Praseodymium bromide

Cerous bromide [14457-87-5] CeBr, and praseodymium bromide [13536-53-3] PrBr, are claimed to be suitable for a molten salt bath used for the reduction of uranium oxide by magnesium (16). PrBr is claimed to be alight filter in a cathode ray tube (17). 

Prandtl mixing length hypothesis, 11 779 Prandtl number, JJ 746, 809 13 246-247 Praseodymium (Pr), J4 631t, 634t electronic configuration, J 474t Praseodymium bromide, physical properties of, 4 329 Prater equation, 25 270, 299 Prater number, 25 299, 300-301, 303 effect on maximum dimensionless intrapellet temperature, 25 304, 309 effect on maximum intrapellet temperature, 25 306 Prato reaction, 12 244 Pratsinis aluminum nitride, 17 212 Pravachol, 5 143... 

PrBr3 PRASEODYMIUM BROMIDE 1319 RbBr RUBIDIUM BROMIDE 1362... 

PrBr3[g] PRASEODYMIUM BROMIDE (GAS) 1320 RbBrIg] RUBIDIUM BROMIDE (GAS) 1363... 

It is supposed that (Me3SiCH2)3SnBr is also formed in this case but it instantly reacts with the Sn-Pr group to give distannane and praseodymium bromide. 

In most of these systems there is clear evidence for the formation of the reduced ion For example, in NdX2 salts this is on the basis of magnetic studies (3J), and with the praseodymium chloride and bromide phases, from qualitative resistivity measurements and their structural relationships to the neodymium chlorides according to x-ray data. Cryo-scopic data for all the systems listed are also consistent with the formation of a as opposed to solute in dilute solution in MX3 (3, 7). 

Mercury(I) bromide Mercury(I) carbonate Mercury(I) chloride Mercury(I) fluoride Mercury(I) iodide Mercury(I) oxalate Mercury(I) sulfate Mercury(I) thiocyanate Mercury(II) bromide Mercury(II) iodide Neodymium carbonate Nickel(II) carbonate Nickel(II) hydroxide Nickel(II) iodate Nickel(II) phosphate Palladium(II) thiocyanate Potassium hexachloroplatinate Potassium perchlorate Potassium periodate Praseodymium hydroxide... 

The problem of the nature of the electronic multipole ordering is especially interesting for some praseodymium hexagonrd compounds with the doublet ground state E of the Pr + ion in the crystal field of Csh symmetry (chlorides, bromides, hydroxides, trifluoromethane sulfonates, ethylsulfates). In the effective S=j formalism, neglecting hyperfine interactions, the single-ion Hamiltonian can be written as follows ... 

The synthesis of lanthanide and actinide compounds is the topic of a book edited by Meyer and Morss (1991). Topics that relate to halides, with the author(s) in brackets, include Lanthanide fluorides [B.G. Muller], Actinide fluorides [N.P. Freestone], Binary lanthanide(III) halides, RX3, X = Cl, Br, and I [G. Meyer], Complex lan-thanide(III) chlorides, bromides and iodides [G. Meyer], Conproportionation routes to reduced lanthanide halides [J.D. Corbett], and Action of alkali metals on lanthanide(III) halides an alternative to the conproportionation route to reduced lanthanide halides [G. Meyer and T. Schleid]. Meyer and Meyer (1992) reviewed lanthanide halides in which the valence of the lanthanide was considered unusual, with unusual being defined as compounds in which the localized valence of an atom differs from its oxidation number. A metallic halide such as Lalj [oxidation number (0)= -1-2 valence (V)= -l-3, since the 5d electron is delocalized in the conduction band] or a semiconducting halide such as PrjBtj (O = -t- 2.5 V = -I- 3) is unusual by this definition, but Tmlj (O = -1-2 V = +2) is not. In this review synthesis, properties, and calculated electronic structures are considered with emphasis on praseodymium halides and hydrogen intercalation into lanthanide dihalides and monohalides . 

Corbett also discovered a number of other binary reduced lanthanide chlorides, bromides, and iodides through phase diagram determinations and through further exploratory research. For example, there is the scandium-deficient scandium diiodide, with a composition around SC0.89I2, and the praseodymium excess PrCb.si = Pro.29PrCl3, with... 

The reactions of these complexes with hydrogen chloride proceed easily at room temperature and depending on stoichiometry can lead to partial or complete splitting of the polynuclear anions. The germanium bromide (QF5)3GeBr interacts with praseodymium mercurate to give the complex with [PrBr] cation ... 

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