Cu3MgCl2(OH)6 and the bond-valence parameters of the OH-Cl bond

The title compound is a new mineral consisting of sheets made from edge‐sharing Cu(OH)4Cl2 and Mg(OH)6 octahedra. The sheets are only weakly linked by O—H—Cl bridges, giving rise to perfect cleavage along (001) and to strong texture effects in powder diffraction measurements. Owing to low bond‐valen...

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Published in:Acta crystallographica. Section B, Structural science Structural science, 2007-02, Vol.63 (1), p.157-160
Main Authors: Malcherek, Thomas, Schlüter, Jochen
Format: Article
Language:English
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bond-valence parameters
Chemical bonds
Crystal structure
Minerals
powder diffraction
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Schlüter, Jochen
description The title compound is a new mineral consisting of sheets made from edge‐sharing Cu(OH)4Cl2 and Mg(OH)6 octahedra. The sheets are only weakly linked by O—H—Cl bridges, giving rise to perfect cleavage along (001) and to strong texture effects in powder diffraction measurements. Owing to low bond‐valence sums at the Cl sites of Cu3MgCl2(OH)6 and of several related compounds, bond‐valence parameters for the H/Cl pair have been refined to R0 = 1.336 and b = 0.53 Å based on the crystal structures of selected hydroxychlorides.
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source Full-Text Journals in Chemistry (Open access); Wiley-Blackwell Read & Publish Collection
subjects bond-valence parameters
Chemical bonds
Crystal structure
Minerals
powder diffraction
title Cu3MgCl2(OH)6 and the bond-valence parameters of the OH-Cl bond
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