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Crystal Structures of AlCr 2 and MoSi 2 : Same Structure Type vs. Different Bonding Pattern
Author(s) -
Milosavljević Milica D.,
Burkhardt Ulrich,
Moll Philip J. W.,
König Markus,
Borrmann Horst,
Grin Yuri
Publication year - 2021
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202100817
Subject(s) - diffraction , crystallography , fabrication , materials science , group (periodic table) , crystal structure , unit (ring theory) , x ray crystallography , type (biology) , resolution (logic) , phase (matter) , transition metal , chemistry , optics , computer science , mathematics , physics , geology , medicine , biochemistry , catalysis , paleontology , mathematics education , alternative medicine , organic chemistry , pathology , artificial intelligence
In a joint effort utilizing modified sample preparation, microscopy, X‐ray diffraction and micro‐fabrication, it became possible to prepare single crystals of the “hidden” phase AlCr 2 . High‐resolution X‐ray diffraction analysis is described in detail for two crystals with the similar overall composition, but different degree of disorder, which seems to be the main cause for the differing unit cell parameters. Chemical bonding analysis of AlCr 2 in comparison to prototypical MoSi 2 shows pronounced differences reflecting the interchange of main group element vs. transition metal as majority component.