π-π Stacking and ferromagnetic coupling mechanism on a binuclear Cu(II) complex.

The ferromagnetic couplings were observed in an unpublished crystal that consists of binuclear copper(II) complexes, namely, [Cu(2)(μ(1,3)-SCN)(2)(PhenOH)(OCH(3))(2)(HOCH(3))(2)] (PhenOH = 2-hydroxy-1,10-phenanthroline), and in the binuclear complex Cu(ii) ion assumes a distorted octahedral geometry and thiocyanate anion functions as a μ(1,3)-SCN(-) equatorial-axial (EA) bridging ligand. The analysis for the crystal structure indicates that there are three types of magnetic coupling pathways, in which two pathways involve π-π stacking between the adjacent complexes and the third one is the μ(1,3)-SCN(-) bridged pathway. The fitting for the data of the variable-temperature magnetic susceptibilities shows that there is a ferromagnetic coupling between adjacent Cu(II) ions with J = 50.

Aqua-(propane-dioato-κO,O)[2-(1H-pyrazol-1-yl-κN)-1,10-phenanthroline-κN,N']nickel(II) trihydrate.

In the title mononuclear complex, [Ni(C(3)H(2)O(4))(C(15)H(10)N(4))(H(2)O)]·3H(2)O, the metal center is coordinated in a distorted NiN(3)O(3) geometry. In the crystal structure, inter-molecular O-H⋯O hydrogen bonds link the components into a two-dimensional network. In addition, there are weak π-π stacking inter-actions between symmetry-related phenanthroline rings, with a centroid-centroid distance of 3.

Dichlorido(2-meth-oxy-1,10-phenanthroline-κN,N')zinc(II).

There are two molecules of the title complex, [ZnCl(2)(C(13)H(10)N(2)O)], in the asymmetric unit. Each Zn atom assumes a distorted tetra-hedral ZnN(2)Cl(2) coordination geometry. There are weak π-π stacking inter-actions between adjacent 1,10-phenanthroline rings [centroid-centroid distances = 3.

(2-Meth-oxy-1,10-phenanthroline-κN,N')bis-(thio-cyanato-κN)zinc(II).

In the title complex, [Zn(NCS)(2)(C(13)H(10)N(2)O)], the Zn(II) ion is in a distorted tetra-hdral ZnN(2)Cl(2) coordination environment. In the crystal structure, there is a weak π-π stacking inter-action between adjacent 1,10-phenanthroline rings, with a pyridine centroid-centroid distance of 3.6620 (15) Å.

Bis(2-dimethylamino-1,10-phenanthroline-κN,N')bis-(thio-cyanato-κN)nickel(II) methanol disolvate.

In the title complex, [Ni(NCS)(2)(C(14)H(13)N(3))(2)]·2CH(3)OH, the Ni(II) atom lies on a crystallographic twofold rotation axis and is in a slightly distorted octa-hedral NiN(6) coordination environment. The crystal structure is stabilized by a combination of weak π-π stacking inter-actions between symmetry-related 1,10-phenanthroline ligands [centroi-centroid distance between benzene rings = 3.5936 (18) Å] and weak O-H⋯S, C-H⋯O and C-H⋯S hydrogen bonds between methanol and complex mol-ecules.