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Form-controlled synthesis of a polymorphic nonlinear optical crystal CsMgPO4ยท6H2O.
- Source :
- CrystEngComm; 10/21/2024, Vol. 26 Issue 39, p5561-5566, 6p
- Publication Year :
- 2024
-
Abstract
- A facile solution method for the form-controlled synthesis of CsMgPO<subscript>4</subscript>·6H<subscript>2</subscript>O is reported in this work and the key factor was determined to be the pH value of the solution used. A pure hexagonal phase (P6<subscript>3</subscript>mc) was obtained at a pH range of 6.9โ8.0, whereas a cubic phase (F4¯<subscript>3</subscript>m) was obtained at 9.5โ11.3. Compared with the cubic phase, the hexagonal phase of CsMgPO<subscript>4</subscript>·6H<subscript>2</subscript>O possessed a stronger second harmonic generation response of 0.82 pm V<superscript>โ1</superscript> due to the distortion of the PO<subscript>4</subscript> motif from a regular tetrahedron. The form-controlled synthesis mechanism was identified with the aid of infrared spectroscopy: the protonation process reduced the symmetry of the PO<subscript>4</subscript> motif when the solution pH decreased, resulting in the crystallization of the hexagonal phase of CsMgPO<subscript>4</subscript>·6H<subscript>2</subscript>O with the distorted PO<subscript>4</subscript> tetrahedron at a lower pH range. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14668033
- Volume :
- 26
- Issue :
- 39
- Database :
- Complementary Index
- Journal :
- CrystEngComm
- Publication Type :
- Academic Journal
- Accession number :
- 180138557
- Full Text :
- https://doi.org/10.1039/d4ce00594e