The structure described by CaMg6C crystallizes in the orthorhombic Amm2 space group. Ca(1) is bonded to two equivalent Ca(1), two equivalent Mg(3), four equivalent Mg(2), and four equivalent Mg(4) atoms to form a mixture of distorted face, corner, and edge-sharing CaCa2Mg10 cuboctahedra. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a single-bond geometry to two equivalent Mg(3) and one C(1) atom. In the second Mg site, Mg(2) is bonded in a water-like geometry to two equivalent Ca(1) and two equivalent C(1) atoms. In the third Mg site, Mg(3) is bonded in a 8-coordinate geometry to two equivalent Ca(1), two equivalent Mg(4), and four equivalent Mg(1) atoms. In the fourth Mg site, Mg(4) is bonded in a 8-coordinate geometry to four equivalent Ca(1), two equivalent Mg(3), and two equivalent Mg(4) atoms. C(1) is bonded in a 6-coordinate geometry to two equivalent Mg(1) and four equivalent Mg(2) atoms. is represented by the CIF card [CIF]
data_CaMg6C
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.330
_cell_length_b   10.330
_cell_length_c   3.517
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   148.006
_symmetry_Int_Tables_number   1
_cell_volume   198.854
_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
  Ca  Ca0  1  0.788  0.212  0.500  1.0
  Mg  Mg1  1  0.294  0.215  0.500  1.0
  Mg  Mg2  1  0.785  0.706  0.500  1.0
  Mg  Mg3  1  0.189  0.348  0.000  1.0
  Mg  Mg4  1  0.652  0.811  0.000  1.0
  Mg  Mg5  1  0.648  0.352  0.000  1.0
  Mg  Mg6  1  0.195  0.805  0.000  1.0
  C  C7  1  0.449  0.551  0.500  1.0
[/CIF]
.
The structure described by CaMg6C crystallizes in the orthorhombic Amm2 space group. Ca(1) is bonded to two equivalent Ca(1), two equivalent Mg(3), four equivalent Mg(2), and four equivalent Mg(4) atoms to form a mixture of distorted face, corner, and edge-sharing CaCa2Mg10 cuboctahedra. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a single-bond geometry to two equivalent Mg(3) and one C(1) atom. In the second Mg site, Mg(2) is bonded in a water-like geometry to two equivalent Ca(1) and two equivalent C(1) atoms. In the third Mg site, Mg(3) is bonded in a 8-coordinate geometry to two equivalent Ca(1), two equivalent Mg(4), and four equivalent Mg(1) atoms. In the fourth Mg site, Mg(4) is bonded in a 8-coordinate geometry to four equivalent Ca(1), two equivalent Mg(3), and two equivalent Mg(4) atoms. C(1) is bonded in a 6-coordinate geometry to two equivalent Mg(1) and four equivalent Mg(2) atoms. is represented by the CIF card [CIF]
data_CaMg6C
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.330
_cell_length_b   10.330
_cell_length_c   3.517
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   148.006
_symmetry_Int_Tables_number   1
_cell_volume   198.854
_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
  Ca  Ca0  1  0.788  0.212  0.500  1.0
  Mg  Mg1  1  0.294  0.215  0.500  1.0
  Mg  Mg2  1  0.785  0.706  0.500  1.0
  Mg  Mg3  1  0.189  0.348  0.000  1.0
  Mg  Mg4  1  0.652  0.811  0.000  1.0
  Mg  Mg5  1  0.648  0.352  0.000  1.0
  Mg  Mg6  1  0.195  0.805  0.000  1.0
  C  C7  1  0.449  0.551  0.500  1.0
[/CIF]
.