The material structure described by SrK2P4O12 crystallizes in the tetragonal I-4 space group. K(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two 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 K(1) and two equivalent P(1) atoms. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(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 K(1), one Sr(1), and one P(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2Sr(PO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.425
_cell_length_b   7.425
_cell_length_c   7.425
_cell_angle_alpha   118.741
_cell_angle_beta   118.741
_cell_angle_gamma   92.195
_symmetry_Int_Tables_number   1
_cell_volume   294.782
_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
  K  K0  1  0.326  0.326  0.000  1.0
  K  K1  1  0.674  0.674  0.000  1.0
  Sr  Sr2  1  0.250  0.750  0.500  1.0
  P  P3  1  0.815  0.875  0.624  1.0
  P  P4  1  0.125  0.749  0.939  1.0
  P  P5  1  0.810  0.185  0.061  1.0
  P  P6  1  0.251  0.190  0.376  1.0
  O  O7  1  0.987  0.129  0.247  1.0
  O  O8  1  0.882  0.741  0.753  1.0
  O  O9  1  0.259  0.013  0.141  1.0
  O  O10  1  0.854  0.427  0.193  1.0
  O  O11  1  0.233  0.661  0.807  1.0
  O  O12  1  0.971  0.913  0.562  1.0
  O  O13  1  0.351  0.409  0.438  1.0
  O  O14  1  0.087  0.649  0.058  1.0
  O  O15  1  0.573  0.767  0.428  1.0
  O  O16  1  0.591  0.029  0.942  1.0
  O  O17  1  0.871  0.118  0.859  1.0
  O  O18  1  0.339  0.146  0.572  1.0
[/CIF]
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The material structure described by SrK2P4O12 crystallizes in the tetragonal I-4 space group. K(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two 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 K(1) and two equivalent P(1) atoms. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(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 K(1), one Sr(1), and one P(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2Sr(PO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.425
_cell_length_b   7.425
_cell_length_c   7.425
_cell_angle_alpha   118.741
_cell_angle_beta   118.741
_cell_angle_gamma   92.195
_symmetry_Int_Tables_number   1
_cell_volume   294.782
_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
  K  K0  1  0.326  0.326  0.000  1.0
  K  K1  1  0.674  0.674  0.000  1.0
  Sr  Sr2  1  0.250  0.750  0.500  1.0
  P  P3  1  0.815  0.875  0.624  1.0
  P  P4  1  0.125  0.749  0.939  1.0
  P  P5  1  0.810  0.185  0.061  1.0
  P  P6  1  0.251  0.190  0.376  1.0
  O  O7  1  0.987  0.129  0.247  1.0
  O  O8  1  0.882  0.741  0.753  1.0
  O  O9  1  0.259  0.013  0.141  1.0
  O  O10  1  0.854  0.427  0.193  1.0
  O  O11  1  0.233  0.661  0.807  1.0
  O  O12  1  0.971  0.913  0.562  1.0
  O  O13  1  0.351  0.409  0.438  1.0
  O  O14  1  0.087  0.649  0.058  1.0
  O  O15  1  0.573  0.767  0.428  1.0
  O  O16  1  0.591  0.029  0.942  1.0
  O  O17  1  0.871  0.118  0.859  1.0
  O  O18  1  0.339  0.146  0.572  1.0
[/CIF]
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