Rb2Cu3CeTe5: a quaternary semiconducting compound with a two-dimensional polytelluride framework
Abstract
Rb
2
Cu
3
CeTe
5
has been synthesized from the reaction of Cu and Ce in a molten alkali metal/polytelluride flux. The compound crystallizes in the monoclinic space group, C2/m (no. 12) with a=18.6884(1) Å, b=6.2384(2) Å, c=12.5264(3) Å, β=112.795(1)°, V=1346.34(5) Å
3
, and Z=4. Rb
2
Cu
3
CeTe
5
is two-dimensional with 1/∞[Cu
3
CeTe
5
]
2–
layers built from one-dimensional 1/∞ [Cu
2
CeTe
5
]
3–
chains that are ‘stitched’ together by distorted tetrahedral Cu atoms; the compound is paramagnetic and a narrow-gap p-type semiconductor.
, and Z=4. Rb
2
Cu
3
CeTe
5
is two-dimensional with 1/∞[Cu
3
CeTe
5
]
2–
layers built from one-dimensional 1/∞ [Cu
2
CeTe
5
]
3–
chains that are ‘stitched’ together by distorted tetrahedral Cu atoms; the compound is paramagnetic and a narrow-gap p-type semiconductor.
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