The material structure described by SrMg14Al crystallizes in the orthorhombic Amm2 space group. Sr(1) is bonded to two equivalent Mg(7), four equivalent Mg(3), four equivalent Mg(5), and two equivalent Al(1) atoms to form SrMg10Al2 cuboctahedra that share corners with four equivalent Mg(1)Mg12 cuboctahedra, corners with six equivalent Sr(1)Mg10Al2 cuboctahedra, corners with eight equivalent Mg(4)Mg12 cuboctahedra, edges with four equivalent Mg(7)SrMg11 cuboctahedra, edges with eight equivalent Mg(5)SrMg10Al cuboctahedra, faces with two equivalent Mg(2)Mg12 cuboctahedra, faces with two equivalent Mg(7)SrMg11 cuboctahedra, faces with four equivalent Mg(5)SrMg10Al cuboctahedra, and faces with six equivalent Mg(6)Mg11Al cuboctahedra. There are seven inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Mg(2), two equivalent Mg(6), four equivalent Mg(4), and four equivalent Mg(5) atoms to form MgMg12 cuboctahedra that share corners with four equivalent Sr(1)Mg10Al2 cuboctahedra, corners with six equivalent Mg(1)Mg12 cuboctahedra, edges with two equivalent Mg(2)Mg12 cuboctahedra, edges with four equivalent Mg(6)Mg11Al cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, edges with eight equivalent Mg(5)SrMg10Al cuboctahedra, faces with two equivalent Mg(6)Mg11Al cuboctahedra, faces with two equivalent Mg(2)Mg12 cuboctahedra, faces with four equivalent Mg(4)Mg12 cuboctahedra, faces with four equivalent Mg(5)SrMg10Al cuboctahedra, and faces with six equivalent Mg(7)SrMg11 cuboctahedra. In the second Mg site, Mg(2) is bonded to two equivalent Mg(1), two equivalent Mg(7), four equivalent Mg(4), and four equivalent Mg(5) atoms to form MgMg12 cuboctahedra that share corners with six equivalent Mg(2)Mg12 cuboctahedra, edges with two equivalent Mg(1)Mg12 cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, edges with four equivalent Mg(7)SrMg11 cuboctahedra, edges with eight equivalent Mg(5)SrMg10Al cuboctahedra, faces with two equivalent Sr(1)Mg10Al2 cuboctahedra, faces with two equivalent Mg(1)Mg12 cuboctahedra, faces with two equivalent Mg(7)SrMg11 cuboctahedra, faces with four equivalent Mg(4)Mg12 cuboctahedra, faces with four equivalent Mg(5)SrMg10Al cuboctahedra, and faces with six equivalent Mg(6)Mg11Al cuboctahedra. In the third Mg site, Mg(3) is bonded in a 3-coordinate geometry to two equivalent Sr(1), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), and one Al(1) atom. In the fourth Mg site, Mg(4) is bonded to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(4), two equivalent Mg(5), two equivalent Mg(6), and two equivalent Mg(7) atoms to form MgMg12 cuboctahedra that share corners with four equivalent Sr(1)Mg10Al2 cuboctahedra, corners with six equivalent Mg(4)Mg12 cuboctahedra, edges with two equivalent Mg(1)Mg12 cuboctahedra, edges with two equivalent Mg(2)Mg12 cuboctahedra, edges with two equivalent Mg(4)Mg12 cuboctahedra, edges with four equivalent Mg(6)Mg11Al cuboctahedra, edges with four equivalent Mg(5)SrMg10Al cuboctahedra, edges with four equivalent Mg(7)SrMg11 cuboctahedra, faces with two equivalent Mg(6)Mg11Al cuboctahedra, faces with two equivalent Mg(1)Mg12 cuboctahedra, faces with two equivalent Mg(2)Mg12 cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, faces with two equivalent Mg(7)SrMg11 cuboctahedra, and faces with eight equivalent Mg(5)SrMg10Al cuboctahedra. In the fifth Mg site, Mg(5) is bonded to one Sr(1), one Mg(1), one Mg(2), one Mg(3), one Mg(4), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), and one Al(1) atom to form distorted MgSrMg10Al cuboctahedra that share corners with four equivalent Mg(6)Mg11Al cuboctahedra, corners with four equivalent Mg(7)SrMg11 cuboctahedra, corners with ten equivalent Mg(5)SrMg10Al cuboctahedra, edges with two equivalent Sr(1)Mg10Al2 cuboctahedra, edges with two equivalent Mg(6)Mg11Al cuboctahedra, edges with two equivalent Mg(1)Mg12 cuboctahedra, edges with two equivalent Mg(2)Mg12 cuboctahedra, edges with two equivalent Mg(4)Mg12 cuboctahedra, edges with two equivalent Mg(5)SrMg10Al cuboctahedra, edges with two equivalent Mg(7)SrMg11 cuboctahedra,  a faceface with one Sr(1)Mg10Al2 cuboctahedra,  a faceface with one Mg(1)Mg12 cuboctahedra,  a faceface with one Mg(2)Mg12 cuboctahedra, faces with two equivalent Mg(6)Mg11Al cuboctahedra, faces with two equivalent Mg(7)SrMg11 cuboctahedra, faces with four equivalent Mg(4)Mg12 cuboctahedra, and faces with four equivalent Mg(5)SrMg10Al cuboctahedra. In the sixth Mg site, Mg(6) is bonded to one Mg(1), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mg(7), four equivalent Mg(5), and one Al(1) atom to form distorted MgMg11Al cuboctahedra that share corners with four equivalent Mg(7)SrMg11 cuboctahedra, corners with six equivalent Mg(6)Mg11Al cuboctahedra, corners with eight equivalent Mg(5)SrMg10Al cuboctahedra, edges with two equivalent Mg(1)Mg12 cuboctahedra, edges with two equivalent Mg(7)SrMg11 cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, edges with four equivalent Mg(5)SrMg10Al cuboctahedra,  a faceface with one Mg(1)Mg12 cuboctahedra, faces with two equivalent Mg(6)Mg11Al cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, faces with two equivalent Mg(7)SrMg11 cuboctahedra, faces with three equivalent Sr(1)Mg10Al2 cuboctahedra, faces with three equivalent Mg(2)Mg12 cuboctahedra, and faces with four equivalent Mg(5)SrMg10Al cuboctahedra. In the seventh Mg site, Mg(7) is bonded to one Sr(1), one Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mg(6), and four equivalent Mg(5) atoms to form distorted MgSrMg11 cuboctahedra that share corners with four equivalent Mg(6)Mg11Al cuboctahedra, corners with six equivalent Mg(7)SrMg11 cuboctahedra, corners with eight equivalent Mg(5)SrMg10Al cuboctahedra, edges with two equivalent Sr(1)Mg10Al2 cuboctahedra, edges with two equivalent Mg(6)Mg11Al cuboctahedra, edges with two equivalent Mg(2)Mg12 cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, edges with four equivalent Mg(5)SrMg10Al cuboctahedra,  a faceface with one Sr(1)Mg10Al2 cuboctahedra,  a faceface with one Mg(2)Mg12 cuboctahedra, faces with two equivalent Mg(6)Mg11Al cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, faces with two equivalent Mg(7)SrMg11 cuboctahedra, faces with three equivalent Mg(1)Mg12 cuboctahedra, and faces with four equivalent Mg(5)SrMg10Al cuboctahedra. Al(1) is bonded in a 10-coordinate geometry to two equivalent Sr(1), two equivalent Mg(3), two equivalent Mg(6), and four equivalent Mg(5) atoms. is represented by the CIF file [CIF]
data_SrMg14Al
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.507
_cell_length_b   6.493
_cell_length_c   10.525
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.927
_symmetry_Int_Tables_number   1
_cell_volume   385.419
_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  0.164  0.832  0.125  1.0
  Mg  Mg1  1  0.162  0.331  0.625  1.0
  Mg  Mg2  1  0.169  0.834  0.625  1.0
  Mg  Mg3  1  0.659  0.339  0.125  1.0
  Mg  Mg4  1  0.667  0.329  0.625  1.0
  Mg  Mg5  1  0.659  0.820  0.125  1.0
  Mg  Mg6  1  0.667  0.838  0.625  1.0
  Mg  Mg7  1  0.335  0.176  0.384  1.0
  Mg  Mg8  1  0.335  0.176  0.866  1.0
  Mg  Mg9  1  0.335  0.659  0.384  1.0
  Mg  Mg10  1  0.335  0.659  0.866  1.0
  Mg  Mg11  1  0.837  0.169  0.365  1.0
  Mg  Mg12  1  0.837  0.169  0.885  1.0
  Mg  Mg13  1  0.825  0.662  0.389  1.0
  Mg  Mg14  1  0.825  0.662  0.861  1.0
  Al  Al15  1  0.190  0.345  0.125  1.0
[/CIF]
.
The material structure described by SrMg14Al crystallizes in the orthorhombic Amm2 space group. Sr(1) is bonded to two equivalent Mg(7), four equivalent Mg(3), four equivalent Mg(5), and two equivalent Al(1) atoms to form SrMg10Al2 cuboctahedra that share corners with four equivalent Mg(1)Mg12 cuboctahedra, corners with six equivalent Sr(1)Mg10Al2 cuboctahedra, corners with eight equivalent Mg(4)Mg12 cuboctahedra, edges with four equivalent Mg(7)SrMg11 cuboctahedra, edges with eight equivalent Mg(5)SrMg10Al cuboctahedra, faces with two equivalent Mg(2)Mg12 cuboctahedra, faces with two equivalent Mg(7)SrMg11 cuboctahedra, faces with four equivalent Mg(5)SrMg10Al cuboctahedra, and faces with six equivalent Mg(6)Mg11Al cuboctahedra. There are seven inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Mg(2), two equivalent Mg(6), four equivalent Mg(4), and four equivalent Mg(5) atoms to form MgMg12 cuboctahedra that share corners with four equivalent Sr(1)Mg10Al2 cuboctahedra, corners with six equivalent Mg(1)Mg12 cuboctahedra, edges with two equivalent Mg(2)Mg12 cuboctahedra, edges with four equivalent Mg(6)Mg11Al cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, edges with eight equivalent Mg(5)SrMg10Al cuboctahedra, faces with two equivalent Mg(6)Mg11Al cuboctahedra, faces with two equivalent Mg(2)Mg12 cuboctahedra, faces with four equivalent Mg(4)Mg12 cuboctahedra, faces with four equivalent Mg(5)SrMg10Al cuboctahedra, and faces with six equivalent Mg(7)SrMg11 cuboctahedra. In the second Mg site, Mg(2) is bonded to two equivalent Mg(1), two equivalent Mg(7), four equivalent Mg(4), and four equivalent Mg(5) atoms to form MgMg12 cuboctahedra that share corners with six equivalent Mg(2)Mg12 cuboctahedra, edges with two equivalent Mg(1)Mg12 cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, edges with four equivalent Mg(7)SrMg11 cuboctahedra, edges with eight equivalent Mg(5)SrMg10Al cuboctahedra, faces with two equivalent Sr(1)Mg10Al2 cuboctahedra, faces with two equivalent Mg(1)Mg12 cuboctahedra, faces with two equivalent Mg(7)SrMg11 cuboctahedra, faces with four equivalent Mg(4)Mg12 cuboctahedra, faces with four equivalent Mg(5)SrMg10Al cuboctahedra, and faces with six equivalent Mg(6)Mg11Al cuboctahedra. In the third Mg site, Mg(3) is bonded in a 3-coordinate geometry to two equivalent Sr(1), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), and one Al(1) atom. In the fourth Mg site, Mg(4) is bonded to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(4), two equivalent Mg(5), two equivalent Mg(6), and two equivalent Mg(7) atoms to form MgMg12 cuboctahedra that share corners with four equivalent Sr(1)Mg10Al2 cuboctahedra, corners with six equivalent Mg(4)Mg12 cuboctahedra, edges with two equivalent Mg(1)Mg12 cuboctahedra, edges with two equivalent Mg(2)Mg12 cuboctahedra, edges with two equivalent Mg(4)Mg12 cuboctahedra, edges with four equivalent Mg(6)Mg11Al cuboctahedra, edges with four equivalent Mg(5)SrMg10Al cuboctahedra, edges with four equivalent Mg(7)SrMg11 cuboctahedra, faces with two equivalent Mg(6)Mg11Al cuboctahedra, faces with two equivalent Mg(1)Mg12 cuboctahedra, faces with two equivalent Mg(2)Mg12 cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, faces with two equivalent Mg(7)SrMg11 cuboctahedra, and faces with eight equivalent Mg(5)SrMg10Al cuboctahedra. In the fifth Mg site, Mg(5) is bonded to one Sr(1), one Mg(1), one Mg(2), one Mg(3), one Mg(4), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), and one Al(1) atom to form distorted MgSrMg10Al cuboctahedra that share corners with four equivalent Mg(6)Mg11Al cuboctahedra, corners with four equivalent Mg(7)SrMg11 cuboctahedra, corners with ten equivalent Mg(5)SrMg10Al cuboctahedra, edges with two equivalent Sr(1)Mg10Al2 cuboctahedra, edges with two equivalent Mg(6)Mg11Al cuboctahedra, edges with two equivalent Mg(1)Mg12 cuboctahedra, edges with two equivalent Mg(2)Mg12 cuboctahedra, edges with two equivalent Mg(4)Mg12 cuboctahedra, edges with two equivalent Mg(5)SrMg10Al cuboctahedra, edges with two equivalent Mg(7)SrMg11 cuboctahedra,  a faceface with one Sr(1)Mg10Al2 cuboctahedra,  a faceface with one Mg(1)Mg12 cuboctahedra,  a faceface with one Mg(2)Mg12 cuboctahedra, faces with two equivalent Mg(6)Mg11Al cuboctahedra, faces with two equivalent Mg(7)SrMg11 cuboctahedra, faces with four equivalent Mg(4)Mg12 cuboctahedra, and faces with four equivalent Mg(5)SrMg10Al cuboctahedra. In the sixth Mg site, Mg(6) is bonded to one Mg(1), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mg(7), four equivalent Mg(5), and one Al(1) atom to form distorted MgMg11Al cuboctahedra that share corners with four equivalent Mg(7)SrMg11 cuboctahedra, corners with six equivalent Mg(6)Mg11Al cuboctahedra, corners with eight equivalent Mg(5)SrMg10Al cuboctahedra, edges with two equivalent Mg(1)Mg12 cuboctahedra, edges with two equivalent Mg(7)SrMg11 cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, edges with four equivalent Mg(5)SrMg10Al cuboctahedra,  a faceface with one Mg(1)Mg12 cuboctahedra, faces with two equivalent Mg(6)Mg11Al cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, faces with two equivalent Mg(7)SrMg11 cuboctahedra, faces with three equivalent Sr(1)Mg10Al2 cuboctahedra, faces with three equivalent Mg(2)Mg12 cuboctahedra, and faces with four equivalent Mg(5)SrMg10Al cuboctahedra. In the seventh Mg site, Mg(7) is bonded to one Sr(1), one Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mg(6), and four equivalent Mg(5) atoms to form distorted MgSrMg11 cuboctahedra that share corners with four equivalent Mg(6)Mg11Al cuboctahedra, corners with six equivalent Mg(7)SrMg11 cuboctahedra, corners with eight equivalent Mg(5)SrMg10Al cuboctahedra, edges with two equivalent Sr(1)Mg10Al2 cuboctahedra, edges with two equivalent Mg(6)Mg11Al cuboctahedra, edges with two equivalent Mg(2)Mg12 cuboctahedra, edges with four equivalent Mg(4)Mg12 cuboctahedra, edges with four equivalent Mg(5)SrMg10Al cuboctahedra,  a faceface with one Sr(1)Mg10Al2 cuboctahedra,  a faceface with one Mg(2)Mg12 cuboctahedra, faces with two equivalent Mg(6)Mg11Al cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, faces with two equivalent Mg(7)SrMg11 cuboctahedra, faces with three equivalent Mg(1)Mg12 cuboctahedra, and faces with four equivalent Mg(5)SrMg10Al cuboctahedra. Al(1) is bonded in a 10-coordinate geometry to two equivalent Sr(1), two equivalent Mg(3), two equivalent Mg(6), and four equivalent Mg(5) atoms. is represented by the CIF file [CIF]
data_SrMg14Al
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.507
_cell_length_b   6.493
_cell_length_c   10.525
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.927
_symmetry_Int_Tables_number   1
_cell_volume   385.419
_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  0.164  0.832  0.125  1.0
  Mg  Mg1  1  0.162  0.331  0.625  1.0
  Mg  Mg2  1  0.169  0.834  0.625  1.0
  Mg  Mg3  1  0.659  0.339  0.125  1.0
  Mg  Mg4  1  0.667  0.329  0.625  1.0
  Mg  Mg5  1  0.659  0.820  0.125  1.0
  Mg  Mg6  1  0.667  0.838  0.625  1.0
  Mg  Mg7  1  0.335  0.176  0.384  1.0
  Mg  Mg8  1  0.335  0.176  0.866  1.0
  Mg  Mg9  1  0.335  0.659  0.384  1.0
  Mg  Mg10  1  0.335  0.659  0.866  1.0
  Mg  Mg11  1  0.837  0.169  0.365  1.0
  Mg  Mg12  1  0.837  0.169  0.885  1.0
  Mg  Mg13  1  0.825  0.662  0.389  1.0
  Mg  Mg14  1  0.825  0.662  0.861  1.0
  Al  Al15  1  0.190  0.345  0.125  1.0
[/CIF]
.