Synthesis of Mixed Anion Rare Earth Sulfate Fluorides LnSO4F·H2O (Ln = Nd, Tb, Dy, and Ho) and LnSO4F (Ln = Tb, Dy, and Ho)

IF 3.2 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Crystal Growth & Design Pub Date : 2025-03-27 DOI:10.1021/acs.cgd.5c0007610.1021/acs.cgd.5c00076

Lakshani W. Masachchi, Gregory Morrison and Hans-Conrad zur Loye*,

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Abstract

Single crystals of the mixed anion rare earth sulfate fluorides LnSO₄F·H₂O (Ln = Nd, Tb, Dy, and Ho), monoclinic space group P2₁/n, were prepared via an HF-free mild hydrothermal synthesis. Furthermore, the LnSO₄F (Ln = Tb, Dy, and Ho) phases, orthorhombic space group Pnma, were obtained via the thermal decomposition of LnSO₄F·H₂O (Ln = Tb, Dy, and Ho). While the LnSO₄F·H₂O (Ln = Nd, Tb, Dy, and Ho) phases are isostructural, two different structures are observed for the LnSO₄F (Ln = Tb, Dy, and Ho) series, one for Tb and one for Dy and Ho, differing in the rare earth coordination environments. Green photoluminescence is observed for Tb(SO₄)F·H₂O and Tb(SO₄)F. Magnetic measurements indicate the absence of magnetic order down to 2 K in the Ln(SO₄)F·H₂O and Ln(SO₄)F phases.

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混合阴离子稀土硫酸盐氟化物LnSO4F·H2O （Ln = Nd, Tb, Dy, Ho）和LnSO4F （Ln = Tb, Dy, Ho）的合成

通过无氢氟酸温和水热合成法制备了单斜空间群 P21/n 的混合阴离子稀土硫酸盐氟化物 LnSO4F-H2O （Ln = Nd、Tb、Dy 和 Ho）单晶。此外，通过热分解 LnSO4F-H2O（Ln = Tb、Dy 和 Ho）得到了正交空间群 Pnma 的 LnSO4F（Ln = Tb、Dy 和 Ho）相。虽然 LnSO4F-H2O（Ln = Nd、Tb、Dy 和 Ho）相是等结构的，但在 LnSO4F（Ln = Tb、Dy 和 Ho）系列中观察到两种不同的结构，一种是 Tb 结构，另一种是 Dy 和 Ho 结构，它们在稀土配位环境上有所不同。在 Tb(SO4)F-H2O 和 Tb(SO4)F 中观察到了绿色光致发光。磁性测量结果表明，在低至 2 K 的 Ln(SO4)F-H2O 和 Ln(SO4)F 相中不存在磁序。

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来源期刊

Crystal Growth & Design 化学-材料科学：综合

CiteScore

6.30

自引率

10.50%

发文量

650

审稿时长

1.9 months

期刊介绍： The aim of Crystal Growth & Design is to stimulate crossfertilization of knowledge among scientists and engineers working in the fields of crystal growth, crystal engineering, and the industrial application of crystalline materials. Crystal Growth & Design publishes theoretical and experimental studies of the physical, chemical, and biological phenomena and processes related to the design, growth, and application of crystalline materials. Synergistic approaches originating from different disciplines and technologies and integrating the fields of crystal growth, crystal engineering, intermolecular interactions, and industrial application are encouraged.