Uranyl orthophosphates

Uranyl chloride, 5 148 Uranyl orthophosphate 4-hydrate, U02HP04-4H20, 5 150 analysis of, 5 151 Urazine (4-aminourazole), 4 29 from carbohydrazide, 4 30 from carb ohydrazide-V-carb ox-amide, 4 31 salts of, 4 31 Urazole, 5 52... 

Vesei.y, V., V, Pekarkk, and M. Abbrent. 1965. A study of uranyl phosphates-IIl. Solubility products of uranyl hydrogen phosphate. Uranyl orthophosphate and some alkali uranyl phosphates. J. Inorg. Nucl. Chem. 27 1159-66. 

P04U02H-4H20 Uranyl orthophosphate 4-hydrate, 6 151 (P04)2CaH4-H20 Calcium dihydrogen orthophosphate 1-hydrate, 4 18... 

UC15 Uranium(V) chloride, 6 144 U02 Uranium (IV) oxide, 6 149 U02C12 Uranyl chloride, 6 148 U02(C9H6N0)2 Bis(8-quinolinolo)-dioxouranium(VI), 4 101 compound with 8-quinolinol, 4 101 U02HP04-4H20 Uranyl orthophosphate 4-hydrate, 6 150 U308 Uranium (IV) (VI) oxide, 6 ... 

U02HP04-4H20 Uranyl orthophosphate 4-hydrate, 6 150 UjOg Uranium (IV) (VI) oxide, 6 149... 

Uranium, determination of, in uranyl hydrogen orthophosphate 4-hydrate, 5 151... 

Following the structural hierarchy developed for uranyl compounds [11, 12], the orthophosphates and orthoarsenates of the hexavalent actinides may be divided into three general classes based on the polymerization of polyhedra of higher bond-valence chain, sheet, and framework structures. Among the sheet and framework stmctures, there is some overlap as the phosphuranylite-type sheet is exhibited mainly by sheet stmctures but also by frameworks, and is discussed in the section on sheet stmctures. Similarly, the uranophane sheet-anion topology is adopted by some sheets but mainly by frameworks and is discussed in the latter section. 

As in the actinyl orthophosphates, hexavalent uranium occurs as the uranyl ion in square bipyramids and pentagonal bipyramids in the uranyl polyphosphates listed in Table 19. In these compounds, tetrahedra are polymerized with each... 

The preparation of uranyl hydrogen orthophosphate 4-hydrate has been described,1 2 but a detailed procedure giving a pure product has not been recorded. The directions given here represent a modification of those mentioned in the earlier reports.3... 

Uranyl hydrogen orthophosphate 4-hydrate is a bright yellow compound, the crystals of which appear as tabular four-sided plates or truncated squares6 and belong to the tetragonal system.7 The calculated density is 3.417 and the observed density 3.399.6 The compound dissolves readily in dilute acids. At 110° it is converted to the 2-hydrate. 

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