The compound described by Mg6MnC crystallizes in the orthorhombic Amm2 space group. There are six inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 11-coordinate geometry to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mn(1), and one C(1) atom. In the second Mg site, Mg(2) is bonded in a 12-coordinate geometry to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mn(1), and two equivalent C(1) atoms. In the third Mg site, Mg(2) is bonded in a 12-coordinate geometry to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mn(1), and two equivalent C(1) atoms. In the fourth Mg site, Mg(3) is bonded to two equivalent Mg(4); four Mg(1,1); four Mg(2,2); and two equivalent Mn(1) atoms to form a mixture of distorted face and corner-sharing MgMg10Mn2 cuboctahedra. In the fifth Mg site, Mg(4) is bonded in a distorted bent 120 degrees geometry to two equivalent Mg(3); four equivalent Mg(1); four Mg(2,2); and two equivalent C(1) atoms. In the sixth Mg site, Mg(1) is bonded in a 11-coordinate geometry to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mn(1), and one C(1) atom. Mn(1) is bonded in a 10-coordinate geometry to two equivalent Mg(3); four Mg(1,1); and four Mg(2,2) atoms. C(1) is bonded in a 2-coordinate geometry to two equivalent Mg(1), two equivalent Mg(4), and four equivalent Mg(2) atoms. is represented by the CIF file [CIF]
data_Mg6MnC
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.004
_cell_length_b   6.004
_cell_length_c   4.659
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   118.440
_symmetry_Int_Tables_number   1
_cell_volume   147.715
_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  0.664  0.836  0.000  1.0
  Mg  Mg1  1  0.164  0.336  0.000  1.0
  Mg  Mg2  1  0.847  0.668  0.500  1.0
  Mg  Mg3  1  0.332  0.153  0.500  1.0
  Mg  Mg4  1  0.828  0.172  0.500  1.0
  Mg  Mg5  1  0.324  0.676  0.500  1.0
  Mn  Mn6  1  0.667  0.333  0.000  1.0
  C  C7  1  0.174  0.826  0.000  1.0
[/CIF]
.
The compound described by Mg6MnC crystallizes in the orthorhombic Amm2 space group. There are six inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 11-coordinate geometry to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mn(1), and one C(1) atom. In the second Mg site, Mg(2) is bonded in a 12-coordinate geometry to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mn(1), and two equivalent C(1) atoms. In the third Mg site, Mg(2) is bonded in a 12-coordinate geometry to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mn(1), and two equivalent C(1) atoms. In the fourth Mg site, Mg(3) is bonded to two equivalent Mg(4); four Mg(1,1); four Mg(2,2); and two equivalent Mn(1) atoms to form a mixture of distorted face and corner-sharing MgMg10Mn2 cuboctahedra. In the fifth Mg site, Mg(4) is bonded in a distorted bent 120 degrees geometry to two equivalent Mg(3); four equivalent Mg(1); four Mg(2,2); and two equivalent C(1) atoms. In the sixth Mg site, Mg(1) is bonded in a 11-coordinate geometry to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mn(1), and one C(1) atom. Mn(1) is bonded in a 10-coordinate geometry to two equivalent Mg(3); four Mg(1,1); and four Mg(2,2) atoms. C(1) is bonded in a 2-coordinate geometry to two equivalent Mg(1), two equivalent Mg(4), and four equivalent Mg(2) atoms. is represented by the CIF file [CIF]
data_Mg6MnC
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.004
_cell_length_b   6.004
_cell_length_c   4.659
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   118.440
_symmetry_Int_Tables_number   1
_cell_volume   147.715
_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  0.664  0.836  0.000  1.0
  Mg  Mg1  1  0.164  0.336  0.000  1.0
  Mg  Mg2  1  0.847  0.668  0.500  1.0
  Mg  Mg3  1  0.332  0.153  0.500  1.0
  Mg  Mg4  1  0.828  0.172  0.500  1.0
  Mg  Mg5  1  0.324  0.676  0.500  1.0
  Mn  Mn6  1  0.667  0.333  0.000  1.0
  C  C7  1  0.174  0.826  0.000  1.0
[/CIF]
.