Hydrothermal synthesis and crystal structure of a new inorganic/organic hybrid of scandium sulfate: (H2en)Sc2(SO4)4·(H2O)0.72

The first organically templated layered structure of scandium sulfate, (H2en)Sc2(SO4)4·(H2O)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 436 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)Å, b=5.1068(8)Å, c=18.847(3)Å, β=91.210(3)°β=91.210(3)°, V=827.2(2)Å3 and Z=2Z=2. Refinement gave R1[I>2σ(I)]=0.0354 and wR2[I>2σ(I)]=0.0878. Thermogravimetric analysis indicates that this material is thermally stable to above 400 °C.

Graphical abstractThe first organically templated layered structure of scandium sulfate, (H2en)Sc2(SO4)4·(H2O)0.72, (en=ethylenediamine) was synthesized by a hydrothermal method and characterized by single crystal X-ray diffraction. Thermogravimetric analysis indicates that this material is thermally stable to above 400 °C.Figure optionsDownload full-size imageDownload as PowerPoint slide