{6-[(2-Anilinoethyl)iminomethyl]-2-ethoxyphenolato}(thiocyanato-κN)copper(II)

In the title complex, [Cu(C17H19N2O2)(NCS)], the CuII atom is chelated by the phenolate O atom, the imine N atom and the amine N atom of the N,N′,O-tridentate 2-ethoxy-6-[(2-anilinoethyl)iminomethyl]phenolate ligand, and by the N atom of a thiocyanate anion, forming a distorted CuON3 square-planar geometry. The dihedral angle between the aromatic rings of the ligand is 67.9 (4)°. In the crystal, inversion dimers linked by pairs of N—H⋯O hydrogen bonds occur, generating R 2 2(8) loops.

In the title complex, [Cu(C 17 H 19 N 2 O 2 )(NCS)], the Cu II atom is chelated by the phenolate O atom, the imine N atom and the amine N atom of the N,N 0 ,O-tridentate 2-ethoxy-6-[(2anilinoethyl)iminomethyl]phenolate ligand, and by the N atom of a thiocyanate anion, forming a distorted CuON 3 square-planar geometry. The dihedral angle between the aromatic rings of the ligand is 67.9 (4) . In the crystal, inversion dimers linked by pairs of N-HÁ Á ÁO hydrogen bonds occur, generating R 2 2 (8) loops.
As part of our onging investigations into urease inhibitors (Wang et al., 2009a,b;Wang, 2009), we have synthesized the title compound, (I), a new Cu II complex, and its crystal structure is reported here. The Cu II atom in the complex is chelated by the phenolate O atom, imine N atom, and the amine N atom of 2-ethoxy-6-[(2-phenylaminoethylimino)methyl]phenolate, and by the N atom of a thiocyanate ligand, giving a square planar geometry (Fig. 1). The coordinate bond lengths and angles (Table 1) are typical and are comparable with those observed in other related copper(II) complexes (Hebbachi & Benali-Cherif, 2005;Butcher et al., 2003;Elmali et al., 2000;Warda et al., 1997).

Refinement
H2 was located from a difference Fourier map and refined isotropically, with N-H distance of 0.90 (1) Å. Other H atoms were placed in geometrically idealized positions and constrained to ride on their parent atoms, with C-H distances of 0.93-0.97 Å, and with U iso (H) set at 1.2U eq (C) and 1.5U eq (C17). Fig. 1. The molecular structure of (I), showing displacement ellipsoids drawn at the 30% probability level.

Figures
supplementary materials Crystal data [Cu(C 17

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.