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'Lanthanoid Rhenium Carbides' in keywords
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1994 (1)
1Author    Rainer Pöttgen, G. Ünter Block, Wolfgang Jeitschko, RonaldK. BehrensRequires cookie*
 Title    Preparation and Crystal Structure of the Carbides Ln12Re5C15 (Ln = Y, L a-N d, G d-E r)  
 Abstract    The title compounds were prepared by arc-melting of the elem ental components and sub­ sequent annealing. Their crystal structure is hexagonal P 6 2 m with one formula unit per cell. It was determined from single-crystal X-ray data o f La12R e5C i5 (a = 1116.8(1) pm. c = 545.3(1) pm. R = 0.060 for 287 structure factors and 27 variable parameters) and H o 12R e5C i5 (a = 1066.7(1) pm, c -504.2(1) pm, R = 0.018 for 392 F's and 31 variables). The structures correspond to the formula Ln12[ReC 3]2[R e3C3(C2)3], where the brackets indicate two differ­ ent trigonal planar anionic rhenium-carbon groups. The coordination of the rhenium atoms in these polyanions seem s to be compatible with the 18-electron rule. 
  Reference    Z. Naturforsch. 49b, 1081—1088 (1994); received February 22 1994 
  Published    1994 
  Keywords    Crystal Structure, Lanthanoid-Rhenium-Carbides, 18-Electron Rule 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-1081.pdf 
 Identifier    ZNB-1994-49b-1081 
 Volume    49