Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 7 (July 2013)

metal-organic compounds

Acta Cryst. (2013). E69, m358-m359    [ doi:10.1107/S1600536813014876 ]

Poly[[tetra­aqua­tetra­kis­[[mu]3-5-(pyridine-4-carboxamido)­isophthalato]nickel(II)diterbium(III)] tetra­hydrate]

Y.-F. Deng, M.-S. Chen, C.-H. Zhang and X. Nie

Abstract: In the title compound, {[NiTb2(C14H8N2O5)4(H2O)4]·4H2O}n, the TbIII ion is coordinated by one water mol­ecule and seven O atoms from four 5-(pyridine-4-carboxamido)­isophthalate (L) ligands in a distorted square-anti­prismatic arrangement, while the NiII ion, lying on an inversion center, is six-coordinated in an octa­hedral geometry by two pyridine N atoms, two carboxyl­ate O atoms and two water mol­ecules. One L ligand bridges two TbIII ions and one NiII ion through two carboxyl­ate groups and one pyridine N atom. The other L ligand bridges two TbIII ions and one NiII ion through two carboxyl­ate groups, while the uncoordinating pyridine N atom is hydrogen bonded to an adjacent coordinating water mol­ecule. Extensive O-H...O, N-H...O and O-H...N hydrogen bonds play an important role in stabilizing the crystal structure.

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