The material described by Mg6GaC 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 two equivalent Mg(4), two equivalent Ga(1), and two equivalent C(1) atoms. In the second Mg site, Mg(2) is bonded in a 2-coordinate geometry to two equivalent Mg(4) and two equivalent Ga(1) atoms. In the third Mg site, Mg(3) is bonded in a distorted single-bond geometry to two equivalent Mg(4), two equivalent Ga(1), and one C(1) atom. In the fourth Mg site, Mg(4) is bonded in a 10-coordinate geometry to two equivalent Mg(2), four equivalent Mg(1), and four equivalent Mg(3) atoms. Ga(1) is bonded in a 10-coordinate geometry to two equivalent Mg(2), four equivalent Mg(1), and four equivalent Mg(3) atoms. C(1) is bonded in a 6-coordinate geometry to two equivalent Mg(3) and four equivalent Mg(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mg6GaC
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.659
_cell_length_b   5.933
_cell_length_c   6.425
_cell_angle_alpha   117.497
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   157.563
_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
  C  C0  1  0.500  0.569  0.137  1.0
  Ga  Ga1  1  0.000  0.869  0.738  1.0
  Mg  Mg2  1  1.000  0.378  0.208  1.0
  Mg  Mg3  1  0.000  0.831  0.208  1.0
  Mg  Mg4  1  0.000  0.336  0.672  1.0
  Mg  Mg5  1  0.500  0.171  0.848  1.0
  Mg  Mg6  1  0.500  0.677  0.848  1.0
  Mg  Mg7  1  0.500  0.170  0.340  1.0
[/CIF]
.
The material described by Mg6GaC 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 two equivalent Mg(4), two equivalent Ga(1), and two equivalent C(1) atoms. In the second Mg site, Mg(2) is bonded in a 2-coordinate geometry to two equivalent Mg(4) and two equivalent Ga(1) atoms. In the third Mg site, Mg(3) is bonded in a distorted single-bond geometry to two equivalent Mg(4), two equivalent Ga(1), and one C(1) atom. In the fourth Mg site, Mg(4) is bonded in a 10-coordinate geometry to two equivalent Mg(2), four equivalent Mg(1), and four equivalent Mg(3) atoms. Ga(1) is bonded in a 10-coordinate geometry to two equivalent Mg(2), four equivalent Mg(1), and four equivalent Mg(3) atoms. C(1) is bonded in a 6-coordinate geometry to two equivalent Mg(3) and four equivalent Mg(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mg6GaC
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.659
_cell_length_b   5.933
_cell_length_c   6.425
_cell_angle_alpha   117.497
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   157.563
_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
  C  C0  1  0.500  0.569  0.137  1.0
  Ga  Ga1  1  0.000  0.869  0.738  1.0
  Mg  Mg2  1  1.000  0.378  0.208  1.0
  Mg  Mg3  1  0.000  0.831  0.208  1.0
  Mg  Mg4  1  0.000  0.336  0.672  1.0
  Mg  Mg5  1  0.500  0.171  0.848  1.0
  Mg  Mg6  1  0.500  0.677  0.848  1.0
  Mg  Mg7  1  0.500  0.170  0.340  1.0
[/CIF]
.