The structure described by Mn3Ni3Sn2 crystallizes in the trigonal R3m space group. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 5-coordinate geometry to three equivalent Mn(3), one Ni(1), one Ni(3), three equivalent Ni(2), three equivalent Sn(1), and three equivalent Sn(2) atoms. In the second Mn site, Mn(2) is bonded in a 14-coordinate geometry to one Mn(3), one Ni(2), three equivalent Ni(1), three equivalent Ni(3), three equivalent Sn(1), and three equivalent Sn(2) atoms. In the third Mn site, Mn(3) is bonded in a 14-coordinate geometry to one Mn(2), three equivalent Mn(1), three equivalent Ni(2), three equivalent Ni(3), one Sn(2), and three equivalent Sn(1) atoms. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a distorted body-centered cubic geometry to one Mn(1), three equivalent Mn(2), one Sn(1), and three equivalent Sn(2) atoms. In the second Ni site, Ni(2) is bonded in a 11-coordinate geometry to one Mn(2), three equivalent Mn(1), three equivalent Mn(3), one Sn(1), and three equivalent Sn(2) atoms. In the third Ni site, Ni(3) is bonded in a 8-coordinate geometry to one Mn(1), three equivalent Mn(2), three equivalent Mn(3), one Sn(2), and three equivalent Sn(1) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 14-coordinate geometry to three equivalent Mn(1), three equivalent Mn(2), three equivalent Mn(3), one Ni(1), one Ni(2), and three equivalent Ni(3) atoms. In the second Sn site, Sn(2) is bonded in a 14-coordinate geometry to one Mn(3), three equivalent Mn(1), three equivalent Mn(2), one Ni(3), three equivalent Ni(1), and three equivalent Ni(2) atoms. is represented by the CIF card [CIF]
data_Mn3Ni3Sn2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.312
_cell_length_b   4.312
_cell_length_c   7.448
_cell_angle_alpha   73.173
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   113.020
_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  0.249  0.497  0.254  1.0
  Mn  Mn1  1  0.751  0.502  0.747  1.0
  Mn  Mn2  1  0.623  0.246  0.131  1.0
  Ni  Ni3  1  0.128  0.256  0.617  1.0
  Ni  Ni4  1  0.878  0.756  0.367  1.0
  Ni  Ni5  1  0.371  0.743  0.886  1.0
  Sn  Sn6  1  0.004  0.008  0.987  1.0
  Sn  Sn7  1  0.496  0.992  0.512  1.0
[/CIF]
.
The structure described by Mn3Ni3Sn2 crystallizes in the trigonal R3m space group. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 5-coordinate geometry to three equivalent Mn(3), one Ni(1), one Ni(3), three equivalent Ni(2), three equivalent Sn(1), and three equivalent Sn(2) atoms. In the second Mn site, Mn(2) is bonded in a 14-coordinate geometry to one Mn(3), one Ni(2), three equivalent Ni(1), three equivalent Ni(3), three equivalent Sn(1), and three equivalent Sn(2) atoms. In the third Mn site, Mn(3) is bonded in a 14-coordinate geometry to one Mn(2), three equivalent Mn(1), three equivalent Ni(2), three equivalent Ni(3), one Sn(2), and three equivalent Sn(1) atoms. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a distorted body-centered cubic geometry to one Mn(1), three equivalent Mn(2), one Sn(1), and three equivalent Sn(2) atoms. In the second Ni site, Ni(2) is bonded in a 11-coordinate geometry to one Mn(2), three equivalent Mn(1), three equivalent Mn(3), one Sn(1), and three equivalent Sn(2) atoms. In the third Ni site, Ni(3) is bonded in a 8-coordinate geometry to one Mn(1), three equivalent Mn(2), three equivalent Mn(3), one Sn(2), and three equivalent Sn(1) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 14-coordinate geometry to three equivalent Mn(1), three equivalent Mn(2), three equivalent Mn(3), one Ni(1), one Ni(2), and three equivalent Ni(3) atoms. In the second Sn site, Sn(2) is bonded in a 14-coordinate geometry to one Mn(3), three equivalent Mn(1), three equivalent Mn(2), one Ni(3), three equivalent Ni(1), and three equivalent Ni(2) atoms. is represented by the CIF card [CIF]
data_Mn3Ni3Sn2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.312
_cell_length_b   4.312
_cell_length_c   7.448
_cell_angle_alpha   73.173
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   113.020
_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  0.249  0.497  0.254  1.0
  Mn  Mn1  1  0.751  0.502  0.747  1.0
  Mn  Mn2  1  0.623  0.246  0.131  1.0
  Ni  Ni3  1  0.128  0.256  0.617  1.0
  Ni  Ni4  1  0.878  0.756  0.367  1.0
  Ni  Ni5  1  0.371  0.743  0.886  1.0
  Sn  Sn6  1  0.004  0.008  0.987  1.0
  Sn  Sn7  1  0.496  0.992  0.512  1.0
[/CIF]
.