Abstract
The isostructural compounds KLa1.28Bi3.72S8(I), RbLa1±xBi4±xS8(II), RbCe0.84Bi4.16S8(III), KCe1±xBi4±xS8(IV), KPr1±xB4±xS8(V) and KNd1±xBi4±xS8(VI) were synthesized. The structures of compounds (I) and (III) were determined by single crystal X-ray diffraction. They crystallize in the orthorhombicPnmaspace group (#62),a=16.6524(9) Å ,b=4.0712(2) Å,c=21.589(1) Å,R1=0.0397, wR2=0.0743 (all data) for (I) anda=16.7469(2) Å ,b=4.0528(1) Å,c=21.753(1) Å,R1=0.0345, wR2=0.0613 (all data) for (III). The structure type found in these compounds is made up of NaCl-type and Gd2S3-type fragments which connect to form tunnels filled with alkali metal ions. The structure has three types of metal positions, a six-coordinate type and two with higher coordination numbers, seven and eight. The NaCl-type fragment contains the six-coordinate positions which are exclusively occupied by Bi atoms, while the Gd2S3-type fragment contains the seven- and eight-coordinate positions which display mixed bismuth/lanthanide atom occupancy. The compounds are semiconductors with band gaps around 1.0 eV and they melt incongruently between 770 and 800°C. The electrical conductivities of the La analogs and magnetic properties of the Ce analogs are reported.
| Original language | English |
|---|---|
| Pages (from-to) | 151-162 |
| Number of pages | 12 |
| Journal | Journal of Solid State Chemistry |
| Volume | 143 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Mar 1999 |
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ASJC Scopus subject areas
- Inorganic Chemistry
- Physical and Theoretical Chemistry
- Materials Chemistry
Cite this
ALn1±xBi4±xS 8(A=K,Rb;Ln=La,Ce,Pr,Nd) : New Semiconducting Quaternary Bismuth Sulfides. / Iordanidis, Lykourgos; Schindler, Jon L.; Kannewurf, Carl R.; Kanatzidis, Mercouri G.
In: Journal of Solid State Chemistry, Vol. 143, No. 2, 03.1999, p. 151-162.Research output: Contribution to journal › Article
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TY - JOUR
T1 - ALn1±xBi4±xS 8(A=K,Rb;Ln=La,Ce,Pr,Nd)
T2 - New Semiconducting Quaternary Bismuth Sulfides
AU - Iordanidis, Lykourgos
AU - Schindler, Jon L.
AU - Kannewurf, Carl R.
AU - Kanatzidis, Mercouri G
PY - 1999/3
Y1 - 1999/3
N2 - The isostructural compounds KLa1.28Bi3.72S8(I), RbLa1±xBi4±xS8(II), RbCe0.84Bi4.16S8(III), KCe1±xBi4±xS8(IV), KPr1±xB4±xS8(V) and KNd1±xBi4±xS8(VI) were synthesized. The structures of compounds (I) and (III) were determined by single crystal X-ray diffraction. They crystallize in the orthorhombicPnmaspace group (#62),a=16.6524(9) Å ,b=4.0712(2) Å,c=21.589(1) Å,R1=0.0397, wR2=0.0743 (all data) for (I) anda=16.7469(2) Å ,b=4.0528(1) Å,c=21.753(1) Å,R1=0.0345, wR2=0.0613 (all data) for (III). The structure type found in these compounds is made up of NaCl-type and Gd2S3-type fragments which connect to form tunnels filled with alkali metal ions. The structure has three types of metal positions, a six-coordinate type and two with higher coordination numbers, seven and eight. The NaCl-type fragment contains the six-coordinate positions which are exclusively occupied by Bi atoms, while the Gd2S3-type fragment contains the seven- and eight-coordinate positions which display mixed bismuth/lanthanide atom occupancy. The compounds are semiconductors with band gaps around 1.0 eV and they melt incongruently between 770 and 800°C. The electrical conductivities of the La analogs and magnetic properties of the Ce analogs are reported.
AB - The isostructural compounds KLa1.28Bi3.72S8(I), RbLa1±xBi4±xS8(II), RbCe0.84Bi4.16S8(III), KCe1±xBi4±xS8(IV), KPr1±xB4±xS8(V) and KNd1±xBi4±xS8(VI) were synthesized. The structures of compounds (I) and (III) were determined by single crystal X-ray diffraction. They crystallize in the orthorhombicPnmaspace group (#62),a=16.6524(9) Å ,b=4.0712(2) Å,c=21.589(1) Å,R1=0.0397, wR2=0.0743 (all data) for (I) anda=16.7469(2) Å ,b=4.0528(1) Å,c=21.753(1) Å,R1=0.0345, wR2=0.0613 (all data) for (III). The structure type found in these compounds is made up of NaCl-type and Gd2S3-type fragments which connect to form tunnels filled with alkali metal ions. The structure has three types of metal positions, a six-coordinate type and two with higher coordination numbers, seven and eight. The NaCl-type fragment contains the six-coordinate positions which are exclusively occupied by Bi atoms, while the Gd2S3-type fragment contains the seven- and eight-coordinate positions which display mixed bismuth/lanthanide atom occupancy. The compounds are semiconductors with band gaps around 1.0 eV and they melt incongruently between 770 and 800°C. The electrical conductivities of the La analogs and magnetic properties of the Ce analogs are reported.
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U2 - 10.1006/jssc.1998.8049
DO - 10.1006/jssc.1998.8049
M3 - Article
AN - SCOPUS:0001014401
VL - 143
SP - 151
EP - 162
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
SN - 0022-4596
IS - 2
ER -