ThPt2: A New Representative of Close Packed Tetragonal Structures

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• 作者：Roman Gumeniuk ; Walter Schnelle ; Ulrich Burkhardt ; Horst Borrmann ; Michael Nicklas ; Alim Ormeci ; Miroslav Kohout ; Andreas Leithe-Jasper ; Yuri Grin
• 刊名：Inorganic Chemistry
• 出版年：2015
• 出版时间：July 6, 2015
• 年：2015
• 卷：54
• 期：13
• 页码：6338-6346
• 全文大小：622K
• ISSN：1520-510X

文摘

ThPt₂ crystallizes with unique type of structure (space group I4/mmm, a = 4.1565(1) 脜, c = 14.3663(7) 脜, Pearson symbol tI12), which belongs to the group of the close packed tetragonal structures. An analysis of the chemical bonding by the electron localizability approach reveals the formation of two-dimensional layered platinum anionic substructures interlinked by strongly polar bonds to Th. Measurements of magnetic susceptibility, electrical resistivity, and specific heat show ThPt₂ to be diamagnetic with metallic type of electrical conductivity in good agreement with the calculated electronic structure (N(E_F) = 0.9 states eV^鈥? f.u.^鈥?).