The material described by Rb4N2O7 crystallizes in the triclinic P1 space group. There are four inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 5-coordinate geometry to one N(1), one O(2), one O(3), and two equivalent O(1) atoms. In the second Rb site, Rb(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form a mixture of distorted corner and edge-sharing RbO6 octahedra. The corner-sharing octahedral tilt angles are 70°. In the third Rb site, Rb(3) is bonded in a 6-coordinate geometry to two equivalent O(4), two equivalent O(5), and two equivalent O(7) atoms. In the fourth Rb site, Rb(4) is bonded in a 7-coordinate geometry to one O(4), one O(7), two equivalent O(1), and three equivalent O(6) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one O(2), and one O(3) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one O(4), one O(6), and one O(7) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Rb(1) and two equivalent Rb(4) atoms to form ORb4 tetrahedra that share corners with two equivalent O(2)Rb3N tetrahedra, corners with two equivalent O(3)Rb3N tetrahedra, and corners with four equivalent O(1)Rb4 tetrahedra. In the second O site, O(2) is bonded to one Rb(1), two equivalent Rb(2), and one N(1) atom to form distorted ORb3N tetrahedra that share corners with two equivalent O(2)Rb3N tetrahedra, corners with two equivalent O(3)Rb3N tetrahedra, corners with two equivalent O(1)Rb4 tetrahedra, corners with two equivalent O(5)Rb4 trigonal pyramids, edges with two equivalent O(3)Rb3N tetrahedra, and  an edgeedge with one O(5)Rb4 trigonal pyramid. In the third O site, O(3) is bonded to one Rb(1), two equivalent Rb(2), and one N(1) atom to form distorted ORb3N tetrahedra that share corners with two equivalent O(2)Rb3N tetrahedra, corners with two equivalent O(3)Rb3N tetrahedra, corners with two equivalent O(1)Rb4 tetrahedra, corners with four equivalent O(5)Rb4 trigonal pyramids, and edges with two equivalent O(2)Rb3N tetrahedra. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Rb(4), two equivalent Rb(3), and one N(2) atom. In the fifth O site, O(5) is bonded to two equivalent Rb(2) and two equivalent Rb(3) atoms to form ORb4 trigonal pyramids that share corners with two equivalent O(2)Rb3N tetrahedra, corners with four equivalent O(3)Rb3N tetrahedra, corners with four equivalent O(5)Rb4 trigonal pyramids, and  an edgeedge with one O(2)Rb3N tetrahedra. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to three equivalent Rb(4) and one N(2) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Rb(4), two equivalent Rb(3), and one N(2) atom. is represented by the CIF card [CIF]
data_Rb4N2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.724
_cell_length_b   4.909
_cell_length_c   14.419
_cell_angle_alpha   97.147
_cell_angle_beta   95.094
_cell_angle_gamma   108.415
_symmetry_Int_Tables_number   1
_cell_volume   311.929
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Rb  Rb0  1  0.640  0.201  0.901  1.0
  Rb  Rb1  1  0.848  0.751  0.629  1.0
  Rb  Rb2  1  0.123  0.206  0.418  1.0
  Rb  Rb3  1  0.279  0.781  0.109  1.0
  N  N4  1  0.296  0.449  0.753  1.0
  N  N5  1  0.713  0.440  0.236  1.0
  O  O6  1  0.755  0.780  0.995  1.0
  O  O7  1  0.380  0.719  0.747  1.0
  O  O8  1  0.012  0.323  0.744  1.0
  O  O9  1  0.934  0.653  0.281  1.0
  O  O10  1  0.341  0.808  0.510  1.0
  O  O11  1  0.653  0.412  0.147  1.0
  O  O12  1  0.552  0.252  0.280  1.0
[/CIF]
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The material described by Rb4N2O7 crystallizes in the triclinic P1 space group. There are four inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 5-coordinate geometry to one N(1), one O(2), one O(3), and two equivalent O(1) atoms. In the second Rb site, Rb(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form a mixture of distorted corner and edge-sharing RbO6 octahedra. The corner-sharing octahedral tilt angles are 70°. In the third Rb site, Rb(3) is bonded in a 6-coordinate geometry to two equivalent O(4), two equivalent O(5), and two equivalent O(7) atoms. In the fourth Rb site, Rb(4) is bonded in a 7-coordinate geometry to one O(4), one O(7), two equivalent O(1), and three equivalent O(6) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one O(2), and one O(3) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one O(4), one O(6), and one O(7) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Rb(1) and two equivalent Rb(4) atoms to form ORb4 tetrahedra that share corners with two equivalent O(2)Rb3N tetrahedra, corners with two equivalent O(3)Rb3N tetrahedra, and corners with four equivalent O(1)Rb4 tetrahedra. In the second O site, O(2) is bonded to one Rb(1), two equivalent Rb(2), and one N(1) atom to form distorted ORb3N tetrahedra that share corners with two equivalent O(2)Rb3N tetrahedra, corners with two equivalent O(3)Rb3N tetrahedra, corners with two equivalent O(1)Rb4 tetrahedra, corners with two equivalent O(5)Rb4 trigonal pyramids, edges with two equivalent O(3)Rb3N tetrahedra, and  an edgeedge with one O(5)Rb4 trigonal pyramid. In the third O site, O(3) is bonded to one Rb(1), two equivalent Rb(2), and one N(1) atom to form distorted ORb3N tetrahedra that share corners with two equivalent O(2)Rb3N tetrahedra, corners with two equivalent O(3)Rb3N tetrahedra, corners with two equivalent O(1)Rb4 tetrahedra, corners with four equivalent O(5)Rb4 trigonal pyramids, and edges with two equivalent O(2)Rb3N tetrahedra. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Rb(4), two equivalent Rb(3), and one N(2) atom. In the fifth O site, O(5) is bonded to two equivalent Rb(2) and two equivalent Rb(3) atoms to form ORb4 trigonal pyramids that share corners with two equivalent O(2)Rb3N tetrahedra, corners with four equivalent O(3)Rb3N tetrahedra, corners with four equivalent O(5)Rb4 trigonal pyramids, and  an edgeedge with one O(2)Rb3N tetrahedra. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to three equivalent Rb(4) and one N(2) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Rb(4), two equivalent Rb(3), and one N(2) atom. is represented by the CIF card [CIF]
data_Rb4N2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.724
_cell_length_b   4.909
_cell_length_c   14.419
_cell_angle_alpha   97.147
_cell_angle_beta   95.094
_cell_angle_gamma   108.415
_symmetry_Int_Tables_number   1
_cell_volume   311.929
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Rb  Rb0  1  0.640  0.201  0.901  1.0
  Rb  Rb1  1  0.848  0.751  0.629  1.0
  Rb  Rb2  1  0.123  0.206  0.418  1.0
  Rb  Rb3  1  0.279  0.781  0.109  1.0
  N  N4  1  0.296  0.449  0.753  1.0
  N  N5  1  0.713  0.440  0.236  1.0
  O  O6  1  0.755  0.780  0.995  1.0
  O  O7  1  0.380  0.719  0.747  1.0
  O  O8  1  0.012  0.323  0.744  1.0
  O  O9  1  0.934  0.653  0.281  1.0
  O  O10  1  0.341  0.808  0.510  1.0
  O  O11  1  0.653  0.412  0.147  1.0
  O  O12  1  0.552  0.252  0.280  1.0
[/CIF]
.