Four new deficient compounds in the R6B2C2QI4 family, LasCaSn2.75S4 1, Y6A10.67Ge2S14 2, Er5.33Si4S14 3 and Er4Ge4SI4 4, have been obtained via a precursor/flux method. Single-crystal analysis indicated that their cry...Four new deficient compounds in the R6B2C2QI4 family, LasCaSn2.75S4 1, Y6A10.67Ge2S14 2, Er5.33Si4S14 3 and Er4Ge4SI4 4, have been obtained via a precursor/flux method. Single-crystal analysis indicated that their crystal structures consist of three types of building blocks： RS7 （R = La/Ca for 1, R = Y for 2, R = Er for 3 and 4） mono-triangonal prism, CS6 （C = A1 for 1, C = Sn（2） for 2, C = Si（2） for 3, C = Ge（2） for 4） octahedron, and BS4 （B = Si for 1, B = Sn（1） for 2, B = Si（1） for 3, B = Ge（1） for 4） tetrahedron, as any other compounds belong to the R6B2C2Q14 family.展开更多
Two new quaternary sulfides,La3Sn0.25GeS71 and Sm3 Sn0.25GeS72,have been synthesized by a facile solid-state reaction,and their crystal structures were determined by singlecrystal X-ray diffraction analysis.The two co...Two new quaternary sulfides,La3Sn0.25GeS71 and Sm3 Sn0.25GeS72,have been synthesized by a facile solid-state reaction,and their crystal structures were determined by singlecrystal X-ray diffraction analysis.The two compounds crystallize in the P6 3 space group,and the crystal data are as follows-La3Sn0.25GeS7：a=10.3335（7）,c=5.8455（7）,Z=2;Sm3Sn0.25GeS7：a=9.999（3）,c=5.787（2）,Z=2.Single-crystal analysis indicated that the two compounds consist of three types of building blocks：LnS 8 anti-tetragonal prism,SnS 6 octahedron,and GeS 4 tetrahedron.展开更多
A new quaternary thiophosphate Rb_2FeP_2S_6 was synthesized by the alkali metal halide flux method.The compound crystallizes in the monoclinic space group P2_1/c（No.14） with a = 6.042（3）,b = 12.338（6）,c = 9.045...A new quaternary thiophosphate Rb_2FeP_2S_6 was synthesized by the alkali metal halide flux method.The compound crystallizes in the monoclinic space group P2_1/c（No.14） with a = 6.042（3）,b = 12.338（6）,c = 9.045（4） ？,b = 124.25（2）°,V = 557.3（5） ？~3 and Z = 2.Its structure features 1-D infinite _∞~1[FeP_2S_6]^（2-） chains and counter cations Rb~＋.It shows a band gap of 2.03 eV.The nearest intra-chain Fe^（2＋） cations are antiferromagnetically coupled with each other,and there are weak ferromagnetic-like interactions between neighboring _∞1[FeP_2S_6]（2-） chains,resulting in two successive magnetic phase transitions.展开更多
基金Supported by NNSFC(90922035,21003126)the Key Project from CAS(KJCX2-YW-H01,KJCX2-EW-H03)NSF of Fujian Province(A0420002)
文摘Four new deficient compounds in the R6B2C2QI4 family, LasCaSn2.75S4 1, Y6A10.67Ge2S14 2, Er5.33Si4S14 3 and Er4Ge4SI4 4, have been obtained via a precursor/flux method. Single-crystal analysis indicated that their crystal structures consist of three types of building blocks： RS7 （R = La/Ca for 1, R = Y for 2, R = Er for 3 and 4） mono-triangonal prism, CS6 （C = A1 for 1, C = Sn（2） for 2, C = Si（2） for 3, C = Ge（2） for 4） octahedron, and BS4 （B = Si for 1, B = Sn（1） for 2, B = Si（1） for 3, B = Ge（1） for 4） tetrahedron, as any other compounds belong to the R6B2C2Q14 family.
基金Supported by the NNSF of China (20821061)Key Project from the CAS (KJCX2-YW-M10,KJCX2-EW-H03)the 973 Program (2009CB939801)
文摘Two new quaternary sulfides,La3Sn0.25GeS71 and Sm3 Sn0.25GeS72,have been synthesized by a facile solid-state reaction,and their crystal structures were determined by singlecrystal X-ray diffraction analysis.The two compounds crystallize in the P6 3 space group,and the crystal data are as follows-La3Sn0.25GeS7：a=10.3335（7）,c=5.8455（7）,Z=2;Sm3Sn0.25GeS7：a=9.999（3）,c=5.787（2）,Z=2.Single-crystal analysis indicated that the two compounds consist of three types of building blocks：LnS 8 anti-tetragonal prism,SnS 6 octahedron,and GeS 4 tetrahedron.
基金the financial support by the NSF of China(21701176)the National Postdoctoral Program for Innovative Talents(BX201600163)the China Postdoctoral Science Foundation(2016M600510)
文摘A new quaternary thiophosphate Rb_2FeP_2S_6 was synthesized by the alkali metal halide flux method.The compound crystallizes in the monoclinic space group P2_1/c（No.14） with a = 6.042（3）,b = 12.338（6）,c = 9.045（4） ？,b = 124.25（2）°,V = 557.3（5） ？~3 and Z = 2.Its structure features 1-D infinite _∞~1[FeP_2S_6]^（2-） chains and counter cations Rb~＋.It shows a band gap of 2.03 eV.The nearest intra-chain Fe^（2＋） cations are antiferromagnetically coupled with each other,and there are weak ferromagnetic-like interactions between neighboring _∞1[FeP_2S_6]（2-） chains,resulting in two successive magnetic phase transitions.
基金supported by the National Natural Science Foundation of China(21827813,21921001,22175172,22075283,and 92161125)the Youth Innovation Promotion Association of Chinese Academy of Sciences(2020303 and 2021300)the Natural Science Foundation of Fujian Provinces,China(2020J01115)。
基金financially supported by the National Natural Science Foundation of China(21827813,21921001,22175172,22075283,92161125,and U21A20508)the Youth Innovation Promotion Association of Chinese Academy of Sciences(2020303 and 2021300)。
基金supported by the National Natural Science Foundation of China (21921001,U21A20508,92161125,22075283,and 21827813)the Youth Innovation Promotion Association of Chinese Academy of Sciences (2021300,and 2020303)Fujian Science&Technology Innovation Laboratory for Optoelectronic Information (2020ZZ108)。
