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Be3 Ru: Polar Multiatomic Bonding in the Closest Packing of Atoms.

ABSTRACT: The new phase Be3 Ru crystallizes with TiCu3 -type structure (space group Pmmn (59), a=3.7062(1) Å, b=4.5353(1) Å, c=4.4170(1) Å), a coloring variant of the hexagonal closest packing (hcp) of spheres. The electronic structure revealed that Be3 Ru has a pseudo-gap close to the Fermi level. A strong charge transfer from Be to Ru was observed from the analysis of electron density within the Quantum Theory of Atoms in Molecules (QTAIM) framework and polar three- and four-atomic Be-Ru bonds were observed from the ELI-D (electron localizability indicator) analysis. This situation is very similar to the recently investigated Be5 Pt and Be21 Pt5 compounds. The unusual crystal chemical feature of Be3 Ru is that different charged species belong to the same closest packing, contrary to typical inorganic compounds, where the cationic components are located in the voids of the closest packing formed by anions. Be3 Ru is a diamagnet displaying metallic electrical resistivity.

SUBMITTER: Agnarelli L 

PROVIDER: S-EPMC9210927 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature

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Be<sub>3</sub> Ru: Polar Multiatomic Bonding in the Closest Packing of Atoms.

Agnarelli Laura L   Prots Yurii Y   Schmidt Marcus M   Krnel Mitja M   Svanidze Eteri E   Burkhardt Ulrich U   Leithe-Jasper Andreas A   Grin Yuri Y  

ChemistryOpen 20220601 6

The new phase Be<sub>3</sub> Ru crystallizes with TiCu<sub>3</sub> -type structure (space group Pmmn (59), a=3.7062(1) Å, b=4.5353(1) Å, c=4.4170(1) Å), a coloring variant of the hexagonal closest packing (hcp) of spheres. The electronic structure revealed that Be<sub>3</sub> Ru has a pseudo-gap close to the Fermi level. A strong charge transfer from Be to Ru was observed from the analysis of electron density within the Quantum Theory of Atoms in Molecules (QTAIM) framework and polar three- and  ...[more]

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