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  Bi2Pt(hP9) by Low-Temperature Reduction of Bi13Pt3I7: Reinvestigation of the Crystal Structure and Chemical Bonding Analysis

Kaiser, M., Baranov, A. I., & Ruck, M. (2014). Bi2Pt(hP9) by Low-Temperature Reduction of Bi13Pt3I7: Reinvestigation of the Crystal Structure and Chemical Bonding Analysis. Zeitschrift für anorganische und allgemeine Chemie, 640(14), 2742-2746. doi:10.1002/zaac.201400331.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-9C07-7 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-B995-7
Genre: Journal Article

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 Creators:
Kaiser, Martin1, Author
Baranov, Alexey I.2, Author              
Ruck, M.3, Author              
Affiliations:
1External Organizations, ou_persistent22              
2Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863405              
3Michael Ruck, Max Planck Fellow, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863444              

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 Abstract: Bi2Pt(hP9) or -Bi2Pt is a high-temperature modification, which is metastable below 420 degrees C. We obtained Bi2Pt(hP9) by reducing the layered bismuth subiodide Bi13Pt3I7 with a high excess of n-butyllithium at 70 degrees C. The crystals endure the heterogeneous reaction and the enormous mass loss. X-ray diffraction on a small single-crystal revealed that Bi2Pt(hP9) crystallizes in the acentric trigonal space group P31m (no. 157) with a = 657.30(7) pm and c = 616.65(7) pm. Although structure and stacking of the layers of edge-sharing [PtBi6/3] octahedra resemble the 1H-polytype of CdI2, Pt-Pt bonding interactions cause distortions that introduce polarity to the structure. Quantum chemical calculations followed by real-space bonding analysis reveal polar covalent bonding between bismuth and platinum atoms that is not limited to nearest neighbor atoms but is essentially delocalized. The Pt-Pt bond strength in Bi2Pt(hP9) is not much weaker than in the element.

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Language(s): eng - English
 Dates: 2014-09-242014-09-30
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: ISI: 000344792300015
DOI: 10.1002/zaac.201400331
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Title: Zeitschrift für anorganische und allgemeine Chemie
  Other : Journal of Inorganic and General Chemistry
  Other : J. Inorg. Gen Chem.
  Abbreviation : Z. Anorg. Allg. Chem.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 640 (14) Sequence Number: - Start / End Page: 2742 - 2746 Identifier: ISSN: 0044-2313
CoNE: /journals/resource/954925453895