Hydrothermal synthesis, crystal structure and properties of 2-D and 3-D lanthanide sulfates

• Published in: Journal of solid state chemistry Vol. 180; no. 7; pp. 2020 - 2025
• Main Authors: Xu, Yan, Ding, Shaohua, Zheng, Xuefang
• Format: Journal Article
• Language: English
• Published: San Diego, CA Elsevier Inc 01.07.2007; Elsevier
• Subjects: Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Crystal structure; Dysprosium; DYSPROSIUM SULFATES; Europium; EUROPIUM SULFATES; Exact sciences and technology; Growth from solutions; HYDROTHERMAL SYNTHESIS; Inorganic compounds; INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; LANTHANUM SULFATES; Materials science; Methods of crystal growth; physics of crystal growth; MONOCLINIC LATTICES; MONOCRYSTALS; Physics; Single-crystal and powder diffraction; SPACE GROUPS; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; Sulfate; SYMMETRY; THERMAL GRAVIMETRIC ANALYSIS; X-RAY DIFFRACTION; X-ray diffraction and scattering; Hydrothermal synthesis; Dysprosium; Sulfate; Europium; Crystal structure; Space groups; Thermogravimetry; Rare earths Sulfides; XRD; Symmetry groups; Monoclinic lattices; Sulfates; Inductively coupled plasma; Lanthanum
• ISSN: 0022-4596; 1095-726X
• DOI: 10.1016/j.jssc.2007.05.005

Two new lanthanum sulfates DySO 4(OH) 1 and Eu 2(SO 4) 3(H 2O) 8 2 have been hydrothermally synthesized. The colorless crystals were characterized by IR, TGA, ICP and XRD. The structure was determined by single-crystal X-ray diffraction. 1 crystallizes with monoclinic symmetry, space group P2(1)/ n [ a=7.995(4) Å, b=10.945(5) Å, c=8.164(4) Å, α=90°, β=93.619(6)°, γ=90°, V=713.0(5) Å 3, Z=8]. It displays a three-dimensional framework, based on the novel Dy–O chains connected by the sulfate groups through helical chains. 2 crystallizes with monoclinic symmetry, space group C2/ c, [ a=13.5605(17) Å, b=6.7676(8) Å, c=18.318(2) Å, α=90°, β=102.265(2)°, γ=90°, V=1642.7 (4) Å 3, Z=4]. Its layered framework is attained by the europium atoms connected by the sulfate groups arranged in a helical manner. Two new lanthanum sulfates DySO 4(OH) 1 and Eu 2 (SO 4) 3 (H 2O) 8 2 have been hydrothermally synthesized. The colorless crystals were characterized by IR, TGA, ICP and XRD. The structure was determined by single-crystal X-ray diffraction. It displays a three dimensional framework, based on the novel Dy-O chains connected by the sulfate groups through helical chains. [Display omitted]