Structure and magnetic properties of Sm2Rh3Sn5 – an intergrowth of TiNiSi- and NdRh2Sn4-related slabs
Author:
Heying Birgit1, Kösters Jutta1, Hoffmann Rolf-Dieter1, Heletta Lukas1, Pöttgen Rainer1
Affiliation:
1. Institut für Anorganische und Analytische Chemie, Universität Münster , Corrensstrasse 30 , 48149 Münster , Germany
Abstract
Abstract
The stannide Sm2Rh3Sn5 was obtained by arc-melting of the elements and subsequent annealing at 1070 K in a silica tube. Sm2Rh3Sn5 crystallizes with the orthorhombic Y2Rh3Sn5 type structure, space group Cmc21, Z=4: a=444.46(8), b=2636.2(4), c=718.3(1) pm, wR=0.0711, 1761 F
2 values and 61 variables. The three crystallographically independent rhodium atoms show tricapped trigonal prismatic coordination by samarium and tin atoms. Sm2Rh3Sn5 can be considered as a simple 1:1 intergrowth structure of TiNiSi- and NdRh2Sn4-related slabs of compositions SmRhSn and SmRh2Sn4
. Temperature dependent magnetic susceptibility data revealed van Vleck type behavior caused by the proximity of the exited 6H7/2 state to the 6H5/2 ground state of Sm3+, and an antiferromagnetic ordering occurs at T
N=3.5(5) K.
Publisher
Walter de Gruyter GmbH
Subject
General Chemistry
Reference41 articles.
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