The crystal structure described by CaMg5 is Bergman Structure: Mg32(Al,Zn)49 Bergman-derived structured and crystallizes in the monoclinic Cm space group. Ca(1) is bonded to two equivalent Ca(1), one Mg(4), two equivalent Mg(1), two equivalent Mg(3), two equivalent Mg(5), and three equivalent Mg(2) atoms to form CaCa2Mg10 cuboctahedra that share corners with six equivalent Ca(1)Ca2Mg10 cuboctahedra, corners with six equivalent Mg(3)Ca2Mg10 cuboctahedra, edges with two equivalent Mg(2)Ca3Mg9 cuboctahedra, edges with three equivalent Mg(3)Ca2Mg10 cuboctahedra, faces with two equivalent Ca(1)Ca2Mg10 cuboctahedra, faces with three equivalent Mg(3)Ca2Mg10 cuboctahedra, and faces with five equivalent Mg(2)Ca3Mg9 cuboctahedra. There are five inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 11-coordinate geometry to two equivalent Ca(1), one Mg(3), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(4), and two equivalent Mg(5) atoms. In the second Mg site, Mg(2) is bonded to three equivalent Ca(1), one Mg(5), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), and two equivalent Mg(4) atoms to form MgCa3Mg9 cuboctahedra that share corners with six equivalent Mg(2)Ca3Mg9 cuboctahedra, edges with two equivalent Ca(1)Ca2Mg10 cuboctahedra, edges with six equivalent Mg(3)Ca2Mg10 cuboctahedra, faces with two equivalent Mg(2)Ca3Mg9 cuboctahedra, faces with three equivalent Mg(3)Ca2Mg10 cuboctahedra, and faces with five equivalent Ca(1)Ca2Mg10 cuboctahedra. In the third Mg site, Mg(3) is bonded to two equivalent Ca(1), one Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(5), and three equivalent Mg(4) atoms to form distorted MgCa2Mg10 cuboctahedra that share corners with six equivalent Ca(1)Ca2Mg10 cuboctahedra, corners with six equivalent Mg(3)Ca2Mg10 cuboctahedra, edges with three equivalent Ca(1)Ca2Mg10 cuboctahedra, edges with six equivalent Mg(2)Ca3Mg9 cuboctahedra, faces with two equivalent Mg(3)Ca2Mg10 cuboctahedra, faces with three equivalent Ca(1)Ca2Mg10 cuboctahedra, and faces with three equivalent Mg(2)Ca3Mg9 cuboctahedra. In the fourth Mg site, Mg(4) is bonded in a 12-coordinate geometry to one Ca(1), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(4), two equivalent Mg(5), and three equivalent Mg(3) atoms. In the fifth Mg site, Mg(5) is bonded in a 11-coordinate geometry to two equivalent Ca(1), one Mg(2), two equivalent Mg(1), two equivalent Mg(3), two equivalent Mg(4), and two equivalent Mg(5) atoms. is represented by the CIF card [CIF]
data_CaMg5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.565
_cell_length_b   6.565
_cell_length_c   7.580
_cell_angle_alpha   76.209
_cell_angle_beta   76.209
_cell_angle_gamma   29.172
_symmetry_Int_Tables_number   1
_cell_volume   154.347
_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  0.613  0.613  0.272  1.0
  Mg  Mg1  1  0.992  0.992  0.991  1.0
  Mg  Mg2  1  0.338  0.338  0.338  1.0
  Mg  Mg3  1  0.937  0.937  0.619  1.0
  Mg  Mg4  1  0.667  0.667  0.678  1.0
  Mg  Mg5  1  0.286  0.286  0.935  1.0
[/CIF]
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The crystal structure described by CaMg5 is Bergman Structure: Mg32(Al,Zn)49 Bergman-derived structured and crystallizes in the monoclinic Cm space group. Ca(1) is bonded to two equivalent Ca(1), one Mg(4), two equivalent Mg(1), two equivalent Mg(3), two equivalent Mg(5), and three equivalent Mg(2) atoms to form CaCa2Mg10 cuboctahedra that share corners with six equivalent Ca(1)Ca2Mg10 cuboctahedra, corners with six equivalent Mg(3)Ca2Mg10 cuboctahedra, edges with two equivalent Mg(2)Ca3Mg9 cuboctahedra, edges with three equivalent Mg(3)Ca2Mg10 cuboctahedra, faces with two equivalent Ca(1)Ca2Mg10 cuboctahedra, faces with three equivalent Mg(3)Ca2Mg10 cuboctahedra, and faces with five equivalent Mg(2)Ca3Mg9 cuboctahedra. There are five inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 11-coordinate geometry to two equivalent Ca(1), one Mg(3), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(4), and two equivalent Mg(5) atoms. In the second Mg site, Mg(2) is bonded to three equivalent Ca(1), one Mg(5), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), and two equivalent Mg(4) atoms to form MgCa3Mg9 cuboctahedra that share corners with six equivalent Mg(2)Ca3Mg9 cuboctahedra, edges with two equivalent Ca(1)Ca2Mg10 cuboctahedra, edges with six equivalent Mg(3)Ca2Mg10 cuboctahedra, faces with two equivalent Mg(2)Ca3Mg9 cuboctahedra, faces with three equivalent Mg(3)Ca2Mg10 cuboctahedra, and faces with five equivalent Ca(1)Ca2Mg10 cuboctahedra. In the third Mg site, Mg(3) is bonded to two equivalent Ca(1), one Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(5), and three equivalent Mg(4) atoms to form distorted MgCa2Mg10 cuboctahedra that share corners with six equivalent Ca(1)Ca2Mg10 cuboctahedra, corners with six equivalent Mg(3)Ca2Mg10 cuboctahedra, edges with three equivalent Ca(1)Ca2Mg10 cuboctahedra, edges with six equivalent Mg(2)Ca3Mg9 cuboctahedra, faces with two equivalent Mg(3)Ca2Mg10 cuboctahedra, faces with three equivalent Ca(1)Ca2Mg10 cuboctahedra, and faces with three equivalent Mg(2)Ca3Mg9 cuboctahedra. In the fourth Mg site, Mg(4) is bonded in a 12-coordinate geometry to one Ca(1), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(4), two equivalent Mg(5), and three equivalent Mg(3) atoms. In the fifth Mg site, Mg(5) is bonded in a 11-coordinate geometry to two equivalent Ca(1), one Mg(2), two equivalent Mg(1), two equivalent Mg(3), two equivalent Mg(4), and two equivalent Mg(5) atoms. is represented by the CIF card [CIF]
data_CaMg5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.565
_cell_length_b   6.565
_cell_length_c   7.580
_cell_angle_alpha   76.209
_cell_angle_beta   76.209
_cell_angle_gamma   29.172
_symmetry_Int_Tables_number   1
_cell_volume   154.347
_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  0.613  0.613  0.272  1.0
  Mg  Mg1  1  0.992  0.992  0.991  1.0
  Mg  Mg2  1  0.338  0.338  0.338  1.0
  Mg  Mg3  1  0.937  0.937  0.619  1.0
  Mg  Mg4  1  0.667  0.667  0.678  1.0
  Mg  Mg5  1  0.286  0.286  0.935  1.0
[/CIF]
.