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'Mixed Valency Phases' in keywords
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1990 (1)
1Author    Sabine Paashaus, R. Üdiger, K. NiepRequires cookie*
 Abstract    The pseudobinary systems E T e-E T eH a l (E/H al = A l/I,Br; G a/I.B r,C l; In/I,Br) contain the intermediate phases E3Te3Hal, having incongruent melting behavior (decom position at temperatures between 386 °C and 718 °C). The crystal structures (orthorhombic, Pnma) o f the isotypic ternary phases contain one-dim ensional macrom olecules, in which (Te3 3EInHal)-tetrahedra and (Te3 3G a2nTe3/3) units (staggered conform ation) are linked by com m on T e -T e -edges. The macromolecules can be described in terms o f fragments o f an ETe-crystal structure o f the GaTe structural type. In this way, halogen acts as an oxidizing agent which then satu­ rates the free valence at the Em positions. Larger fragments o f a respective ETe-crystal struc­ ture are expected to be present in the crystal structure o f InTeC lv (x ~ 0.16) which is an inter­ mediate phase (m.p. = 418 °C; incongruent) in the quasibinary system In T e-In T eC l. 
  Reference    Z. Naturforsch. 45b, 667—6 (1990); eingegangen am 6. N ovem ber 1989 
  Published    1990 
  Keywords    Phase Relations, Crystal Structure, Mixed Valency Phases 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0667.pdf 
 Identifier    ZNB-1990-45b-0667 
 Volume    45