RESEARCH ARTICLE Open Access m y

properties. One of the important classes of N-containing heterocycles is the 3,5,6-trisubstituted-1,2,4-triazines. Some of them can be active as blood platelet aggrega-tion inhibitors and others exhibit antiviral inhibitory activity (against influenza viruses for example), signifi-cant activity towards leukaemia and ovarian cancer, and anti-HIV activity [1-4]. Therefore, the design of structure of 5-Methoxy-5,6-diphenyl-4,5-dihydro-2H-1,2,4-triazine-3-thione (Figure 1). In addition to structural, solvatochromic properties of the mentioned molecule are discussed. Results and discussion The crystal structure 5-Methoxy-5,6-diphenyl-4,5-dihydro-2H-1,2,4-triazine-3-thione was solved by direct methodsNumerous compounds containing the 1,2,4-triazineBackground: For the development of properties in molecular crystals, such as electrical conductivities, magnetic properties, or non-linear optical properties, not only the electronic properties of molecules themselves matter, but also the molecular arrangements in the crystals are very important. Therefore, the design of the crystal structures and the control of molecular arrangements have attracted much attention in recent years. Among various ligands, triazine moieties have been especially interesting because of their biological, pharmacological and medicinal properties. Results: Crystal structure of 5-Methoxy-5,6-diphenyl-4,5-dihydro-2H-1,2,4-triazine-3-thione is Monoclinic, which consists o