Abstract
The polymeric title compound, {(C4H12N2)[Zn(C7H3NO4)2(H2O)]·2H2O}n, was obtained by the reaction of zinc(II) nitrate hexahydrate with the proton-transfer compound (pipzH2)(py-2,5-dc) (where pipz is piperazine and py-2,5-dcH2 is pyridine-2,5-dicarboxylic acid) in aqueous solution. Each ZnII atom is coordinated in a distorted octahedral geometry by four O atoms and two N atoms from one water molecule and two (py-2,5-dc)2– ligands, which also act as bridging ligands between ZnII atoms. π–π Stacking interactions between two aromatic rings of (py-2,5-dc)2– fragments, with centroid–centroid distances of 3.4747 (7) and 3.7081 (7) Å are observed. The crystal structure is stabilized by O—H⋯O and N—H⋯O hydrogen bonds.
Highlights
Nitrate hexahydrate with the proton-transfer compound(py-2,5-dc) in aqueous solution
Each ZnII atom is coordinated in a distorted octahedral geometry by four O atoms and two N atoms from one water molecule and two2– ligands, which act as bridging ligands between ZnII atoms. – Stacking interactions between two aromatic rings of2– fragments, with centroid–centroid distances of 3.4747 (7) and
Symmetry codes: (i) −x, y+1/2, −z+1/2; (iii) −x, −y, −z; (iv) −x+1, y+1/2, −z+1/2; (v) −x+1, −y, −z+1; (vi) x+1, −y−1/2, z+1/2; (vii) −x, −y−1, −z
Summary
The polymeric title compound, {(C4H12N2)[Zn(C7H3NO4)2(H2O)]2H2O}n, was obtained by the reaction of zinc(II). The crystal structure is stabilized by O—H O and N—H O hydrogen bonds
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