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[ o ‐C 5 H 4 NHOH] 2 [I 7 O 18 (OH)]⋅3 H 2 O: An Organic–Inorganic Hybrid SHG Material Featuring an [I 7 O 18 (OH)] ∞ 2 - Branched Polyiodate Chain
Author(s) -
Chen QianQian,
Hu ChunLi,
Chen Jin,
Li YiLin,
Li BingXuan,
Mao JiangGao
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202106335
Subject(s) - iodate , chemistry , space group , amine gas treating , second harmonic generation , crystallography , analytical chemistry (journal) , laser , x ray crystallography , inorganic chemistry , diffraction , optics , iodide , organic chemistry , physics
An organic–inorganic hybrid polyiodate, namely, [ o ‐C 5 H 4 NHOH] 2 [I 7 O 18 (OH)]⋅3 H 2 O ( I ), featuring a novel branched polyiodate chain has been obtained by evaporation method. [ o ‐C 5 H 4 NHOH] 2 [I 7 O 18 (OH)]⋅3 H 2 O ( I ) crystalizes in the polar space group Ia and features an [I 7 O 18 (OH)]∞ 2 -branched polyiodate chain in which [I 3 O 9 ] 3− trimers are grafted on the same side of the one‐dimensional (1D) chain based on [I 4 O 11 (OH)] 3− tetramers. The asymmetric organic amine groups are beneficial to the polymerization of iodate groups and inducing the formation of the non‐centrosymmetric (NCS) structure. Compound I exhibits a rather large Second‐Harmonic‐ Generation (SHG) signal of 8.5×KH 2 PO 4 (KDP) upon 1064 nm laser radiation, a moderate band gap of 3.90 eV and a high laser‐induced‐damage‐threshold (LIDT) of 182.34 MW cm −2 , hence it is a promising new SHG material. The relationship between the structures of the organic amine groups and the overall structures has been also analyzed.