1. Scandium-rich ternary coloring variants of the cubic Ag7+xMg26–x type
- Author
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Jutta Kösters, Rainer Pöttgen, Nataliya L. Gulay, Yaroslav M. Kalychak, Christian Paulsen, and Maximilian Kai Reimann
- Subjects
010405 organic chemistry ,Chemistry ,Intermetallic ,Tantalum ,chemistry.chemical_element ,General Chemistry ,010402 general chemistry ,01 natural sciences ,0104 chemical sciences ,Crystal ,Crystallography ,Nickel ,Scandium ,Ternary operation ,Diffractometer ,Palladium - 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 Sc50T13In3phases are site occupancy (coloring) variants of the aristotype Ag7+xMg26–x(Fm$$ \bar{3} $$3¯,cF264). Refinements of the occupancy parameters indicated one mixed occupied site for each crystal, leading to the refined compositions Sc50Ni13.16(1)In2.84(1), Sc49.59(1)Ru13In3.41(1), and Sc50Pd13.65(2)In2.35(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
- Published
- 2020
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