The material described by Eu2Zn2P3 crystallizes in the monoclinic C2/m space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded to one P(2), two equivalent P(1), and three equivalent P(3) atoms to form distorted EuP6 octahedra that share corners with three equivalent Zn(1)Eu2P4 tetrahedra, corners with four equivalent Zn(2)EuP4 tetrahedra, edges with four equivalent Eu(1)P6 octahedra, edges with two equivalent Zn(2)EuP4 tetrahedra, and edges with three equivalent Zn(1)Eu2P4 tetrahedra. In the second Eu site, Eu(2) is bonded in a 10-coordinate geometry to one Zn(2), two equivalent Zn(1), three equivalent P(2), and four equivalent P(1) atoms. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to two equivalent Eu(2), one P(1), one P(2), and two equivalent P(3) atoms to form distorted ZnEu2P4 tetrahedra that share corners with three equivalent Eu(1)P6 octahedra, corners with two equivalent Zn(2)EuP4 tetrahedra, edges with three equivalent Eu(1)P6 octahedra, edges with two equivalent Zn(1)Eu2P4 tetrahedra, and faces with two equivalent Zn(2)EuP4 tetrahedra. The corner-sharing octahedral tilt angles range from 20-49°. In the second Zn site, Zn(2) is bonded to one Eu(2), two equivalent P(2), and two equivalent P(3) atoms to form distorted ZnEuP4 tetrahedra that share corners with four equivalent Eu(1)P6 octahedra, corners with two equivalent Zn(1)Eu2P4 tetrahedra, corners with two equivalent Zn(2)EuP4 tetrahedra, edges with two equivalent Eu(1)P6 octahedra,  an edgeedge with one Zn(2)EuP4 tetrahedra, and faces with two equivalent Zn(1)Eu2P4 tetrahedra. The corner-sharing octahedral tilt angles range from 23-55°. There are three inequivalent P sites. In the first P site, P(1) is bonded in a 8-coordinate geometry to two equivalent Eu(1), four equivalent Eu(2), one Zn(1), and one P(1) atom. In the second P site, P(2) is bonded in a 7-coordinate geometry to one Eu(1), three equivalent Eu(2), one Zn(1), and two equivalent Zn(2) atoms. In the third P site, P(3) is bonded in a 7-coordinate geometry to three equivalent Eu(1), two equivalent Zn(1), and two equivalent Zn(2) atoms. is represented by the CIF card [CIF]
data_Eu2Zn2P3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.014
_cell_length_b   8.014
_cell_length_c   11.475
_cell_angle_alpha   54.839
_cell_angle_beta   54.839
_cell_angle_gamma   29.659
_symmetry_Int_Tables_number   1
_cell_volume   292.891
_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
  Eu  Eu0  1  0.270  0.270  0.333  1.0
  Eu  Eu1  1  0.730  0.730  0.667  1.0
  Eu  Eu2  1  0.392  0.392  0.952  1.0
  Eu  Eu3  1  0.608  0.608  0.048  1.0
  Zn  Zn4  1  0.041  0.041  0.684  1.0
  Zn  Zn5  1  0.959  0.959  0.316  1.0
  Zn  Zn6  1  0.410  0.410  0.652  1.0
  Zn  Zn7  1  0.590  0.590  0.348  1.0
  P  P8  1  0.072  0.072  0.881  1.0
  P  P9  1  0.928  0.928  0.119  1.0
  P  P10  1  0.152  0.152  0.202  1.0
  P  P11  1  0.848  0.848  0.798  1.0
  P  P12  1  0.387  0.387  0.460  1.0
  P  P13  1  0.613  0.613  0.540  1.0
[/CIF]
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The material described by Eu2Zn2P3 crystallizes in the monoclinic C2/m space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded to one P(2), two equivalent P(1), and three equivalent P(3) atoms to form distorted EuP6 octahedra that share corners with three equivalent Zn(1)Eu2P4 tetrahedra, corners with four equivalent Zn(2)EuP4 tetrahedra, edges with four equivalent Eu(1)P6 octahedra, edges with two equivalent Zn(2)EuP4 tetrahedra, and edges with three equivalent Zn(1)Eu2P4 tetrahedra. In the second Eu site, Eu(2) is bonded in a 10-coordinate geometry to one Zn(2), two equivalent Zn(1), three equivalent P(2), and four equivalent P(1) atoms. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to two equivalent Eu(2), one P(1), one P(2), and two equivalent P(3) atoms to form distorted ZnEu2P4 tetrahedra that share corners with three equivalent Eu(1)P6 octahedra, corners with two equivalent Zn(2)EuP4 tetrahedra, edges with three equivalent Eu(1)P6 octahedra, edges with two equivalent Zn(1)Eu2P4 tetrahedra, and faces with two equivalent Zn(2)EuP4 tetrahedra. The corner-sharing octahedral tilt angles range from 20-49°. In the second Zn site, Zn(2) is bonded to one Eu(2), two equivalent P(2), and two equivalent P(3) atoms to form distorted ZnEuP4 tetrahedra that share corners with four equivalent Eu(1)P6 octahedra, corners with two equivalent Zn(1)Eu2P4 tetrahedra, corners with two equivalent Zn(2)EuP4 tetrahedra, edges with two equivalent Eu(1)P6 octahedra,  an edgeedge with one Zn(2)EuP4 tetrahedra, and faces with two equivalent Zn(1)Eu2P4 tetrahedra. The corner-sharing octahedral tilt angles range from 23-55°. There are three inequivalent P sites. In the first P site, P(1) is bonded in a 8-coordinate geometry to two equivalent Eu(1), four equivalent Eu(2), one Zn(1), and one P(1) atom. In the second P site, P(2) is bonded in a 7-coordinate geometry to one Eu(1), three equivalent Eu(2), one Zn(1), and two equivalent Zn(2) atoms. In the third P site, P(3) is bonded in a 7-coordinate geometry to three equivalent Eu(1), two equivalent Zn(1), and two equivalent Zn(2) atoms. is represented by the CIF card [CIF]
data_Eu2Zn2P3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.014
_cell_length_b   8.014
_cell_length_c   11.475
_cell_angle_alpha   54.839
_cell_angle_beta   54.839
_cell_angle_gamma   29.659
_symmetry_Int_Tables_number   1
_cell_volume   292.891
_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
  Eu  Eu0  1  0.270  0.270  0.333  1.0
  Eu  Eu1  1  0.730  0.730  0.667  1.0
  Eu  Eu2  1  0.392  0.392  0.952  1.0
  Eu  Eu3  1  0.608  0.608  0.048  1.0
  Zn  Zn4  1  0.041  0.041  0.684  1.0
  Zn  Zn5  1  0.959  0.959  0.316  1.0
  Zn  Zn6  1  0.410  0.410  0.652  1.0
  Zn  Zn7  1  0.590  0.590  0.348  1.0
  P  P8  1  0.072  0.072  0.881  1.0
  P  P9  1  0.928  0.928  0.119  1.0
  P  P10  1  0.152  0.152  0.202  1.0
  P  P11  1  0.848  0.848  0.798  1.0
  P  P12  1  0.387  0.387  0.460  1.0
  P  P13  1  0.613  0.613  0.540  1.0
[/CIF]
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