RbP4N7 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 9-coordinate geometry to one N(1), four equivalent N(2), and four equivalent N(3) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded to one N(1), one N(2), one N(3), and one N(4) atom to form corner-sharing PN4 tetrahedra. In the second P site, P(2) is bonded to one N(2), one N(3), and two equivalent N(4) atoms to form corner-sharing PN4 tetrahedra. There are four inequivalent N sites. In the first N site, N(3) is bonded in a 2-coordinate geometry to two equivalent Rb(1), one P(1), and one P(2) atom. In the second N site, N(4) is bonded in a trigonal planar geometry to one P(1) and two equivalent P(2) atoms. In the third N site, N(1) is bonded in a distorted bent 150 degrees geometry to one Rb(1) and two equivalent P(1) atoms. In the fourth N site, N(2) is bonded in a distorted bent 120 degrees geometry to two equivalent Rb(1), one P(1), and one P(2) atom.
RbP4N7 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 9-coordinate geometry to one N(1), four equivalent N(2), and four equivalent N(3) atoms. The Rb(1)-N(1) bond length is 3.01 Å. There are two shorter (3.04 Å) and two longer (3.18 Å) Rb(1)-N(2) bond lengths. There are two shorter (2.94 Å) and two longer (3.27 Å) Rb(1)-N(3) bond lengths. There are two inequivalent P sites. In the first P site, P(1) is bonded to one N(1), one N(2), one N(3), and one N(4) atom to form corner-sharing PN4 tetrahedra. The P(1)-N(1) bond length is 1.58 Å. The P(1)-N(2) bond length is 1.59 Å. The P(1)-N(3) bond length is 1.59 Å. The P(1)-N(4) bond length is 1.73 Å. In the second P site, P(2) is bonded to one N(2), one N(3), and two equivalent N(4) atoms to form corner-sharing PN4 tetrahedra. The P(2)-N(2) bond length is 1.57 Å. The P(2)-N(3) bond length is 1.57 Å. There is one shorter (1.70 Å) and one longer (1.72 Å) P(2)-N(4) bond length. There are four inequivalent N sites. In the first N site, N(3) is bonded in a 2-coordinate geometry to two equivalent Rb(1), one P(1), and one P(2) atom. In the second N site, N(4) is bonded in a trigonal planar geometry to one P(1) and two equivalent P(2) atoms. In the third N site, N(1) is bonded in a distorted bent 150 degrees geometry to one Rb(1) and two equivalent P(1) atoms. In the fourth N site, N(2) is bonded in a distorted bent 120 degrees geometry to two equivalent Rb(1), one P(1), and one P(2) atom.