Framework Structures of Interconnected Layers in Calcium Iron Arsenides

Autor:	Fabian Nitsche, Christian Maak, C. Hieke, Roman Pobel, Tobias Stürzer, Catrin Löhnert, Dirk Johrendt, Juliane Stahl
Rok vydání:	2014
Předmět:	Diffraction Superconductivity Chemistry chemistry.chemical_element Crystal structure Calcium Arsenide Inorganic Chemistry Crystallography chemistry.chemical_compound Tetrahedron Physical and Theoretical Chemistry Platinum Palladium
Zdroj:	Inorganic Chemistry. 53:6235-6240
ISSN:	1520-510X 0020-1669
DOI:	10.1021/ic5007567
Popis:	The new calcium iron arsenide compounds Ca(n(n+1)/2)(Fe(1-x)M(x))(2+3n)M'(n(n-1)/2)As((n+1)(n+2)/2) (n = 1-3; M = Nb, Pd, Pt; M' = □, Pd, Pt) were synthesized and their crystal structures determined by single-crystal X-ray diffraction. The series demonstrates the structural flexibility of iron arsenide materials, which otherwise prefer layered structures, as is known from the family of iron-based superconductors. In the new compounds, iron arsenide tetrahedral layers are bridged by iron-centered pyramids, giving rise to so far unknown frameworks of interconnected FeAs layers. Channels within the structures are occupied with calcium and palladium or platinum, respectively. Common basic building blocks are identified that lead to a better understanding of the building principles of these structures and their relation to CaFe4As3.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f1687d4b0728c4d3cad15289586fd3e0 https://doi.org/10.1021/ic5007567 Zobrazit plný text záznamu