Computational study on the kinetics of the reaction between Ca2+ and urea

Statistical kinetic theory calculations on the reaction of Ca2+ with urea permit to discriminate between processes in which a neutral is lost from Coulomb explosions. The kinetically preferred products are NH3 + [CaOCNH]2+, which are the fifth products in order of stability, whereas the most stable ones, NH4++[CaOCN]+ and NH4++[CaNCO]+, appear only in residual quantities.