data_Sc3GeAs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.99
_cell_length_b   4.99
_cell_length_c   4.99
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sc3GeAs
_chemical_formula_sum   'Sc3 Ge1 As1'
_cell_volume   124.22
_cell_formula_units_Z   1
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  0.0  0.49  0.0  1.0
  Sc  Sc1  1  0.0  0.0  0.49  1.0
  Sc  Sc2  1  0.49  0.0  0.0  1.0
  Ge  Ge4  1  0.0  0.0  0.0  1.0
  As  As3  1  0.49  0.49  0.49  1.0

data_Sc3GeAs
_symmetry_space_group_name_H-M   Pm-3m
_cell_length_a   4.99
_cell_length_b   4.99
_cell_length_c   4.99
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   221
_chemical_formula_structural   Sc3GeAs
_chemical_formula_sum   'Sc3 Ge1 As1'
_cell_volume   124.22
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-x, -y, -z'
  3  '-y, x, z'
  4  'y, -x, -z'
  5  '-x, -y, z'
  6  'x, y, -z'
  7  'y, -x, z'
  8  '-y, x, -z'
  9  'x, -y, -z'
  10  '-x, y, z'
  11  '-y, -x, -z'
  12  'y, x, z'
  13  '-x, y, -z'
  14  'x, -y, z'
  15  'y, x, -z'
  16  '-y, -x, z'
  17  'z, x, y'
  18  '-z, -x, -y'
  19  'z, -y, x'
  20  '-z, y, -x'
  21  'z, -x, -y'
  22  '-z, x, y'
  23  'z, y, -x'
  24  '-z, -y, x'
  25  '-z, x, -y'
  26  'z, -x, y'
  27  '-z, -y, -x'
  28  'z, y, x'
  29  '-z, -x, y'
  30  'z, x, -y'
  31  '-z, y, x'
  32  'z, -y, -x'
  33  'y, z, x'
  34  '-y, -z, -x'
  35  'x, z, -y'
  36  '-x, -z, y'
  37  '-y, z, -x'
  38  'y, -z, x'
  39  '-x, z, y'
  40  'x, -z, -y'
  41  '-y, -z, x'
  42  'y, z, -x'
  43  '-x, -z, -y'
  44  'x, z, y'
  45  'y, -z, -x'
  46  '-y, z, x'
  47  'x, -z, y'
  48  '-x, z, -y'
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  3  0.0  0.0  0.5  1.0
  Ge  Ge1  1  0.0  0.0  0.0  1.0
  As  As2  1  0.5  0.5  0.5  1.0

Sc Sc Sc Ge As
Sc Sc Sc Ge As 0 3 o o o 0 3 o + o 0 4 o o o 0 4 o o - 0 4 - o o 0 4 - o - 1 3 o o o 1 3 o o + 1 4 o o o 1 4 o - o 1 4 - o o 1 4 - - o 2 3 o o o 2 3 + o o 2 4 o o o 2 4 o o - 2 4 o - o 2 4 o - - 
Sc3GeAs is (Cubic) Perovskite structured and crystallizes in the trigonal R3m space group. Sc(1) is bonded in a distorted linear geometry to two equivalent Ge(1) and four equivalent As(1) atoms. There is one shorter (2.47 Å) and one longer (2.52 Å) Sc(1)-Ge(1) bond length. There are a spread of Sc(1)-As(1) bond distances ranging from 3.49-3.56 Å. Ge(1) is bonded to six equivalent Sc(1) atoms to form GeSc6 octahedra that share corners with six equivalent Ge(1)Sc6 octahedra and faces with eight equivalent As(1)Sc12 cuboctahedra. The corner-sharing octahedra are not tilted. As(1) is bonded to twelve equivalent Sc(1) atoms to form AsSc12 cuboctahedra that share corners with twelve equivalent As(1)Sc12 cuboctahedra, faces with six equivalent As(1)Sc12 cuboctahedra, and faces with eight equivalent Ge(1)Sc6 octahedra.