BaSc2(HPO3)4(H2O)2: a new nonlinear optical phosphite exhibiting a 3D {[Sc2(HPO3)4]2−}∞ anionic framework and phase-matchable SHG effect

The first barium scandium phosphite, BaSc 2 (HPO 3 ) 4 (H 2 O) 2 , has been systematically studied. It exhibits a 3D [Sc 2 (HPO 3 ) 4 ] 2− anion framework with an SHG effect (0.94 × KDP) and phase-matching behaviour.