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Abstract:
During the search for a possible replacement of the europium in the structure Eu3Li5+xGa5−x (x = 0.15) in order to facilitate the analysis of the chemical bonding in the bell–like [Ga5] clusters, the isostructural compound Sr3Li5Ga5 (space group R (Formula presented.) m, a = 9.6040(5) Å, c = 22.061(1) Å) was discovered. A detailed investigation of the bonding situation in the first five–membered nonconvex Ga cluster utilizing the electron localizability approach became possible, revealing not only first signs of a transition from a Zintl to a Wade cluster, but also the presence of a [Sr6] polycation. © 2021 The Authors. Zeitschrift für anorganische und allgemeine Chemie published by Wiley-VCH GmbH