The structure described by Sc5As3 crystallizes in the orthorhombic Pnma space group. There are four inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 5-coordinate geometry to two equivalent As(1) and three equivalent As(2) atoms. In the second Sc site, Sc(2) is bonded in a 5-coordinate geometry to two equivalent As(1) and four equivalent As(2) atoms. In the third Sc site, Sc(3) is bonded to one As(1) and four equivalent As(2) atoms to form distorted edge-sharing ScAs5 square pyramids. In the fourth Sc site, Sc(4) is bonded in a 5-coordinate geometry to one As(1) and four 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 one Sc(3), one Sc(4), two equivalent Sc(2), and four equivalent Sc(1) atoms. In the second As site, As(2) is bonded in a 9-coordinate geometry to two equivalent Sc(2), two equivalent Sc(3), two equivalent Sc(4), and three equivalent Sc(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sc5As3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.256
_cell_length_b   8.156
_cell_length_c   10.758
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   636.703
_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
  Sc  Sc0  1  0.810  0.947  0.929  1.0
  Sc  Sc1  1  0.310  0.053  0.571  1.0
  Sc  Sc2  1  0.190  0.447  0.071  1.0
  Sc  Sc3  1  0.690  0.553  0.429  1.0
  Sc  Sc4  1  0.190  0.053  0.071  1.0
  Sc  Sc5  1  0.690  0.947  0.429  1.0
  Sc  Sc6  1  0.810  0.553  0.929  1.0
  Sc  Sc7  1  0.310  0.447  0.571  1.0
  Sc  Sc8  1  0.165  0.750  0.778  1.0
  Sc  Sc9  1  0.665  0.250  0.722  1.0
  Sc  Sc10  1  0.835  0.250  0.222  1.0
  Sc  Sc11  1  0.335  0.750  0.278  1.0
  Sc  Sc12  1  0.470  0.750  0.996  1.0
  Sc  Sc13  1  0.970  0.250  0.504  1.0
  Sc  Sc14  1  0.530  0.250  0.004  1.0
  Sc  Sc15  1  0.030  0.750  0.496  1.0
  Sc  Sc16  1  0.651  0.750  0.706  1.0
  Sc  Sc17  1  0.151  0.250  0.794  1.0
  Sc  Sc18  1  0.349  0.250  0.294  1.0
  Sc  Sc19  1  0.849  0.750  0.206  1.0
  As  As20  1  0.416  0.750  0.519  1.0
  As  As21  1  0.916  0.250  0.981  1.0
  As  As22  1  0.584  0.250  0.481  1.0
  As  As23  1  0.084  0.750  0.019  1.0
  As  As24  1  0.937  0.509  0.673  1.0
  As  As25  1  0.437  0.491  0.827  1.0
  As  As26  1  0.063  0.009  0.327  1.0
  As  As27  1  0.563  0.991  0.173  1.0
  As  As28  1  0.063  0.491  0.327  1.0
  As  As29  1  0.563  0.509  0.173  1.0
  As  As30  1  0.937  0.991  0.673  1.0
  As  As31  1  0.437  0.009  0.827  1.0
[/CIF]
.
The structure described by Sc5As3 crystallizes in the orthorhombic Pnma space group. There are four inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 5-coordinate geometry to two equivalent As(1) and three equivalent As(2) atoms. In the second Sc site, Sc(2) is bonded in a 5-coordinate geometry to two equivalent As(1) and four equivalent As(2) atoms. In the third Sc site, Sc(3) is bonded to one As(1) and four equivalent As(2) atoms to form distorted edge-sharing ScAs5 square pyramids. In the fourth Sc site, Sc(4) is bonded in a 5-coordinate geometry to one As(1) and four 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 one Sc(3), one Sc(4), two equivalent Sc(2), and four equivalent Sc(1) atoms. In the second As site, As(2) is bonded in a 9-coordinate geometry to two equivalent Sc(2), two equivalent Sc(3), two equivalent Sc(4), and three equivalent Sc(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sc5As3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.256
_cell_length_b   8.156
_cell_length_c   10.758
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   636.703
_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
  Sc  Sc0  1  0.810  0.947  0.929  1.0
  Sc  Sc1  1  0.310  0.053  0.571  1.0
  Sc  Sc2  1  0.190  0.447  0.071  1.0
  Sc  Sc3  1  0.690  0.553  0.429  1.0
  Sc  Sc4  1  0.190  0.053  0.071  1.0
  Sc  Sc5  1  0.690  0.947  0.429  1.0
  Sc  Sc6  1  0.810  0.553  0.929  1.0
  Sc  Sc7  1  0.310  0.447  0.571  1.0
  Sc  Sc8  1  0.165  0.750  0.778  1.0
  Sc  Sc9  1  0.665  0.250  0.722  1.0
  Sc  Sc10  1  0.835  0.250  0.222  1.0
  Sc  Sc11  1  0.335  0.750  0.278  1.0
  Sc  Sc12  1  0.470  0.750  0.996  1.0
  Sc  Sc13  1  0.970  0.250  0.504  1.0
  Sc  Sc14  1  0.530  0.250  0.004  1.0
  Sc  Sc15  1  0.030  0.750  0.496  1.0
  Sc  Sc16  1  0.651  0.750  0.706  1.0
  Sc  Sc17  1  0.151  0.250  0.794  1.0
  Sc  Sc18  1  0.349  0.250  0.294  1.0
  Sc  Sc19  1  0.849  0.750  0.206  1.0
  As  As20  1  0.416  0.750  0.519  1.0
  As  As21  1  0.916  0.250  0.981  1.0
  As  As22  1  0.584  0.250  0.481  1.0
  As  As23  1  0.084  0.750  0.019  1.0
  As  As24  1  0.937  0.509  0.673  1.0
  As  As25  1  0.437  0.491  0.827  1.0
  As  As26  1  0.063  0.009  0.327  1.0
  As  As27  1  0.563  0.991  0.173  1.0
  As  As28  1  0.063  0.491  0.327  1.0
  As  As29  1  0.563  0.509  0.173  1.0
  As  As30  1  0.937  0.991  0.673  1.0
  As  As31  1  0.437  0.009  0.827  1.0
[/CIF]
.