Effect of hydrogen bonds on physical properties of ammonium dihydrogenphosphate crystals

Effects of hydrogen bonds in an ammonium dihydrogenphosphate (ADP) crystallographic frame on its optical properties such as static polarizabilities and first hyperpolarizabilities, are quantitatively studied by quantum chemical calculations. Chemical bonding characteristics of the ADP crystal are analyzed by the bond valence model. The present results show that hydrogen bonds play an important role in crystal optical properties.