Citation

Rodewald UC, Heying B, Johrendt D, Pöttgen R. Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences 2004; 59(9): 969-974.

Copyright

(Copyright © 2004)

DOI

10.1515/znb-2004-0904

PMID

unavailable

Abstract

EuIr2Si2 was synthesized from the elements in a sealed tantalum tube in a water-cooled sample chamber of an induction furnace. Lu5Si3 was obtained by arc-melting of the elements. Both suicides were investigated by X-ray powder and single crystal diffraction: BaAl4 type, I4/mmm, a = 407.4(1), c = 1010.8(7) pm, wR2 = 0.0492, 134 F2 values, 9 variables for EuIr2Si2 and Mn5Si3 type, P63/mcm, a = 820.0(1), c = 614.2(1) pm, wR2 = 0.0511, 311 F2 values and 12 variables for Lu 5Si3. The iridium and silicon atoms in EuIr 2Si2 build up a three-dimensional [Ir2Si 2] network with Ir-Si and Si-Si interactions. The europium atoms fill cages within the network. The metal-rich suicide Lu5Si3 contains columns of face-sharing, empty Lu6 octahedra and isolated silicon atoms in a distorted tri-capped trigonal prismatic coordination. Chemical bonding in these suicides is briefly discussed.

Language: en

Keywords

water; article; Silicon; aluminum; metal; synthesis; Silicide; Phosphorus compounds; Aluminum alloys; Silicides; Crystal structure; X ray powder diffraction; Single crystals; Manganese compounds; Iridium compounds; Chemical bonds; Binary alloys; atom; iridium; lutetium; silicon derivative; molecular interaction; Atoms; barium; Barium alloys; chemical bond; Chemical Bonding; Chemical bondings; cooling; Crystal Structure; europium; Europium compounds; furnace; Induction furnace; Lutetium compounds; Prismatic coordination; silicon; Silicon atoms; Single-crystal diffraction; Solid State Synthesis; Solid-state synthesis; tantalum; tube; Water-cooled sample chamber; X-ray powder