Ordered CaCu5-type phases REPd2Zn3 (RE = Y, La–Nd, Sm, Gd

Ordered CaCu₅-type phases REPd₂Zn₃ (RE = Y, La–Nd, Sm, Gd–Dy)

Published:2022-04-28 Issue:7-8 Volume:77 Page:543-547
ISSN:0932-0776
Container-title:Zeitschrift für Naturforschung B
language:en
Short-container-title:

Author:

Gerke Birgit¹,Block Theresa¹,Pöttgen Rainer¹

Affiliation:

1. Institut für Anorganische und Analytische Chemie, Universität Münster , Corrensstrasse 30, 48149 Münster , Germany

Abstract

Abstract The ternary intermetallic phases REPd2Zn3 (RE = Y, La–Nd, Sm, Gd–Dy) were synthesized from the elements by induction melting in sealed niobium ampoules followed by annealing. The CaCu5-type samples (space group P6/mmm) were characterized through Guinier powder patterns. The structures of YPd2Zn3 (a = 523.91(4), c = 430.88(3) pm, wR2 = 0.0570, 96 F 2 values, 9 variables) and NdPd2Zn3 (a = 535.08(7), c = 427.81(6) pm, wR2 = 0.0217, 123 F 2 values, 9 variables) were refined from single-crystal X-ray diffractometer data. The zinc atoms form Kagome layers in AA stacking which leave trigonal prismatic voids for the palladium and hexagonal prismatic voids for the rare earth atoms. The Zn–Zn distances within the Kagome network of YPd2Zn3 are 262 pm and the Pd–Zn distances in the Pd@Zn6 trigonal prisms are 263 pm.

Publisher

Walter de Gruyter GmbH

Subject

General Chemistry

Link

https://www.degruyter.com/document/doi/10.1515/znb-2022-0046/pdf

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