Abstract

The scandium-rich intermetallic compounds Sc₅₀T₁₃In₃ (T = Ni, Ru, Pd) were synthesized from the elements in sealed tantalum crucibles in an induction furnace. The samples were studied through Guinier powder patterns and their structures were refined from single-crystal X-ray diffractometer data. The Sc₅₀T₁₃In₃ phases are site occupancy (coloring) variants of the aristotype Ag_7+xMg_26–x (Fm\( \bar{3} \), cF264). Refinements of the occupancy parameters indicated one mixed occupied site for each crystal, leading to the refined compositions Sc₅₀Ni_13.16(1)In_2.84(1), Sc_49.59(1)Ru₁₃In_3.41(1), and Sc₅₀Pd_13.65(2)In_2.35(2). The complex structures can be explained by a condensation of cubes (CN 8), sphenocorona (CN 10), and icosahedra (CN 12). The samples with nickel and palladium are Pauli paramagnets.

Graphic abstract

中文翻译：

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Ag 7 + x Mg 26-x型立方的富含的三元变色

摘要

 在感应炉中，用密封的钽坩埚中的元素合成了富scan的金属间化合物Sc ₅₀ T ₁₃ In ₃（T = Ni，Ru，Pd）。通过Guinier粉末图案研究了样品，并从单晶X射线衍射仪数据中提炼了它们的结构。Sc ₅₀ T ₁₃ In _3个阶段是Agristo +型Ag _{7+ x} Mg _{26– x}（Fm \（\ bar {3} \），cF264）。占有参数的细化表明每个晶体有一个混合的占据位点，从而导致精制的成分Sc ₅₀ Ni _13.16（1） In _2.84（1），Sc _49.59（1） Ru ₁₃ In _3.41（1）和Sc ₅₀ Pd _{13.65 （2）}在_{2.35（2）中}。复杂的结构可以用立方体（CN 8），鞘翅目（CN 10）和二十面体（CN 12）的缩合来解释。含镍和钯的样品是泡利顺磁体。

图形摘要