Abstract
Five new quaternary isostructural rare-earth sulfides, Al0.57Gd3(Si0.27Al0.73)S7 (1), Al0.55Dy3(Si0.34Al0.66)S7 (2), Al0.50Y3(Si0.50Al0.50)S7 (3), Al0.44Gd3(Si0.70Al0.30)S7 (4) and In0.33Sm3SiS7 (5), have been synthesized by facile solid-state reactions. They crystallize in the 3-D ALn3EQ7 structure type in the hexagonal chiral space group P63. The structures feature a 3-D host framework constructed by Ln-S bicapped trigonal prisms, in which the octahedral and tetrahedral interspaces are occupied by A and E atoms, respectively. The investigation of optical and magnetic properties of 4 indicates that it is a semiconductor and behaves antiferromagnetic-like interaction.
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Supported by the National Natural Science Foundation of China (Grant No. 20701037), 973 Program (Grant No. 2009CB939801), the Key Project from the Chinese Academy of Sciences (Grant Nos. KJCX2.YW.M10 and KJCX2.YW.319) and the Natural Science Foundation of Fujian Province (Grant No. 2006L2005)
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Guo, S., Guo, G. & Huang, J. Syntheses, structures and properties of five chiral quaternary sulfides, Al x Ln3(Si y Al1−y )S7 (Ln = Y, Gd, Dy) and In0.33Sm3SiS7 . Sci. China Ser. B-Chem. 52, 1609–1615 (2009). https://doi.org/10.1007/s11426-009-0238-1
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DOI: https://doi.org/10.1007/s11426-009-0238-1