The material described by Rb4Sn(SeO)4 crystallizes in the triclinic P-1 space group. There are four inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 3-coordinate geometry to one Se(4), one O(2), one O(3), and one O(4) atom. In the second Rb site, Rb(2) is bonded in a 3-coordinate geometry to one O(2), one O(3), and one O(4) atom. In the third Rb site, Rb(3) is bonded in a 7-coordinate geometry to one Se(2), two equivalent Se(4), one O(3), one O(4), and two equivalent O(1) atoms. In the fourth Rb site, Rb(4) is bonded in a 8-coordinate geometry to two equivalent Se(2), two equivalent Se(4), one O(1), one O(2), one O(3), and one O(4) atom. Sn(1) is bonded to one Se(1), one Se(2), one Se(3), and one Se(4) atom to form SnSe4 tetrahedra that share  a cornercorner with one O(2)Rb3Se trigonal pyramid. There are four inequivalent Se sites. In the first Se site, Se(1) is bonded in a 1-coordinate geometry to one Sn(1) and one O(1) atom. In the second Se site, Se(2) is bonded in a distorted single-bond geometry to one Rb(3), two equivalent Rb(4), one Sn(1), and one O(3) atom. In the third Se site, Se(3) is bonded in a distorted single-bond geometry to one Sn(1) and one O(2) atom. In the fourth Se site, Se(4) is bonded to one Rb(1), two equivalent Rb(3), two equivalent Rb(4), and one Sn(1) atom to form distorted SeRb5Sn pentagonal pyramids that share  a cornercorner with one O(2)Rb3Se trigonal pyramid, edges with two equivalent Se(4)Rb5Sn pentagonal pyramids, and  an edgeedge with one O(2)Rb3Se trigonal pyramid. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Rb(4), two equivalent Rb(3), one Se(1), and one O(4) atom. In the second O site, O(2) is bonded to one Rb(1), one Rb(2), one Rb(4), and one Se(3) atom to form distorted ORb3Se trigonal pyramids that share  a cornercorner with one Se(4)Rb5Sn pentagonal pyramid,  a cornercorner with one Sn(1)Se4 tetrahedra, and  an edgeedge with one Se(4)Rb5Sn pentagonal pyramid. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Rb(1), one Rb(2), one Rb(3), one Rb(4), and one Se(2) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Rb(1), one Rb(2), one Rb(3), one Rb(4), and one O(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb4Sn(SeO)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.676
_cell_length_b   9.028
_cell_length_c   11.411
_cell_angle_alpha   113.261
_cell_angle_beta   75.703
_cell_angle_gamma   106.908
_symmetry_Int_Tables_number   1
_cell_volume   776.731
_cell_formula_units_Z   2
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  0.484  0.811  0.262  1.0
  Rb  Rb1  1  0.516  0.189  0.738  1.0
  Rb  Rb2  1  0.102  0.861  0.531  1.0
  Rb  Rb3  1  0.898  0.139  0.469  1.0
  Rb  Rb4  1  0.819  0.614  0.002  1.0
  Rb  Rb5  1  0.181  0.386  0.998  1.0
  Rb  Rb6  1  0.800  0.039  0.859  1.0
  Rb  Rb7  1  0.200  0.961  0.141  1.0
  Sn  Sn8  1  0.644  0.329  0.256  1.0
  Sn  Sn9  1  0.356  0.671  0.744  1.0
  Se  Se10  1  0.799  0.637  0.341  1.0
  Se  Se11  1  0.201  0.363  0.659  1.0
  Se  Se12  1  0.893  0.179  0.188  1.0
  Se  Se13  1  0.107  0.821  0.812  1.0
  Se  Se14  1  0.453  0.249  0.459  1.0
  Se  Se15  1  0.547  0.751  0.541  1.0
  Se  Se16  1  0.505  0.291  0.074  1.0
  Se  Se17  1  0.495  0.709  0.926  1.0
  O  O18  1  0.995  0.611  0.196  1.0
  O  O19  1  0.005  0.389  0.804  1.0
  O  O20  1  0.691  0.931  0.612  1.0
  O  O21  1  0.309  0.069  0.388  1.0
  O  O22  1  0.822  0.977  0.200  1.0
  O  O23  1  0.178  0.023  0.800  1.0
  O  O24  1  0.142  0.709  0.248  1.0
  O  O25  1  0.858  0.291  0.752  1.0
[/CIF]
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The material described by Rb4Sn(SeO)4 crystallizes in the triclinic P-1 space group. There are four inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 3-coordinate geometry to one Se(4), one O(2), one O(3), and one O(4) atom. In the second Rb site, Rb(2) is bonded in a 3-coordinate geometry to one O(2), one O(3), and one O(4) atom. In the third Rb site, Rb(3) is bonded in a 7-coordinate geometry to one Se(2), two equivalent Se(4), one O(3), one O(4), and two equivalent O(1) atoms. In the fourth Rb site, Rb(4) is bonded in a 8-coordinate geometry to two equivalent Se(2), two equivalent Se(4), one O(1), one O(2), one O(3), and one O(4) atom. Sn(1) is bonded to one Se(1), one Se(2), one Se(3), and one Se(4) atom to form SnSe4 tetrahedra that share  a cornercorner with one O(2)Rb3Se trigonal pyramid. There are four inequivalent Se sites. In the first Se site, Se(1) is bonded in a 1-coordinate geometry to one Sn(1) and one O(1) atom. In the second Se site, Se(2) is bonded in a distorted single-bond geometry to one Rb(3), two equivalent Rb(4), one Sn(1), and one O(3) atom. In the third Se site, Se(3) is bonded in a distorted single-bond geometry to one Sn(1) and one O(2) atom. In the fourth Se site, Se(4) is bonded to one Rb(1), two equivalent Rb(3), two equivalent Rb(4), and one Sn(1) atom to form distorted SeRb5Sn pentagonal pyramids that share  a cornercorner with one O(2)Rb3Se trigonal pyramid, edges with two equivalent Se(4)Rb5Sn pentagonal pyramids, and  an edgeedge with one O(2)Rb3Se trigonal pyramid. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Rb(4), two equivalent Rb(3), one Se(1), and one O(4) atom. In the second O site, O(2) is bonded to one Rb(1), one Rb(2), one Rb(4), and one Se(3) atom to form distorted ORb3Se trigonal pyramids that share  a cornercorner with one Se(4)Rb5Sn pentagonal pyramid,  a cornercorner with one Sn(1)Se4 tetrahedra, and  an edgeedge with one Se(4)Rb5Sn pentagonal pyramid. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Rb(1), one Rb(2), one Rb(3), one Rb(4), and one Se(2) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Rb(1), one Rb(2), one Rb(3), one Rb(4), and one O(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb4Sn(SeO)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.676
_cell_length_b   9.028
_cell_length_c   11.411
_cell_angle_alpha   113.261
_cell_angle_beta   75.703
_cell_angle_gamma   106.908
_symmetry_Int_Tables_number   1
_cell_volume   776.731
_cell_formula_units_Z   2
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  0.484  0.811  0.262  1.0
  Rb  Rb1  1  0.516  0.189  0.738  1.0
  Rb  Rb2  1  0.102  0.861  0.531  1.0
  Rb  Rb3  1  0.898  0.139  0.469  1.0
  Rb  Rb4  1  0.819  0.614  0.002  1.0
  Rb  Rb5  1  0.181  0.386  0.998  1.0
  Rb  Rb6  1  0.800  0.039  0.859  1.0
  Rb  Rb7  1  0.200  0.961  0.141  1.0
  Sn  Sn8  1  0.644  0.329  0.256  1.0
  Sn  Sn9  1  0.356  0.671  0.744  1.0
  Se  Se10  1  0.799  0.637  0.341  1.0
  Se  Se11  1  0.201  0.363  0.659  1.0
  Se  Se12  1  0.893  0.179  0.188  1.0
  Se  Se13  1  0.107  0.821  0.812  1.0
  Se  Se14  1  0.453  0.249  0.459  1.0
  Se  Se15  1  0.547  0.751  0.541  1.0
  Se  Se16  1  0.505  0.291  0.074  1.0
  Se  Se17  1  0.495  0.709  0.926  1.0
  O  O18  1  0.995  0.611  0.196  1.0
  O  O19  1  0.005  0.389  0.804  1.0
  O  O20  1  0.691  0.931  0.612  1.0
  O  O21  1  0.309  0.069  0.388  1.0
  O  O22  1  0.822  0.977  0.200  1.0
  O  O23  1  0.178  0.023  0.800  1.0
  O  O24  1  0.142  0.709  0.248  1.0
  O  O25  1  0.858  0.291  0.752  1.0
[/CIF]
.