4,6-Dimethyl­pyrimidin-2-amine

The asymmetric unit of the title compound, C₆H₉N₃, contains three crystallographically independent mol­ecules of similar geometry. All of the mol­ecules are almost planar, with r.m.s. deviations of 0.003, 0.016 and 0.005 Å. In the crystal, the mol­ecules are linked by N—H...N hydrogen bonds into zigzag ribbons parallel to the c axis, generating rings of R₂²(8) graph-set motif.

[μ-N¹,N²-Bis(pyridin-2-yl)hydrazine-1,2-dicarbothio­amidato]bis­[chlorido­copper(II)]

The binuclear title compound, [Cu₂(C₁₂H₁₀N₆S₂)Cl₂], possesses twofold rotational symmetry. The Cu^II atom occupies a four-coordinate pseudo-tetra­hedral environment bound to one S atom, one imine N atom and one pyridine N atom from the N¹,N²-bis­(pyridin-2-yl)hydrazine-1,2-dicarbo­thio­amidate ligand, and one Cl⁻ anion. The metal atoms are connected via the bis-tridentate ligand into a binuclear structure. The mol­ecule is bow-shaped with the pyridine rings inclined to one another by 51.56 (14)°. In the crystal, N—H...Cl hydrogen bonds lead to the formation of ribbons propagating along [001]. These ribbons are connected via C—H...Cl, C—H...S and π–π inter­actions [centroid–centroid distance = 3.6146 (19) Å], leading to the formation of a three-dimensional structure.