Peter Höhn, Daniel Menendez Créspo, Matej Bobnar, Primož Koželj, Mitja Krnel, Yurii Prots, Marcus Schmidt, Frank Wagner, Yuri Grin
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引用次数: 0
Abstract
New TiNiSi-type compounds ALiAu (A = Ca, Sr, Ba, Eu, Yb) were obtained in the form of mm-sized single crystals by high-temperature centrifugation-aided filtration (HTCAF) from lithium melt. They are the first examples of TiNiSi-type representatives containing Li and a transition metal. The metallic phases show paramagnetic (Ca) or diamagnetic (Sr, Ba, Yb) behavior or antiferromagnetic ordering below 19 K (Eu). A new structural description is based on a hexagonal close packing with A occupying all octahedral and Li occupying half of the tetrahedral voids in an ordered fashion. Chemical bonding analysis supports the structural description and reveals the formation of eight-atomic stella-quadrangula bonds pinned on the empty tetrahedral holes, a bonding picture known from elemental metals.
期刊介绍：
Chemistry—A European Journal is a truly international journal with top quality contributions (2018 ISI Impact Factor: 5.16). It publishes a wide range of outstanding Reviews, Minireviews, Concepts, Full Papers, and Communications from all areas of chemistry and related fields.
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