@article{ref1,
title="New ternary suicide LiRh2Si2 - Structure and bonding peculiarities",
journal="Zeitschrift fur Anorganische und Allgemeine Chemie",
year="2009",
author="Dinges, T. and Rodewald, U.C. and Matar, S.F. and Eckert, H. and Pöttgen, R.",
volume="635",
number="12",
pages="1894-1903",
abstract="The silicide LiRh2Si2 was synthesized from the elements in a sealed niobium ampoule and was characterized by X-ray powder and single-crystal diffraction: FeMo2B2 type (ordered version of U3Si2), P4/mbm, a = 698.1(5), c = 274.6(4) pm, wR2 = 0.0842, 186 F2 values and 11 variables. The rhodium and silicon atoms build up a covalently bonded three-dimensional [Rh2Si2] network (244-248 pm Rh-Si), in which the lithium atoms fill larger channels which extend along the c axis. A similar structural arrangement occurs in LiY2Si2, however, the strong difference in size between rhodium and yttrium leads to different distortions. LiRh2Si 2 and LiY2Si2 are isopointal rather than isotypic. The crystal chemistry and bonding peculiarities of both suicides are discussed on the basis of ab initio electronic structure calculations. 7Li solid-state NMR studies on LiY2Si2 revealed restricted motional narrowing due to lithium atomic diffusion in the temperature range 170-450 K. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA.<p /><p>Language: en</p>",
language="en",
issn="0044-2313",
doi="10.1002/zaac.200900102",
url="http://dx.doi.org/10.1002/zaac.200900102"
}