Four noncentrosymmetric molybdophosphates discovered by a chemical substitution strategy

Abstract

Herein, four molybdophosphates, A_xB_4−xMo₅P₂O₂₂ (A = Na, K and B = Rb, Cs), were synthesized by cation substitution. Compared with the parent compound A₄Mo₅P₂O₂₂ (A = Rb, Cs), the different cations result in different polarities of the structural-functional unit, ultimately influencing the nonlinear optical properties of A_xB_4−xMo₅P₂O₂₂ (x = 1–4).