RbSb is Magnesium tetraboride-like structured and crystallizes in the orthorhombic P2_12_12_1 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 5-coordinate geometry to two equivalent Sb(2) and three equivalent Sb(1) atoms. In the second Rb site, Rb(2) is bonded in a 6-coordinate geometry to three equivalent Sb(1) and three equivalent Sb(2) atoms. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 8-coordinate geometry to three equivalent Rb(1), three equivalent Rb(2), and two equivalent Sb(2) atoms. In the second Sb site, Sb(2) is bonded in a 7-coordinate geometry to two equivalent Rb(1), three equivalent Rb(2), and two equivalent Sb(1) atoms.
RbSb is Magnesium tetraboride-like structured and crystallizes in the orthorhombic P2_12_12_1 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 5-coordinate geometry to two equivalent Sb(2) and three equivalent Sb(1) atoms. There is one shorter (3.82 Å) and one longer (3.84 Å) Rb(1)-Sb(2) bond length. There are two shorter (3.68 Å) and one longer (3.69 Å) Rb(1)-Sb(1) bond length. In the second Rb site, Rb(2) is bonded in a 6-coordinate geometry to three equivalent Sb(1) and three equivalent Sb(2) atoms. There are a spread of Rb(2)-Sb(1) bond distances ranging from 3.69-3.88 Å. There are a spread of Rb(2)-Sb(2) bond distances ranging from 3.70-3.95 Å. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 8-coordinate geometry to three equivalent Rb(1), three equivalent Rb(2), and two equivalent Sb(2) atoms. There is one shorter (2.87 Å) and one longer (2.89 Å) Sb(1)-Sb(2) bond length. In the second Sb site, Sb(2) is bonded in a 7-coordinate geometry to two equivalent Rb(1), three equivalent Rb(2), and two equivalent Sb(1) atoms.