The crystal structure described by EuP7 crystallizes in the monoclinic P2_1/c space group. Eu(1) is bonded in a 9-coordinate geometry to one P(1), one P(2), one P(3), one P(5), one P(7), two equivalent P(4), and two equivalent P(6) atoms. There are seven inequivalent P sites. In the first P site, P(1) is bonded to one Eu(1), one P(1), one P(3), and one P(4) atom to form PEuP3 tetrahedra that share corners with two equivalent P(6)Eu2P2 tetrahedra, corners with two equivalent P(5)EuP3 tetrahedra, corners with three equivalent P(4)Eu2P2 tetrahedra, corners with three equivalent P(7)EuP3 tetrahedra, and  a cornercorner with one P(2)EuP3 trigonal pyramid. In the second P site, P(2) is bonded to one Eu(1), one P(5), one P(6), and one P(7) atom to form distorted PEuP3 trigonal pyramids that share  a cornercorner with one P(4)Eu2P2 tetrahedra,  a cornercorner with one P(1)EuP3 tetrahedra,  a cornercorner with one P(7)EuP3 tetrahedra, corners with two equivalent P(5)EuP3 tetrahedra, corners with three equivalent P(6)Eu2P2 tetrahedra, and  an edgeedge with one P(4)Eu2P2 tetrahedra. In the third P site, P(3) is bonded in a see-saw-like geometry to one Eu(1), one P(1), one P(5), and one P(7) atom. In the fourth P site, P(4) is bonded to two equivalent Eu(1), one P(1), and one P(7) atom to form PEu2P2 tetrahedra that share corners with two equivalent P(4)Eu2P2 tetrahedra, corners with two equivalent P(5)EuP3 tetrahedra, corners with two equivalent P(7)EuP3 tetrahedra, corners with three equivalent P(1)EuP3 tetrahedra, corners with four equivalent P(6)Eu2P2 tetrahedra,  a cornercorner with one P(2)EuP3 trigonal pyramid, and  an edgeedge with one P(2)EuP3 trigonal pyramid. In the fifth P site, P(5) is bonded to one Eu(1), one P(2), one P(3), and one P(6) atom to form PEuP3 tetrahedra that share  a cornercorner with one P(6)Eu2P2 tetrahedra, corners with two equivalent P(4)Eu2P2 tetrahedra, corners with two equivalent P(1)EuP3 tetrahedra, corners with three equivalent P(7)EuP3 tetrahedra, corners with two equivalent P(2)EuP3 trigonal pyramids, and  an edgeedge with one P(6)Eu2P2 tetrahedra. In the sixth P site, P(6) is bonded to two equivalent Eu(1), one P(2), and one P(5) atom to form PEu2P2 tetrahedra that share  a cornercorner with one P(5)EuP3 tetrahedra, corners with two equivalent P(6)Eu2P2 tetrahedra, corners with two equivalent P(1)EuP3 tetrahedra, corners with three equivalent P(7)EuP3 tetrahedra, corners with four equivalent P(4)Eu2P2 tetrahedra, corners with three equivalent P(2)EuP3 trigonal pyramids, and  an edgeedge with one P(5)EuP3 tetrahedra. In the seventh P site, P(7) is bonded to one Eu(1), one P(2), one P(3), and one P(4) atom to form PEuP3 tetrahedra that share corners with two equivalent P(4)Eu2P2 tetrahedra, corners with three equivalent P(6)Eu2P2 tetrahedra, corners with three equivalent P(1)EuP3 tetrahedra, corners with three equivalent P(5)EuP3 tetrahedra, and  a cornercorner with one P(2)EuP3 trigonal pyramid. is represented by the CIF file [CIF]
data_EuP7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.705
_cell_length_b   10.636
_cell_length_c   11.504
_cell_angle_alpha   106.203
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   670.221
_cell_formula_units_Z   4
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  0.893  0.463  0.216  1.0
  Eu  Eu1  1  0.607  0.963  0.716  1.0
  Eu  Eu2  1  0.107  0.537  0.784  1.0
  Eu  Eu3  1  0.393  0.037  0.284  1.0
  P  P4  1  0.541  0.419  0.417  1.0
  P  P5  1  0.959  0.919  0.917  1.0
  P  P6  1  0.459  0.581  0.583  1.0
  P  P7  1  0.041  0.081  0.083  1.0
  P  P8  1  0.722  0.352  0.933  1.0
  P  P9  1  0.778  0.852  0.433  1.0
  P  P10  1  0.278  0.648  0.067  1.0
  P  P11  1  0.222  0.148  0.567  1.0
  P  P12  1  0.706  0.254  0.472  1.0
  P  P13  1  0.794  0.754  0.972  1.0
  P  P14  1  0.294  0.746  0.528  1.0
  P  P15  1  0.206  0.246  0.028  1.0
  P  P16  1  0.705  0.176  0.136  1.0
  P  P17  1  0.795  0.676  0.636  1.0
  P  P18  1  0.295  0.824  0.864  1.0
  P  P19  1  0.205  0.324  0.364  1.0
  P  P20  1  0.567  0.224  0.639  1.0
  P  P21  1  0.933  0.724  0.139  1.0
  P  P22  1  0.433  0.776  0.361  1.0
  P  P23  1  0.067  0.276  0.861  1.0
  P  P24  1  0.596  0.412  0.778  1.0
  P  P25  1  0.904  0.912  0.278  1.0
  P  P26  1  0.404  0.588  0.222  1.0
  P  P27  1  0.096  0.088  0.722  1.0
  P  P28  1  0.555  0.172  0.959  1.0
  P  P29  1  0.945  0.672  0.459  1.0
  P  P30  1  0.445  0.828  0.041  1.0
  P  P31  1  0.055  0.328  0.541  1.0
[/CIF]
.
The crystal structure described by EuP7 crystallizes in the monoclinic P2_1/c space group. Eu(1) is bonded in a 9-coordinate geometry to one P(1), one P(2), one P(3), one P(5), one P(7), two equivalent P(4), and two equivalent P(6) atoms. There are seven inequivalent P sites. In the first P site, P(1) is bonded to one Eu(1), one P(1), one P(3), and one P(4) atom to form PEuP3 tetrahedra that share corners with two equivalent P(6)Eu2P2 tetrahedra, corners with two equivalent P(5)EuP3 tetrahedra, corners with three equivalent P(4)Eu2P2 tetrahedra, corners with three equivalent P(7)EuP3 tetrahedra, and  a cornercorner with one P(2)EuP3 trigonal pyramid. In the second P site, P(2) is bonded to one Eu(1), one P(5), one P(6), and one P(7) atom to form distorted PEuP3 trigonal pyramids that share  a cornercorner with one P(4)Eu2P2 tetrahedra,  a cornercorner with one P(1)EuP3 tetrahedra,  a cornercorner with one P(7)EuP3 tetrahedra, corners with two equivalent P(5)EuP3 tetrahedra, corners with three equivalent P(6)Eu2P2 tetrahedra, and  an edgeedge with one P(4)Eu2P2 tetrahedra. In the third P site, P(3) is bonded in a see-saw-like geometry to one Eu(1), one P(1), one P(5), and one P(7) atom. In the fourth P site, P(4) is bonded to two equivalent Eu(1), one P(1), and one P(7) atom to form PEu2P2 tetrahedra that share corners with two equivalent P(4)Eu2P2 tetrahedra, corners with two equivalent P(5)EuP3 tetrahedra, corners with two equivalent P(7)EuP3 tetrahedra, corners with three equivalent P(1)EuP3 tetrahedra, corners with four equivalent P(6)Eu2P2 tetrahedra,  a cornercorner with one P(2)EuP3 trigonal pyramid, and  an edgeedge with one P(2)EuP3 trigonal pyramid. In the fifth P site, P(5) is bonded to one Eu(1), one P(2), one P(3), and one P(6) atom to form PEuP3 tetrahedra that share  a cornercorner with one P(6)Eu2P2 tetrahedra, corners with two equivalent P(4)Eu2P2 tetrahedra, corners with two equivalent P(1)EuP3 tetrahedra, corners with three equivalent P(7)EuP3 tetrahedra, corners with two equivalent P(2)EuP3 trigonal pyramids, and  an edgeedge with one P(6)Eu2P2 tetrahedra. In the sixth P site, P(6) is bonded to two equivalent Eu(1), one P(2), and one P(5) atom to form PEu2P2 tetrahedra that share  a cornercorner with one P(5)EuP3 tetrahedra, corners with two equivalent P(6)Eu2P2 tetrahedra, corners with two equivalent P(1)EuP3 tetrahedra, corners with three equivalent P(7)EuP3 tetrahedra, corners with four equivalent P(4)Eu2P2 tetrahedra, corners with three equivalent P(2)EuP3 trigonal pyramids, and  an edgeedge with one P(5)EuP3 tetrahedra. In the seventh P site, P(7) is bonded to one Eu(1), one P(2), one P(3), and one P(4) atom to form PEuP3 tetrahedra that share corners with two equivalent P(4)Eu2P2 tetrahedra, corners with three equivalent P(6)Eu2P2 tetrahedra, corners with three equivalent P(1)EuP3 tetrahedra, corners with three equivalent P(5)EuP3 tetrahedra, and  a cornercorner with one P(2)EuP3 trigonal pyramid. is represented by the CIF file [CIF]
data_EuP7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.705
_cell_length_b   10.636
_cell_length_c   11.504
_cell_angle_alpha   106.203
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   670.221
_cell_formula_units_Z   4
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  0.893  0.463  0.216  1.0
  Eu  Eu1  1  0.607  0.963  0.716  1.0
  Eu  Eu2  1  0.107  0.537  0.784  1.0
  Eu  Eu3  1  0.393  0.037  0.284  1.0
  P  P4  1  0.541  0.419  0.417  1.0
  P  P5  1  0.959  0.919  0.917  1.0
  P  P6  1  0.459  0.581  0.583  1.0
  P  P7  1  0.041  0.081  0.083  1.0
  P  P8  1  0.722  0.352  0.933  1.0
  P  P9  1  0.778  0.852  0.433  1.0
  P  P10  1  0.278  0.648  0.067  1.0
  P  P11  1  0.222  0.148  0.567  1.0
  P  P12  1  0.706  0.254  0.472  1.0
  P  P13  1  0.794  0.754  0.972  1.0
  P  P14  1  0.294  0.746  0.528  1.0
  P  P15  1  0.206  0.246  0.028  1.0
  P  P16  1  0.705  0.176  0.136  1.0
  P  P17  1  0.795  0.676  0.636  1.0
  P  P18  1  0.295  0.824  0.864  1.0
  P  P19  1  0.205  0.324  0.364  1.0
  P  P20  1  0.567  0.224  0.639  1.0
  P  P21  1  0.933  0.724  0.139  1.0
  P  P22  1  0.433  0.776  0.361  1.0
  P  P23  1  0.067  0.276  0.861  1.0
  P  P24  1  0.596  0.412  0.778  1.0
  P  P25  1  0.904  0.912  0.278  1.0
  P  P26  1  0.404  0.588  0.222  1.0
  P  P27  1  0.096  0.088  0.722  1.0
  P  P28  1  0.555  0.172  0.959  1.0
  P  P29  1  0.945  0.672  0.459  1.0
  P  P30  1  0.445  0.828  0.041  1.0
  P  P31  1  0.055  0.328  0.541  1.0
[/CIF]
.