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Solution assembly of heterocyclic disulfide ligand, 4-ppds {4-ppds = bis[4-(pyridin-4-yl)pyrimidinyl]disulfide}, with Cu(OAc)2 and ZnI2 resulted in two 1D (one-dimensional) coordination polymers 1 and 2, which were well characterized by infrared spectroscopy, elemental analysis, powder X-ray diffraction, single-crystal X-ray diffraction, diffuse-reflectance UV/Vis as well as photoluminescence spectroscopy. Single crystal X-ray crystallography discloses that 1 shows an achiral zigzag chain structure built up by alternate linking of paddlewheel Cu2(OAc)4 dicopper unit and 4-ppds ligand with opposite configurations, whereas 2 exhibits a helical chain structure constructed by alternate linkage of tetrahedral zinc atom and 4-ppds ligand with the same chirality ( P- or M-configuration). It is supposed that the flexible coordination environment around the tetrahedral ZnII ion might be beneficial to homochiral arrangement of 4-ppds ligand. [ABSTRACT FROM AUTHOR]

Abstract: A novel polymeric complex NaCo(o-pba)3(H2O)3 (o-Hpba=2-(1-oxo-1H-2,3-dihydroisoindol-2-yl)benzonic acid) based on racemic N-arylphthalimidine ligand has been prepared and characterized by elemental analysis, spectroscopic and X-ray crystallography methods. In the compound, each Co(II) cation is coordinated by six O atoms from three carboxyl groups of o-pba− and three water molecules in fac-MA3B3 model forming a chiral tripodal Co(o-pba)3(H2O)3 − anion-complex, enantiomeric pairs of which are alternately arranged in head-to-head and tail-to-tail orientations giving rise to a meso-one-dimensional chain-like structure. The compound exhibits high stability and unusual triple-peak luminescence in DMSO solution at room temperature. [Copyright &y& Elsevier]

Graphical abstract Three series of Ln-CPs based on 1,3-adamantanediacetic acid are synthesized and the structure variation is analyzed. The luminescence of Eu- and Tb-CPs is studied. Highlights • Three series (3D, 2D and 1D) of Ln-CPs single crystals were obtained. • The structure variation was analyzed. • The luminescence of Ln-CPs was investigated. Abstract We report the synthesis of 3D Ln-CPs [Tb 2 (ADA) 3 ] n (1a , H 2 ADA = 1,3-adamantanediacetic Acid), 2D Ln-CPs [Ln 2 (ADA) 3 (dmp) 2 ] n ·2EtOH·H 2 O, (Ln3+ = Eu3+, 2a ; Gd3+, 2b ; Tb3+, 2c ; dmp = 4,7-dimethyl-1,10-phenanthroline), and 1D Ln-CPs [Ln(ADA)(HADA)(H 2 O)] n (Ln3+ = Eu3+, 3a ; Gd3+, 3b ; Tb3+, 3c), by introducing the ligand H 2 ADA. The Ln-CPs are characterized by single-crystal X-ray diffraction, PXRD, TGA, elemental analysis and FT-IR. Structure variation is analyzed and suggestions are given for obtaining different types of structures. Luminescence spectra, lifetimes and quantum yields (QYs) are investigated. [ABSTRACT FROM AUTHOR]