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Issue 0, 1967
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The protactinium(IV) halides


Protactinium tetrahalides, PaX4(X = Cl, Br, and I) have been prepared by reduction of the corresponding pentahalides by either aluminium or hydrogen at 400–450°. Protactinium tetrachloride and tetrabromide react with antimony trioxide at 200° in a vacuum to form the oxydihalides, PaOCl2 and PaOBr2, respectively. A pink residue which forms on sublimation of protactinium tetraiodide has been identified, by X-ray powder diffraction analysis, as the oxydi-iodide, PaOl2. Some chemical properties, visible spectra, and X-ray powder diffraction results are reported for these compounds and for protactinium tetrafluoride, PaF4.

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Article type: Paper
DOI: 10.1039/J19670000719
J. Chem. Soc. A, 1967, 719-723

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    The protactinium(IV) halides

    D. Brown and P. J. Jones, J. Chem. Soc. A, 1967, 719
    DOI: 10.1039/J19670000719

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