Abstract
In the title compound, [Cu(C7H3NO4)(C3H4N2)(H2O)]·2H2O, the CuII 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.
Highlights
In the title compound, [Cu(C7H3NO4)(C3H4N2)(H2O)]2H2O, the CuII atom is coordinated by three O atoms and two N atoms, provided by a tridentate pyridine-2,6-dicarboxylate, one pyrazole and one water ligand, forming a slightly distorted square-pyramidal geometry [range of O—Cu—O and O—
The water molecule is positioned at the apical position
The complex molecule and the two crystallographically independent non-coordinating water molecules are linked into a supramolecular layer structure parallel to the ab plane via O—H O and
Summary
Metal complexes with the tridentate ligand 2,6-bis[(1Hpyrazol-1-yl)methyl]pyridine are known to be catalysts of polyethylene polymerization (Singh et al, 2003; Watson et al., 1987; Son et al, 2014; Kim & Kang, 2015). 2,6-Bis[(1Hpyrazol-1-yl)methyl]pyridine was oxidized to pyridine-2,6-dicarboxylate (pdc) by metal nitrate (Unuigboje & Anyile, 2007). Metal complexes with the tridentate ligand 2,6-bis[(1Hpyrazol-1-yl)methyl]pyridine are known to be catalysts of polyethylene polymerization (Singh et al, 2003; Watson et al., 1987; Son et al, 2014; Kim & Kang, 2015). The pdc molecule has been selected as a primary dibasic tridentate ligand and a metal complex with pdc was reported to be a new chemical sensor (Mistri et al., 2013). Cu—N bond could be probed (Ang et al, 1991; Chen et al., 2011; Lin et al, 2009; Liu et al, 2005) As part of these continuing studies, the title complex has been synthesized and characterized by single crystal X-ray diffraction
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