The crystal structure described by TmMn6Sn4Ga2 crystallizes in the hexagonal P6/mmm space group. Tm(1) is bonded to six equivalent Ga(1) and two equivalent Sn(1) atoms to form distorted edge-sharing TmGa6Sn2 hexagonal bipyramids. Mn(1) is bonded in a 6-coordinate geometry to two equivalent Ga(1), two equivalent Sn(1), and two equivalent Sn(2) atoms. Ga(1) is bonded in a 9-coordinate geometry to three equivalent Tm(1) and six equivalent Mn(1) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 8-coordinate geometry to one Tm(1), six equivalent Mn(1), and one Sn(1) atom. In the second Sn site, Sn(2) is bonded in a 6-coordinate geometry to six equivalent Mn(1) atoms. is represented by the CIF file [CIF]
data_TmMn6(GaSn2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.360
_cell_length_b   5.360
_cell_length_c   8.780
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   218.408
_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
  Tm  Tm0  1  0.000  0.000  0.000  1.0
  Mn  Mn1  1  0.000  0.500  0.765  1.0
  Mn  Mn2  1  0.500  0.000  0.235  1.0
  Mn  Mn3  1  0.500  0.500  0.235  1.0
  Mn  Mn4  1  0.500  0.500  0.765  1.0
  Mn  Mn5  1  0.500  0.000  0.765  1.0
  Mn  Mn6  1  0.000  0.500  0.235  1.0
  Ga  Ga7  1  0.333  0.667  0.000  1.0
  Ga  Ga8  1  0.667  0.333  0.000  1.0
  Sn  Sn9  1  0.000  0.000  0.669  1.0
  Sn  Sn10  1  0.000  0.000  0.331  1.0
  Sn  Sn11  1  0.667  0.333  0.500  1.0
  Sn  Sn12  1  0.333  0.667  0.500  1.0
[/CIF]
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The crystal structure described by TmMn6Sn4Ga2 crystallizes in the hexagonal P6/mmm space group. Tm(1) is bonded to six equivalent Ga(1) and two equivalent Sn(1) atoms to form distorted edge-sharing TmGa6Sn2 hexagonal bipyramids. Mn(1) is bonded in a 6-coordinate geometry to two equivalent Ga(1), two equivalent Sn(1), and two equivalent Sn(2) atoms. Ga(1) is bonded in a 9-coordinate geometry to three equivalent Tm(1) and six equivalent Mn(1) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 8-coordinate geometry to one Tm(1), six equivalent Mn(1), and one Sn(1) atom. In the second Sn site, Sn(2) is bonded in a 6-coordinate geometry to six equivalent Mn(1) atoms. is represented by the CIF file [CIF]
data_TmMn6(GaSn2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.360
_cell_length_b   5.360
_cell_length_c   8.780
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   218.408
_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
  Tm  Tm0  1  0.000  0.000  0.000  1.0
  Mn  Mn1  1  0.000  0.500  0.765  1.0
  Mn  Mn2  1  0.500  0.000  0.235  1.0
  Mn  Mn3  1  0.500  0.500  0.235  1.0
  Mn  Mn4  1  0.500  0.500  0.765  1.0
  Mn  Mn5  1  0.500  0.000  0.765  1.0
  Mn  Mn6  1  0.000  0.500  0.235  1.0
  Ga  Ga7  1  0.333  0.667  0.000  1.0
  Ga  Ga8  1  0.667  0.333  0.000  1.0
  Sn  Sn9  1  0.000  0.000  0.669  1.0
  Sn  Sn10  1  0.000  0.000  0.331  1.0
  Sn  Sn11  1  0.667  0.333  0.500  1.0
  Sn  Sn12  1  0.333  0.667  0.500  1.0
[/CIF]
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