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Mg4.85Rh6Si13, a Magnesium Rhodium Silicide with Silicon Clusters Si4 and Si18

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Schnelle,  Walter
Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Kessens, H., Schnelle, W., & Jung, W. (2014). Mg4.85Rh6Si13, a Magnesium Rhodium Silicide with Silicon Clusters Si4 and Si18. Zeitschrift für anorganische und allgemeine Chemie, 640(7), 1260-1264. doi:10.1002/zaac.201400105.


Cite as: http://hdl.handle.net/11858/00-001M-0000-001A-197D-2
Abstract
Mg4.85Rh6Si13 was obtained from a mixture of the elements in an alumina crucible enclosed in a tantalum ampoule at 950 degrees C. The crystal structure was solved and refined from single crystal diffraction data [space group P6(3)/mmc; a = 8.709(1) angstrom, c = 22.240(1) angstrom]. The new structure type displays a three-dimensional [Rh6Si13] framework, which contains Si-4 tetrahedra and Mg-2@Si-18 polyhedra consisting of two magnesium centered truncated tetrahedra connected by a hexagonal face. The compound is a Pauli-paramagnetic metal with a high electrical resistivity.