Publisher： John Wiley & Sons Inc
ISSN： 0044-2313
Source： ZAAC-JOURNAL OF INORGANIC AND GENERAL CHEMISTRY (ELECTRONIC), Vol.641, Iss.3, 2015-03, pp. : 557-560
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Abstract
The new ternary intermetallic phase, BaPtCd2, was synthesized by solid‐state reaction from direct combination of the elements in a stoichiometric mixture. The reaction was done at 850 °C for 15 h, followed by an equilibration at 600 °C for 4 d. The crystal structure was determined by X‐ray diffraction method on a single crystal. BaPtCd2 is isotypic to MgCuAl2 and crystallizes in the orthorhombic space group Cmcm [a = 4.467(2), b = 11.143(4), c = 8.240(3) Å, V = 410.2(3) Å3, and Z = 4]. Barium atoms are linked together forming zigzag chains. Cadmium atoms are bonded to each other forming six‐membered rings of platinum centered boat and anti‐boat conformations. BaPtCd2 contains 16 electrons per formula unit and belongs to the electron poorest compounds with MgCuAl2 type structure. Calculations based on the linear muffin‐tin orbitals method in the atomic spheres approximation show that significant bonding states in BaPtCd2 are unoccupied.
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Crystal Structure and Chemical Bonding Analysis of BaPtCd2
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