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15. Optimization of Functional Building Blocks Generates a Substantial Improvement in Birefringence from Sn2OSO4to Sn3O2(OH)(HSO4)

Author

Chen, Yuqi, Luo, Han, Yin, Zeqiao, Dong, Xuehua, Gao, Daojiang, Zhou, Yuqiao, Huang, Ling, Cao, Liling, and Zou, Guohong

Abstract

In this work, two tin(II)-based sulfates, Sn2OSO4and Sn3O2(OH)(HSO4), were synthesized via the mild hydrothermal method. Both compounds employ the Sn2+cation with stereochemically active lone pair (SCALP) electrons and non-π-conjugated tetrahedral anionic groups SO4as the functional structural blocks. Interestingly, the experimental birefringence of Sn3O2(OH)(HSO4) is 0.169@546 nm, approximately 42 times larger than that of Sn2OSO4, which is 0.004@546 nm. Detailed structural analysis and theoretical calculations suggest that this significant birefringence difference arises from the optimization of functional building blocks in coordination environments and spatial arrangements. Furthermore, both compounds exhibit ultraviolet absorption edges at 308 and 307 nm, respectively. This indicates that Sn3O2(OH)(HSO4) has the potential to be a candidate for an ultraviolet (UV) birefringent crystal. This study offers inspiration for further exploration of tin(II)-based compounds with excellent comprehensive properties.

Published
2024
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16. Sb2O2SeO3and Sb2O(SeO3)2: Two-Layered Antimony(III) Selenites with Enhanced Birefringence

Author

Luo, Han, Zhang, Yu, Wang, Tingyu, Huang, Ling, Cao, Liling, Dong, Xuehua, and Zou, Guohong

Abstract

Two antimony selenites, Sb2O2SeO3and Sb2O(SeO3)2, were synthesized by simultaneously incorporating stereochemically active lone pair electrons containing SeO32–and Sb3+. These compounds are structured with [SbOx] polyhedra and [SeO3] units within a two-dimensional framework. Both of them exhibit cutoffs at 300 and 330 nm within the ultraviolet (UV) range and demonstrate significant birefringence, with indices of 0.069 and 0.126 at 546 nm, respectively. These properties highlight their potential as UV birefringent materials. Structural analyses and theoretical calculations reveal that their exceptional birefringence results from the synergistic interactions between SeO32–anions and Sb3+cations.

Published
2024
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21. Homochiral Hybrid Organic–Inorganic Cadmium Chlorides Directed by Enantiopure Amino Acids

Author

Juan Cheng, Yuandan Deng, Xuehua Dong, Jing Li, Ling Huang, Hongmei Zeng, Guohong Zou, and Zhien Lin

Subjects
Inorganic Chemistry, Cadmium Chloride, Chlorides, Amines, Amino Acids, Physical and Theoretical Chemistry, Cadmium
Abstract

Homochiral cadmium chlorides were prepared under mild conditions using enantiopure amino acids as structure-directing agents. They feature a lacunary hexagonal CdCl

Published
2022
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34. SbHPO

Author

Ying, Long, Xuehua, Dong, Ling, Huang, Hongmei, Zeng, Zhien, Lin, and Guohong, Zou

Abstract

A novel antimony(III)-based phosphite, SbHPO

Published
2022

35. One-Step Solvothermal Synthesis of Raspberry-like NiCo-MOF for High-Performance Flexible Supercapacitors for a Wide Operation Temperature Range

Author

Wenjing Zhang, Zohreh Shahnavaz, Xuehua Yan, Xinpeng Huang, Sutang Wu, Hao Chen, Jianmei Pan, Tie Li, and Jiapeng Wang

Subjects
Inorganic Chemistry, Physical and Theoretical Chemistry
Abstract

As a novel electrode material for energy storage, metal-organic frameworks (MOFs) emerge with plenty of merits and certain drawbacks in the field of supercapacitors. Nevertheless, most MOFs synthesized for the moment are faced with dimension/distribution issues and dissatisfactory electrical conductivity. Hence, in this paper, NiCo-MOF was successfully fabricated by applying a one-step solvothermal method, from which NiCo-MOF-3 presents an optimal electrochemical performance compared to other NiCo-MOFs and Ni/Co-MOF. Owing to its unique three-dimensional spherical raspberry structure, NiCo-MOF-3 demonstrates an available internal resistance and electron transfer resistance to ameliorate electrical energy storage, exhibiting an excellent mass specific capacitance of 639.8 F/g at 1 A/g. Then, a flexible quasi-solid-state asymmetric supercapacitor was assembled with NiCo-MOF-3 as the positive electrode. The introduction of K

Published
2022

36. A2Hgx(SeO3)y(A = K, Rb, Cs): Three Alkali Metal Mercury Selenites Featuring Unique 1D [HgOm(SeO3)n]∞Chains

Author

Ren, Jinxuan, Cui, Hui, Cheng, Linhong, Zhou, Yuqiao, Dong, Xuehua, Gao, Daojiang, Huang, Ling, Cao, Liling, and Ye, Ning

Abstract

Herein, three alkali metal mercury selenites, K2Hg2(SeO3)3, Rb2Hg2(SeO3)3, and Cs2Hg3(SeO3)4, were successfully obtained by a hydrothermal method. The three compounds featured same one-dimensional (1D) [HgOm(SeO3)n]∞chain structure that consisting of distorted Hg–O polyhedra and SeO3triangular pyramids with stereochemically active lone pair (SCALP) electrons. Interestingly, the rich coordination environment of Hg atoms and the size difference of alkali metal cations lead to diverse arrangement of SeO3groups, which makes them exhibit different birefringence. The band gaps of the three compounds indicate that they are potential ultraviolet (UV) optical materials. Detailed theoretical calculations demonstrate that the combined effects of SeO3triangular pyramids and Hg–O polyhedra are responsible for the optical characteristics of the reported compounds.

Published
2023
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39. Synthesis of

Author

Tian, Tian, Chunping, Feng, Yaorong, Wang, Xuehua, Zhu, Dan, Yuan, and Yingming, Yao

Subjects
Dioxanes, Lactones, Polymers, Spectroscopy, Fourier Transform Infrared, Phenylenediamines, Lanthanoid Series Elements, Polymerization
Abstract

A series of lanthanide alkoxo complexes supported by ONNO salalen ligands were synthesized and characterized. A one-pot reaction of LH

Published
2022

45. CsHgNO3Cl2: A New Nitrate UV Birefringent Material Exhibiting an Optimized Layered Structure

Author

Ying Long, Ling Huang, Hongmei Zeng, Xuehua Dong, Zhien Lin, and Guohong Zou

Subjects
Birefringence, Optical anisotropy, 010405 organic chemistry, business.industry, Chemistry, 010402 general chemistry, Nonlinear optical crystal, 01 natural sciences, 0104 chemical sciences, Layered structure, Ion, Inorganic Chemistry, chemistry.chemical_compound, Planar, Nitrate, Optoelectronics, Physical and Theoretical Chemistry, business
Abstract

Developing effective strategies to design novel, excellent birefringent materials has become an emerging challenge. Herein, we report a new UV nitrate birefringent material, CsHgNO3Cl2, which is an analogue of the known UV carbonate nonlinear optical crystal KCaCO3F. In CsHgNO3Cl2, a perfect layered structure was produced owing to the alliance of a planar π-conjugated anion NO3- and highly electropolarized Hg2+ cation. The optimized layered structure that is beneficial in enlarging the optical anisotropy induced a large birefringence (Δn = 0.145@546 nm) for CsHgNO3Cl2, even superior to that of the well-known commercial birefringent material α-BBO in the UV region. The strategy that the optimization of planar functional group arrangement is able to boost birefringence is expected to guide the development of high-performance birefringent materials in the future, especially in the field of UV.

Published
2020
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46. A6Sb4F12(SO4)3 (A = Rb, Cs): Two Novel Antimony Fluoride Sulfates with Unique Crown-like Clusters

Author

Xuehua Dong, Xin Wang, Xiaoyu Zhao, Hongmei Zeng, Ling Huang, Guohong Zou, Zhien Lin, and Ying Long

Subjects
010405 organic chemistry, chemistry.chemical_element, Halide, 010402 general chemistry, 01 natural sciences, Hydrothermal circulation, 0104 chemical sciences, Inorganic Chemistry, chemistry.chemical_compound, Crystallography, chemistry, Antimony, Group (periodic table), Physical and Theoretical Chemistry, Sulfate, Lone pair, Fluoride, Stoichiometry
Abstract

Two new antimony fluoride sulfates named A6Sb4F12(SO4)3 (A = Rb, Cs) with unique crown-like clusters have been successfully synthesized by introducing Sb3+ with a stereochemically active lone pair in the sulfate system through a facile hydrothermal method. The structure regulation induced by the cation sizes results in the symmetry difference in these two title compounds, i.e., Rb6Sb4F12(SO4)3 crystallizing in the polar noncentrosymmetric (NCS) space group of P3 and Cs6Sb4F12(SO4)3 in the centrosymmetric (CS) space group of P1. Detailed characterizations, including XRD, thermal behaviors, optical properties, and the theoretical calculations, for these two compounds have been performed. The discovery of the unique crown-like clusters observed in A6Sb4F12(SO4)3 (A = Rb, Cs) enriches the diversity of structures for antimony sulfates systems. Simultaneously, a summary and comparison for all reported antimony halide sulfates has been made to illustrate the synergistic effect of the stoichiometric ratio and cation sizes on the macroscopic centricity and the framework structure, which will guide the systematical discovery of antimony(III)-based functional materials in future.

Published
2020
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