Synthesis, structure and properties of Li2Rh3B2 |
| |
Authors: | Mark S Bailey Helmut Claus John A Schlueter |
| |
Affiliation: | a Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA b Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, USA |
| |
Abstract: | Li2Rh3B2 has been synthesized at 1000 °C from a stoichiometric mix of rhodium and boron and an excess of lithium. Li2Rh3B2 crystallizes in the orthorhombic space group Pbam (no. 55, Z=2) with room temperature lattice constants a=5.7712(1) Å, b=9.4377(2) Å, c=2.8301(1) Å and cell volume 154.149(6) Å3. The structure was solved from single crystal X-ray diffraction yielding the final R indices (all data) R1=2.8% and wR2=4.7%. The structure is a distortion of the CeCo3B2 structure type, containing a network of Rh6B trigonal prisms and short Li-Li contacts of 2.28(2) Å. Li2Rh3B2 is a diamagnetic metal with a room temperature resistivity of 19 μΩ cm, as determined by magnetic susceptibility and single crystal transport measurements. The measured diamagnetism and electronic structure calculations show that Li2Rh3B2 contains rhodium in a d10 configuration. |
| |
Keywords: | Metal flux Lithium flux Ternary lithium rhodium boride Crystal growth |
本文献已被 ScienceDirect 等数据库收录! |
|