2021
DOI: 10.1002/ange.202014284
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“Überschuss”‐Elektronen in LuGe

Abstract: Das Monogermanid LuGe wurde durch Hochdruck‐Hochtemperatursynthese (5–15 GPa, 1023–1423 K) erhalten. Die Kristallstruktur wurde aus Einkristall‐Röntgenbeugungsdaten gelöst und verfeinert (Strukturtyp FeB, Raumgruppe Pnma, a=7.660 (2) Å, b=3.875 (1) Å und c=5.715 (2) Å, RF=0.036 für 206 symmetrie‐unabhängige Reflexe). Die Analyse der chemischen Bindung wurde mit Hilfe quantenchemischer Techniken im Ortsraum durchgeführt. Neben den erwarteten 2c‐Ge‐Ge‐Bindungen im Germaniumpolyanion wurde eine eher unerwartete v… Show more

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“…Ultimately, the Eu sublattice is more typical of the ZrNiAl type which is known to achieve more efficient packing than the TiNiSi type. Since the TiNiSi type is known to be reluctant to heteroatomic localized (Zinc blend like) covalent bonding, 29 the very similar atomic size between Mn and Pt may also play a role. However, EuxYb1-xMnPt is stabilized in the TiNiSi type with MnPt4 tetrahedra that are only slightly distorted.…”
mentioning
confidence: 99%
“…Ultimately, the Eu sublattice is more typical of the ZrNiAl type which is known to achieve more efficient packing than the TiNiSi type. Since the TiNiSi type is known to be reluctant to heteroatomic localized (Zinc blend like) covalent bonding, 29 the very similar atomic size between Mn and Pt may also play a role. However, EuxYb1-xMnPt is stabilized in the TiNiSi type with MnPt4 tetrahedra that are only slightly distorted.…”
mentioning
confidence: 99%