The compound described by Rb2Sr(PO3)4 crystallizes in the tetragonal I-4 space group. Rb(1) is bonded in a 10-coordinate geometry to two equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms. Sr(1) is bonded in a 8-coordinate geometry to four equivalent O(2) and four equivalent O(3) atoms. P(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form corner-sharing PO4 tetrahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Rb(1) and two equivalent P(1) atoms. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Rb(1), one Sr(1), and one P(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Rb(1), one Sr(1), and one P(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb2Sr(PO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.417
_cell_length_b   7.417
_cell_length_c   7.417
_cell_angle_alpha   118.633
_cell_angle_beta   118.633
_cell_angle_gamma   92.384
_symmetry_Int_Tables_number   1
_cell_volume   294.171
_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  0.422  0.922  0.500  1.0
  Rb  Rb1  1  0.078  0.578  0.500  1.0
  Sr  Sr2  1  0.000  0.000  0.000  1.0
  P  P3  1  0.562  0.004  0.128  1.0
  P  P4  1  0.875  0.434  0.872  1.0
  P  P5  1  0.566  0.438  0.442  1.0
  P  P6  1  0.996  0.125  0.558  1.0
  O  O7  1  0.625  0.265  0.259  1.0
  O  O8  1  0.006  0.366  0.741  1.0
  O  O9  1  0.634  0.375  0.640  1.0
  O  O10  1  0.735  0.994  0.360  1.0
  O  O11  1  0.610  0.917  0.937  1.0
  O  O12  1  0.980  0.673  0.063  1.0
  O  O13  1  0.327  0.390  0.307  1.0
  O  O14  1  0.083  0.020  0.693  1.0
  O  O15  1  0.343  0.906  0.062  1.0
  O  O16  1  0.844  0.280  0.938  1.0
  O  O17  1  0.720  0.657  0.563  1.0
  O  O18  1  0.094  0.156  0.437  1.0
[/CIF]
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The compound described by Rb2Sr(PO3)4 crystallizes in the tetragonal I-4 space group. Rb(1) is bonded in a 10-coordinate geometry to two equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms. Sr(1) is bonded in a 8-coordinate geometry to four equivalent O(2) and four equivalent O(3) atoms. P(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form corner-sharing PO4 tetrahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Rb(1) and two equivalent P(1) atoms. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Rb(1), one Sr(1), and one P(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Rb(1), one Sr(1), and one P(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb2Sr(PO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.417
_cell_length_b   7.417
_cell_length_c   7.417
_cell_angle_alpha   118.633
_cell_angle_beta   118.633
_cell_angle_gamma   92.384
_symmetry_Int_Tables_number   1
_cell_volume   294.171
_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  0.422  0.922  0.500  1.0
  Rb  Rb1  1  0.078  0.578  0.500  1.0
  Sr  Sr2  1  0.000  0.000  0.000  1.0
  P  P3  1  0.562  0.004  0.128  1.0
  P  P4  1  0.875  0.434  0.872  1.0
  P  P5  1  0.566  0.438  0.442  1.0
  P  P6  1  0.996  0.125  0.558  1.0
  O  O7  1  0.625  0.265  0.259  1.0
  O  O8  1  0.006  0.366  0.741  1.0
  O  O9  1  0.634  0.375  0.640  1.0
  O  O10  1  0.735  0.994  0.360  1.0
  O  O11  1  0.610  0.917  0.937  1.0
  O  O12  1  0.980  0.673  0.063  1.0
  O  O13  1  0.327  0.390  0.307  1.0
  O  O14  1  0.083  0.020  0.693  1.0
  O  O15  1  0.343  0.906  0.062  1.0
  O  O16  1  0.844  0.280  0.938  1.0
  O  O17  1  0.720  0.657  0.563  1.0
  O  O18  1  0.094  0.156  0.437  1.0
[/CIF]
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