Rb2Ba6Sb5HO crystallizes in the tetragonal I4/mcm space group. Rb(1) is bonded in a 8-coordinate geometry to six equivalent Sb(1) atoms. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a single-bond geometry to two equivalent Sb(2), three equivalent Sb(1), and one O(1) atom. In the second Ba site, Ba(2) is bonded to four equivalent Sb(1) and one H(1) atom to form distorted corner-sharing BaSb4H square pyramids. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 9-coordinate geometry to three equivalent Rb(1), two equivalent Ba(2), three equivalent Ba(1), and one Sb(1) atom. In the second Sb site, Sb(2) is bonded in a 8-coordinate geometry to eight equivalent Ba(1) atoms. H(1) is bonded in a linear geometry to two equivalent Ba(2) atoms. O(1) is bonded in a tetrahedral geometry to four equivalent Ba(1) atoms.
Rb2Ba6Sb5HO crystallizes in the tetragonal I4/mcm space group. Rb(1) is bonded in a 8-coordinate geometry to six equivalent Sb(1) atoms. There are four shorter (3.89 Å) and two longer (4.00 Å) Rb(1)-Sb(1) bond lengths. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a single-bond geometry to two equivalent Sb(2), three equivalent Sb(1), and one O(1) atom. Both Ba(1)-Sb(2) bond lengths are 3.71 Å. There are two shorter (3.58 Å) and one longer (3.85 Å) Ba(1)-Sb(1) bond length. The Ba(1)-O(1) bond length is 2.56 Å. In the second Ba site, Ba(2) is bonded to four equivalent Sb(1) and one H(1) atom to form distorted corner-sharing BaSb4H square pyramids. All Ba(2)-Sb(1) bond lengths are 3.58 Å. The Ba(2)-H(1) bond length is 2.64 Å. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 9-coordinate geometry to three equivalent Rb(1), two equivalent Ba(2), three equivalent Ba(1), and one Sb(1) atom. The Sb(1)-Sb(1) bond length is 2.91 Å. In the second Sb site, Sb(2) is bonded in a 8-coordinate geometry to eight equivalent Ba(1) atoms. H(1) is bonded in a linear geometry to two equivalent Ba(2) atoms. O(1) is bonded in a tetrahedral geometry to four equivalent Ba(1) atoms.