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  Polycation-Polyanion Architecture of the Intermetallic Compound Mg3-xGa1+xIr

Sichevych, O., Prots, Y., Schnelle, W., Wagner, F. R., & Grin, Y. (2022). Polycation-Polyanion Architecture of the Intermetallic Compound Mg3-xGa1+xIr. Molecules, 27(3): 659, pp. 1-13. doi:10.3390/molecules27030659.

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 Creators:
Sichevych, Olga1, Author              
Prots, Yurii2, Author              
Schnelle, Walter3, Author              
Wagner, Frank R.4, Author              
Grin, Yuri5, Author              
Affiliations:
1Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863405              
2Yuri Prots, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863424              
3Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863441              
4Frank Wagner, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863409              
5Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863413              

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 Abstract: Mg3-xGa1+xIr (x = 0.05) was synthesized by direct reaction of the elements in welded tantalum containers at 1200 degrees C and subsequent annealing at 500 degrees C for 30 days. Its crystal structure represents a new prototype and was determined by single-crystal technique as follows: space group P6(3)/mcm, Pearson symbol hP90, Z = 18, a = 14.4970(3) angstrom, c = 8.8638(3) angstrom. The composition and atomic arrangement in Mg3GaIr do not follow the 8-N rule due to the lack of valence electrons. Based on chemical bonding analysis in positional space, it was shown that the title compound has a polycationic-polyanionic organization. In comparison with other known intermetallic substances with this kind of bonding pattern, both the polyanion and the polyanion are remarkably complex. Mg3-xGa1+xIr is an example of how the general organization of intermetallic substances (e.g., formation of polyanions and polycations) can be understood by extending the principles of 8-N compounds to electron-deficient materials with multi-atomic bonding.

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Language(s): eng - English
 Dates: 2022-01-202022-01-20
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: ISI: 000755643800001
DOI: 10.3390/molecules27030659
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Title: Molecules
Source Genre: Journal
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Publ. Info: Basel : MDPI
Pages: - Volume / Issue: 27 (3) Sequence Number: 659 Start / End Page: 1 - 13 Identifier: ISSN: 1420-3049
CoNE: https://pure.mpg.de/cone/journals/resource/954925623244