Cover Feature: Bell–like [Ga₅] clusters in Sr₃Li₅Ga₅: synthesis, crystal structure and bonding analysis. (Z. Anorg. Allg. Chem. 18/2021)

Abstract

This cover picture shows the unique bell‐like [Ga5] cluster and its corresponding ELI‐D maxima, in front of a drawing of an old school bell. First observed in the related compound Eu3Li5Ga5 these clusters are the first and only known galliumclusters to be nonconvex, which makes an investigation of the intra cluster bonding of particular interest. Initially hindered by the presence of europium, an application of the electron localizability approach (ELI‐D) became possible with Sr3Li5Ga5 due to the absence of f electrons. The resulting insights into the bonding situation are described in great detail in our article 202100147.

Be3Ru: Polar Multiatomic Bonding in the Closest Packing of Atoms

“…This resembles Zintl‐ and Wade‐type phases (cf. SrGe 6, [23] Sr 3 Li 5 Ga 5, [24] Ca 2 Ga 4 Ge 6, [25] Dy(Cu 0.18 Ga 0.82 ) 3.7 [26] ) more than ‘classical’ intermetallic compounds. [27] On the other hand, the DOS of Be 3 Ru in the vicinity of the Fermi level is similar to that of the recently investigated Be 21 Pt 5 [3] and Be 5 Pt compounds, [4] which show a strong electron transfer from Be to Pt.…”