The new compounds EuPdIn 2 (1), YbPdIn 2 (2), and YbAuIn 2 structure calculation on 1 reveals a non-vanishing densityof-states (DOS) at the Fermi level. The strongest bonding (3) have been synthesized by high-frequency melting of the elements in sealed tantalum tubes and subsequent annealing interactions are found for the In-In and Pd-In contacts; the Eu-Pd and Eu-In interactions are much weaker. Magnetic at about 900 K. Their crystal structures have been determined by single-crystal X-ray diffraction techniques. investigations indicate divalent character of the ytterbium atoms in 2, showing negative susceptibilities below room Compounds 1, 2, and 3 crystallize with the MgCuAl 2 -type structure (space group Cmcm), a ternary ordered version of temperature. Compound 1 exhibits Curie-Weiss behavior above 50 K with an experimental magnetic moment of 7.8(1) the Re 3 B type. Structural elements in these compounds are transition metal centered trigonal prisms made up of the rare µ B , thus indicating divalent europium. Ferromagnetic
ordering was observed at T C = 14.5(5) K, with a saturation earth and indium atoms. The transition metal (T) and indium atoms form a three-dimensionally infinite [TIn 2 ] polyanionic moment of 6.8(1) µ B /Eu at 5.5 T and 4 K, as determined from magnetization measurements. Compounds 1 and 2 are found network in which the large rare earth metal atoms occupy one-dimensional pentagonal tubes. A semiempirical band to be metallic conductors.
in a novel, water-cooled sample chamber in a high-fre- [a] Anorganisch-