RbCaSb is Matlockite structured and crystallizes in the tetragonal P4/nmm space group. Rb(1) is bonded in a 5-coordinate geometry to five equivalent Sb(1) atoms. Ca(1) is bonded to four equivalent Sb(1) atoms to form a mixture of corner and edge-sharing CaSb4 tetrahedra. Sb(1) is bonded in a 9-coordinate geometry to five equivalent Rb(1) and four equivalent Ca(1) atoms.
RbCaSb is Matlockite structured and crystallizes in the tetragonal P4/nmm space group. Rb(1) is bonded in a 5-coordinate geometry to five equivalent Sb(1) atoms. There is one shorter (3.74 Å) and four longer (4.08 Å) Rb(1)-Sb(1) bond lengths. Ca(1) is bonded to four equivalent Sb(1) atoms to form a mixture of corner and edge-sharing CaSb4 tetrahedra. All Ca(1)-Sb(1) bond lengths are 3.17 Å. Sb(1) is bonded in a 9-coordinate geometry to five equivalent Rb(1) and four equivalent Ca(1) atoms.