The material structure described by SrMg14Ce crystallizes in the hexagonal P-6m2 space group. Sr(1) is bonded to six Mg(2,2) and six equivalent Mg(3) atoms to form SrMg12 cuboctahedra that share corners with six equivalent Sr(1)Mg12 cuboctahedra; corners with twelve Mg(1,1)Ce2Mg10 cuboctahedra; edges with six Mg(2,2)Sr2Mg10 cuboctahedra; faces with two equivalent Ce(1)Mg12 cuboctahedra; faces with six equivalent Mg(4)Mg12 cuboctahedra; and faces with six Mg(2,2)Sr2Mg10 cuboctahedra. There are six inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Mg(4); four Mg(1,1); four equivalent Mg(3); and two equivalent Ce(1) atoms to form distorted MgCe2Mg10 cuboctahedra that share corners with four equivalent Sr(1)Mg12 cuboctahedra; corners with six equivalent Mg(1)Ce2Mg10 cuboctahedra; corners with eight Mg(2,2)Sr2Mg10 cuboctahedra; edges with two equivalent Ce(1)Mg12 cuboctahedra; edges with four Mg(1,1)Ce2Mg10 cuboctahedra; edges with four equivalent Mg(4)Mg12 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with two equivalent Mg(2)Sr2Mg10 cuboctahedra; faces with two equivalent Ce(1)Mg12 cuboctahedra; and faces with four Mg(1,1)Ce2Mg10 cuboctahedra. In the second Mg site, Mg(2) is bonded to two equivalent Sr(1); two equivalent Mg(4); four Mg(2,2); and four equivalent Mg(3) atoms to form distorted MgSr2Mg10 cuboctahedra that share corners with four equivalent Ce(1)Mg12 cuboctahedra; corners with six equivalent Mg(2)Sr2Mg10 cuboctahedra; corners with eight Mg(1,1)Ce2Mg10 cuboctahedra; edges with two equivalent Sr(1)Mg12 cuboctahedra; edges with four equivalent Mg(4)Mg12 cuboctahedra; edges with four Mg(2,2)Sr2Mg10 cuboctahedra; faces with two equivalent Sr(1)Mg12 cuboctahedra; faces with two equivalent Mg(1)Ce2Mg10 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; and faces with four Mg(2,2)Sr2Mg10 cuboctahedra. In the third Mg site, Mg(1) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(3), and two equivalent Ce(1) atoms to form distorted MgCe2Mg10 cuboctahedra that share corners with four equivalent Sr(1)Mg12 cuboctahedra, corners with six equivalent Mg(1)Ce2Mg10 cuboctahedra, corners with eight equivalent Mg(2)Sr2Mg10 cuboctahedra, edges with two equivalent Ce(1)Mg12 cuboctahedra, edges with four equivalent Mg(1)Ce2Mg10 cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, faces with two equivalent Mg(2)Sr2Mg10 cuboctahedra, faces with two equivalent Ce(1)Mg12 cuboctahedra, and faces with four equivalent Mg(1)Ce2Mg10 cuboctahedra. In the fourth Mg site, Mg(2) is bonded to two equivalent Sr(1), two equivalent Mg(4), four equivalent Mg(2), and four equivalent Mg(3) atoms to form distorted MgSr2Mg10 cuboctahedra that share corners with four equivalent Ce(1)Mg12 cuboctahedra, corners with six equivalent Mg(2)Sr2Mg10 cuboctahedra, corners with eight equivalent Mg(1)Ce2Mg10 cuboctahedra, edges with two equivalent Sr(1)Mg12 cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, edges with four equivalent Mg(2)Sr2Mg10 cuboctahedra, faces with two equivalent Sr(1)Mg12 cuboctahedra, faces with two equivalent Mg(1)Ce2Mg10 cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, and faces with four equivalent Mg(2)Sr2Mg10 cuboctahedra. In the fifth Mg site, Mg(3) is bonded in a 12-coordinate geometry to one Sr(1); two Mg(1,1); two Mg(2,2); two equivalent Mg(4); four equivalent Mg(3); and one Ce(1) atom. In the sixth Mg site, Mg(4) is bonded to three Mg(1,1); three Mg(2,2); and six equivalent Mg(3) atoms to form MgMg12 cuboctahedra that share corners with six equivalent Mg(4)Mg12 cuboctahedra; edges with six Mg(1,1)Ce2Mg10 cuboctahedra; edges with six Mg(2,2)Sr2Mg10 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with three equivalent Sr(1)Mg12 cuboctahedra; faces with three Mg(1,1)Ce2Mg10 cuboctahedra; faces with three Mg(2,2)Sr2Mg10 cuboctahedra; and faces with three equivalent Ce(1)Mg12 cuboctahedra. Ce(1) is bonded to six Mg(1,1) and six equivalent Mg(3) atoms to form CeMg12 cuboctahedra that share corners with six equivalent Ce(1)Mg12 cuboctahedra; corners with twelve Mg(2,2)Sr2Mg10 cuboctahedra; edges with six Mg(1,1)Ce2Mg10 cuboctahedra; faces with two equivalent Sr(1)Mg12 cuboctahedra; faces with six Mg(1,1)Ce2Mg10 cuboctahedra; and faces with six equivalent Mg(4)Mg12 cuboctahedra. is represented by the CIF file [CIF]
data_SrCeMg14
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.718
_cell_length_b   6.718
_cell_length_c   10.517
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   411.101
_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
  Sr  Sr0  1  0.167  0.333  0.625  1.0
  Ce  Ce1  1  0.167  0.333  0.125  1.0
  Mg  Mg2  1  0.176  0.838  0.125  1.0
  Mg  Mg3  1  0.177  0.839  0.625  1.0
  Mg  Mg4  1  0.662  0.324  0.125  1.0
  Mg  Mg5  1  0.661  0.323  0.625  1.0
  Mg  Mg6  1  0.662  0.838  0.125  1.0
  Mg  Mg7  1  0.661  0.839  0.625  1.0
  Mg  Mg8  1  0.341  0.159  0.370  1.0
  Mg  Mg9  1  0.341  0.159  0.880  1.0
  Mg  Mg10  1  0.341  0.682  0.370  1.0
  Mg  Mg11  1  0.341  0.682  0.880  1.0
  Mg  Mg12  1  0.818  0.159  0.370  1.0
  Mg  Mg13  1  0.818  0.159  0.880  1.0
  Mg  Mg14  1  0.833  0.667  0.373  1.0
  Mg  Mg15  1  0.833  0.667  0.877  1.0
[/CIF]
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The material structure described by SrMg14Ce crystallizes in the hexagonal P-6m2 space group. Sr(1) is bonded to six Mg(2,2) and six equivalent Mg(3) atoms to form SrMg12 cuboctahedra that share corners with six equivalent Sr(1)Mg12 cuboctahedra; corners with twelve Mg(1,1)Ce2Mg10 cuboctahedra; edges with six Mg(2,2)Sr2Mg10 cuboctahedra; faces with two equivalent Ce(1)Mg12 cuboctahedra; faces with six equivalent Mg(4)Mg12 cuboctahedra; and faces with six Mg(2,2)Sr2Mg10 cuboctahedra. There are six inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Mg(4); four Mg(1,1); four equivalent Mg(3); and two equivalent Ce(1) atoms to form distorted MgCe2Mg10 cuboctahedra that share corners with four equivalent Sr(1)Mg12 cuboctahedra; corners with six equivalent Mg(1)Ce2Mg10 cuboctahedra; corners with eight Mg(2,2)Sr2Mg10 cuboctahedra; edges with two equivalent Ce(1)Mg12 cuboctahedra; edges with four Mg(1,1)Ce2Mg10 cuboctahedra; edges with four equivalent Mg(4)Mg12 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with two equivalent Mg(2)Sr2Mg10 cuboctahedra; faces with two equivalent Ce(1)Mg12 cuboctahedra; and faces with four Mg(1,1)Ce2Mg10 cuboctahedra. In the second Mg site, Mg(2) is bonded to two equivalent Sr(1); two equivalent Mg(4); four Mg(2,2); and four equivalent Mg(3) atoms to form distorted MgSr2Mg10 cuboctahedra that share corners with four equivalent Ce(1)Mg12 cuboctahedra; corners with six equivalent Mg(2)Sr2Mg10 cuboctahedra; corners with eight Mg(1,1)Ce2Mg10 cuboctahedra; edges with two equivalent Sr(1)Mg12 cuboctahedra; edges with four equivalent Mg(4)Mg12 cuboctahedra; edges with four Mg(2,2)Sr2Mg10 cuboctahedra; faces with two equivalent Sr(1)Mg12 cuboctahedra; faces with two equivalent Mg(1)Ce2Mg10 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; and faces with four Mg(2,2)Sr2Mg10 cuboctahedra. In the third Mg site, Mg(1) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(3), and two equivalent Ce(1) atoms to form distorted MgCe2Mg10 cuboctahedra that share corners with four equivalent Sr(1)Mg12 cuboctahedra, corners with six equivalent Mg(1)Ce2Mg10 cuboctahedra, corners with eight equivalent Mg(2)Sr2Mg10 cuboctahedra, edges with two equivalent Ce(1)Mg12 cuboctahedra, edges with four equivalent Mg(1)Ce2Mg10 cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, faces with two equivalent Mg(2)Sr2Mg10 cuboctahedra, faces with two equivalent Ce(1)Mg12 cuboctahedra, and faces with four equivalent Mg(1)Ce2Mg10 cuboctahedra. In the fourth Mg site, Mg(2) is bonded to two equivalent Sr(1), two equivalent Mg(4), four equivalent Mg(2), and four equivalent Mg(3) atoms to form distorted MgSr2Mg10 cuboctahedra that share corners with four equivalent Ce(1)Mg12 cuboctahedra, corners with six equivalent Mg(2)Sr2Mg10 cuboctahedra, corners with eight equivalent Mg(1)Ce2Mg10 cuboctahedra, edges with two equivalent Sr(1)Mg12 cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, edges with four equivalent Mg(2)Sr2Mg10 cuboctahedra, faces with two equivalent Sr(1)Mg12 cuboctahedra, faces with two equivalent Mg(1)Ce2Mg10 cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, and faces with four equivalent Mg(2)Sr2Mg10 cuboctahedra. In the fifth Mg site, Mg(3) is bonded in a 12-coordinate geometry to one Sr(1); two Mg(1,1); two Mg(2,2); two equivalent Mg(4); four equivalent Mg(3); and one Ce(1) atom. In the sixth Mg site, Mg(4) is bonded to three Mg(1,1); three Mg(2,2); and six equivalent Mg(3) atoms to form MgMg12 cuboctahedra that share corners with six equivalent Mg(4)Mg12 cuboctahedra; edges with six Mg(1,1)Ce2Mg10 cuboctahedra; edges with six Mg(2,2)Sr2Mg10 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with three equivalent Sr(1)Mg12 cuboctahedra; faces with three Mg(1,1)Ce2Mg10 cuboctahedra; faces with three Mg(2,2)Sr2Mg10 cuboctahedra; and faces with three equivalent Ce(1)Mg12 cuboctahedra. Ce(1) is bonded to six Mg(1,1) and six equivalent Mg(3) atoms to form CeMg12 cuboctahedra that share corners with six equivalent Ce(1)Mg12 cuboctahedra; corners with twelve Mg(2,2)Sr2Mg10 cuboctahedra; edges with six Mg(1,1)Ce2Mg10 cuboctahedra; faces with two equivalent Sr(1)Mg12 cuboctahedra; faces with six Mg(1,1)Ce2Mg10 cuboctahedra; and faces with six equivalent Mg(4)Mg12 cuboctahedra. is represented by the CIF file [CIF]
data_SrCeMg14
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.718
_cell_length_b   6.718
_cell_length_c   10.517
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   411.101
_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
  Sr  Sr0  1  0.167  0.333  0.625  1.0
  Ce  Ce1  1  0.167  0.333  0.125  1.0
  Mg  Mg2  1  0.176  0.838  0.125  1.0
  Mg  Mg3  1  0.177  0.839  0.625  1.0
  Mg  Mg4  1  0.662  0.324  0.125  1.0
  Mg  Mg5  1  0.661  0.323  0.625  1.0
  Mg  Mg6  1  0.662  0.838  0.125  1.0
  Mg  Mg7  1  0.661  0.839  0.625  1.0
  Mg  Mg8  1  0.341  0.159  0.370  1.0
  Mg  Mg9  1  0.341  0.159  0.880  1.0
  Mg  Mg10  1  0.341  0.682  0.370  1.0
  Mg  Mg11  1  0.341  0.682  0.880  1.0
  Mg  Mg12  1  0.818  0.159  0.370  1.0
  Mg  Mg13  1  0.818  0.159  0.880  1.0
  Mg  Mg14  1  0.833  0.667  0.373  1.0
  Mg  Mg15  1  0.833  0.667  0.877  1.0
[/CIF]
.