Crystal chemistry of natural and synthetic lead oxyhalides. Part I. Crystal structure of Pb13O10Cl6
Crystals of lead oxychloride Pb13O10Cl6 have been synthesized on the basis of high-temperature solid-state reactions. The Pb13O10Cl6 structure was studied using X-ray single-crystal diffraction analysis. The compound is monoclinic, and the space group is C2/c; the unit-cell dimensions are a = 16.1699(14), b = 7.0086(6), c = 23.578(2) Å, β = 97.75°, and V = 2647.6(4) Å3. The structure has been solved by direct methods and refined to R 1 = 0.0505 for 2671 observed unique reflections. The structure is a 3D framework consisting of OPb4 tetrahedrons. Chlorine atoms are located in the framework channels. The structure contains seven symmetrically independent Pb atoms, which are coordinated by 2 to 4 O2− and 2 to 4 Cl− anions. The synthesized compound is compared with other natural and synthetic lead oxyhalides.
KeywordsCrystal Chemistry Lead Site Bond Valence Parameter Framework Channel Galena Oxidation
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