The structure described by Mn3Si crystallizes in the tetragonal P4/mmm space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 4-coordinate geometry to four equivalent Mn(2) and four equivalent Si(1) atoms. In the second Mn site, Mn(2) is bonded in a 14-coordinate geometry to four equivalent Mn(2), eight equivalent Mn(1), and two equivalent Si(1) atoms. Si(1) is bonded in a body-centered cubic geometry to two equivalent Mn(2) and eight equivalent Mn(1) atoms. is represented by the CIF card [CIF]
data_Mn3Si
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.791
_cell_length_b   2.791
_cell_length_c   5.684
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   44.286
_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
  Mn  Mn0  1  0.000  0.000  0.747  1.0
  Mn  Mn1  1  0.000  0.000  0.253  1.0
  Mn  Mn2  1  0.500  0.500  0.000  1.0
  Si  Si3  1  0.500  0.500  0.500  1.0
[/CIF]
.
The structure described by Mn3Si crystallizes in the tetragonal P4/mmm space group. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 4-coordinate geometry to four equivalent Mn(2) and four equivalent Si(1) atoms. In the second Mn site, Mn(2) is bonded in a 14-coordinate geometry to four equivalent Mn(2), eight equivalent Mn(1), and two equivalent Si(1) atoms. Si(1) is bonded in a body-centered cubic geometry to two equivalent Mn(2) and eight equivalent Mn(1) atoms. is represented by the CIF card [CIF]
data_Mn3Si
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.791
_cell_length_b   2.791
_cell_length_c   5.684
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   44.286
_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
  Mn  Mn0  1  0.000  0.000  0.747  1.0
  Mn  Mn1  1  0.000  0.000  0.253  1.0
  Mn  Mn2  1  0.500  0.500  0.000  1.0
  Si  Si3  1  0.500  0.500  0.500  1.0
[/CIF]
.