摘要
One new quaternary rare-earth sulfide, FeSm6Si2S（14）, has been synthesized by a facile solid-state route with boron as the reducing reagent. It crystallizes in the noncentrosymmetric hexagonal space group P63, belonging to the Ce6Al（3.33）S（14） structure-type, and the AxRE3MQ7 family. Its crystal structure features a 3-D framework constructed by SmS 8 bicapped trigonal prisms, where Fe and Si atoms occupy the octahedral（2a） and tetrahedral（2c） voids, respectively. The FeS 6 octahedra are connected with each other to form a chain along the b direction. FeSm6Si2S（14） represents a new chemical composition among the large family of AxRE3MQ7 compounds. The other related compounds containing transition metal are also discussed.
One new quaternary rare-earth sulfide, FeSm6Si2S（14）, has been synthesized by a facile solid-state route with boron as the reducing reagent. It crystallizes in the noncentrosymmetric hexagonal space group P63, belonging to the Ce6Al（3.33）S（14） structure-type, and the AxRE3MQ7 family. Its crystal structure features a 3-D framework constructed by SmS 8 bicapped trigonal prisms, where Fe and Si atoms occupy the octahedral（2a） and tetrahedral（2c） voids, respectively. The FeS 6 octahedra are connected with each other to form a chain along the b direction. FeSm6Si2S（14） represents a new chemical composition among the large family of AxRE3MQ7 compounds. The other related compounds containing transition metal are also discussed.
基金
supported by the Higher Education Science Foundation of Jiangsu Province(No.15KJB150031)
State Key Laboratory of Structural Chemistry(No.20150009)
Yangzhou Engineering Technology Research Center of Petrochemical New Materials(YZM2015086)
