A new quaternary rare-earth sulfide, Cs0.75(6)Er443(5)In3.32(6)S12 (1), is discovered by high temperature solid state reactions with a slight excess of CsCI flux. The structure is characterized by single-cryst...A new quaternary rare-earth sulfide, Cs0.75(6)Er443(5)In3.32(6)S12 (1), is discovered by high temperature solid state reactions with a slight excess of CsCI flux. The structure is characterized by single-crystal X-ray diffraction data, while crystallizes in hexagonal space group P63/m (No. 176) with a = 12.0329(6), c = 3.8693(5)A, V= 485.18(7) A3, Z = 1, Mr = 1606.57, Dc = 5.499 g/cm3,μ = 25.457 mm-1, F(000) = 752, the final R = 0.0337 and wR = 0.0904 for 328 observed reflections with I 〉 2σ(I). Its structure features a three-dimensional framework with hexagonal channels that are centered by Cs cations. Such channels are formed by double chains of edge-sharing M(1)S6 (M(1) = Er(1)/In(1)) octahedra and single chains of Er(2)S6 triprism interconnected by corner-sharing. The syntheses, single-crystal analyses, optical band gap and magnetic property are reported.展开更多
基金Supported by the National Natural Science Foundation of China(90922021,20773130,20733003,20803080,20973175)"Knowledge Innovation Program of the Chinese Academy of Sciences"(KJCX2-YW-H20,CXJJ-11-M71)
文摘A new quaternary rare-earth sulfide, Cs0.75(6)Er443(5)In3.32(6)S12 (1), is discovered by high temperature solid state reactions with a slight excess of CsCI flux. The structure is characterized by single-crystal X-ray diffraction data, while crystallizes in hexagonal space group P63/m (No. 176) with a = 12.0329(6), c = 3.8693(5)A, V= 485.18(7) A3, Z = 1, Mr = 1606.57, Dc = 5.499 g/cm3,μ = 25.457 mm-1, F(000) = 752, the final R = 0.0337 and wR = 0.0904 for 328 observed reflections with I 〉 2σ(I). Its structure features a three-dimensional framework with hexagonal channels that are centered by Cs cations. Such channels are formed by double chains of edge-sharing M(1)S6 (M(1) = Er(1)/In(1)) octahedra and single chains of Er(2)S6 triprism interconnected by corner-sharing. The syntheses, single-crystal analyses, optical band gap and magnetic property are reported.