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Open AccessArticle

Ternary Aluminides of a New Homologous Series—CePt2Al2 and CePt3Al3: Crystal Structures and Thermal Properties

Department of Chemistry, Moscow State University, 119991 Moscow, Russia
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Crystals 2020, 10(6), 465; https://doi.org/10.3390/cryst10060465
Received: 13 March 2020 / Revised: 21 May 2020 / Accepted: 22 May 2020 / Published: 1 June 2020
(This article belongs to the Special Issue Intermetallic)
In the process of studying the Ce–Pt–Al system, we identified CePt2Al2 and CePt3Al3, two new ternary intermetallic compounds. CePt2Al2 aluminide undergoes a structural phase transition from a low-temperature orthorhombic modification (of its own structure type, Cmme, a = 5.84138(2) Å, b = 6.39099(3) Å, c = 10.11611(5) Å) to a high-temperature tetragonal modification (CaBe2Ge2 type, P4/nmm, a = 4.3637(9) Å, c = 10.0925(14) Å) at 280(1) °C. CePt3Al3 crystallizes with a new type of structure (Cmme, a = 6.36548(6) Å, b = 5.78301(6) Å, c = 13.36245(19) Å) built of structural units of low-temperature orthorhombic CePt2Al2-type and CsCl-type. View Full-Text
Keywords: intermetallic compounds; synthesis; crystal structure; phase transition intermetallic compounds; synthesis; crystal structure; phase transition
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Murashova, E.; Morozova, Y.; Dunaev, S.; Kurenbaeva, Z.; Tursina, A. Ternary Aluminides of a New Homologous Series—CePt2Al2 and CePt3Al3: Crystal Structures and Thermal Properties. Crystals 2020, 10, 465.

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