Two Indium Iodate-Nitrates with Large Birefringence Induced by Hybrid Anionic Functional Groups and Their Favorable Arrangements

Yu Huang; Ting-Kun Jiang; Bing-Ping Yang; Chun-Li Hu; Zhi Fang; Jiang-Gao Mao

doi:10.1021/acs.inorgchem.2c00079

Two Indium Iodate-Nitrates with Large Birefringence Induced by Hybrid Anionic Functional Groups and Their Favorable Arrangements

Inorg Chem. 2022 Feb 28;61(8):3374-3378. doi: 10.1021/acs.inorgchem.2c00079. Epub 2022 Feb 14.

Authors

Yu Huang^{1

2}, Ting-Kun Jiang^{1

2}, Bing-Ping Yang^{2

3}, Chun-Li Hu², Zhi Fang², Jiang-Gao Mao^{2

3}

Affiliations

¹ College of Chemistry, Fuzhou University, Fuzhou 350108, P. R. China.
² State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China.
³ University of Chinese Academy of Sciences, Beijing 100049, P. R. China.

PMID: 35156368
DOI: 10.1021/acs.inorgchem.2c00079

Abstract

Two new indium iodate-nitrates, In(IO₃)₂(NO₃) (1) and [In(IO₃)(OH)(H₂O)](NO₃) (2), were rationally designed through the integration of hybrid anionic functional units. They exhibit large birefringences (1, 0.269; 2, 0.188, at 532 nm) and wide band gaps (1, 4.08 eV; 2, 4.39 eV), which is attributed to the synergistic effect of two types of birefringence-active units, namely, lone-pair IO₃ and π-conjugated NO₃ anionic groups. Through the substitution of OH and H₂O of 2 with IO₃, the hydrogen bonds of 2 are eliminated and the birefringence of 1 is greatly enhanced, highlighting the intriguing role of isovalent substitution in the discovery of fascinating optical materials.