The crystal structure described by YP5 crystallizes in the monoclinic P2_1/m space group. Y(1) is bonded in a 8-coordinate geometry to two equivalent P(1), two equivalent P(2), and four equivalent P(3) atoms. There are three inequivalent P sites. In the first P site, P(3) is bonded to two equivalent Y(1), one P(2), and one P(3) atom to form PY2P2 tetrahedra that share corners with four equivalent P(3)Y2P2 tetrahedra, corners with five equivalent P(1)Y2P2 tetrahedra, corners with six equivalent P(2)YP3 tetrahedra, and  an edgeedge with one P(3)Y2P2 tetrahedra. In the second P site, P(1) is bonded to two equivalent Y(1) and two equivalent P(2) atoms to form distorted PY2P2 tetrahedra that share corners with two equivalent P(1)Y2P2 tetrahedra, corners with six equivalent P(2)YP3 tetrahedra, and corners with ten equivalent P(3)Y2P2 tetrahedra. In the third P site, P(2) is bonded to one Y(1), one P(1), one P(2), and one P(3) atom to form distorted PYP3 tetrahedra that share corners with three equivalent P(1)Y2P2 tetrahedra, corners with six equivalent P(3)Y2P2 tetrahedra, and  an edgeedge with one P(2)YP3 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_YP5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.969
_cell_length_b   5.359
_cell_length_c   9.405
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   102.273
_symmetry_Int_Tables_number   1
_cell_volume   244.706
_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
  Y  Y0  1  0.003  0.347  0.250  1.0
  Y  Y1  1  0.997  0.653  0.750  1.0
  P  P2  1  0.281  0.894  0.250  1.0
  P  P3  1  0.719  0.106  0.750  1.0
  P  P4  1  0.614  0.954  0.408  1.0
  P  P5  1  0.386  0.046  0.908  1.0
  P  P6  1  0.386  0.046  0.592  1.0
  P  P7  1  0.614  0.954  0.092  1.0
  P  P8  1  0.711  0.597  0.471  1.0
  P  P9  1  0.289  0.403  0.971  1.0
  P  P10  1  0.289  0.403  0.529  1.0
  P  P11  1  0.711  0.597  0.029  1.0
[/CIF]
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The crystal structure described by YP5 crystallizes in the monoclinic P2_1/m space group. Y(1) is bonded in a 8-coordinate geometry to two equivalent P(1), two equivalent P(2), and four equivalent P(3) atoms. There are three inequivalent P sites. In the first P site, P(3) is bonded to two equivalent Y(1), one P(2), and one P(3) atom to form PY2P2 tetrahedra that share corners with four equivalent P(3)Y2P2 tetrahedra, corners with five equivalent P(1)Y2P2 tetrahedra, corners with six equivalent P(2)YP3 tetrahedra, and  an edgeedge with one P(3)Y2P2 tetrahedra. In the second P site, P(1) is bonded to two equivalent Y(1) and two equivalent P(2) atoms to form distorted PY2P2 tetrahedra that share corners with two equivalent P(1)Y2P2 tetrahedra, corners with six equivalent P(2)YP3 tetrahedra, and corners with ten equivalent P(3)Y2P2 tetrahedra. In the third P site, P(2) is bonded to one Y(1), one P(1), one P(2), and one P(3) atom to form distorted PYP3 tetrahedra that share corners with three equivalent P(1)Y2P2 tetrahedra, corners with six equivalent P(3)Y2P2 tetrahedra, and  an edgeedge with one P(2)YP3 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_YP5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.969
_cell_length_b   5.359
_cell_length_c   9.405
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   102.273
_symmetry_Int_Tables_number   1
_cell_volume   244.706
_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
  Y  Y0  1  0.003  0.347  0.250  1.0
  Y  Y1  1  0.997  0.653  0.750  1.0
  P  P2  1  0.281  0.894  0.250  1.0
  P  P3  1  0.719  0.106  0.750  1.0
  P  P4  1  0.614  0.954  0.408  1.0
  P  P5  1  0.386  0.046  0.908  1.0
  P  P6  1  0.386  0.046  0.592  1.0
  P  P7  1  0.614  0.954  0.092  1.0
  P  P8  1  0.711  0.597  0.471  1.0
  P  P9  1  0.289  0.403  0.971  1.0
  P  P10  1  0.289  0.403  0.529  1.0
  P  P11  1  0.711  0.597  0.029  1.0
[/CIF]
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