The material described by PUAs is Matlockite structured and crystallizes in the tetragonal P4/nmm space group. U(1) is bonded in a 9-coordinate geometry to four equivalent As(1) and five equivalent P(1) atoms. As(1) is bonded in a 8-coordinate geometry to four equivalent U(1) and four equivalent As(1) atoms. P(1) is bonded to five equivalent U(1) atoms to form a mixture of corner and edge-sharing PU5 square pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_UAsP
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.888
_cell_length_b   3.888
_cell_length_c   8.099
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   122.418
_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
  U  U0  1  0.000  0.500  0.708  1.0
  U  U1  1  0.500  0.000  0.292  1.0
  As  As2  1  0.000  0.000  0.000  1.0
  As  As3  1  0.500  0.500  0.000  1.0
  P  P4  1  0.000  0.500  0.361  1.0
  P  P5  1  0.500  0.000  0.639  1.0
[/CIF]
.
The material described by PUAs is Matlockite structured and crystallizes in the tetragonal P4/nmm space group. U(1) is bonded in a 9-coordinate geometry to four equivalent As(1) and five equivalent P(1) atoms. As(1) is bonded in a 8-coordinate geometry to four equivalent U(1) and four equivalent As(1) atoms. P(1) is bonded to five equivalent U(1) atoms to form a mixture of corner and edge-sharing PU5 square pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_UAsP
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.888
_cell_length_b   3.888
_cell_length_c   8.099
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   122.418
_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
  U  U0  1  0.000  0.500  0.708  1.0
  U  U1  1  0.500  0.000  0.292  1.0
  As  As2  1  0.000  0.000  0.000  1.0
  As  As3  1  0.500  0.500  0.000  1.0
  P  P4  1  0.000  0.500  0.361  1.0
  P  P5  1  0.500  0.000  0.639  1.0
[/CIF]
.