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Synthesis and structure of new layered copper oxide iodides, Sr2CuO2I2 and Sr2Cu3O4I2

Synthesis and structure of new layered copper oxide iodides, Sr2CuO2I2 and Sr2Cu3O4I2
Synthesis and structure of new layered copper oxide iodides, Sr2CuO2I2 and Sr2Cu3O4I2
The first layered copper oxide iodides Sr2CuO2I2 and Sr2Cu3O4I2 have been synthesised by reaction of SrO, SrI2 and CuO in evacuated silica ampoules. Sr2CuO2I2 crystallises with a K2NiF4-type structure and contains infinite CuO2 planes separated by double SrI rocksalt layers. Sr2Cu3O4I2 contains sheets of Cu3O4 stoichiometry separated by fluorite Sr2I2 layers. Incorporation of the iodide ion results in an in-plane Cu–O bond distance of 2.015 Å in Sr2CuO2I2 whilst the two distinct copper sites in Sr2Cu3O4I2possess near identical in-plane Cu–O interactions ? 1.96 Å.
high-pressure, superconductivity
1507-1509
Knee, Christopher S.
de0aa2be-ddad-45dd-97f5-ae2f25de5207
Weller, Mark T.
36a60b56-049f-466c-a1d7-39d6b0d85ff4
Knee, Christopher S.
de0aa2be-ddad-45dd-97f5-ae2f25de5207
Weller, Mark T.
36a60b56-049f-466c-a1d7-39d6b0d85ff4

Knee, Christopher S. and Weller, Mark T. (2003) Synthesis and structure of new layered copper oxide iodides, Sr2CuO2I2 and Sr2Cu3O4I2. Journal of Materials Chemistry, 13 (7), 1507-1509. (doi:10.1039/b303071g).

Record type: Article

Abstract

The first layered copper oxide iodides Sr2CuO2I2 and Sr2Cu3O4I2 have been synthesised by reaction of SrO, SrI2 and CuO in evacuated silica ampoules. Sr2CuO2I2 crystallises with a K2NiF4-type structure and contains infinite CuO2 planes separated by double SrI rocksalt layers. Sr2Cu3O4I2 contains sheets of Cu3O4 stoichiometry separated by fluorite Sr2I2 layers. Incorporation of the iodide ion results in an in-plane Cu–O bond distance of 2.015 Å in Sr2CuO2I2 whilst the two distinct copper sites in Sr2Cu3O4I2possess near identical in-plane Cu–O interactions ? 1.96 Å.

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Published date: 2003
Keywords: high-pressure, superconductivity
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Identifiers

Local EPrints ID: 19998
URI: http://eprints.soton.ac.uk/id/eprint/19998
DOI: doi:10.1039/b303071g
PURE UUID: 2ec104e6-4c2f-46de-ad55-924892a3a547

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Date deposited: 24 Feb 2006
Last modified: 15 Mar 2024 06:21

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Contributors

Author: Christopher S. Knee
Author: Mark T. Weller

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