Synthesis, Structure and Properties of Li₂Rh₃B₂

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.

Department(s)

Physics

Keywords and Phrases

Crystal Growth; Diamagnetic Materials; Electronic Structure; Lattice Constants; Magnetic Susceptibility; Stoichiometry; X Ray Diffraction Analysis; Metal Flux; Orthorhombic Space Group; Ternary Lithium Rhodium Boride; Lithium Compounds

International Standard Serial Number (ISSN)

0022-4596

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2007 Elsevier, All rights reserved.

Publication Date

01 Apr 2007

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