Abstract
The deep eutectic solvents was first employed to solve the hydrolysis of Sb~(3+) cations in Sb(III)-oxyacid system to explore new nonlinear optical materials, producing a novel antimony(III) fluoride oxalate named NH_4Sb_2(C_2O_4)F_5. The title compound featured a 3D noncentrosymmetric structure composed of [Sb_2(C_2O_4) F_5]~- anionic clusters and NH~4~+ cations. The cooperative effect of the planar n-conjugated [C_2O_4]~(2-) anionic groups and the Sb~(3+) cations with stereochemicaly active lone pairs induce a relatively strong SHG response (l.l×KH_2PO_4) and a large birefringence (0.111@546nm), which was confirmed by detailed theoretical calculations. The overall performances indicate that NH_4Sb_2(C_2O_4)F_5 is a potential ultraviolet nonlinear optical material. The successful application of deep eutectic solvents in the synthesis for easy hydrolytic materials system opens the door to exploring new inorganic solid functional materials.
NSTL
Elsevier