The compound of selenium containing heterocycles namely (I) 4,6-dimethyl-3-cyanopyridine-(2H)-
selenone (C8H8N2Se) was used as model to investigate the structural and micro-structural features
of some selected selenones. Visualization of molecular structure of selenium containing moiety was
accurately investigated to clarify role of selenium ion in nucleation process of forming 3D-framenet
of H-bonded of substituted selenones. Bond distances, torsions on angles of investigated compound
were compared with others crystal data to confirm crystal structures of substituted selenones which
is monoclinic crystal form with P21/n space group.