Structure and optical property evolution in PbM(PO₄)X (M = Zn, Sn; X = halogen): SHG effect and birefringence

Abstract

Four new phosphates, namely, PbZn(PO4)F (1), PbSn(PO4)Cl (2), PbSn(PO4)Br (3) and PbSn(PO4)I (4), were achieved by hydrothermal and solid-state methods successfully. PbZn(PO4)F (1) was crystallized in a polar space group...

Deep Eutectic Solvents Synthesis of A2Sb(C2O4)Cl3 (A = NH4, K, Rb) with Superior Optical Performance

“…Recently, Sb 3+ /Sn 2+ -polyhedron with stereochemically active lone pair (SCALP) electrons have shown great potential in the construction of excellent nonlinear and birefringent crystals. [21][22][23][24] For example, CsS-bF 2 SO 4 [25] and K 2 Sb(P 2 O 7 )F [26] exhibit large SHG response of 3.0 and 4.0 × KDP, and Sn 2 PO 4 I shows the birefringence as large as 0.664 at 546 nm. [27] Hence, it is urgent to solve the problem encountered in crystal growth of Sb 3+ -containing compounds.…”

Four New Sb‐based Orthophosphates: Cation Regulation to Investigate Diversified Structural Architecture

“…Based on the current study of Sb‐based phosphates, we found that most of the P atom are tetra‐coordinated, such as [PO 4 ], [HPO 3 ], [PO 2 F 2 ] [41–43] . Among them, only K 2 Sb(P 2 O 7 )F, Sb 0.5 Fe 0.5 (P 2 O 7 ), Sb 0.5 In 0.5 (P 2 O 7 ), ( α, β )‐Sb 2 (P 2 O 7 ) 2 contain [P 2 O 7 ] groups.…”

Recent Development of SnII, SbIII‐based Birefringent Material: Crystal Chemistry and Investigation of Birefringence

“…Twenty‐three crystals are present in this system, [13, 80–109] as far as we know. Among them, ten crystals exhibit large optical anisotropy with birefringence greater than 0.10@1064 nm, especially Sn 2 PO 4 X (X=F, Cl, Br, I), whose optical anisotropy was studied in detail by Pan and Zou, et al.…”

“…Mao, et al. synthesized Ba 3 Sb 2 (PO 4 ) 4 through mild hydrothermal reactions, [101] and it crystallized in the centrosymmetric space group C 2/ c . The 1D chains composed of isolated SbO 4 and PO 4 can be seen in Ba 3 Sb 2 (PO 4 ) 4 (Figure 15a).…”

“…Owing to the undesirable arrangements of Sn, Sbcentered polyhedra, and PO 4 groups, five crystals possess a birefringence less than 0.05@1064 nm, including XSn 4 (PO 4 ) 3 (X = K, Na), [13,[102][103][104] K 2 SnP 2 O 7 , [13,105] Cd 3 Sb 2 (PO 4 ) 4 (H 2 O) 2 [101] and Sn 3 PO 4 F 3 . [13,[106][107][108][109]…”