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Synthesis, spectroscopic and magnetic properties of tetramethylammonium hexachlorouranate(III).
Autorzy
Rok wydania
1996
Czasopismo
European journal of solid state and inorganic chemistry
Numer woluminu
33
Strony
1071-1078
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The synthesis of tetramethylammonium hexachlorouranate(III) together w ith some of its structural and spectroscopic and magnetic properties i s reported. The compound crystallizes in the tetragonal system with a= 13.020 Angstrom, c=7.825 Angstrom, Z=2 and V=1376.48 Angstrom(3). The electronic absorption, Raman and infrared spectra hale been recorded a nd are discussed. Magnetic susceptibilities of polycrystalline samples were measured by the Faraday method in the 6.2-300 K range. [(CH3)(4) N]3UCl6 follows the Curie-Weiss law in the 200-300 K range with C=1.50 58 emu . K . mol(-1), Theta=17 K and mu(eff)= 3.36 B.M. At lower tempe ratures the plot shows an antiferromagnetic transition at 4.8 K.
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