AMMONIA DENSITY AT THE TEMPERATURE OF PHASE TRANSITION FROM SOLID TO LIQUID STATE AS A FUNCTION OF COMPOSITION AND STRUCTURE IN MODELS OF PARTICLES WITH SPHERICAL IMAGES OF HYDROGEN AND NITROGEN ATOMS

The results of numerical experiments on the calculation of ammonia density at the phase transition temperature are presented. Models of monomer and associates of liquid ammonia, representative cells of ammonia crystals were developed using spherical images of H and N atoms. The volumes and densities of the unit cell of ammonia crystals of cubic syngony, as well as the cyclic tetramer of ammonia, its symmetrically branched pentamer and monomer, as the main probable structures of liquid ammonia at the phase transition temperature, were calculated from objectively identified components of identifiers