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2001 (1)
1Author    H. Oppermann, H. Dao Quoc, M. Zhang-PreßeRequires cookie*
 Title    Thermical and Calorical Behaviour of Solid LaAl3Br12 and Chemical Transport of LaBr3 with AlBr3  
 Abstract    The thermodynamical data of solid Lanthanum Aluminium Bromide LaAl3 Br12 have been obtained by determination of the decomposition equilibria from total pressure measurements. For different compositions LaBr3 /AlBr3, the barogram of the binary system LaBr3 -AlBr3 was constructed and from this and DTA the melting diagram was determined. The chemical trans­ port of LaBr3 with AlBr3 is suggesting the existence of two gaseous complexes LaAl3 B r12 and LaAl?Br9. The data are: Z\H°B(LaAl3B rl2,f,298) = -587,2 ± 7 kcal/mol, S°(LaAl3Br12,f,298) = 179,3 ± 7 cal/Kmol; zAH°B(LaAl3B r12,g,298) = -548,7 ± 5 kcal/mol, S°(LaAl,Br12,g,298) = 239,4 ± 6 cal/K mol; Z\H°B(LaAl2Br9,g,298) = -619,7 ± 5,5 kcal/mol, S°(LaAl2Br9,g,298) = 212,0 ± 7 cal/K mol. From solution calorimetric measurements follows the enthalpy of formation of the solid com­ plexes: zAH°B(LaAl3Br12,f,298) = -590,9 ± 3 kcal/mol. Thermisches und kalorisches Verhalten von festem LaAl3Br12 
  Reference    Z. Naturforsch. 56b, 908—916 (2001); eingegangen am 10. Mai 2001 
  Published    2001 
  Keywords    Lanthanum Alumimium Bromide, Calorimetry, Enthalpy 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-0908.pdf 
 Identifier    ZNB-2001-56b-0908 
 Volume    56