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Issue 0, 1966
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Protactinium(V) bromides


The preparation of protactinium pentabromide, PaBr5, from the pentoxide has been investigated; the most satisfactory method is the reaction between bromine vapour and a mixture of protactinium pentoxide and carbon at 600–700°, in a sealed evacuated vessel. The yellow-green oxytribromide, PaOBr3, which is obtained as a by-product of this reaction, is more conveniently prepared by the action of oxygen on the pentabromide at 350°. The oxytribromide disproportionates at 500° in a vacuum, to give the pentabromide and the white dioxybromide PaO2Br. Some chemical properties, infrared spectra, and X-ray powder diffraction data are reported for these bromides.

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Article type: Paper
DOI: 10.1039/J19660000262
J. Chem. Soc. A, 1966, 262-264

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    Protactinium(V) bromides

    D. Brown and P. J. Jones, J. Chem. Soc. A, 1966, 262
    DOI: 10.1039/J19660000262

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