TY - JOUR
T1 - Syntheses and structures of the quaternary alkali-metal bismuth coinage-metal chalcogenides K3Bi5Cu2S10, CsBi2CuS4, RbBi2.66CuSe5, and CsBiAg2S3
AU - Fu Qiang Huang, Qiang Huang
AU - Mitchell, K.
AU - Ibers, J. A.
N1 - Funding Information:
This research was supported by NSF Grant DMR97-09351. This work made use of facilities supported by the MRSEC program of the National Science Foundation (DMR00-76097) at the Materials Research Center of Northwestern University.
PY - 2001/7/26
Y1 - 2001/7/26
N2 - The four compounds K3Bi5Cu2S10, CsBi2CuS4, RbBi2.66CuSe5, and CsBiAg2S3 were synthesized at 873 K by reactions of the elements in the reactive fluxes of A2Q3 (A = K, Rb, Cs; Q = S, Se). All crystallographic data were collected at 153 K. K3Bi5Cu2S10 crystallizes in the Rb3Bi5Cu2S10 structure type in space group Pnnm of the orthorhombic system with two formula units in a cell of dimensions a = 14.173(2) Å, b = 17.690(2) Å, c = 4.0362(5) Å; CsBi2CuS4 crystallizes as a racemic twin in space group Cmc21 of the orthorhombic system with four formula units in a cell of dimensions a = 4.0730(6) Å, b = 14.212(2) Å, c = 14.568(2) Å; RbBi2.66CuSe5 crystallizes in a new structure type in space group Cmcm of the orthorhombic system with four formula units in a cell of dimensions a = 4.1961(9) Å, b = 14.420(3) Å, c = 18.266(4) Å; CsBiAg2S3 crystallizes in a new structure type in space group P21/c of the monoclinic system with four formula units in a cell of dimensions a = 13.3523(14) Å, b = 8.1052(8) Å, c = 6.9162(7) Å, β = 99.766(2)°. K3Bi5Cu2S10, CsBi2CuS4, and RbBi2.66CuSe5 are related; they are all tunnel structures with the A atoms located in tunnels formed by BiQ6 octahedra and CuQ4 tetrahedra. CsBiAg2S3 is composed of two-dimensional ∞2[BiAg2S31-] layers separated by the Cs atoms. The ∞2[BiAg2S31-] layer is built from BiS6 octahedra, linear AgS2 groups, and AgS4 tetrahedra.
AB - The four compounds K3Bi5Cu2S10, CsBi2CuS4, RbBi2.66CuSe5, and CsBiAg2S3 were synthesized at 873 K by reactions of the elements in the reactive fluxes of A2Q3 (A = K, Rb, Cs; Q = S, Se). All crystallographic data were collected at 153 K. K3Bi5Cu2S10 crystallizes in the Rb3Bi5Cu2S10 structure type in space group Pnnm of the orthorhombic system with two formula units in a cell of dimensions a = 14.173(2) Å, b = 17.690(2) Å, c = 4.0362(5) Å; CsBi2CuS4 crystallizes as a racemic twin in space group Cmc21 of the orthorhombic system with four formula units in a cell of dimensions a = 4.0730(6) Å, b = 14.212(2) Å, c = 14.568(2) Å; RbBi2.66CuSe5 crystallizes in a new structure type in space group Cmcm of the orthorhombic system with four formula units in a cell of dimensions a = 4.1961(9) Å, b = 14.420(3) Å, c = 18.266(4) Å; CsBiAg2S3 crystallizes in a new structure type in space group P21/c of the monoclinic system with four formula units in a cell of dimensions a = 13.3523(14) Å, b = 8.1052(8) Å, c = 6.9162(7) Å, β = 99.766(2)°. K3Bi5Cu2S10, CsBi2CuS4, and RbBi2.66CuSe5 are related; they are all tunnel structures with the A atoms located in tunnels formed by BiQ6 octahedra and CuQ4 tetrahedra. CsBiAg2S3 is composed of two-dimensional ∞2[BiAg2S31-] layers separated by the Cs atoms. The ∞2[BiAg2S31-] layer is built from BiS6 octahedra, linear AgS2 groups, and AgS4 tetrahedra.
KW - Bismuth
KW - Chalcogenide
KW - Crystal structure
KW - Solid-state compound
KW - Synthesis
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U2 - 10.1016/S0925-8388(01)01400-1
DO - 10.1016/S0925-8388(01)01400-1
M3 - Article
AN - SCOPUS:0035954799
SN - 0925-8388
VL - 325
SP - 84
EP - 90
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
IS - 1-2
ER -