ABSTRACT
The asymmetric unit of the title compound, [Ni(C(19)H(16)I(4)N(2)O(2))], comprises half of a Schiff base complex. The Ni(II) atom is located on a twofold rotation axis which also bis-ects the central C atom of the 2,2-dimethyl-propane group of the ligand. The geometry around the Ni(II) atom is distorted square-planar, with a dihedral angle of 21.7â (3)° between the symmetry-related N/Ni/O coordination planes. The dihedral angle between the symmetry-related benzene rings is 27.9â (3)°. In the crystal, short inter-molecular Iâ¯I [3.8178â (9) and 3.9013â (10)â Å] inter-actions are present.
ABSTRACT
In the title compound, [Cu(C(19)H(16)I(4)N(2)O(2))], the Cu(II) atom and the substituted C atom of the diamine segment lie on a crystallographic twofold rotation axis. The geometry around the Cu(II) atom is distorted square-planar, which is supported by the N(2)O(2) donor atoms of the coordinated Schiff base. The dihedral angle between the symmetry-related substituted benzene rings is 29.40â (19)°. In the crystal, a short Iâ¯I [3.8766â (6)â Å] contact is present and links neighbouring mol-ecules into chains propagating along the a axis.
ABSTRACT
The asymmetric unit of the title compound, C(19)H(18)I(4)N(2)O(2), comprises a potentially tetra-dentate Schiff base ligand. The disordered H atoms on the N and O atoms were refined with site occupancies of 0.54â (8)/0.46â (8) and 0.59â (7)/0.41â (7), respectively. The dihedral angle between the benzene rings is 73.3â (3)°. Intra-molecular O-Hâ¯N and N-Hâ¯O hydrogen bonds make S(6) ring motifs. Short Iâ¯I [3.8919â (7)â Å] and Iâ¯Cg [Cg is a ring centroid; 3.911â (2)â Å] contacts are present in the crystal structure. The crystal structure is further stabilized by inter-molecular π-π inter-actions [centroid-to-centroid distance = 3.827â (3)â Å].