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Structure Determination of γ‐Brass‐Related Composite Structures in the Ni–Zn System: A Guided Tour by a (3+1)‐Dimensional Space Description
Author(s) -
Jana Partha Pratim,
Lidin Sven
Publication year - 2013
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201200780
Subject(s) - brass , orthorhombic crystal system , chemistry , crystallography , superspace , composite number , space (punctuation) , diffraction , crystal structure , domain (mathematical analysis) , group (periodic table) , octahedron , copper , composite material , mathematical physics , physics , mathematical analysis , materials science , optics , mathematics , linguistics , philosophy , organic chemistry , supersymmetry
Three incommensurately modulated γ‐brass‐related composite structures in the Ni–Zn system have been solved from X‐ray single crystal diffraction data using a 3+1 dimensional super space description. The compounds at the end points of the compositional domain NiZn 3– δ (–0.09 ≤ δ ≤ 0.34) and NiZn 3.30 crystallize in the orthorhombic superspace group Fmmm (α00)0s0 { F = [(1/2, 1/2, 0, 0); (1/2, 0, 1/2, 0); (0, 1/2, 1/2, 0)]} with the following fundamental cell dimensions a = 4.165(1) Å, b = 8.883(2) Å, c = 12.545(3) Å, q ≈ 0.6311 a *; a = 4.161(2) Å, b = 8.876(3) Å, c = 12.535(4) Å, q ≈ 0.6314 a * and a = 4.177(2) Å, b = 8.899(1) Å, c = 12.570(2) Å, q ≈ 0.6378 a *.