Five new coordination polymers [Cd(TFSA)(2,2'-bpy)₂]_n (1), [Mn(HFGA)(phen)₂]_n (2), [Co(TFSA)(bpp)₂(H₂O)₂]_n (3), [Zn(TFSA)(bpp)₂(H₂O)₂]_n (4) and [Cu(HFGA)(phen)]_n (5) (TFSA＝tetrafluorosuccinate, HFGA＝hexafluoroglutarate, 2,2'-bpy＝2,2'-bipyridine, phen＝1,10-phenanthroline, bpp＝ 1,3-bis(4-pyridyl)propane) have been synthesized and structurally characterized by X-ray single crystal diffraction. The complexes 1 and 2 have similar 1D chain structures, in which adjacent Cd²⁺ and Mn²⁺ ions are linked by TFSA and HFGA ligands using its two monodentate carboxylate groups, while 2,2'-bipy and phen act as terminal ligands to chelate the Cd²⁺ and Mn²⁺ ion, respectively. The complexes 3 and 4 have similar 1D chain structures, in which adjacent metal ions Co²⁺ or Zn²⁺ are linked by bpp ligands using its two N atoms, while TFSA and HFGA act as terminal ligands using one carboxylate oxygen atom to coordinate the metal(Ⅱ) ion. Complex 5 has a 2D network structure with the topology of {4.8²}, in which the neighbouring Cu²⁺ ions are connected through HFGA ligands using a monodantate/bidentate-bridging mode. All of five complexes are further connected by hydrogen bonds and π-π stacking interactions into 3D supramolecular structures.

Key words: transition-metal complex, tetrafluorosuccinate, hexafluoroglutarate, N-ligand, crystal structure