence of 2 was investigated.