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Title: Hydrothermal synthesis and crystal structure of a new inorganic/organic hybrid of scandium sulfate: (H{sub 2}en)Sc{sub 2}(SO{sub 4}){sub 4}.(H{sub 2}O){sub 0.72}

The first organically templated layered structure of scandium sulfate, (H{sub 2}en)Sc{sub 2}(SO{sub 4}){sub 4}.(H{sub 2}O){sub 0.72}, (en=ethylenediamine) was synthesized by a hydrothermal method and characterized by single crystal X-ray diffraction. In the title compound, scandium ions are bridged by sulfate groups with a ratio of 1:2 into a 4{sub 3}{sup 6} layer structure. These layers are parallel packed and separated from each other by ethylenediammonium dications and water molecules. The title compound crystallizes in the monoclinic space group P2/c, with cell parameters a=8.5966(13)A, b=5.1068(8)A, c=18.847(3)A, {beta}=91.210(3){sup o}, V=827.2(2)A{sup 3} and Z=2. Refinement gave R{sub 1}[I>2{sigma}(I)]=0.0354 and wR{sub 2}[I>2{sigma}(I)]=0.0878. Thermogravimetric analysis indicates that this material is thermally stable to above 400 deg. C.
Authors:
 [1] ;  [2] ;  [2]
  1. Materials Science Division, Argonne National Laboratory, 9700 S Cass Avenue, Argonne, IL 60439 (United States). E-mail: j.lu@anl.gov
  2. Materials Science Division, Argonne National Laboratory, 9700 S Cass Avenue, Argonne, IL 60439 (United States)
Publication Date:
OSTI Identifier:
20785022
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 179; Journal Issue: 5; Other Information: DOI: 10.1016/j.jssc.2006.02.006; PII: S0022-4596(06)00086-7; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; HYDROTHERMAL SYNTHESIS; LAYERS; MONOCLINIC LATTICES; MONOCRYSTALS; SCANDIUM IONS; SCANDIUM SULFATES; SPACE GROUPS; THERMAL GRAVIMETRIC ANALYSIS; X-RAY DIFFRACTION