Dichlorido(3,5,5'-trimethyl-1,3'-bi-1H-pyrazole-κN,N)copper(II).

In the title complex, [CuCl(2)(C(9)H(12)N(4))], the Cu(II) atom exhibits a distorted square-planar coordination geometry involving two chloride ions and two N-atom donors from the bipyrazole ligand. The chelate ring including the Cu(II) atom is essentially planar, with a maximum deviation of 0.0181 (17) Šfor one of the coordinated N atoms. This plane forms a dihedral angle of 30.75 (6)° with the CuCl(2) plane. In the crystal, each pair of adjacent mol-ecules is linked into a centrosymmetric dimer by N-H⋯Cl hydrogen bonds. The crystal structure is stabilized by inter-molecular C-H⋯N and C-H⋯Cl hydrogen bonds and weak slipped π-π stacking inter-actions between symmetry-related mol-ecules, with an inter-planar separation of 3.439 (19) Šand a centroid-centroid distance of 3.581 (19) Å.

Chloridobis[2-(1,5-dimethyl-1H-pyrazol-3-yl-κN)-1-methyl-1H-imidazole-κN]copper(II) chloride methanol hemisolvate tetra-hydrate.

In the title compound, [CuCl(C(9)H(12)N(4))(2)]Cl·0.5CH(3)OH·4H(2)O, the Cu(II) ion adopts a distorted trigonal-bipyramidal coordination arising from two bidentate ligands and a Cl(-) anion. The two heterocyclic ligands are planar with dihedral angles of 3.4 (1) and 0.7 (1)° between the pyrazole and imidazole rings. In the crystal, water mol-ecules and uncoordinated chloride anions form an O-H⋯Cl and O-H⋯O hydrogen-bonded sheet parallel to (100) which lies between two layers of complex mol-ecules. The packing is further stabilized by C-H⋯Cl and C-H⋯O hydrogen bonds. The methanol solvent mol-ecule is disordered across a centre of inversion.