The compound described by SrMg14Y crystallizes in the orthorhombic Amm2 space group. Sr(1) is bonded to two equivalent Mg(7); four Mg(3,3,3); four equivalent Mg(5); and two equivalent Y(1) atoms to form SrY2Mg10 cuboctahedra that share corners with four equivalent Mg(1)Mg12 cuboctahedra; corners with six equivalent Sr(1)Y2Mg10 cuboctahedra; corners with eight equivalent Mg(4)Mg12 cuboctahedra; edges with two equivalent Y(1)Sr2Mg10 cuboctahedra; edges with four Mg(3,3,3)Sr2Y2Mg8 cuboctahedra; edges with four equivalent Mg(7)SrMg11 cuboctahedra; edges with eight Mg(5,5)SrYMg10 cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; faces with two equivalent Mg(7)SrMg11 cuboctahedra; faces with two equivalent Y(1)Sr2Mg10 cuboctahedra; faces with four Mg(3,3,3)Sr2Y2Mg8 cuboctahedra; faces with four equivalent Mg(5)SrYMg10 cuboctahedra; and faces with six equivalent Mg(6)YMg11 cuboctahedra. There are ten 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)Y2Mg10 cuboctahedra; corners with six equivalent Mg(1)Mg12 cuboctahedra; corners with eight Mg(3,3,3)Sr2Y2Mg8 cuboctahedra; edges with two equivalent Mg(2)Mg12 cuboctahedra; edges with four equivalent Mg(4)Mg12 cuboctahedra; edges with four equivalent Mg(6)YMg11 cuboctahedra; edges with eight Mg(5,5)SrYMg10 cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; faces with two equivalent Mg(6)YMg11 cuboctahedra; faces with two equivalent Y(1)Sr2Mg10 cuboctahedra; faces with four equivalent Mg(4)Mg12 cuboctahedra; faces with four equivalent Mg(5)SrYMg10 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 four equivalent Y(1)Sr2Mg10 cuboctahedra; corners with six equivalent Mg(2)Mg12 cuboctahedra; corners with eight Mg(3,3,3)Sr2Y2Mg8 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 Mg(5,5)SrYMg10 cuboctahedra; faces with two equivalent Sr(1)Y2Mg10 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)SrYMg10 cuboctahedra; and faces with six equivalent Mg(6)YMg11 cuboctahedra. In the third Mg site, Mg(3) is bonded to two equivalent Sr(1), two equivalent Mg(3), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), and two equivalent Y(1) atoms to form distorted MgSr2Y2Mg8 cuboctahedra that share corners with four equivalent Mg(1)Mg12 cuboctahedra; corners with four equivalent Mg(2)Mg12 cuboctahedra; corners with four equivalent Mg(4)Mg12 cuboctahedra; corners with six equivalent Mg(3)Sr2Y2Mg8 cuboctahedra; edges with two equivalent Sr(1)Y2Mg10 cuboctahedra; edges with two equivalent Mg(3)Sr2Y2Mg8 cuboctahedra; edges with two equivalent Y(1)Sr2Mg10 cuboctahedra; edges with four equivalent Mg(7)SrMg11 cuboctahedra; edges with four equivalent Mg(5)SrYMg10 cuboctahedra; edges with four equivalent Mg(6)YMg11 cuboctahedra; faces with two equivalent Sr(1)Y2Mg10 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with two equivalent Mg(3)Sr2Y2Mg8 cuboctahedra; faces with two equivalent Mg(7)SrMg11 cuboctahedra; faces with two equivalent Mg(6)YMg11 cuboctahedra; faces with two equivalent Y(1)Sr2Mg10 cuboctahedra; and faces with eight Mg(5,5)SrYMg10 cuboctahedra. 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)Y2Mg10 cuboctahedra; corners with four equivalent Mg(3)Sr2Y2Mg8 cuboctahedra; corners with four equivalent Y(1)Sr2Mg10 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(7)SrMg11 cuboctahedra; edges with four equivalent Mg(5)SrYMg10 cuboctahedra; edges with four equivalent Mg(6)YMg11 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(3)Sr2Y2Mg8 cuboctahedra; faces with two equivalent Mg(7)SrMg11 cuboctahedra; faces with two equivalent Mg(6)YMg11 cuboctahedra; and faces with eight Mg(5,5)SrYMg10 cuboctahedra. In the fifth Mg site, Mg(3) is bonded to two equivalent Sr(1), two equivalent Mg(3), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), and two equivalent Y(1) atoms to form distorted MgSr2Y2Mg8 cuboctahedra that share corners with four equivalent Mg(1)Mg12 cuboctahedra; corners with four equivalent Mg(2)Mg12 cuboctahedra; corners with four equivalent Mg(4)Mg12 cuboctahedra; corners with six Mg(3,3)Sr2Y2Mg8 cuboctahedra; edges with two equivalent Sr(1)Y2Mg10 cuboctahedra; edges with two equivalent Mg(3)Sr2Y2Mg8 cuboctahedra; edges with two equivalent Y(1)Sr2Mg10 cuboctahedra; edges with four equivalent Mg(7)SrMg11 cuboctahedra; edges with four equivalent Mg(5)SrYMg10 cuboctahedra; edges with four equivalent Mg(6)YMg11 cuboctahedra; faces with two equivalent Sr(1)Y2Mg10 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with two equivalent Mg(3)Sr2Y2Mg8 cuboctahedra; faces with two equivalent Mg(7)SrMg11 cuboctahedra; faces with two equivalent Mg(6)YMg11 cuboctahedra; faces with two equivalent Y(1)Sr2Mg10 cuboctahedra; and faces with eight Mg(5,5)SrYMg10 cuboctahedra. In the sixth 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 Y(1) atom to form distorted MgSrYMg10 cuboctahedra that share corners with four equivalent Mg(7)SrMg11 cuboctahedra; corners with four equivalent Mg(6)YMg11 cuboctahedra; corners with ten Mg(5,5)SrYMg10 cuboctahedra; edges with two equivalent Sr(1)Y2Mg10 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(3)Sr2Y2Mg8 cuboctahedra; edges with two equivalent Mg(7)SrMg11 cuboctahedra; edges with two equivalent Mg(5)SrYMg10 cuboctahedra; edges with two equivalent Mg(6)YMg11 cuboctahedra; edges with two equivalent Y(1)Sr2Mg10 cuboctahedra;  a faceface with one Sr(1)Y2Mg10 cuboctahedra;  a faceface with one Mg(1)Mg12 cuboctahedra;  a faceface with one Mg(2)Mg12 cuboctahedra;  a faceface with one Y(1)Sr2Mg10 cuboctahedra; faces with two equivalent Mg(7)SrMg11 cuboctahedra; faces with two equivalent Mg(6)YMg11 cuboctahedra; faces with four equivalent Mg(4)Mg12 cuboctahedra; faces with four Mg(3,3,3)Sr2Y2Mg8 cuboctahedra; and faces with four Mg(5,5)SrYMg10 cuboctahedra. In the seventh 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 Y(1) atom to form distorted MgSrYMg10 cuboctahedra that share corners with four equivalent Mg(7)SrMg11 cuboctahedra; corners with four equivalent Mg(6)YMg11 cuboctahedra; corners with ten equivalent Mg(5)SrYMg10 cuboctahedra; edges with two equivalent Sr(1)Y2Mg10 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(3)Sr2Y2Mg8 cuboctahedra; edges with two equivalent Mg(7)SrMg11 cuboctahedra; edges with two equivalent Mg(5)SrYMg10 cuboctahedra; edges with two equivalent Mg(6)YMg11 cuboctahedra; edges with two equivalent Y(1)Sr2Mg10 cuboctahedra;  a faceface with one Sr(1)Y2Mg10 cuboctahedra;  a faceface with one Mg(1)Mg12 cuboctahedra;  a faceface with one Mg(2)Mg12 cuboctahedra;  a faceface with one Y(1)Sr2Mg10 cuboctahedra; faces with two equivalent Mg(7)SrMg11 cuboctahedra; faces with two equivalent Mg(6)YMg11 cuboctahedra; faces with four equivalent Mg(4)Mg12 cuboctahedra; faces with four Mg(3,3)Sr2Y2Mg8 cuboctahedra; and faces with four equivalent Mg(5)SrYMg10 cuboctahedra. In the eighth Mg site, Mg(6) is bonded to one Mg(1); two Mg(3,3); two equivalent Mg(4); two equivalent Mg(7); four Mg(5,5); and one Y(1) atom to form MgYMg11 cuboctahedra that share corners with four equivalent Mg(7)SrMg11 cuboctahedra; corners with six equivalent Mg(6)YMg11 cuboctahedra; corners with eight Mg(5,5)SrYMg10 cuboctahedra; edges with two equivalent Mg(1)Mg12 cuboctahedra; edges with two equivalent Mg(7)SrMg11 cuboctahedra; edges with two equivalent Y(1)Sr2Mg10 cuboctahedra; edges with four equivalent Mg(4)Mg12 cuboctahedra; edges with four Mg(3,3,3)Sr2Y2Mg8 cuboctahedra; edges with four Mg(5,5)SrYMg10 cuboctahedra;  a faceface with one Mg(1)Mg12 cuboctahedra;  a faceface with one Y(1)Sr2Mg10 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with two Mg(3,3)Sr2Y2Mg8 cuboctahedra; faces with two equivalent Mg(7)SrMg11 cuboctahedra; faces with two equivalent Mg(6)YMg11 cuboctahedra; faces with three equivalent Sr(1)Y2Mg10 cuboctahedra; faces with three equivalent Mg(2)Mg12 cuboctahedra; and faces with four Mg(5,5)SrYMg10 cuboctahedra. In the ninth Mg site, Mg(7) is bonded to one Sr(1); one Mg(2); two Mg(3,3); two equivalent Mg(4); two equivalent Mg(6); and four Mg(5,5) atoms to form distorted MgSrMg11 cuboctahedra that share corners with four equivalent Mg(6)YMg11 cuboctahedra; corners with six equivalent Mg(7)SrMg11 cuboctahedra; corners with eight Mg(5,5)SrYMg10 cuboctahedra; edges with two equivalent Sr(1)Y2Mg10 cuboctahedra; edges with two equivalent Mg(2)Mg12 cuboctahedra; edges with two equivalent Mg(6)YMg11 cuboctahedra; edges with four equivalent Mg(4)Mg12 cuboctahedra; edges with four Mg(3,3,3)Sr2Y2Mg8 cuboctahedra; edges with four Mg(5,5)SrYMg10 cuboctahedra;  a faceface with one Sr(1)Y2Mg10 cuboctahedra;  a faceface with one Mg(2)Mg12 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with two Mg(3,3)Sr2Y2Mg8 cuboctahedra; faces with two equivalent Mg(7)SrMg11 cuboctahedra; faces with two equivalent Mg(6)YMg11 cuboctahedra; faces with three equivalent Mg(1)Mg12 cuboctahedra; faces with three equivalent Y(1)Sr2Mg10 cuboctahedra; and faces with four Mg(5,5)SrYMg10 cuboctahedra. In the tenth Mg site, Mg(3) is bonded to two equivalent Sr(1), two equivalent Mg(3), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), and two equivalent Y(1) atoms to form distorted MgSr2Y2Mg8 cuboctahedra that share corners with four equivalent Mg(1)Mg12 cuboctahedra; corners with four equivalent Mg(2)Mg12 cuboctahedra; corners with four equivalent Mg(4)Mg12 cuboctahedra; corners with six Mg(3,3)Sr2Y2Mg8 cuboctahedra; edges with two equivalent Sr(1)Y2Mg10 cuboctahedra; edges with two equivalent Mg(3)Sr2Y2Mg8 cuboctahedra; edges with two equivalent Y(1)Sr2Mg10 cuboctahedra; edges with four equivalent Mg(7)SrMg11 cuboctahedra; edges with four equivalent Mg(5)SrYMg10 cuboctahedra; edges with four equivalent Mg(6)YMg11 cuboctahedra; faces with two equivalent Sr(1)Y2Mg10 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with two equivalent Mg(3)Sr2Y2Mg8 cuboctahedra; faces with two equivalent Mg(7)SrMg11 cuboctahedra; faces with two equivalent Mg(6)YMg11 cuboctahedra; faces with two equivalent Y(1)Sr2Mg10 cuboctahedra; and faces with eight Mg(5,5)SrYMg10 cuboctahedra. Y(1) is bonded to two equivalent Sr(1); two equivalent Mg(6); four Mg(3,3,3); and four equivalent Mg(5) atoms to form YSr2Mg10 cuboctahedra that share corners with four equivalent Mg(2)Mg12 cuboctahedra; corners with six equivalent Y(1)Sr2Mg10 cuboctahedra; corners with eight equivalent Mg(4)Mg12 cuboctahedra; edges with two equivalent Sr(1)Y2Mg10 cuboctahedra; edges with four Mg(3,3,3)Sr2Y2Mg8 cuboctahedra; edges with four equivalent Mg(6)YMg11 cuboctahedra; edges with eight Mg(5,5)SrYMg10 cuboctahedra; faces with two equivalent Sr(1)Y2Mg10 cuboctahedra; faces with two equivalent Mg(1)Mg12 cuboctahedra; faces with two equivalent Mg(6)YMg11 cuboctahedra; faces with four Mg(3,3,3)Sr2Y2Mg8 cuboctahedra; faces with four equivalent Mg(5)SrYMg10 cuboctahedra; and faces with six equivalent Mg(7)SrMg11 cuboctahedra. is represented by the CIF card [CIF]
data_SrYMg14
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.643
_cell_length_b   6.650
_cell_length_c   10.586
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.035
_symmetry_Int_Tables_number   1
_cell_volume   404.832
_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  0.170  0.835  0.125  1.0
  Y  Y1  1  0.175  0.338  0.125  1.0
  Mg  Mg2  1  0.164  0.332  0.625  1.0
  Mg  Mg3  1  0.166  0.833  0.625  1.0
  Mg  Mg4  1  0.664  0.331  0.125  1.0
  Mg  Mg5  1  0.668  0.333  0.625  1.0
  Mg  Mg6  1  0.664  0.832  0.125  1.0
  Mg  Mg7  1  0.668  0.834  0.625  1.0
  Mg  Mg8  1  0.339  0.175  0.387  1.0
  Mg  Mg9  1  0.339  0.175  0.863  1.0
  Mg  Mg10  1  0.339  0.664  0.387  1.0
  Mg  Mg11  1  0.339  0.664  0.863  1.0
  Mg  Mg12  1  0.831  0.166  0.376  1.0
  Mg  Mg13  1  0.831  0.166  0.874  1.0
  Mg  Mg14  1  0.823  0.661  0.383  1.0
  Mg  Mg15  1  0.823  0.661  0.867  1.0
[/CIF]
.
The compound described by SrMg14Y crystallizes in the orthorhombic Amm2 space group. Sr(1) is bonded to two equivalent Mg(7); four Mg(3,3,3); four equivalent Mg(5); and two equivalent Y(1) atoms to form SrY2Mg10 cuboctahedra that share corners with four equivalent Mg(1)Mg12 cuboctahedra; corners with six equivalent Sr(1)Y2Mg10 cuboctahedra; corners with eight equivalent Mg(4)Mg12 cuboctahedra; edges with two equivalent Y(1)Sr2Mg10 cuboctahedra; edges with four Mg(3,3,3)Sr2Y2Mg8 cuboctahedra; edges with four equivalent Mg(7)SrMg11 cuboctahedra; edges with eight Mg(5,5)SrYMg10 cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; faces with two equivalent Mg(7)SrMg11 cuboctahedra; faces with two equivalent Y(1)Sr2Mg10 cuboctahedra; faces with four Mg(3,3,3)Sr2Y2Mg8 cuboctahedra; faces with four equivalent Mg(5)SrYMg10 cuboctahedra; and faces with six equivalent Mg(6)YMg11 cuboctahedra. There are ten 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)Y2Mg10 cuboctahedra; corners with six equivalent Mg(1)Mg12 cuboctahedra; corners with eight Mg(3,3,3)Sr2Y2Mg8 cuboctahedra; edges with two equivalent Mg(2)Mg12 cuboctahedra; edges with four equivalent Mg(4)Mg12 cuboctahedra; edges with four equivalent Mg(6)YMg11 cuboctahedra; edges with eight Mg(5,5)SrYMg10 cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; faces with two equivalent Mg(6)YMg11 cuboctahedra; faces with two equivalent Y(1)Sr2Mg10 cuboctahedra; faces with four equivalent Mg(4)Mg12 cuboctahedra; faces with four equivalent Mg(5)SrYMg10 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 four equivalent Y(1)Sr2Mg10 cuboctahedra; corners with six equivalent Mg(2)Mg12 cuboctahedra; corners with eight Mg(3,3,3)Sr2Y2Mg8 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 Mg(5,5)SrYMg10 cuboctahedra; faces with two equivalent Sr(1)Y2Mg10 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)SrYMg10 cuboctahedra; and faces with six equivalent Mg(6)YMg11 cuboctahedra. In the third Mg site, Mg(3) is bonded to two equivalent Sr(1), two equivalent Mg(3), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), and two equivalent Y(1) atoms to form distorted MgSr2Y2Mg8 cuboctahedra that share corners with four equivalent Mg(1)Mg12 cuboctahedra; corners with four equivalent Mg(2)Mg12 cuboctahedra; corners with four equivalent Mg(4)Mg12 cuboctahedra; corners with six equivalent Mg(3)Sr2Y2Mg8 cuboctahedra; edges with two equivalent Sr(1)Y2Mg10 cuboctahedra; edges with two equivalent Mg(3)Sr2Y2Mg8 cuboctahedra; edges with two equivalent Y(1)Sr2Mg10 cuboctahedra; edges with four equivalent Mg(7)SrMg11 cuboctahedra; edges with four equivalent Mg(5)SrYMg10 cuboctahedra; edges with four equivalent Mg(6)YMg11 cuboctahedra; faces with two equivalent Sr(1)Y2Mg10 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with two equivalent Mg(3)Sr2Y2Mg8 cuboctahedra; faces with two equivalent Mg(7)SrMg11 cuboctahedra; faces with two equivalent Mg(6)YMg11 cuboctahedra; faces with two equivalent Y(1)Sr2Mg10 cuboctahedra; and faces with eight Mg(5,5)SrYMg10 cuboctahedra. 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)Y2Mg10 cuboctahedra; corners with four equivalent Mg(3)Sr2Y2Mg8 cuboctahedra; corners with four equivalent Y(1)Sr2Mg10 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(7)SrMg11 cuboctahedra; edges with four equivalent Mg(5)SrYMg10 cuboctahedra; edges with four equivalent Mg(6)YMg11 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(3)Sr2Y2Mg8 cuboctahedra; faces with two equivalent Mg(7)SrMg11 cuboctahedra; faces with two equivalent Mg(6)YMg11 cuboctahedra; and faces with eight Mg(5,5)SrYMg10 cuboctahedra. In the fifth Mg site, Mg(3) is bonded to two equivalent Sr(1), two equivalent Mg(3), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), and two equivalent Y(1) atoms to form distorted MgSr2Y2Mg8 cuboctahedra that share corners with four equivalent Mg(1)Mg12 cuboctahedra; corners with four equivalent Mg(2)Mg12 cuboctahedra; corners with four equivalent Mg(4)Mg12 cuboctahedra; corners with six Mg(3,3)Sr2Y2Mg8 cuboctahedra; edges with two equivalent Sr(1)Y2Mg10 cuboctahedra; edges with two equivalent Mg(3)Sr2Y2Mg8 cuboctahedra; edges with two equivalent Y(1)Sr2Mg10 cuboctahedra; edges with four equivalent Mg(7)SrMg11 cuboctahedra; edges with four equivalent Mg(5)SrYMg10 cuboctahedra; edges with four equivalent Mg(6)YMg11 cuboctahedra; faces with two equivalent Sr(1)Y2Mg10 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with two equivalent Mg(3)Sr2Y2Mg8 cuboctahedra; faces with two equivalent Mg(7)SrMg11 cuboctahedra; faces with two equivalent Mg(6)YMg11 cuboctahedra; faces with two equivalent Y(1)Sr2Mg10 cuboctahedra; and faces with eight Mg(5,5)SrYMg10 cuboctahedra. In the sixth 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 Y(1) atom to form distorted MgSrYMg10 cuboctahedra that share corners with four equivalent Mg(7)SrMg11 cuboctahedra; corners with four equivalent Mg(6)YMg11 cuboctahedra; corners with ten Mg(5,5)SrYMg10 cuboctahedra; edges with two equivalent Sr(1)Y2Mg10 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(3)Sr2Y2Mg8 cuboctahedra; edges with two equivalent Mg(7)SrMg11 cuboctahedra; edges with two equivalent Mg(5)SrYMg10 cuboctahedra; edges with two equivalent Mg(6)YMg11 cuboctahedra; edges with two equivalent Y(1)Sr2Mg10 cuboctahedra;  a faceface with one Sr(1)Y2Mg10 cuboctahedra;  a faceface with one Mg(1)Mg12 cuboctahedra;  a faceface with one Mg(2)Mg12 cuboctahedra;  a faceface with one Y(1)Sr2Mg10 cuboctahedra; faces with two equivalent Mg(7)SrMg11 cuboctahedra; faces with two equivalent Mg(6)YMg11 cuboctahedra; faces with four equivalent Mg(4)Mg12 cuboctahedra; faces with four Mg(3,3,3)Sr2Y2Mg8 cuboctahedra; and faces with four Mg(5,5)SrYMg10 cuboctahedra. In the seventh 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 Y(1) atom to form distorted MgSrYMg10 cuboctahedra that share corners with four equivalent Mg(7)SrMg11 cuboctahedra; corners with four equivalent Mg(6)YMg11 cuboctahedra; corners with ten equivalent Mg(5)SrYMg10 cuboctahedra; edges with two equivalent Sr(1)Y2Mg10 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(3)Sr2Y2Mg8 cuboctahedra; edges with two equivalent Mg(7)SrMg11 cuboctahedra; edges with two equivalent Mg(5)SrYMg10 cuboctahedra; edges with two equivalent Mg(6)YMg11 cuboctahedra; edges with two equivalent Y(1)Sr2Mg10 cuboctahedra;  a faceface with one Sr(1)Y2Mg10 cuboctahedra;  a faceface with one Mg(1)Mg12 cuboctahedra;  a faceface with one Mg(2)Mg12 cuboctahedra;  a faceface with one Y(1)Sr2Mg10 cuboctahedra; faces with two equivalent Mg(7)SrMg11 cuboctahedra; faces with two equivalent Mg(6)YMg11 cuboctahedra; faces with four equivalent Mg(4)Mg12 cuboctahedra; faces with four Mg(3,3)Sr2Y2Mg8 cuboctahedra; and faces with four equivalent Mg(5)SrYMg10 cuboctahedra. In the eighth Mg site, Mg(6) is bonded to one Mg(1); two Mg(3,3); two equivalent Mg(4); two equivalent Mg(7); four Mg(5,5); and one Y(1) atom to form MgYMg11 cuboctahedra that share corners with four equivalent Mg(7)SrMg11 cuboctahedra; corners with six equivalent Mg(6)YMg11 cuboctahedra; corners with eight Mg(5,5)SrYMg10 cuboctahedra; edges with two equivalent Mg(1)Mg12 cuboctahedra; edges with two equivalent Mg(7)SrMg11 cuboctahedra; edges with two equivalent Y(1)Sr2Mg10 cuboctahedra; edges with four equivalent Mg(4)Mg12 cuboctahedra; edges with four Mg(3,3,3)Sr2Y2Mg8 cuboctahedra; edges with four Mg(5,5)SrYMg10 cuboctahedra;  a faceface with one Mg(1)Mg12 cuboctahedra;  a faceface with one Y(1)Sr2Mg10 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with two Mg(3,3)Sr2Y2Mg8 cuboctahedra; faces with two equivalent Mg(7)SrMg11 cuboctahedra; faces with two equivalent Mg(6)YMg11 cuboctahedra; faces with three equivalent Sr(1)Y2Mg10 cuboctahedra; faces with three equivalent Mg(2)Mg12 cuboctahedra; and faces with four Mg(5,5)SrYMg10 cuboctahedra. In the ninth Mg site, Mg(7) is bonded to one Sr(1); one Mg(2); two Mg(3,3); two equivalent Mg(4); two equivalent Mg(6); and four Mg(5,5) atoms to form distorted MgSrMg11 cuboctahedra that share corners with four equivalent Mg(6)YMg11 cuboctahedra; corners with six equivalent Mg(7)SrMg11 cuboctahedra; corners with eight Mg(5,5)SrYMg10 cuboctahedra; edges with two equivalent Sr(1)Y2Mg10 cuboctahedra; edges with two equivalent Mg(2)Mg12 cuboctahedra; edges with two equivalent Mg(6)YMg11 cuboctahedra; edges with four equivalent Mg(4)Mg12 cuboctahedra; edges with four Mg(3,3,3)Sr2Y2Mg8 cuboctahedra; edges with four Mg(5,5)SrYMg10 cuboctahedra;  a faceface with one Sr(1)Y2Mg10 cuboctahedra;  a faceface with one Mg(2)Mg12 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with two Mg(3,3)Sr2Y2Mg8 cuboctahedra; faces with two equivalent Mg(7)SrMg11 cuboctahedra; faces with two equivalent Mg(6)YMg11 cuboctahedra; faces with three equivalent Mg(1)Mg12 cuboctahedra; faces with three equivalent Y(1)Sr2Mg10 cuboctahedra; and faces with four Mg(5,5)SrYMg10 cuboctahedra. In the tenth Mg site, Mg(3) is bonded to two equivalent Sr(1), two equivalent Mg(3), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), and two equivalent Y(1) atoms to form distorted MgSr2Y2Mg8 cuboctahedra that share corners with four equivalent Mg(1)Mg12 cuboctahedra; corners with four equivalent Mg(2)Mg12 cuboctahedra; corners with four equivalent Mg(4)Mg12 cuboctahedra; corners with six Mg(3,3)Sr2Y2Mg8 cuboctahedra; edges with two equivalent Sr(1)Y2Mg10 cuboctahedra; edges with two equivalent Mg(3)Sr2Y2Mg8 cuboctahedra; edges with two equivalent Y(1)Sr2Mg10 cuboctahedra; edges with four equivalent Mg(7)SrMg11 cuboctahedra; edges with four equivalent Mg(5)SrYMg10 cuboctahedra; edges with four equivalent Mg(6)YMg11 cuboctahedra; faces with two equivalent Sr(1)Y2Mg10 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with two equivalent Mg(3)Sr2Y2Mg8 cuboctahedra; faces with two equivalent Mg(7)SrMg11 cuboctahedra; faces with two equivalent Mg(6)YMg11 cuboctahedra; faces with two equivalent Y(1)Sr2Mg10 cuboctahedra; and faces with eight Mg(5,5)SrYMg10 cuboctahedra. Y(1) is bonded to two equivalent Sr(1); two equivalent Mg(6); four Mg(3,3,3); and four equivalent Mg(5) atoms to form YSr2Mg10 cuboctahedra that share corners with four equivalent Mg(2)Mg12 cuboctahedra; corners with six equivalent Y(1)Sr2Mg10 cuboctahedra; corners with eight equivalent Mg(4)Mg12 cuboctahedra; edges with two equivalent Sr(1)Y2Mg10 cuboctahedra; edges with four Mg(3,3,3)Sr2Y2Mg8 cuboctahedra; edges with four equivalent Mg(6)YMg11 cuboctahedra; edges with eight Mg(5,5)SrYMg10 cuboctahedra; faces with two equivalent Sr(1)Y2Mg10 cuboctahedra; faces with two equivalent Mg(1)Mg12 cuboctahedra; faces with two equivalent Mg(6)YMg11 cuboctahedra; faces with four Mg(3,3,3)Sr2Y2Mg8 cuboctahedra; faces with four equivalent Mg(5)SrYMg10 cuboctahedra; and faces with six equivalent Mg(7)SrMg11 cuboctahedra. is represented by the CIF card [CIF]
data_SrYMg14
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.643
_cell_length_b   6.650
_cell_length_c   10.586
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.035
_symmetry_Int_Tables_number   1
_cell_volume   404.832
_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  0.170  0.835  0.125  1.0
  Y  Y1  1  0.175  0.338  0.125  1.0
  Mg  Mg2  1  0.164  0.332  0.625  1.0
  Mg  Mg3  1  0.166  0.833  0.625  1.0
  Mg  Mg4  1  0.664  0.331  0.125  1.0
  Mg  Mg5  1  0.668  0.333  0.625  1.0
  Mg  Mg6  1  0.664  0.832  0.125  1.0
  Mg  Mg7  1  0.668  0.834  0.625  1.0
  Mg  Mg8  1  0.339  0.175  0.387  1.0
  Mg  Mg9  1  0.339  0.175  0.863  1.0
  Mg  Mg10  1  0.339  0.664  0.387  1.0
  Mg  Mg11  1  0.339  0.664  0.863  1.0
  Mg  Mg12  1  0.831  0.166  0.376  1.0
  Mg  Mg13  1  0.831  0.166  0.874  1.0
  Mg  Mg14  1  0.823  0.661  0.383  1.0
  Mg  Mg15  1  0.823  0.661  0.867  1.0
[/CIF]
.