Intermetallic Reactivity: Ca3 Cu7.8 Al26.2 and the Role of Electronegativity in the Stabilization of Modular Structures

Inorganic Chemistry
Gordon G C PetersonDaniel C Fredrickson

Abstract

The structural chemistry of intermetallic phases is generally viewed in terms of what crystal structure will be most stable for a given combination of metallic atoms. Yet, individual atoms do not always make the best reference points. As the number of elements involved in compounds increases, their structures can often appear to be assembled from structural motifs derived from simpler compounds nearby in the phase diagram rather than fundamentally new arrangements of atoms. In this Article, we explore the notion that complex multinary phases can be viewed productively in terms of motif-preserving reactions between binary compounds, as opposed to direct reactions of the component elements. We present the targeted synthesis and structure solution of Ca3Cu7.8Al26.2, an intermetallic phase whose placement in the phase diagram is suggestive of a reaction between CaAl4 and CuAl2. Single-crystal X-ray diffraction analysis reveals that this compound crystallizes in the Y3TaNi6+xAl26 (or stuffed BaHg11) structure type and is constructed from three modules: Ca@(Cu/Al)16 polyhedra derived from the BaAl4 type, Cu@Al8 cubes, and Al13 cuboctahedra. To help understand this arrangement, we identify forces driving the reactivity of one of the s...Continue Reading

References

Dec 15, 1994·Physical Review. B, Condensed Matter·P E Blöchl
Oct 15, 1996·Physical Review. B, Condensed Matter·G Kresse, J Furthmüller
Dec 15, 1996·Physical Review. B, Condensed Matter·J P PerdewY Wang
Jan 1, 1993·Physical Review. B, Condensed Matter·G Kresse, J Hafner
Oct 28, 1996·Physical Review Letters·J P PerdewM Ernzerhof
May 31, 2002·Acta Crystallographica. Section B, Structural Science·Alec BelskyPeter Luksch
Oct 28, 2003·Inorganic Chemistry·Willa M WilliamsJulia Y Chan
Feb 18, 2004·Acta Crystallographica. Section A, Foundations of Crystallography·Gábor Oszlányi, András Süto
Dec 23, 2004·Acta Crystallographica. Section A, Foundations of Crystallography·Gábor Oszlányi, András Süto
Jan 24, 2007·Journal of Computational Chemistry·Edward SanvilleGraeme Henkelman
Feb 9, 2007·Angewandte Chemie·Daniel C FredricksonRoald Hoffmann
Jan 18, 2008·Inorganic Chemistry·Susan E Latturner, Mercouri G Kanatzidis
Jun 6, 2008·Journal of the American Chemical Society·Daniel C FredricksonJeppe Christensen
May 23, 2009·Acta Crystallographica. Section B, Structural Science·Thomas WeberWalter Steurer
May 23, 2009·Acta Crystallographica. Section B, Structural Science·Matthias ConradWalter Steurer
Jan 13, 2010·Inorganic Chemistry·Vladislav A BlatovDavide M Proserpio
Feb 25, 2009·Journal of Physics. Condensed Matter : an Institute of Physics Journal·W TangG Henkelman
Aug 2, 2012·Journal of the American Chemical Society·Melanie C FranciscoMercouri G Kanatzidis
Oct 24, 2013·Journal of the American Chemical Society·Amelia B HadlerDaniel C Fredrickson
Sep 30, 2014·Inorganic Chemistry·Dmitri O CharkinAndrei V Shevelkov
Aug 12, 2014·Journal of Chemical Theory and Computation·Veronica M BernsDaniel C Fredrickson
Dec 8, 2015·Journal of the American Chemical Society·Rie T FredricksonDaniel C Fredrickson
May 16, 2017·Angewandte Chemie·Gordon G C PetersonDaniel C Fredrickson
Oct 3, 2018·The Journal of Physical Chemistry. a·Katerina P Hilleke, Daniel C Fredrickson

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