The compound described by MgTm4Co crystallizes in the cubic F-43m space group. Mg(1) is bonded to three equivalent Mg(1), three equivalent Tm(1), three equivalent Tm(2), and three equivalent Tm(3) atoms to form a mixture of face and corner-sharing MgTm9Mg3 cuboctahedra. There are three inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 3-coordinate geometry to three equivalent Mg(1), three equivalent Tm(3), and three equivalent Co(1) atoms. In the second Tm site, Tm(2) is bonded in a bent 150 degrees geometry to two equivalent Mg(1), four equivalent Tm(3), and two equivalent Co(1) atoms. In the third Tm site, Tm(3) is bonded in a 14-coordinate geometry to two equivalent Mg(1), two equivalent Tm(1), four equivalent Tm(2), four equivalent Tm(3), and two equivalent Co(1) atoms. Co(1) is bonded in a 6-coordinate geometry to three equivalent Tm(1), three equivalent Tm(2), and three equivalent Tm(3) atoms. is represented by the CIF file [CIF]
data_Tm4MgCo
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.412
_cell_length_b   9.412
_cell_length_c   9.412
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   589.506
_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
  Tm  Tm0  1  0.343  0.343  0.343  1.0
  Tm  Tm1  1  0.343  0.343  0.970  1.0
  Tm  Tm2  1  0.343  0.970  0.343  1.0
  Tm  Tm3  1  0.970  0.343  0.343  1.0
  Tm  Tm4  1  0.814  0.186  0.186  1.0
  Tm  Tm5  1  0.186  0.814  0.814  1.0
  Tm  Tm6  1  0.186  0.814  0.186  1.0
  Tm  Tm7  1  0.814  0.186  0.814  1.0
  Tm  Tm8  1  0.186  0.186  0.814  1.0
  Tm  Tm9  1  0.814  0.814  0.186  1.0
  Tm  Tm10  1  0.938  0.562  0.562  1.0
  Tm  Tm11  1  0.562  0.938  0.938  1.0
  Tm  Tm12  1  0.562  0.938  0.562  1.0
  Tm  Tm13  1  0.938  0.562  0.938  1.0
  Tm  Tm14  1  0.562  0.562  0.938  1.0
  Tm  Tm15  1  0.938  0.938  0.562  1.0
  Mg  Mg16  1  0.579  0.579  0.579  1.0
  Mg  Mg17  1  0.579  0.579  0.264  1.0
  Mg  Mg18  1  0.579  0.264  0.579  1.0
  Mg  Mg19  1  0.264  0.579  0.579  1.0
  Co  Co20  1  0.140  0.140  0.140  1.0
  Co  Co21  1  0.140  0.140  0.580  1.0
  Co  Co22  1  0.140  0.580  0.140  1.0
  Co  Co23  1  0.580  0.140  0.140  1.0
[/CIF]
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The compound described by MgTm4Co crystallizes in the cubic F-43m space group. Mg(1) is bonded to three equivalent Mg(1), three equivalent Tm(1), three equivalent Tm(2), and three equivalent Tm(3) atoms to form a mixture of face and corner-sharing MgTm9Mg3 cuboctahedra. There are three inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 3-coordinate geometry to three equivalent Mg(1), three equivalent Tm(3), and three equivalent Co(1) atoms. In the second Tm site, Tm(2) is bonded in a bent 150 degrees geometry to two equivalent Mg(1), four equivalent Tm(3), and two equivalent Co(1) atoms. In the third Tm site, Tm(3) is bonded in a 14-coordinate geometry to two equivalent Mg(1), two equivalent Tm(1), four equivalent Tm(2), four equivalent Tm(3), and two equivalent Co(1) atoms. Co(1) is bonded in a 6-coordinate geometry to three equivalent Tm(1), three equivalent Tm(2), and three equivalent Tm(3) atoms. is represented by the CIF file [CIF]
data_Tm4MgCo
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.412
_cell_length_b   9.412
_cell_length_c   9.412
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   589.506
_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
  Tm  Tm0  1  0.343  0.343  0.343  1.0
  Tm  Tm1  1  0.343  0.343  0.970  1.0
  Tm  Tm2  1  0.343  0.970  0.343  1.0
  Tm  Tm3  1  0.970  0.343  0.343  1.0
  Tm  Tm4  1  0.814  0.186  0.186  1.0
  Tm  Tm5  1  0.186  0.814  0.814  1.0
  Tm  Tm6  1  0.186  0.814  0.186  1.0
  Tm  Tm7  1  0.814  0.186  0.814  1.0
  Tm  Tm8  1  0.186  0.186  0.814  1.0
  Tm  Tm9  1  0.814  0.814  0.186  1.0
  Tm  Tm10  1  0.938  0.562  0.562  1.0
  Tm  Tm11  1  0.562  0.938  0.938  1.0
  Tm  Tm12  1  0.562  0.938  0.562  1.0
  Tm  Tm13  1  0.938  0.562  0.938  1.0
  Tm  Tm14  1  0.562  0.562  0.938  1.0
  Tm  Tm15  1  0.938  0.938  0.562  1.0
  Mg  Mg16  1  0.579  0.579  0.579  1.0
  Mg  Mg17  1  0.579  0.579  0.264  1.0
  Mg  Mg18  1  0.579  0.264  0.579  1.0
  Mg  Mg19  1  0.264  0.579  0.579  1.0
  Co  Co20  1  0.140  0.140  0.140  1.0
  Co  Co21  1  0.140  0.140  0.580  1.0
  Co  Co22  1  0.140  0.580  0.140  1.0
  Co  Co23  1  0.580  0.140  0.140  1.0
[/CIF]
.