配体导向二价金属-有机配位聚合物:光致发光和不常见的无序

Ligand-directed Metal(II) Coordination Polymers: Photoluminescence and Unusual Disorder

2,6-dimethyl-4-phenylpyridine-3,5-dicarboxylic acid(H2mppdc,H2L) is employed in coordination chemistry.Two metal-organic coordination polymers with a general formula of M2L2(4,4’-bpy)x(H2O)4-2x(M = Zn or Co,x=1 or 2) are assembled from H2L,4,4’-bipyridine,zinc and cobalt salt under hydrothermal conditions,and characterized by single-crystal X-ray diffraction analyses.Of the crystal structures of title compounds,L ligands,limited in the environment from 4,4’-bipyridine,arrays in head-to-head and head-to-tail modes which are corresponding to the 1-D(1) and 3-D(2) polymeric structures respectively.Interesting disorders occur in the crystal lattice of compound 1.And compound 2 has a 3-D 42·610·83 topology.Solid-state H2L and 1 have expected photoluminescence at room temperature.