Rb3P is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded to four equivalent Rb(2) and four equivalent P(1) atoms to form a mixture of distorted edge, face, and corner-sharing RbRb4P4 tetrahedra. In the second Rb site, Rb(2) is bonded in a body-centered cubic geometry to eight equivalent Rb(1) atoms. P(1) is bonded in a body-centered cubic geometry to eight equivalent Rb(1) atoms.
Rb3P is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded to four equivalent Rb(2) and four equivalent P(1) atoms to form a mixture of distorted edge, face, and corner-sharing RbRb4P4 tetrahedra. All Rb(1)-Rb(2) bond lengths are 3.66 Å. All Rb(1)-P(1) bond lengths are 3.66 Å. In the second Rb site, Rb(2) is bonded in a body-centered cubic geometry to eight equivalent Rb(1) atoms. P(1) is bonded in a body-centered cubic geometry to eight equivalent Rb(1) atoms.