Materials Data on Rb2MnCl4 by Materials Project
Rb2MnCl4 is (La,Ba)CuO4 structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Rb1+ is bonded in a 9-coordinate geometry to nine Cl1- atoms. There are a spread of Rb–Cl bond distances ranging from 3.30–3.62 Å. Mn2+ is bonded to six Cl1- atoms to form corner-sharing MnCl6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.53 Å) and four longer (2.56 Å) Mn–Cl bond lengths. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded to four equivalent Rb1+ and two equivalent Mn2+ atoms to form a mixture of distorted corner, edge, and face-sharing ClRb4Mn2 octahedra. The corner-sharing octahedra tilt angles range from 0–56°. In the second Cl1- site, Cl1- is bonded to five equivalent Rb1+ and one Mn2+ atom to form distorted ClRb5Mn octahedra that share corners with seventeen ClRb4Mn2 octahedra, edges with eight equivalent ClRb5Mn octahedra, and faces with four equivalent ClRb4Mn2 octahedra. The corner-sharing octahedra tilt angles range from 0–56°.