ABSTRACT
The asymmetric unit of the title compound, [Zn(C(19)H(16)Cl(4)N(2)O(2))(H(2)O)], comprises two crystallographically independent mol-ecules. The geometry around the Zn(II) atoms is distorted trigonal-bipyramidal, supported by the N(2)O(2) donor atoms of the tetradentate Schiff base and a coordinating water mol-ecule. The dihedral angles between the benzene rings in the two mol-ecules are 34.10â (15)â Å and 30.61â (15)â Å. In the crystal, neighbouring independent mol-ecules are linked by pairs of O-Hâ¯O hydrogen bonds, forming dimers with R(2) (2)(6) ring motifs, and by O-Hâ¯Cl hydrogen bonds. There are short Clâ¯Cl [3.4728â (16), 3.4863â (16), and 3.388â (1)â Å] contacts present, and mol-ecules are also linked by C-Hâ¯O and π-π [centroid-centroid distance = 3.671â (2)â Å] inter-actions.
ABSTRACT
In the title Schiff base complex, [Cu(C(19)H(16)Cl(4)N(2)O(2))], the geometry around the Cu(II) atom is distorted square-planar defined by the N(2)O(2) donor atoms of the coordinated ligand. The dihedral angle between the substituted benzene rings is 29.95â (16)°. In the crystal, mol-ecules are linked along the b axis, forming individual dimers through C-Hâ¯O inter-actions. The crystal structure is further stabilized by inter-molecular π-π inter-actions [centroid-centroid distance = 3.6131â (17)â Å].
ABSTRACT
In the title compound, [Ni(C(19)H(16)Cl(4)N(2)O(2))], the Ni(II) ion is in a distorted square-planar environment coordinated by two N atoms and two O atoms of the tetra-dentate ligand. The dihedral angle between the benzene rings is 24.8â (2)°. In the crystal, mol-ecules are linked into chains along the b axis by weak C-Hâ¯O and C-Hâ¯Cl inter-actions. An inter-molecular Clâ¯Cl [3.4564â (19)â Å] inter-action is present which is shorter than the sum of the van der Waals radii of Cl atoms (3.50â Å).
ABSTRACT
In the title compound, C(19)H(18)Cl(4)N(2)O(2), a potential tetra-dentate Schiff base ligand, the dihedral angle between the two benzene rings is 48.01â (10)°. The configuration about the two C=N bonds is E and two intra-molecular O-Hâ¯N hydrogen bonds make S(6) ring motifs. In the crystal, mol-ecules are linked along the b axis via inter-molecular C-Hâ¯Cl inter-actions. The crystal structure is further stabilized by an inter-molecular π-π inter-action [centroid-centroid distance = 3.5744â (12)â Å].