By H.J. Emeléus (ed.), A.G. Sharpe (ed.)
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Additional info for Advances in Inorganic Chemistry and Radiochemistry, Vol. 12
The acetylacetonate Pa(acac),Cl, has been prepared by direct reaction between protactinium pentachloride and acetylacetone in methylene dichloride. 9" (Brown and Rickard). The structure of this compound is currently being determined. ) have indicated that the product contains a variable amount of iodate (Pa:IO, between 1 : 0 . 0) and more than twelve molecules of water. The infrared vibration associated with the iodate was observed as a broad band between 600 and 870 cm-'. The white solid slowly decomposes with the liberation of iodine.
704 (19) (19) (125) (125) - Although it is known that protactinium(V) precipitates from dilute sulfuric acid on the addition of potassium sulfate, the product, believed to be K3PaO(S04)3,has not been satisfactorily characterized (19, 28, 105). There is obviously scope for further research on the preparation of sulfato (and selenato) complexes of pentavalent protactinium. I n addition, tetravalent protactinium sulfates, selenates, and their complexes have not been studied. IX. Miscellaneous Compounds The remaining compounds of protactinium are more conveniently dealt with together since they belong to several different classes.
Chern. SOC. p. 2531 (1964). 23. Bagnall, K. , t o be published. 24. Bagnall, K. , 2. Nuturforsch,. 24b, 214 (1969). 25. Bagnall, K. , and du Preez, J. G. , J . Chern. p . 2603 (1964). 26. Bagnall, K. , and du Preez, J. G. , J . Chern. p. 5217 (1965). 27. Bagnall, K. , Deane, A. , Robinson, P. , and Stewart, M. A. A . , J . Chern. p. 1611 (1961). 28. , Bull. Chirn. France p . 557 (1951). 29. , Bull. SOC. C h i m . Prance p. 918 (1951). 30. , in “The Halides of the Actinides and Lanthanides,” Chapter 2.
Advances in Inorganic Chemistry and Radiochemistry, Vol. 12 by H.J. Emeléus (ed.), A.G. Sharpe (ed.)