Abstract
The reaction of Cu or Ag with mixed polychalcogenide flux A2SxTey (A = K, Rb, Cs) yielded RbCuTeS3 (1), CsCuTeS3 (2), α-KAgTeS3 (3), β-KAgTeS3 (4), RbAgTeS3 (5), and CsAgTeS3 (6) possessing new structure types. Compounds 1, 4, 5, and 6 are two-dimensional and isostructural. They crystallize in the monoclinic space group P21/c, with a = 7.434(3) Å, b = 10.526(3) Å, c = 8.234(3) Å, β= 106.13(3)°, V = 619.0(7) Å3 for 1; a = 7.340(2) Å, b = 10.647(2) Å, c = 8.504(2) Å, β= 106.46(2)°, V = 637.4(3) Å3 for 4; a = 7.566(8) Å, b = 10.724(8) Å, c = 8.586(9) Å, β= 106.36(8)°, V = 668(2) Å3 for 5; and a = 7.832(6) Å, b = 10.803(7) Å, c = 8.668(8) Å, β = 106.05(6)°, V = 705(2) Å3 for 6. The structure consists of anionic [MTeS3]nn- (M = Cu or Ag) layers and charge-compensating alkali ions between the layers. Each layer is composed of tetrahedrally coordinated Cu+ or Ag+ centers and trigonal pyramidal TeS32- units, joined together via bridging S atoms. Compound 2 is three-dimensional and crystallizes in the cubic space group P213 with a = 9.107(3) Å and V = 755.4(2) Å3. Its framework is composed of trigonal planar Cu+ centers and TeS32- units. Compound 3 is two-dimensional and crystallizes in the monoclinic space group P21/n with a = 6.171(2) Å, b = 16.406(4) Å, c = 6.318(3) Å, β = 97.32(3)°, and V = 634.4(7) Å3. The structure of [AgTeS3]nn- layers is different from those of 1, 4, 5, and 6, but the TeS32- units bridge Ag+ centers by the same pattern. All compounds are found to be wide band gap semiconductors with RbCuTeS3 possessing the narrowest at 1.95 eV. Thermal analysis studies show that 3, 5, and 6 are the most stable.
| Original language | English |
|---|---|
| Pages (from-to) | 1890-1898 |
| Number of pages | 9 |
| Journal | Journal of the American Chemical Society |
| Volume | 116 |
| Issue number | 5 |
| Publication status | Published - Mar 9 1994 |
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Cite this
AMTeS3 (A = K, Rb, Cs; M = Cu, Ag) : A new class of compounds based on a new polychalcogenide anion, TeS32-. / Zhang, Xiang; Kanatzidis, Mercouri G.
In: Journal of the American Chemical Society, Vol. 116, No. 5, 09.03.1994, p. 1890-1898.Research output: Contribution to journal › Article
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TY - JOUR
T1 - AMTeS3 (A = K, Rb, Cs; M = Cu, Ag)
T2 - A new class of compounds based on a new polychalcogenide anion, TeS32-
AU - Zhang, Xiang
AU - Kanatzidis, Mercouri G
PY - 1994/3/9
Y1 - 1994/3/9
N2 - The reaction of Cu or Ag with mixed polychalcogenide flux A2SxTey (A = K, Rb, Cs) yielded RbCuTeS3 (1), CsCuTeS3 (2), α-KAgTeS3 (3), β-KAgTeS3 (4), RbAgTeS3 (5), and CsAgTeS3 (6) possessing new structure types. Compounds 1, 4, 5, and 6 are two-dimensional and isostructural. They crystallize in the monoclinic space group P21/c, with a = 7.434(3) Å, b = 10.526(3) Å, c = 8.234(3) Å, β= 106.13(3)°, V = 619.0(7) Å3 for 1; a = 7.340(2) Å, b = 10.647(2) Å, c = 8.504(2) Å, β= 106.46(2)°, V = 637.4(3) Å3 for 4; a = 7.566(8) Å, b = 10.724(8) Å, c = 8.586(9) Å, β= 106.36(8)°, V = 668(2) Å3 for 5; and a = 7.832(6) Å, b = 10.803(7) Å, c = 8.668(8) Å, β = 106.05(6)°, V = 705(2) Å3 for 6. The structure consists of anionic [MTeS3]nn- (M = Cu or Ag) layers and charge-compensating alkali ions between the layers. Each layer is composed of tetrahedrally coordinated Cu+ or Ag+ centers and trigonal pyramidal TeS32- units, joined together via bridging S atoms. Compound 2 is three-dimensional and crystallizes in the cubic space group P213 with a = 9.107(3) Å and V = 755.4(2) Å3. Its framework is composed of trigonal planar Cu+ centers and TeS32- units. Compound 3 is two-dimensional and crystallizes in the monoclinic space group P21/n with a = 6.171(2) Å, b = 16.406(4) Å, c = 6.318(3) Å, β = 97.32(3)°, and V = 634.4(7) Å3. The structure of [AgTeS3]nn- layers is different from those of 1, 4, 5, and 6, but the TeS32- units bridge Ag+ centers by the same pattern. All compounds are found to be wide band gap semiconductors with RbCuTeS3 possessing the narrowest at 1.95 eV. Thermal analysis studies show that 3, 5, and 6 are the most stable.
AB - The reaction of Cu or Ag with mixed polychalcogenide flux A2SxTey (A = K, Rb, Cs) yielded RbCuTeS3 (1), CsCuTeS3 (2), α-KAgTeS3 (3), β-KAgTeS3 (4), RbAgTeS3 (5), and CsAgTeS3 (6) possessing new structure types. Compounds 1, 4, 5, and 6 are two-dimensional and isostructural. They crystallize in the monoclinic space group P21/c, with a = 7.434(3) Å, b = 10.526(3) Å, c = 8.234(3) Å, β= 106.13(3)°, V = 619.0(7) Å3 for 1; a = 7.340(2) Å, b = 10.647(2) Å, c = 8.504(2) Å, β= 106.46(2)°, V = 637.4(3) Å3 for 4; a = 7.566(8) Å, b = 10.724(8) Å, c = 8.586(9) Å, β= 106.36(8)°, V = 668(2) Å3 for 5; and a = 7.832(6) Å, b = 10.803(7) Å, c = 8.668(8) Å, β = 106.05(6)°, V = 705(2) Å3 for 6. The structure consists of anionic [MTeS3]nn- (M = Cu or Ag) layers and charge-compensating alkali ions between the layers. Each layer is composed of tetrahedrally coordinated Cu+ or Ag+ centers and trigonal pyramidal TeS32- units, joined together via bridging S atoms. Compound 2 is three-dimensional and crystallizes in the cubic space group P213 with a = 9.107(3) Å and V = 755.4(2) Å3. Its framework is composed of trigonal planar Cu+ centers and TeS32- units. Compound 3 is two-dimensional and crystallizes in the monoclinic space group P21/n with a = 6.171(2) Å, b = 16.406(4) Å, c = 6.318(3) Å, β = 97.32(3)°, and V = 634.4(7) Å3. The structure of [AgTeS3]nn- layers is different from those of 1, 4, 5, and 6, but the TeS32- units bridge Ag+ centers by the same pattern. All compounds are found to be wide band gap semiconductors with RbCuTeS3 possessing the narrowest at 1.95 eV. Thermal analysis studies show that 3, 5, and 6 are the most stable.
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M3 - Article
AN - SCOPUS:0001163526
VL - 116
SP - 1890
EP - 1898
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
SN - 0002-7863
IS - 5
ER -