An Exceptional Peroxide Birefringent Material Resulting from d-π Interactions

被引：78

作者：

Liu, Shuai ^{[1
]}

Liu, Xiaomeng ^{[2
,3
]}

Zhao, Sangen ^{[1
]}

Liu, Youchao ^{[1
]}

Li, Lina ^{[1
]}

Ding, Qingran ^{[1
,3
]}

Li, Yanqiang ^{[1
]}

Lin, Zheshuai ^{[2
,3
]}

Luo, Junhua ^{[1
]}

Hong, Maochun ^{[1
]}

机构：

[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350000, Peoples R China

[2] Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2020年 / 59卷 / 24期

基金：

中国国家自然科学基金;

关键词：

birefringence; birefringent materials; peroxides; structure-property relationships; rubidium; COEFFICIENTS;

D O I：

10.1002/anie.202002828

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Birefringent materials, which can modulate the polarization of light, are almost exclusively limited to oxides. Peroxides have long been overlooked as birefringent materials, because they are usually not stable in air. Now, the first peroxide birefringent material Rb2VO(O-2)(2)F is reported, the single crystals of which keep transparency after being exposed in the air for two weeks. Interestingly, Rb2VO(O-2)(2)F does not feature an optimal anisotropic structure, but its birefringence (Delta n=0.189 at 546 nm) exceeds those of the majority of oxides. According to the first-principles calculations, this exceptional birefringence should be attributed to the strong electronic interactions between localized pi orbital of O(2)(2-)anions and V(5+)3d orbitals, which may be also favorable to the stability in the air for Rb2VO(O-2)(2)F. These findings distinguish peroxides as a brand-new class of birefringent materials that may possess birefringence superior to the traditional oxides.

引用

页码：9414 / 9417

页数：4

共 28 条

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