Poly[[tetra-aquatetrakis-[μ(3)-5-(pyridine-4-carboxamido)-isophthalato]cobalt(II)digadolinium(III)] tetra-hydrate]

• Published in: Acta crystallographica. Section E, Structure reports online Vol. 67; no. Pt 10; pp. m1431 - m1432
• Main Authors: Deng, Yi-Fang, Chen, Man-Sheng, Zhang, Chun-Hua, Kuang, Dai-Zhi
• Format: Journal Article
• Language: English
• Published: United States International Union of Crystallography 01.10.2011
• Subjects: Metal-Organic Papers
• ISSN: 1600-5368
• DOI: 10.1107/S1600536811038074

In the centrosymmetric polymeric title compound, {[CoGd(2)(C(14)H(8)N(2)O(5))(4)(H(2)O)(4)]·4H(2)O}(n), the Gd(III) cation is coordinated by one water mol-ecule and four pyridine-4-carboxamido-isophthalate (L) anions in a distorted square-anti-prismatic arrangement, while the Co(II) cation, located on an inversion center, is coordinated by two pyridyl-N atoms, two carboxyl-ate-O atoms and two water mol-ecules in a distorted octa-hedral geometry. The asymmetric unit contains two anionic L ligands: one bridges two Gd cations and one Co cation through two carboxyl groups and one pyridine-N atom; the other bridges two Gd cations and one Co cation through two carboxyl groups and the uncoordinated pyridine-N atom is hydrogen-bonded to the adjacent coordinated water mol-ecule. Extensive O-H⋯O and N-H⋯O hydrogen bonds are present in the crystal structure.