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

被引：9

作者：

Amon, Alfred ^{[1
,2
]}

Svanidze, Eteri ^{[1
]}

Prots, Yurii ^{[1
]}

Nicklas, Michael ^{[1
]}

Burkhardt, Ulrich ^{[1
]}

Ormeci, Alim ^{[1
]}

Leithe-Jasper, Andreas ^{[1
]}

Grin, Yuri ^{[1
]}

机构：

[1] Max Planck Inst Chem Phys Fester Stoffe, Nothnitzer Str 40, D-01187 Dresden, Germany

[2] UCL, Dept Chem, London, England

来源：

DALTON TRANSACTIONS | 2020年 / 49卷 / 27期

关键词：

ELECTRON; REPRESENTATION;

D O I：

10.1039/d0dt01374a

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

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) over bar 3d, a = 13.4849(3) angstrom). 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 T-C = 0.9 K.

引用

页码：9362 / 9368

页数：7

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