Synthesis of Dysprosium Oxychloride (DyOCl),Journal of Chemical Crystallography

当前位置： X-MOL 学术 › J. Chem. Crystallogr. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Synthesis of Dysprosium Oxychloride (DyOCl)
Journal of Chemical Crystallography ( IF 0.4 ) Pub Date : 2021-09-24 , DOI: 10.1007/s10870-021-00904-2
Saehwa Chong ₁ , Brian J. Riley ₁ , José Marcial ₁ , Charmayne E. Lonergan ₁ , Derek A. Cutforth ₁

Affiliation

Dysprosium oxychloride, DyOCl, was synthesized using a simple hydrolysis method with DyCl₃·6H₂O. X-ray powder diffraction (XRD) data was used to determine the crystal structure. The DyOCl compound is isostructural to the matlockite (PbFCl) crystal structure and crystallizes in the tetragonal P4/nmm (#129) space group. The crystal structure contains the alternating cationic layers of (DyO)_n and anionic layers of nCl⁻ along the c-axis. The structural data including unit cell, volume, and density of DyOCl were compared to other rare-earth oxychloride data from the Inorganic Crystal Structure Database (ICSD) and our previous study on TbOCl. Fourier-transform infrared spectroscopy was performed on DyOCl and peaks observed at 543 and 744 cm⁻¹ were attributed to Dy–O and Dy–Cl. Scanning electron microscopy analysis showed irregularly shaped crystals. Hot-stage XRD, thermogravimetry, as well as differential scanning calorimetry coupled to a gas chromatograph and a mass spectrometer (evolved gas analysis) were performed on DyCl₃·6H₂O to understand the phase transformation to DyOCl (and Dy₂O₃) as a function of temperature and time at temperature.

Graphic Abstract

DyOCl compound with the tetragonal P4/nmm space group is composed of the alternating layers of (DyO)_n and nCl⁻ along the c-axis.

中文翻译：

氧氯化镝 (DyOCl) 的合成

使用简单的水解方法与 DyCl ₃ ·6H ₂ O合成了氧氯化镝 DyOCl。X射线粉末衍射 (XRD) 数据用于确定晶体结构。DyOCl 化合物与 matlockite (PbFCl) 晶体结构同构，并在四方P 4/ nmm (#129) 空间群中结晶。晶体结构包含交替的 (DyO) _n阳离子层和n Cl ^-阴离子层沿c-轴。将 DyOCl 的晶胞、体积和密度等结构数据与无机晶体结构数据库 (ICSD) 中的其他稀土氯氧化物数据和我们之前对 TbOCl 的研究进行了比较。对 DyOCl 进行傅里叶变换红外光谱，在 543 和 744 cm ^-1处观察到的峰归因于 Dy-O 和 Dy-Cl。扫描电子显微镜分析显示不规则形状的晶体。对 DyCl ₃ ·6H ₂ O 进行了热台 XRD、热重分析以及差示扫描量热法与气相色谱仪和质谱仪联用（逸出气体分析），以了解向 DyOCl（和 Dy ₂ O ₃) 作为温度和时间的函数。