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(Sr6N)[Ga5] and (Ba6N)[Ga5]: Compounds with Discrete (M6N) Octahedra and [Ga5] Clusters

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Cordier, G., Ludwig, M., Stahl, D., Schmidt, P. C., & Kniep, R. (1995). (Sr6N)[Ga5] and (Ba6N)[Ga5]: Compounds with Discrete (M6N) Octahedra and [Ga5] Clusters. Angewandte Chemie International Edition, 34(16), 1761-1763. doi:10.1002/anie.199517611.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0019-BA9A-0
Abstract
[Ga5]7− trigonal bipyramids and (M6N)9+ octahedra are present in the crystal structures of the isotypic title compounds. The charge in these phases is balanced by two electrons in metallic states: {(M6N)9+[Ga5]7− · 2e−}. This simple model of the chemical bonding is supported by band structure calculations. A section of the hexagonal crystal structure together with a pseudo-cubic unit cell is shown on the right.