Abstract
AbstractThe intermetallic compounds SrAuIn and SrAuIn3 were synthesised from the elements in sealed tantalum ampoules in a high‐frequency furnace. Both indides were studied by X‐ray powder and single crystal diffraction: TiNiSi type, Pnma, a = 772.2(4), b = 478.6(2), c = 844.0(4) pm, wR2 = 0.0474, 748 F2 values, 20 variables for SrAuIn and BaNiSn3 type, I4mm, a = 456.97(8), c = 1243.7(3) pm, wR2 = 0.0381, 397 F2 values, 18 variables for SrAuIn3. The latter reveals a small degree of Au/In disorder. Both structures consist of three‐dimensional [AuIn], respectively [AuIn3] polyanionic networks with short Au–In distances (287–291 pm in SrAuIn and 268–284 pm in SrAuIn3. The latter indide reveals also In–In bonding (294–323 pm). The larger voids within the polyanionic networks of both structures are filled by the strontium cations.
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