In the title compound, C(13)H(15)ClN(2)S, the dihydro-pyrimidine ring is essentially planar, with a maximum deviation from the least-squares plane of 0.122 (3) Å for the unsubstitued olefinic C atom. The dihedral angle between the dihydro-pyrimidine and benzene rings is 86.62 (13)°. The crystal structure is stabilized by inter-molecular N-H⋯S hydrogen bonds, which form centrosymmetric dimers arranged along the c axis.
The title compound, C(6)H(15)N(2) (+)·NCS(-), was obtained unexpectedly from the reaction mixture of benzoyl chloride, ammonium thio-cyanate and cyclo-hexane-1,2-diamine. The cyclo-hexane ring adopts a chair conformation. In the crystal, N-H⋯S and N-H⋯N inter-actions involving the thio-cyanate anion and both the amine and the aminium N atoms link the mol-ecules, forming two-dimensional networks parallel to (001).
In the title compound, C(13)H(15)FN(2)S, the dihydro-pyrimidine ring is essentially planar, with a maximum deviation of 0.086 (3) Å from the mean plane of the rest of the ring for the dimethyl-ated C atom. The benzene ring is almost perpendicular to the dihydro-pyrimidine ring, with a dihedral angle of 83.97 (14)°. The crystal packing is characterized by centrosymmetric dimers resulting from pairs of inter-molecular N-H⋯S hydrogen bonds. There are also C-H⋯π inter-actions.
Refluxing a mixture of 1,10-phenanthroline, (4-fluoro-phen-yl)thio-urea and cadmium(II) chloride did not produce the expected mixed-ligand complex but formed a co-crystal of the two ligands, C12H8N2·C7H7FN2S. The asymmetric unit consists of two pairs of the co-crystal mol-ecules. In each (4-fluoro-phen-yl)thio-urea mol-ecule, the planes of the N2CS thio-urea units are almost perpendicular to the corresponding fluoro-benzene rings, subtending angles of 76.53 (7) and 85.25 (7)°. In the crystal, N-H⋯N and N-H⋯S hydrogen bonds form inversion dimers from the co-crystal pairs. A weak π-π inter-action between the phenanthroline rings [centroid-centroid distance = 3.7430 (15)Å] is also observed.