EuPdGe - a New Germanide with EuNiGe Type Structure

Abstract

The title compound was prepared from the elemental components in a tantalum tube at 1070 K and investigated by X-ray diffraction of both powder as well as single crystals. The crystal structure was refined from four-circle diffractometer data: P21/n, a = 618.1(1), b = 613.6(1), c = 743.9(1) pm, β = 109.40(1)°, V = 0.2661(1) nm3, Z = 4, wR2 = 0.0536 for 1564 F2 values and 29 variables. EuPdGe crystallizes with the EuNiGe type structure. Both Pd and Ge atoms in EuPdGe have three germanium or palladium neighbors, respectively. They form two-dimensionally infinite [PdGe] polyanions which consist of corrugated 4.82 nets. These polyanions are separated by the europium atoms.