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In the title di-thio-glycoluril derivative, C 19 H 20 N 4 O 3 S 2 , there is a difference in the torsion angles between the thio-imidazole moiety and the meth-oxy-phenyl groups on either side of the mol-ecule [C-N-C ar -C ar = 116.9 (2) and -86.1 (3)°, respectively]. The N-C-N bond angle on one side of the di-thio-glycoluril moiety is slightly smaller compared to that on the opposite side, [110.9 (2)° cf . 112.0 (2)°], probably as a result of the steric effect of the methyl group. In the crystal, N-H⋯S hydrogen bonds link adjacent mol-ecules to form chains propagating along the c- axis direction. The chains are linked by C-H⋯S hydrogen bonds, forming layers parallel to the bc plane. The layers are then linked by C-H⋯π inter-actions, leading to the formation of a three-dimensional supra-molecular network. Hirshfeld surface analysis and two-dimensional fingerprint plots were used to investigate the mol-ecular inter-actions in the crystal.

acta crystallographica. section e, crystallographic communications

Crystal structure and Hirshfeld surface analysis of a new dithioglycoluril: 1,4-bis(4-methoxyphenyl)-3a-methyltetrahydroimidazo[4,5-d]imidazole-2,5(1H,3H)-dithione