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Solid thorium carbonate compounds

The following thorium carbonate solid phases have been synthesised in corresponding bicarbonate or carbonate solutions and characterised by chemical analysis, thermogravimetry and X-ray diffraction  [Pg.345]

Thermodynamic data are not reported for these solids. However, the solubility data determined with Na6[Th(C03)5]12H20(s) [1961LUZ/KOV2], [1973DER/FAU3] [Pg.345]

The equilibrium constants selected in this review for solid and aqueous thorium carbonate compounds and the corresponding molar standard Gibbs energies of formation are summarised in Table XI-6. [Pg.371]

XLl Carbon compounds and complexes XI.1.1 Solid thorium carbides... [Pg.335]

Actinide(IV) carbonato solids of general formula M,.An(C03)y-nH20 have been prepared for a variety of metal cations (M = Na+, K+, NH4+, C(NH2)3, y = 4,5,6,8). The only well-characterized actinide(IV) hexacarbonato compound is the mineral tuliokite NagBaTh (C03)g-6H20. The three dimensional structure consists of alternating chains of barium and thorium icosahedra which share common polyhedral faces. The sodium atoms are found interspersed between the barium and thorium columns. The thorium chains contain discrete Th(C03)g icosahedra, which have three mutually perpendicular planes formed by the trans carbonate ligands, giving virtual T/j symmetry. [Pg.215]

See other pages where Solid thorium carbonate compounds is mentioned: [Pg.345]    [Pg.345]    [Pg.55]    [Pg.230]    [Pg.891]    [Pg.148]    [Pg.196]    [Pg.346]    [Pg.348]    [Pg.724]    [Pg.1101]    [Pg.1103]    [Pg.1120]    [Pg.345]    [Pg.345]    [Pg.671]    [Pg.259]   


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Solid carbon

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