The structure described by KEuPSe4 crystallizes in the monoclinic P2_1/m space group. K(1) is bonded in a 8-coordinate geometry to one Se(2), three equivalent Se(1), and four equivalent Se(3) atoms. Eu(1) is bonded in a 8-coordinate geometry to one Se(1), three equivalent Se(2), and four equivalent Se(3) atoms. P(1) is bonded in a tetrahedral geometry to one Se(1), one Se(2), and two equivalent Se(3) atoms. There are three inequivalent Se sites. In the first Se site, Se(1) is bonded to three equivalent K(1), one Eu(1), and one P(1) atom to form distorted SeK3EuP trigonal bipyramids that share corners with ten equivalent Se(3)K2Eu2P square pyramids, corners with two equivalent Se(1)K3EuP trigonal bipyramids, edges with four equivalent Se(3)K2Eu2P square pyramids, and edges with two equivalent Se(1)K3EuP trigonal bipyramids. In the second Se site, Se(2) is bonded in a 5-coordinate geometry to one K(1), three equivalent Eu(1), and one P(1) atom. In the third Se site, Se(3) is bonded to two equivalent K(1), two equivalent Eu(1), and one P(1) atom to form distorted SeK2Eu2P square pyramids that share corners with four equivalent Se(3)K2Eu2P square pyramids, corners with five equivalent Se(1)K3EuP trigonal bipyramids, edges with three equivalent Se(3)K2Eu2P square pyramids, edges with two equivalent Se(1)K3EuP trigonal bipyramids, and  a faceface with one Se(3)K2Eu2P square pyramid. is represented by the CIF card [CIF]
data_KEuPSe4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.966
_cell_length_b   6.910
_cell_length_c   9.092
_cell_angle_alpha   72.601
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   417.609
_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
  K  K0  1  0.250  0.757  0.937  1.0
  K  K1  1  0.750  0.243  0.063  1.0
  Eu  Eu2  1  0.250  0.732  0.451  1.0
  Eu  Eu3  1  0.750  0.268  0.549  1.0
  P  P4  1  0.250  0.295  0.310  1.0
  P  P5  1  0.750  0.705  0.690  1.0
  Se  Se6  1  0.250  0.100  0.158  1.0
  Se  Se7  1  0.750  0.880  0.443  1.0
  Se  Se8  1  0.999  0.500  0.265  1.0
  Se  Se9  1  0.499  0.500  0.735  1.0
  Se  Se10  1  0.001  0.500  0.735  1.0
  Se  Se11  1  0.501  0.500  0.265  1.0
  Se  Se12  1  0.250  0.120  0.557  1.0
  Se  Se13  1  0.750  0.900  0.842  1.0
[/CIF]
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The structure described by KEuPSe4 crystallizes in the monoclinic P2_1/m space group. K(1) is bonded in a 8-coordinate geometry to one Se(2), three equivalent Se(1), and four equivalent Se(3) atoms. Eu(1) is bonded in a 8-coordinate geometry to one Se(1), three equivalent Se(2), and four equivalent Se(3) atoms. P(1) is bonded in a tetrahedral geometry to one Se(1), one Se(2), and two equivalent Se(3) atoms. There are three inequivalent Se sites. In the first Se site, Se(1) is bonded to three equivalent K(1), one Eu(1), and one P(1) atom to form distorted SeK3EuP trigonal bipyramids that share corners with ten equivalent Se(3)K2Eu2P square pyramids, corners with two equivalent Se(1)K3EuP trigonal bipyramids, edges with four equivalent Se(3)K2Eu2P square pyramids, and edges with two equivalent Se(1)K3EuP trigonal bipyramids. In the second Se site, Se(2) is bonded in a 5-coordinate geometry to one K(1), three equivalent Eu(1), and one P(1) atom. In the third Se site, Se(3) is bonded to two equivalent K(1), two equivalent Eu(1), and one P(1) atom to form distorted SeK2Eu2P square pyramids that share corners with four equivalent Se(3)K2Eu2P square pyramids, corners with five equivalent Se(1)K3EuP trigonal bipyramids, edges with three equivalent Se(3)K2Eu2P square pyramids, edges with two equivalent Se(1)K3EuP trigonal bipyramids, and  a faceface with one Se(3)K2Eu2P square pyramid. is represented by the CIF card [CIF]
data_KEuPSe4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.966
_cell_length_b   6.910
_cell_length_c   9.092
_cell_angle_alpha   72.601
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   417.609
_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
  K  K0  1  0.250  0.757  0.937  1.0
  K  K1  1  0.750  0.243  0.063  1.0
  Eu  Eu2  1  0.250  0.732  0.451  1.0
  Eu  Eu3  1  0.750  0.268  0.549  1.0
  P  P4  1  0.250  0.295  0.310  1.0
  P  P5  1  0.750  0.705  0.690  1.0
  Se  Se6  1  0.250  0.100  0.158  1.0
  Se  Se7  1  0.750  0.880  0.443  1.0
  Se  Se8  1  0.999  0.500  0.265  1.0
  Se  Se9  1  0.499  0.500  0.735  1.0
  Se  Se10  1  0.001  0.500  0.735  1.0
  Se  Se11  1  0.501  0.500  0.265  1.0
  Se  Se12  1  0.250  0.120  0.557  1.0
  Se  Se13  1  0.750  0.900  0.842  1.0
[/CIF]
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