[Sn<sub>3</sub>OF]PO<sub>4</sub><i>vs.</i> [Sn<sub>3</sub>F<sub>3</sub>]PO<sub>4</sub>: enhancing birefringence by breaking the <i>R</i>3 symmetry and realigning lone pairs
Yuhan Hu, Xi Xu, Ruixi Wang, Jingyun Han, Shunsong Zhang, Shu-Hui Zhan, Jingyu Guo, Li‐Ming Wu, Ling Chen
Abstract
The novel tin( ii ) phosphate compound [Sn 3 OF]PO 4 exhibits significantly greater birefringence compared with [Sn 3 F 3 ]PO 4 (Δ n obv. = 0.117 versus 0.027@546 nm), achieved by breaking the undesirable symmetry and reorienting stereochemically active lone pairs.
Topics & Concepts
BirefringenceLone pairTinCrystallographySymmetry breakingMaterials scienceStereochemistryChemistryPhysicsOpticsMoleculeOrganic chemistryMetallurgyQuantum mechanicsCrystal Structures and PropertiesInorganic Fluorides and Related CompoundsSolid-state spectroscopy and crystallography