Synthesis and Characterization of the Ternary Thiobismuthates A9Bi13S24 (A = K, Rb)
Alahmary, Fatimah S.
KAUST DepartmentPhysical Sciences and Engineering (PSE) Division
KAUST Grant NumberBAS/1/1302–01–01
MetadataShow full item record
AbstractTernary alkali metal thiobismuthates ABiS (A = K, Rb) were synthesized by direct combination reactions at 650 °C. The compounds crystallize in the monoclinic space group C2/m (no. 12) with cell parameters a = 30.919(1) Å, b = 4.1008(2) Å, c = 20.9072(9) Å, β = 105.826(3)° for KBiS (1) and a = 31.823(6) Å, b = 4.1177(8) Å, c = 21.086(4) Å, β = 105.62(3)° for RbBiS (2). The crystal structure of 1 contains a 3D [KBiS] polyanionic framework, whereas 2 consists of 2D [RbBiS] polyanionic slabs stacked along . Both 1 and 2 are semiconductors with a band gap of 1.4 and 1.3 eV, respectively, which is supported by an electronic structure calculation. 1 melts congruently at 580 °C, while 2 melts incongruently at 575 °C. 1 and 2 are airstable and insoluble in water and organic solvents.
CitationDavaasuren B, Alahmari F, Dashjav E, Khanderi J, Rothenberger A (2016) Synthesis and Characterization of the Ternary Thiobismuthates A9Bi13S24 (A = K, Rb). Zeitschrift für anorganische und allgemeine Chemie 642: 1480–1485. Available: http://dx.doi.org/10.1002/zaac.201600159.
SponsorsThis research was supported by King Abdullah University of Science and Technology (KAUST) baseline fund BAS/1/1302–01–01.