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REI 5 O 14 (RE=Y and Gd): Promising SHG Materials Featuring the Semicircle-Shaped I 5 O 14 3- Polyiodate Anion.
- Source :
-
Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2019 Aug 19; Vol. 58 (34), pp. 11666-11669. Date of Electronic Publication: 2019 Jul 12. - Publication Year :
- 2019
-
Abstract
- The first examples of rare-earth polyiodates, namely, REI <subscript>5</subscript> O <subscript>14</subscript> (RE=Y and Gd), have been prepared by hydrothermal reactions of RE <subscript>2</subscript> O <subscript>3</subscript> and H <subscript>5</subscript> IO <subscript>6</subscript> in H <subscript>3</subscript> PO <subscript>4</subscript> (≥85 wt % in H <subscript>2</subscript> O), with extremely high yields (>95 %). They crystalize in the polar space group Cm and feature a brand-new semicircle-shaped [I <subscript>5</subscript> O <subscript>14</subscript> ] <superscript>3-</superscript> pentameric polyiodate anion composed of two IO <subscript>3</subscript> and three IO <subscript>4</subscript> polyhedra. Remarkably, both compounds exhibit very large second-harmonic generation (SHG) signals (14× and 15×KH <subscript>2</subscript> PO <subscript>4</subscript> (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.<br /> (© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)
Details
- Language :
- English
- ISSN :
- 1521-3773
- Volume :
- 58
- Issue :
- 34
- Database :
- MEDLINE
- Journal :
- Angewandte Chemie (International ed. in English)
- Publication Type :
- Academic Journal
- Accession number :
- 31209974
- Full Text :
- https://doi.org/10.1002/anie.201904383