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- Title
Lithium alkaline earth tetrelides of the type Li<sub>2</sub>AeTt (Ae = Ca, Ba, Tt = Si, Ge, Sn, Pb): synthesis, crystal structures and physical properties.
- Authors
Stoiber, Dominik; Bobnar, Matej; Höhn, Peter; Niewa, Rainer
- Abstract
Single crystals of the compounds Li2AeTt (Ae = Ca, Ba, Tt = Si, Ge, Sn, Pb) were grown in reactive lithium melts in sealed tantalum ampoules from an equimolar ratio of the alkaline earth metal and the respective group 4 element. All compounds, with the exception of Li2CaSn and Li2CaPb, are isotypic and crystallize in an orthorhombic unit cell (space group Pmmn, no. 59). The crystal structure can be characterized as superimposed corrugated networks of Li2Tt connected by calcium or barium atoms within the third dimension. Li2CaSn and Li2CaPb crystallize in the cubic space group Fm3¯m (no. 225) in a Heusler-type (MnCu2Al) structure. According to magnetic susceptibility and electric resistivity measurements, the compounds Li2BaGe, Li2BaSn, and Li2BaPb represent diamagnetic activated semiconductors.
- Subjects
ALKALINE earth oxides; CRYSTAL structure; SINGLE crystals; SPACE groups; SEMICONDUCTORS
- Publication
Zeitschrift für Naturforschung B: A Journal of Chemical Sciences, 2017, Vol 72, Issue 11, p847
- ISSN
0932-0776
- Publication type
Article
- DOI
10.1515/znb-2017-0103