• Oeckler, Oliver
• Götze, André
• Kohlmann, Holger
• Urban, Philipp

Abstract

<jats:p>Pd<jats:sub>5</jats:sub>InSe has been prepared from the elements. The use of iodine as a mineralizing agent enables the synthesis of single-phase powder samples as well as of single crystals. Pd<jats:sub>5</jats:sub>InSe is stable in cold air, but reacts to give Pd, In<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub> and Pd<jats:sub>4</jats:sub>Se at 400 °C. The crystal structure of Pd<jats:sub>5</jats:sub>InSe was determined from single-crystal X-ray diffraction data (space group P4=mmm, a = 4.0255(7), c = 6.972(1) Å, z(Pd2) = 0.28111(8)) and belongs to the Pd<jats:sub>5</jats:sub>TlAs-type structure with full occupation of all atomic sites. EDX analysis on the single crystal (Pd<jats:sub>5.0</jats:sub>(1)In<jats:sub>0.99</jats:sub>(3)Se<jats:sub>1.0</jats:sub>(1)) confirms the stoichiometric composition. The relationship to the cubic close packing (Cu-type structure), which may be visualized by the crystal chemical formula Pd<jats:sub>4</jats:sub>PdTlAs⃞, is proven by a Bärnighausen symmetry tree. </jats:p>

Topics

• impedance spectroscopy
• single crystal
• phase
• x-ray diffraction
• Energy-dispersive X-ray spectroscopy
• space group