Syntheses and Characterizations of Two New Coordination Polymers Based on Dicarboxylate and Nitrogen-contained Mixed Ligands

Two new carboxylate coordination polymers [Ni(2,3'-oba)(bib)](n)] and [Mn(2,4'-oba)(bib)(0.5)](n) (2,3'-oba = 2-(3-carboxyphenoxy)benzoic acid, 2,4'-oba = 2-(4-carboxyphenoxy) benzoic acid and bib = 1,4-bis(2-methyl-imidazol-yl) butane) have been synthesized and characterized by elemental analysis, IR and X-ray single-crystal diffraction studies. Compound 1 crystallizes in monoclinic, space group P2(1)/c, while compound 2 in the triclinic space group P (1) over bar. Compound 1 displays a one-dimensional ladder-like chain. The dinuclear paddle-wheel secondary building units (SBUs) constructed by four 2,4'-oba(2-) ligands in compound 2 are linked by bib into a 2D (4,4) layer structure.