The material described by Sr3P4 crystallizes in the orthorhombic Fdd2 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to four equivalent P(1) and four equivalent P(2) atoms. In the second Sr site, Sr(2) is bonded to four equivalent P(1) and four equivalent P(2) atoms to form SrP8 hexagonal bipyramids that share corners with four equivalent Sr(2)P8 hexagonal bipyramids, corners with four equivalent P(2)Sr6P pentagonal bipyramids, and edges with two equivalent Sr(2)P8 hexagonal bipyramids. There are two inequivalent P sites. In the first P site, P(1) is bonded in a 8-coordinate geometry to two equivalent Sr(2), four equivalent Sr(1), one P(1), and one P(2) atom. In the second P site, P(2) is bonded to two equivalent Sr(2), four equivalent Sr(1), and one P(1) atom to form distorted PSr6P pentagonal bipyramids that share corners with two equivalent Sr(2)P8 hexagonal bipyramids, corners with six equivalent P(2)Sr6P pentagonal bipyramids, and edges with six equivalent P(2)Sr6P pentagonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr3P4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.867
_cell_length_b   7.740
_cell_length_c   9.194
_cell_angle_alpha   83.054
_cell_angle_beta   71.394
_cell_angle_gamma   67.727
_symmetry_Int_Tables_number   1
_cell_volume   366.179
_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
  Sr  Sr0  1  0.582  0.996  0.337  1.0
  Sr  Sr1  1  0.915  0.004  0.663  1.0
  Sr  Sr2  1  0.328  0.504  0.837  1.0
  Sr  Sr3  1  0.669  0.496  0.163  1.0
  Sr  Sr4  1  0.004  0.500  0.500  1.0
  Sr  Sr5  1  0.254  0.000  0.000  1.0
  P  P6  1  0.422  0.661  0.497  1.0
  P  P7  1  0.580  0.339  0.503  1.0
  P  P8  1  0.833  0.839  0.997  1.0
  P  P9  1  0.669  0.161  0.003  1.0
  P  P10  1  0.341  0.184  0.654  1.0
  P  P11  1  0.179  0.816  0.346  1.0
  P  P12  1  0.745  0.684  0.846  1.0
  P  P13  1  0.275  0.316  0.154  1.0
[/CIF]
.
The material described by Sr3P4 crystallizes in the orthorhombic Fdd2 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to four equivalent P(1) and four equivalent P(2) atoms. In the second Sr site, Sr(2) is bonded to four equivalent P(1) and four equivalent P(2) atoms to form SrP8 hexagonal bipyramids that share corners with four equivalent Sr(2)P8 hexagonal bipyramids, corners with four equivalent P(2)Sr6P pentagonal bipyramids, and edges with two equivalent Sr(2)P8 hexagonal bipyramids. There are two inequivalent P sites. In the first P site, P(1) is bonded in a 8-coordinate geometry to two equivalent Sr(2), four equivalent Sr(1), one P(1), and one P(2) atom. In the second P site, P(2) is bonded to two equivalent Sr(2), four equivalent Sr(1), and one P(1) atom to form distorted PSr6P pentagonal bipyramids that share corners with two equivalent Sr(2)P8 hexagonal bipyramids, corners with six equivalent P(2)Sr6P pentagonal bipyramids, and edges with six equivalent P(2)Sr6P pentagonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr3P4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.867
_cell_length_b   7.740
_cell_length_c   9.194
_cell_angle_alpha   83.054
_cell_angle_beta   71.394
_cell_angle_gamma   67.727
_symmetry_Int_Tables_number   1
_cell_volume   366.179
_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
  Sr  Sr0  1  0.582  0.996  0.337  1.0
  Sr  Sr1  1  0.915  0.004  0.663  1.0
  Sr  Sr2  1  0.328  0.504  0.837  1.0
  Sr  Sr3  1  0.669  0.496  0.163  1.0
  Sr  Sr4  1  0.004  0.500  0.500  1.0
  Sr  Sr5  1  0.254  0.000  0.000  1.0
  P  P6  1  0.422  0.661  0.497  1.0
  P  P7  1  0.580  0.339  0.503  1.0
  P  P8  1  0.833  0.839  0.997  1.0
  P  P9  1  0.669  0.161  0.003  1.0
  P  P10  1  0.341  0.184  0.654  1.0
  P  P11  1  0.179  0.816  0.346  1.0
  P  P12  1  0.745  0.684  0.846  1.0
  P  P13  1  0.275  0.316  0.154  1.0
[/CIF]
.