The compound described by Mg6FeC crystallizes in the orthorhombic Amm2 space group. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 2-coordinate geometry to one Mg(2), two equivalent Mg(4), and two equivalent C(1) atoms. In the second Mg site, Mg(2) is bonded in a distorted q6 geometry to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(4), and four equivalent Mg(3) atoms. In the third Mg site, Mg(3) is bonded in a 3-coordinate geometry to one Mg(4), two equivalent Mg(2), two equivalent Fe(1), and one C(1) atom. In the fourth Mg site, Mg(4) is bonded in a 12-coordinate geometry to two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), four equivalent Mg(1), and two equivalent Fe(1) atoms. Fe(1) is bonded in a bent 120 degrees geometry to two equivalent Mg(4), four equivalent Mg(3), and two equivalent C(1) atoms. C(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Mg(3), four equivalent Mg(1), and two equivalent Fe(1) atoms. is represented by the CIF card [CIF]
data_Mg6FeC
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.887
_cell_length_b   6.887
_cell_length_c   3.170
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   94.156
_symmetry_Int_Tables_number   1
_cell_volume   149.972
_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  0.948  0.711  0.500  1.0
  Mg  Mg1  1  0.289  0.052  0.500  1.0
  Mg  Mg2  1  0.846  0.154  0.500  1.0
  Mg  Mg3  1  0.602  0.857  0.000  1.0
  Mg  Mg4  1  0.143  0.398  0.000  1.0
  Mg  Mg5  1  0.592  0.408  0.000  1.0
  Fe  Fe6  1  0.332  0.668  0.500  1.0
  C  C7  1  0.249  0.751  0.000  1.0
[/CIF]
.
The compound described by Mg6FeC crystallizes in the orthorhombic Amm2 space group. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 2-coordinate geometry to one Mg(2), two equivalent Mg(4), and two equivalent C(1) atoms. In the second Mg site, Mg(2) is bonded in a distorted q6 geometry to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(4), and four equivalent Mg(3) atoms. In the third Mg site, Mg(3) is bonded in a 3-coordinate geometry to one Mg(4), two equivalent Mg(2), two equivalent Fe(1), and one C(1) atom. In the fourth Mg site, Mg(4) is bonded in a 12-coordinate geometry to two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), four equivalent Mg(1), and two equivalent Fe(1) atoms. Fe(1) is bonded in a bent 120 degrees geometry to two equivalent Mg(4), four equivalent Mg(3), and two equivalent C(1) atoms. C(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Mg(3), four equivalent Mg(1), and two equivalent Fe(1) atoms. is represented by the CIF card [CIF]
data_Mg6FeC
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.887
_cell_length_b   6.887
_cell_length_c   3.170
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   94.156
_symmetry_Int_Tables_number   1
_cell_volume   149.972
_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  0.948  0.711  0.500  1.0
  Mg  Mg1  1  0.289  0.052  0.500  1.0
  Mg  Mg2  1  0.846  0.154  0.500  1.0
  Mg  Mg3  1  0.602  0.857  0.000  1.0
  Mg  Mg4  1  0.143  0.398  0.000  1.0
  Mg  Mg5  1  0.592  0.408  0.000  1.0
  Fe  Fe6  1  0.332  0.668  0.500  1.0
  C  C7  1  0.249  0.751  0.000  1.0
[/CIF]
.