Crystal structure and Hirshfeld surface analysis of 4-oxo-3-phenyl-2-sulfanyl-idene-5-(thio-phen-2-yl)-3,4,7,8,9,10-hexa-hydro-2-pyrido[1,6-:2,3-']di-pyrimidine-6-carbo-nitrile.

In the title compound, CHNOS, mol-ecular pairs are linked by N-H⋯N hydrogen bonds along the axis direction and C-H⋯S and C-H⋯O hydrogen bonds along the axis direction, with (12) and (16) motifs, respectively, thus forming layers parallel to the (10) plane. In addition, C=S⋯π and C≡N⋯π inter-actions between the layers ensure crystal cohesion. The Hirshfeld surface analysis indicates that the major contributions to the crystal packing are H⋯H (43.

Crystal structure and Hirshfeld surface analysis of 5-oxo-7-phenyl-2-(phenyl-amino)-1-[1,2,4]triazolo[1,5-]pyridine-6,8-dicarbo-nitrile dimethyl sulfoxide monosolvate.

In the title compound, CHNO·CHOS, the [1,2,4]triazolo[1,5-]pyridine ring system is almost planar and makes dihedral angles of 16.33 (7) and 46.80 (7)°, respectively, with the phenyl-amino and phenyl rings.