New antimony fluorooxoborates with strong birefringence and unprecedented structural characterisation

Chenhui Hu; Mengfan Wu; Jian Han; Zhihua Yang; Shujuan Han; Shilie Pan

doi:10.1039/d3cc05784d

New antimony fluorooxoborates with strong birefringence and unprecedented structural characterisation

Chem Commun (Camb). 2024 Feb 29;60(19):2653-2656. doi: 10.1039/d3cc05784d.

Authors

Chenhui Hu^{1

2}, Mengfan Wu^{1

2}, Jian Han^{1

2}, Zhihua Yang^{1

2}, Shujuan Han^{1

2}, Shilie Pan^{1

2}

Affiliations

¹ Research Center for Crystal Materials; CAS Key Laboratory of Functional Materials and Devices for Special Environments; Xinjiang Key Laboratory of Functional Crystal Materials; Xinjiang Technical Institute of Physics and Chemistry, CAS, 40-1 South Beijing Road, Urumqi 830011, China. hanjian@ms.xjb.ac.cn.
² Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.

PMID: 38348788
DOI: 10.1039/d3cc05784d

Abstract

Fluorooxoborates constitute a rich source of optical crystals due to their structural diversity and excellent performance. Antimony fluorooxoborates with stereochemically active lone pairs of electrons still have not been found, although the first antimony borate was discovered several years ago. In this study, we have achieved the successful synthesis of the first antimony(III) fluorooxoborate with an unprecedented [B₂O₄F]_∞ chain, namely SbB₂O₄F. Remarkably, SbB₂O₄F shows strong birefringence (0.171@1064 nm) and short UV cutoff edges (about 220 nm) according to calculations. The birefringence of SbB₂O₄F mainly originates from the highly distorted [SbO₄] groups.