Bell-Like [Ga5] Clusters in Eu3Li5+xGa5–x (x = 0.15)

Authors

  • Anatolii Fedorchuk,

    1. Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Str. 40, 01187 Dresden, Germany, Fax: +49-351-4646-4002
    2. Lviv National University of Veterinary Medicine and Biotechnologies, Pekarska Str. 50, 79010 Lviv, Ukraine
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  • Yurii Prots,

    1. Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Str. 40, 01187 Dresden, Germany, Fax: +49-351-4646-4002
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  • Walter Schnelle,

    1. Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Str. 40, 01187 Dresden, Germany, Fax: +49-351-4646-4002
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  • Yuri Grin

    1. Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Str. 40, 01187 Dresden, Germany, Fax: +49-351-4646-4002
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  • Dedicated to Professor John D. Corbett on the occasion of his 85th birthday

Abstract

The new ternary gallide Eu3Li5+xGa5–x was synthesized from its constituent elements that were heated at 900 °C and then subsequently annealed at 300 °C for 10 months. The crystal structure was established from single-crystal diffraction data. A new type of discrete gallium cluster was found inEu3Li5+xGa5–x, namely a bell-like [Ga5] unit with one single-,one four- and three three-bonded atoms. On the basis of its structural features, magnetic properties and calculated electronic density of states (DOS), the title compound is represented as [Eu2+]3[Li+]5[(1b)Ga4–]1[(3b)Ga2–]3[(4b)Ga1–]1 (xb = number of bonds, where x = 1–4). The new structural unit observed in this compound is compared with other [Gan] (n = 2–6) clusters found in binary gallium compounds.

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