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  “Excess” electrons in LuGe

Freccero, R., Hübner, J.-M., Prots, Y., Schnelle, W., Schmidt, M., Wagner, F. R., et al. (2021). “Excess” electrons in LuGe. Angewandte Chemie International Edition, 60(12), 6457-6461. doi:10.1002/anie.202014284.

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Freccero, Riccardo1, Autor           
Hübner, Julia-Maria1, Autor           
Prots, Yurii2, Autor           
Schnelle, Walter3, Autor           
Schmidt, Markus4, Autor           
Wagner, Frank R.5, Autor           
Schwarz, Ulrich6, Autor           
Grin, Yuri7, Autor           
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              
4Marcus Schmidt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863415              
5Frank Wagner, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863409              
6Ulrich Schwarz, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863423              
7Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863413              

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Schlagwörter: chemical bonding, germanium, high-pressure synthesis, intermetallic compound, lutetium
 Zusammenfassung: Abstract The monogermanide LuGe is obtained via high-pressure high-temperature synthesis (5?15?GPa, 1023?1423?K). The crystal structure is solved from single-crystal X-ray diffraction data (structure type FeB, space group Pnma, a=7.660(2)?Å, b=3.875(1)?Å, and c=5.715(2)?Å, RF=0.036 for 206 symmetry independent reflections). The analysis of chemical bonding applying quantum-chemical techniques in position space was performed. It revealed?beside the expected 2c-Ge-Ge bonds in the germanium polyanion?rather unexpected four-atomic bonds between lutetium atoms indicating the formation of a polycation by the excess electrons in the system Lu3+(2b)Ge2??1?e?. Despite the reduced VEC of 3.5, lutetium monogermanide is following the extended 8-N rule with the trend to form lutetium-lutetium bonds utilizing the electrons left after satisfying the bonding needs in the anionic Ge-Ge zigzag chain.

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Sprache(n): eng - English
 Datum: 2021-03-152021-03-15
 Publikationsstatus: Erschienen
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 Ort, Verlag, Ausgabe: -
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 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1002/anie.202014284
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Titel: Angewandte Chemie International Edition
  Alternativer Titel : Angew. Chem. Int. Ed.
Genre der Quelle: Zeitschrift
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Affiliations:
Ort, Verlag, Ausgabe: John Wiley & Sons, Ltd
Seiten: - Band / Heft: 60 (12) Artikelnummer: - Start- / Endseite: 6457 - 6461 Identifikator: ISBN: 1433-7851