Issue 17, 2024

[Sn3OF]PO4vs. [Sn3F3]PO4: enhancing birefringence by breaking the R3 symmetry and realigning lone pairs

Abstract

Tin(II)-containing phosphates are promising candidates for designing and studying materials with enhanced birefringence. Herein, we present a novel compound [Sn3OF]PO4 that exhibits significant birefringence (Δnobv. = 0.117 at 546 nm), a five-fold improvement compared to that of the related compound [Sn3F3]PO4 discovered nearly 40 years ago. The remarkable enhancement in birefringence is primarily attributed to the anisotropic [SnO3F]5− structure building unit. By simple regulation of the F/O ratio, the undesirable R3 symmetry in [Sn3F3]PO4 is disrupted. This regulation also realigns the lone pairs, resulting in substantial optical anisotropy.

Graphical abstract: [Sn3OF]PO4vs. [Sn3F3]PO4: enhancing birefringence by breaking the R3 symmetry and realigning lone pairs

Supplementary files

Article information

Article type
Research Article
Submitted
14 máj 2024
Accepted
25 jún 2024
First published
09 júl 2024

Inorg. Chem. Front., 2024,11, 5648-5656

[Sn3OF]PO4vs. [Sn3F3]PO4: enhancing birefringence by breaking the R3 symmetry and realigning lone pairs

Y. Hu, X. Xu, R. Wang, J. Han, S. Zhang, S. Zhan, J. Guo, L. Wu and L. Chen, Inorg. Chem. Front., 2024, 11, 5648 DOI: 10.1039/D4QI01203H

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