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of great current interest due to their potential properties for ion exchange, gas storage, molecular sensing, and catalysis.1,2 Many efforts have been devoted to investigating new synthetic strategies using novel rigid or flexible spacer ligands.3,4 In our previous attempt to investigate the design and control of the self-assembly of coordination polymers with flexible bridging ligands, we synthesized different dimensional structures from different zinc salts with the flexible ligand 1,3-bis(4pyridyl)propane.5 In this study, we employed zinc chloride to continuously examine the counter-anion effect in combination with the same ligand. We report here on the crystal structure of a coordination polymer, [ZnCl2(N2C13H14)]n (N2C13H14 = 1,3bis(4-pyridyl)propane). All chemicals used were of analytical reagent grade, and were used directly without further purification. Colorless crystals were obtained from a direct diffusion technique in which an aqueous solution of ZnCl2 was carefully layered by a methanol solution of N2C13H14. The X-ray diffraction data for the title compound were collected on a Bruker SMART AXS diffractometer equipped with a monochromator in the Mo Kα (λ = 0.71073 Å) incident beam. A colorless crystal was mounted on a glass fiber. The crystal and experimental data are given in Table 1. The CCD data were integrated and scaled by using the Bruker-SAINT software package, and the structure was solved by the direct method and refined by using SHEXTL V6.14. The atomic coordinates for non-hydrogen atoms are listed in Table 2, and the selected bond distances and angles are listed in Table 3. All hydrogen atoms were placed at the calculated positions. x203 ANALYTICAL SCIENCES 2005, VOL. 21

Crystal Structure of One-dimensional [ZnCl2(N2C13H14)]n (N2C13H14 = 1,3-bis(4-pyridyl)propane)