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Hu M, Wang J, Tuerhong N, Zhang Z, Jing Q, Chen Z, Yang Y, Lee MH. Novel antimony phosphates with enlarged birefringence induced by lone pair cations. Dalton Trans 2024. [PMID: 38264854 DOI: 10.1039/d3dt03833e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
Phosphates, whose obvious disadvantage is the relatively small birefringence, can be overcome by the introduction of post-transition metal cations containing stereochemically active lone-pair electrons. In this paper, two new compounds were successfully explored in the A-Sb-P-O system, i.e. Cs2Sb3O(PO4)3 (CsSbPO) and (NH4)2Sb4O2(H2O)(PO4)2[PO3(OH)]2 (NH4SbPOH). Transmission spectra show that CsSbPO has a surprising transmission range with a UV cutoff edge of 213 nm. First-principles calculations show that both compounds have a wide band gap (5.02 eV for CsSbPO and 5.30 eV for NH4SbPOH) and enlarged birefringence (Δn = 0.034@1064 nm for CsSbPO and Δn = 0.045@1064 nm for NH4SbPOH). The results of real-space atom-cutting investigations show that the distorted [SbOx] polyhedra originating from the asymmetric lone pair electrons give the main contribution to the total birefringence and overcome the disadvantage of small birefringence of phosphates but maintain wide transition windows.
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Affiliation(s)
- Mei Hu
- Xinjiang Key Laboratory of Solid State Physics and Devices, School of Physical Science and Technology & Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uyghur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830017, China.
| | - Jialong Wang
- Xinjiang Key Laboratory of Solid State Physics and Devices, School of Physical Science and Technology & Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uyghur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830017, China.
| | - Nuerbiye Tuerhong
- Xinjiang Key Laboratory of Solid State Physics and Devices, School of Physical Science and Technology & Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uyghur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830017, China.
| | - Zhiyuan Zhang
- Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matter Physics, College of Physical Science and Technology, Yili Normal University, Yining 835000, China
| | - Qun Jing
- Xinjiang Key Laboratory of Solid State Physics and Devices, School of Physical Science and Technology & Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uyghur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830017, China.
| | - Zhaohui Chen
- Xinjiang Key Laboratory of Solid State Physics and Devices, School of Physical Science and Technology & Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uyghur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830017, China.
| | - Yonglei Yang
- Urumqi No. 1 Senior High School, North Second Lane, Kanas Lake Road, Urumqi 830023, China
| | - Ming-Hsien Lee
- Department of Physics, Tamkang University, New Taipei City 25137, China
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