La5Ir1.73In4.27 with Lu5Ni2In4-type structure
Author:
Dominyuk Nataliya1, Zaremba Vasyl’ I.1, Pöttgen Rainer2
Affiliation:
1. Inorganic Chemistry Department , Ivan Franko National University of Lviv , Kyryla and Mephodiya Street 6 , 79005 Lviv , Ukraine 2. Institut für Anorganische und Analytische Chemie , Universität Münster , Corrensstrasse 30 , 48149 Münster , Germany
Abstract
Abstract
Single crystals of La5Ir1.73In4.27 were grown from a sample of the starting composition 47La: 17Ir: 36 In by arc-melting, followed by a long annealing sequence in a muffle furnace. La5Ir1.73In4.27 crystallizes with the Lu5Ni2In4-type structure, space group Pbam, which was refined from single-crystal X-ray diffractometer data: a = 834.0(2), b = 1862.2(4), c = 385.31(8) pm, wR2 = 0.0278, 1165 F
2 values and 37 variables. The 4h iridium site shows a small degree of Ir/In mixing. Geometrically one can describe the La5Ir1.73In4.27 structure as a simple 4:1 intergrowth variant of CsCl and AlB2-related slabs. The iridium and indium atoms form a one-dimensional meandering [Ir1.73In4.27]
δ– polyanion (292 pm Ir–In and 327 pm In–In) which is embedded in a lanthanum matrix.
Funder
Deutscher Akademischer Austauschdienst
Publisher
Walter de Gruyter GmbH
Subject
General Chemistry
Reference23 articles.
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