Ternary Stannides LiTSn4 (T = Ru, Rh, Ir)Chemical Bonding and Physical Properties

Pure samples of the ternary stannides LiTSn4 (T = Ru, Rh, Ir) have been synthesized from the elements in sealed tantalum tubes. They crystallize with an ordered version of the PdGa5 type. LiTSn4 (T = Ru, Rh, Ir) are all metallic conductors and Pauli paramagnets. Spectroscopic measurements indicate s...

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Published in:The journal of physical chemistry. B 2003-03, Vol.107 (9), p.1943-1948
Main Authors: Wu, Zhiyun, Eckert, Hellmut, Senker, Jürgen, Johrendt, Dirk, Kotzyba, Gunter, Mosel, Bernd D, Trill, Henning, Hoffmann, Rolf-Dieter, Pöttgen, Rainer
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container_end_page 1948
container_issue 9
container_start_page 1943
container_title The journal of physical chemistry. B
container_volume 107
creator Wu, Zhiyun
Eckert, Hellmut
Senker, Jürgen
Johrendt, Dirk
Kotzyba, Gunter
Mosel, Bernd D
Trill, Henning
Hoffmann, Rolf-Dieter
Pöttgen, Rainer
description Pure samples of the ternary stannides LiTSn4 (T = Ru, Rh, Ir) have been synthesized from the elements in sealed tantalum tubes. They crystallize with an ordered version of the PdGa5 type. LiTSn4 (T = Ru, Rh, Ir) are all metallic conductors and Pauli paramagnets. Spectroscopic measurements indicate significant differences in the chemical bonding properties:  As revealed by both 119Sn Mössbauer spectroscopy and solid-state NMR data, the local electron distribution at the tin site is more anisotropic in LiRuSn4 compared to the other two materials. In addition, 7Li Knight shift and spin-lattice relaxation times indicate that LiRuSn4 has a much higher electron density at the lithium atom arising from conduction electrons at the Fermi level. These findings are in good agreement with the results of DFT band structure calculations.
doi_str_mv 10.1021/jp0220635
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title Ternary Stannides LiTSn4 (T = Ru, Rh, Ir)Chemical Bonding and Physical Properties
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