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Tin‐rich stannides CePd 2 Sn 3 , RE Pd 2 Sn 4 , Pr 2 Pd 4 Sn 7 and RE 3 Pd 6 Sn 10 – Crystal chemistry and 119 Sn Mössbauer spectroscopy
Author(s) -
Engelbert Simon,
Klenner Steffen,
Reimann Maximilian Kai,
Pöttgen Rainer
Publication year - 2021
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.202100069
Subject(s) - crystallography , tin , materials science , octahedron , bimetallic strip , mössbauer spectroscopy , praseodymium , samarium , diffractometer , crystal structure , chemistry , metallurgy , metal , inorganic chemistry
The stannides CePd 2 Sn 3 , RE Pd 2 Sn 4 ( RE =Ce, Pr, Nd, Sm), Pr 2 Pd 4 Sn 7 and RE 3 Pd 6 Sn 10 ( RE =Ce, Pr) were synthesized from the elements by arc‐melting and subsequent annealing in muffle or induction furnaces. The praseodymium, neodymium and samarium compounds are reported for the first time. The structures of PrPd 2 Sn 4 and Pr 2 Pd 4 Sn 7 were refined from single crystal X‐ray diffractometer data. The common structural building units of these stannides are condensed Pd@Sn 5 square pyramids and Pd@Sn 6 octahedra. The RE 2 Pd 4 Sn 7 and RE 3 Pd 6 Sn 10 structures are intergrowth variants of CePd 2 Sn 3 and CePd 2 Sn 4 related slabs. PrPd 2 Sn 4 , NdPd 2 Sn 4 and Pr 3 Pd 6 Sn 10 show Curie‐Weiss behavior with experimental magnetic moments close to the free‐ion values. Antiferromagetric ordering is detected at Néel temperatures of 8.2(1) K (PrPd 2 Sn 4 ), 10.3(1) K (NdPd 2 Sn 4 ) and 6.7(1) K (Pr 3 Pd 6 Sn 10 ). The three stannides show metamagnetic transitions at low external field strengths. The stannides CePd 2 Sn 3 , RE Pd 2 Sn 4 ( RE =Ce, Pr, Nd) and RE 3 Pd 6 Sn 10 ( RE =Ce, Pr) were further characterized via their 119 Sn Mössbauer spectra which reflect the different tin substructures: (i) cis ‐Sn 4 units, (ii) Sn 2 pairs and (iii) square grids.