Crystal structure of aqua-(1 H-pyrazole-κ N²)(pyridine-2,6-di-carboxyl-ato-κ³O², N, O⁶)copper(II) dihydrate

In the title compound, [Cu(C₇H₃NO₄)(C₃H₄N₂)(H₂O)]·2H₂O, the Cu^II atom is coordinated by three O atoms and two N atoms, provided by a tridentate pyridine-2,6-di-carboxyl-ate (pdc), one pyrazole and one water ligand, forming a slightly distorted square-pyramidal geometry [range of O-Cu-O and O-Cu-N bond angles = 79.55 (8)-166.22 (10)°]. The water mol-ecule is positioned at the apical position. In the crystal, the complex mol-ecule and the two crystallographically independent non-coordinating water mol-ecules are linked into a supra-molecular layer structure parallel to the ab plane via O-H⋯O and N-H⋯O hydrogen bonds.