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- Title
REI<sub>5</sub>O<sub>14</sub> (RE=Y and Gd): Promising SHG Materials Featuring the Semicircle‐Shaped I<sub>5</sub>O<sub>14</sub><sup>3−</sup> Polyiodate Anion.
- Authors
Chen, Jin; Hu, Chun‐Li; Mao, Fei‐Fei; Yang, Bing‐Ping; Zhang, Xiao‐Han; Mao, Jiang‐Gao
- Abstract
The first examples of rare‐earth polyiodates, namely, REI5O14 (RE=Y and Gd), have been prepared by hydrothermal reactions of RE2O3 and H5IO6 in H3PO4 (≥85 wt % in H2O), with extremely high yields (>95 %). They crystalize in the polar space group Cm and feature a brand‐new semicircle‐shaped [I5O14]3− pentameric polyiodate anion composed of two IO3 and three IO4 polyhedra. Remarkably, both compounds exhibit very large second‐harmonic generation (SHG) signals (14× and 15×KH2PO4 (KDP) upon 1064 nm laser radiation for Y and Gd compounds, respectively). Our work shows that the hydrothermal reaction in a phosphoric acid medium facilitates the formation of rare‐earth polyiodates.
- Subjects
GADOLINIUM; ANIONS; PHOSPHORIC acid
- Publication
Angewandte Chemie, 2019, Vol 131, Issue 34, p11792
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201904383