catena-Poly[[aqua(5,5′-dimethyl-2,2′-bipyridine-κ2 N,N′)copper(II)]-μ-2,2′-oxydibenzoato-κ2 O:O′]

In the title compound, [Cu(C14H8O5)(C12H12N2)(H2O)]n, the CuII ion is pentacoordinated in a square-pyramidal geometry. Two N atoms of the chelating 5,5′-dimethyl-2,2′-bipyridine (dbp) ligand and two O atoms of two different 2,2′-oxydibenzoic (odb) ligands occupy the basal plane while the water O atom completes the square-pyramidal geometry at the apical site. The non-water N2O2 donor atoms are nearly coplanar, with a mean deviation from the least-squares plane of 0.0518 (11) Å and the Cu atom is displaced by 0.1507 (11) Å from this plane towards the apical water O atom. Further coordination via the 2,2′-oxydibenzoate anions forms a one-dimensional coordination polymer extending parallel to [010]. In the crystal structure, O—H⋯O hydrogen bonds link the molecules into a two-dimensional supramolecular structure.

In the title compound, [Cu(C 14 H 8 O 5 )(C 12 H 12 N 2 )(H 2 O)] n , the Cu II ion is pentacoordinated in a square-pyramidal geometry. Two N atoms of the chelating 5,5 0 -dimethyl-2,2 0 -bipyridine (dbp) ligand and two O atoms of two different 2,2 0oxydibenzoic (odb) ligands occupy the basal plane while the water O atom completes the square-pyramidal geometry at the apical site. The non-water N 2 O 2 donor atoms are nearly coplanar, with a mean deviation from the least-squares plane of 0.0518 (11) Å and the Cu atom is displaced by 0.1507 (11) Å from this plane towards the apical water O atom. Further coordination via the 2,2 0 -oxydibenzoate anions forms a one-dimensional coordination polymer extending parallel to [010]. In the crystal structure, O-HÁ Á ÁO hydrogen bonds link the molecules into a two-dimensional supramolecular structure.
dbp as ligands in this work.
In the title complex the Cu 2+ ion is is pentacoordinated, with two N atoms of chelating 5,5'-dimethyl-2,2'-bipyridine (dbp) ligand and two O atoms of two different odb ligands in the basal plane and the O atom of water molecule completing the square-pyramidal geometry from the apical site (Fig. 1). The atoms N1, N2, O5 and O2 i [Symmetry code: (i) -x+1, y-1/2, -z+1/2] are nearly coplanar, with a mean deviation from the least-squares plane of 0.0518 (11) Å, and the Cu atom is displaced by 0.1507 (11) Å from this plane towards the apical O atom. Further coordination via the 2,2'-oxydibenzoate anions forms a one-dimensional coordination polymer extending parallel to [010]. In the crystal structure, O-H···O hydrogen bonds link the molecules into a 2D supramolecular structure as shown in Fig. 2.

Refinement
The approximate positions of the water H atoms, obtained from a difference Fourier map, were restrained to ideal water geometry and fixed in the final stages of refinement (O-H 0.85 Å). All other H atoms were included in calculated positions, with C-H bond lengths fixed at 0.93Å (aryl group), 0.96 Å (methyl CH 3 ) and were refined in the riding-model approximation. U iso (H) values were calculated at 1.5 U eq (C) for methyl H atoms and 1.2 U eq (C, O) for the other H atoms. catena-Poly [[aqua(5,5'-dimethyl-2,2'-bipyridineκ 2 Crystal data [Cu(C 14

Special details
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes.
Refinement. Refinement of F 2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F 2 , conventional R-factors R are based on F, with F set to zero for negative F 2 . The threshold expression of F 2 > σ(F 2 ) is used only for calculating Rfactors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F 2 are statistically about twice as large as those based on F, and R-factors based on ALL data will be even larger.