The material described by UAs2 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 As(2) atoms. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 8-coordinate geometry to four equivalent U(1) and four equivalent As(1) atoms. In the second As site, As(2) is bonded to five equivalent U(1) atoms to form a mixture of distorted corner and edge-sharing AsU5 trigonal bipyramids. is represented by the CIF card [CIF]
data_UAs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.976
_cell_length_b   3.976
_cell_length_c   8.297
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   131.153
_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  0.750  0.750  0.281  1.0
  U  U1  1  0.250  0.250  0.719  1.0
  As  As2  1  0.250  0.750  0.000  1.0
  As  As3  1  0.750  0.250  0.000  1.0
  As  As4  1  0.750  0.750  0.639  1.0
  As  As5  1  0.250  0.250  0.361  1.0
[/CIF]
.
The material described by UAs2 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 As(2) atoms. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 8-coordinate geometry to four equivalent U(1) and four equivalent As(1) atoms. In the second As site, As(2) is bonded to five equivalent U(1) atoms to form a mixture of distorted corner and edge-sharing AsU5 trigonal bipyramids. is represented by the CIF card [CIF]
data_UAs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.976
_cell_length_b   3.976
_cell_length_c   8.297
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   131.153
_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  0.750  0.750  0.281  1.0
  U  U1  1  0.250  0.250  0.719  1.0
  As  As2  1  0.250  0.750  0.000  1.0
  As  As3  1  0.750  0.250  0.000  1.0
  As  As4  1  0.750  0.750  0.639  1.0
  As  As5  1  0.250  0.250  0.361  1.0
[/CIF]
.