Abstract
In the centrosymmetric polymeric title compound, {[CoGd2(C14H8N2O5)4(H2O)4]·4H2O}n, the GdIII cation is coordinated by one water molecule and four pyridine-4-carboxamidoisophthalate (L) anions in a distorted square-antiprismatic arrangement, while the CoII cation, located on an inversion center, is coordinated by two pyridyl-N atoms, two carboxylate-O atoms and two water molecules in a distorted octahedral 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 molecule. Extensive O—H⋯O and N—H⋯O hydrogen bonds are present in the crystal structure.
Highlights
In the centrosymmetric polymeric title compound, {[CoGd2(C14H8N2O5)4(H2O)4]4H2O}n, the GdIII cation is coordinated by one water molecule and four pyridine-4-carboxamidoisophthalate (L) anions in a distorted square-antiprismatic arrangement, while the CoII cation, located on an inversion center, is coordinated by two pyridyl-N atoms, two carboxylate-O atoms and two water molecules in a distorted octahedral geometry
The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry
Symmetry codes: (i) −x+2, −y+1, −z+1; (ii) −x+2, −y+1, −z+2; (iii) x, y, z−1; (v) x−1, y, z; (ix) −x+1, −y+1, −z+2; (x) −x+1, −y+1, −z+1; (xi) −x+1, −y,
Summary
O—H O and N—H O hydrogen bonds are present in the crystal structure
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