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'Mixed Valence' in keywords Facet   Publication Year 2001  [X]
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2001[X]
1Author    Florian Stadler, Thomas Fickenscher, Rainer PöttgenRequires cookie*
 Title    Synthesis and Structure of RE2Rh2Cd (RE = La, Ce, Pr, Nd, Sm)  
 Abstract    New intermetallic cadmium compounds /?£2Rh2Cd (r e = La, Ce, Pr, Nd, Sm) were syn­ thesized from the elements in sealed tantalum tubes in a high-frequency furnace. They were characterized through X-ray powder data: Mo2FeB2 type, space group P4/mbm, Z = 2. Single crystal data of the cerium compound (a = 762.8(1), c = 377.8(1) pm, wR2 = 0.0662, 199 F2 values, and 13 variable parameters) revealed small defects on the rhodium position leading to the composition Ce2R h186(3)Cd for the investi­ gated crystal. According to the course of the cell volumes Ce2Rh2Cd may be classified as a mixed-valent compound. The Ce2Rh2Cd structure is an intergrowth of slightly distorted A1B2 and CsCl related slabs of compositions CeRh2 and CeCd. Within the CeRh2 slab short Ce-Rh contacts (284-300 pm) are indicative of strong Ce-Rh bonding. The Rh-Rh distance within the A1B2 re­ lated slab is 289 pm. 
  Reference    Z. Naturforsch. 56b, 1241—1244 (2001); received September 10 2001 
  Published    2001 
  Keywords    Cadmium, Solid State Synthesis, Mixed Valence 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-1241_n.pdf 
 Identifier    ZNB-2001-56b-1241_n 
 Volume    56