Voronoi–Dirichlet tesselation as a tool for investigation of polymorphism in molecular crystals with C_wH_xN_yO_z composition and photochromic properties

A relationship between photochromism and non-bonded interactions was investigated with the Voronoi–Dirichlet approach. Crystal structures of five sets of conformational polymorphs with the C_wH_xN_yO_z composition have been taken into account. It was demonstrated that each polymorph is characterized by a unique set of inter- and intramolecular contacts.