Abstract
The mixed halogen phases SrBr x I 2− x , for which 2.00 > x > 0 were prepared both by heating weighed masses of pure SrBr 2 and SrI 2 in sealed evacuated quartz ampoules and by cocrystallization from absolute ethanol. The reaction products were examined by X-ray powder diffraction methods. Five distinct regions were observed in the phase diagram. The crystallographic characteristics of phases representative of the single phase regions, SrBr 2SrBr 1.60I 0.40, SrBr 1.40I 0.60SrBr 0.80I 1.20, and SrBr 0.30I 1.70SrI 2, are presented, and the anion distributions in the crystal structures are deduced on the basis of X-ray powder diffraction intensities.
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