کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1331567 | 979010 | 2007 | 6 صفحه PDF | دانلود رایگان |

Two new lanthanum sulfates DySO4(OH) 1 and Eu2(SO4)3(H2O)82 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) Å3, 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) Å3, 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 DySO4(OH) 1 and Eu2 (SO4)3 (H2O)82 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.Figure optionsDownload as PowerPoint slide
Journal: Journal of Solid State Chemistry - Volume 180, Issue 7, July 2007, Pages 2020–2025