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Tantalum pentabromide

Tantalum Pentiodide, Tal5, has been obtained by distilling tantalum pentabromide in a stream of dry hydrogen iodide and purifying the product by redistilling it in an atmosphere of carbon dioxide. It is an almost black substance which melts to a brown liquid, and is decomposed by water similarly to the pentabromide, but not so vigorously. [Pg.196]

TaBrS TANTALUM PENTABROMIDE 1592 Te02 TELLURIUM DIOXIDE 1636... [Pg.1918]

TaBr5[g] TANTALUM PENTABROMIDE (GAS) 1592 Te02[g] TELLURIUM DIOXIDE (GAS) 1637... [Pg.1918]

Hydrates of Tantalum Pentoxide, Colloidal Tantalum Pentoxide, Tantalic Acid.—When tantalum pentachloride or pentabromide is treated with water, or when a solution of a tantalate is boiled with dilute acids, a gelatinous predpitate of more or less hydrated tantalum pentoxide is thrown down. Insoluble tantalates on fusion with potassium hydrogen sulphate and extraction of the melt with water give the gel. In dealing with double fluorides of tantalum it is necessary to remove all the hydrofluoric add by evaporation with concentrated sulphuric acid, otherwise double fluorides are obtained. [Pg.198]

Protactinium pentachloride (42) and pentabromide (43) form both 1 1 and 1 2 complexes with phosphine oxides, the former being analogous to those formed by niobium, tantalum, and uranium pentahalides (26, 42, 43). Unlike niobium and tantalum pentachloride (42, 64) however, they do not react with excess triphenylphosphine oxide (TPPO) to form... [Pg.31]

Even fewer complexes with nitrogen donor ligands have been reported and all are methyl cyanide adducts (Tables X and XI). Protactinium pentabromide forms a soluble 1 3 complex in contrast to the 1 1 complexes formed by niobium and tantalum pentahalides (46). Other actinide pentahalide-methyl cyanide complexes are still unknown. Protactinium tetrachloride, tetrabromide, and tetraiodide react with anhydrous, oxygen-free methyl cyanide to form slightly soluble 1 4 complexes (44, 48) which are isostructural with their actinide tetrahalide analogs. [Pg.35]

See other pages where Tantalum pentabromide is mentioned: [Pg.528]    [Pg.687]    [Pg.797]    [Pg.956]    [Pg.195]    [Pg.195]    [Pg.195]    [Pg.647]    [Pg.130]    [Pg.1592]    [Pg.1592]    [Pg.117]    [Pg.528]    [Pg.687]    [Pg.797]    [Pg.956]    [Pg.195]    [Pg.195]    [Pg.195]    [Pg.647]    [Pg.130]    [Pg.1592]    [Pg.1592]    [Pg.117]    [Pg.783]    [Pg.181]    [Pg.1595]    [Pg.69]    [Pg.2442]    [Pg.24]    [Pg.151]    [Pg.229]   
See also in sourсe #XX -- [ Pg.181 , Pg.195 ]



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