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Y4Be33Pt16 – a non-centrosymmetric cage superconductor with multi-centre bonding in the framework

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Abstract

The new ternary compound Y4Be33Pt16 was prepared from elements by arc melting, and its crystal structure was determined from single-crystal X-ray diffraction data (space group I[4 with combining macron]3d, a = 13.4849(3) Å). The material is the first representative of a new structure type of complex intermetallic compounds and reveals a cage-like crystal structure. Analysis of chemical bonding by means of the electron localizabilty approach indicates ionic interaction of yttrium with the rest of the crystal structure, characteristic for cage compounds, in particular for clathrates. In contrast to the mostly two-centre bonding in the framework of clathrates, the new compound is characterized by a multi-centre interaction within the framework, caused by the demand of the valence electrons in the system. The non-centrosymmetric material enters the superconducting state at TC = 0.9 K.

Graphical abstract: Y4Be33Pt16 – a non-centrosymmetric cage superconductor with multi-centre bonding in the framework

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Supplementary files

Article information


Submitted
15 Apr 2020
Accepted
11 Jun 2020
First published
25 Jun 2020

This article is Open Access

Dalton Trans., 2020, Advance Article
Article type
Paper

Y4Be33Pt16 – a non-centrosymmetric cage superconductor with multi-centre bonding in the framework

A. Amon, E. Svanidze, Y. Prots, M. Nicklas, U. Burkhardt, A. Ormeci, A. Leithe-Jasper and Y. Grin, Dalton Trans., 2020, Advance Article , DOI: 10.1039/D0DT01374A

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