data_MgScSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.8
_cell_length_b   4.8
_cell_length_c   4.8
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgScSn
_chemical_formula_sum   'Mg1 Sc1 Sn1'
_cell_volume   78.38
_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
  Mg  Mg0  1  0.0  0.0  0.0  1.0
  Sc  Sc1  1  0.4  0.4  0.4  1.0
  Sn  Sn2  1  0.09  0.09  0.09  1.0

data_MgScSn
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.8
_cell_length_b   4.8
_cell_length_c   11.77
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   MgScSn
_chemical_formula_sum   'Mg3 Sc3 Sn3'
_cell_volume   235.13
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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
  Mg  Mg0  3  0.0  0.0  0.0  1.0
  Sc  Sc1  3  0.0  0.0  0.6  1.0
  Sn  Sn2  3  0.0  0.0  0.91  1.0

Mg Sc Sn
Mg Sc Sn 0 2 o o o 0 1 o o - 0 1 o - o 0 1 - o o 1 2 o o + 1 2 o + o 1 2 + o o 
ScMgSn crystallizes in the trigonal R3m space group. Mg(1) is bonded in a single-bond geometry to three equivalent Sc(1) and one Sn(1) atom. All Mg(1)-Sc(1) bond lengths are 2.87 Å. The Mg(1)-Sn(1) bond length is 1.12 Å. Sc(1) is bonded to three equivalent Mg(1) and four equivalent Sn(1) atoms to form a mixture of distorted corner and edge-sharing ScMg3Sn4 hexagonal pyramids. There are three shorter (2.80 Å) and one longer (3.55 Å) Sc(1)-Sn(1) bond length. Sn(1) is bonded in a single-bond geometry to one Mg(1) and four equivalent Sc(1) atoms.