摘要 : Four new coordination polymers of cobalt(H) and nickel(II) with functionalized dicarboxylate ligands, namely, [(CoL1)-L-II(2,2'-bpy)(H2O)] (1), [(NiL1)-L-II(2,2'-bpy)center dot H2O (2) [Co-2(II)(L-2)(2)(2,2'-bpy)(2)(H2O)] (3) and ... 展开 Four new coordination polymers of cobalt(H) and nickel(II) with functionalized dicarboxylate ligands, namely, [(CoL1)-L-II(2,2'-bpy)(H2O)] (1), [(NiL1)-L-II(2,2'-bpy)center dot H2O (2) [Co-2(II)(L-2)(2)(2,2'-bpy)(2)(H2O)] (3) and [Ni-2(II)(L-2)(2)(2,2'-bpy)(2)(H2O)] (4), where H2L1 = 2,5-dibenzoylterephthalic, H2L2 = 4,6-bis (4-methylbenzoyl) isophthalic acid and 2,2'-bpy = 2,2'-bipyridine, were synthesized and characterized by elemental analysis, IR spectra and thermogravimetric analysis. Complex 1 exhibits a zigzag chain with a C-H center dot center dot center dot pi interaction between the phenyl ring proton and the phenyl ring of an adjacent chains to form a 2D supramolecular sheet. Complex 2 contains two helical chains which extend into 2D via a C-H center dot center dot center dot pi interaction between the pyridine ring proton and the pyridine ring. Complexes 3 and 4 are isomorphous with helical chains that extend in the same direction and further link to one another by supramolecular forces into a 2D structure. Moreover, magnetic and luminescence properties have been investigated for 1 and 2, respectively. 收起