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  Spatial Separation of Covalent, Ionic, and Metallic Interactions in Mg11Rh18B8 and Mg3Rh5B3

Alekseeva, A. M., Abakumov, A. M., Leithe-Jasper, A., Schnelle, W., Prots, Y., Van Tendeloo, G., et al. (2013). Spatial Separation of Covalent, Ionic, and Metallic Interactions in Mg11Rh18B8 and Mg3Rh5B3. Chemistry - A European Journal, 19, 17860-17870. doi:10.1002/chem.201301512.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0017-F388-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-9C77-D
Genre: Journal Article

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 Creators:
Alekseeva, Anastasia M.1, Author              
Abakumov, Artem M.2, Author
Leithe-Jasper, Andreas3, Author              
Schnelle, Walter4, Author              
Prots, Yuri5, Author              
Van Tendeloo, Gustaaf2, Author
Antipov, Eugene V.2, Author
Grin, Yuri6, Author              
Affiliations:
1Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
2external, ou_persistent22              
3Andreas Leithe-Jasper, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863406              
4Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863441              
5Yuri Prots, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863424              
6Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863413              

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 Abstract: The crystal structures of Mg11Rh18B8 and Mg3Rh5B3 have been investigated by using single-crystal X-ray diffraction. Mg11Rh18B8: space group P4/mbm; a=17.9949(7), c=2.9271(1)angstrom; Z=2. Mg3Rh5B3: space group Pmma; a=8.450(2), b=2.8644(6), c=11.602(2)angstrom; Z=2. Both crystal structures are characterized by trigonal prismatic coordination of the boron atoms by rhodium atoms. The [BRh6] trigonal prisms form arrangements with different connectivity patterns. Analysis of the chemical bonding by means of the electron-localizability/electron-density approach reveals covalent BRh interactions in these arrangements and the formation of BRh polyanions. The magnesium atoms that are located inside the polyanions interact ionically with their environment, whereas, in the structure parts, which are mainly formed by Mg and Rh atoms, multicenter (metallic) interactions are observed. Diamagnetic behavior and metallic electron transport of the Mg11Rh18B8 and Mg3Rh5B3 phases are in agreement with the bonding picture and the band structure.

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Language(s): eng - English
 Dates: 2013-12-23
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: ISI: 000328531000028
DOI: 10.1002/chem.201301512
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Title: Chemistry - A European Journal
  Other : Chem. Eur. J.
Source Genre: Journal
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Publ. Info: Weinheim, Germany : VCH Verlagsgesellschaft
Pages: - Volume / Issue: 19 Sequence Number: - Start / End Page: 17860 - 17870 Identifier: ISSN: 0947-6539
CoNE: /journals/resource/954926979058