Materials Data on RbFe2Te3 by Materials Project
RbFe2Te3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Rb1+ is bonded in a 10-coordinate geometry to eight Te2- atoms. There are a spread of Rb–Te bond distances ranging from 3.76–4.03 Å. Fe+2.50+ is bonded to four Te2- atoms to form a mixture of distorted corner and edge-sharing FeTe4 tetrahedra. There are two shorter (2.56 Å) and two longer (2.61 Å) Fe–Te bond lengths. There are two inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 6-coordinate geometry to two equivalent Rb1+ and four equivalent Fe+2.50+ atoms. In the second Te2- site, Te2- is bonded in a 5-coordinate geometry to three equivalent Rb1+ and two equivalent Fe+2.50+ atoms.
36 MATERIALS SCIENCE↗