The crystal structure described by CsMg14Nb crystallizes in the orthorhombic Amm2 space group. Cs(1) is bonded to two equivalent Mg(6); four Mg(3,3); four equivalent Mg(5); and two equivalent Nb(1) atoms to form CsMg10Nb2 cuboctahedra that share corners with four equivalent Mg(2)Mg12 cuboctahedra; corners with six equivalent Cs(1)Mg10Nb2 cuboctahedra; corners with eight Mg(4,4)Mg12 cuboctahedra; edges with two equivalent Nb(1)Cs2Mg10 cuboctahedra; edges with four Mg(3,3)Cs2Mg8Nb2 cuboctahedra; edges with four equivalent Mg(6)CsMg11 cuboctahedra; faces with two equivalent Mg(6)CsMg11 cuboctahedra; faces with two equivalent Mg(1)Mg12 cuboctahedra; faces with two equivalent Nb(1)Cs2Mg10 cuboctahedra; faces with four Mg(3,3)Cs2Mg8Nb2 cuboctahedra; and faces with six equivalent Mg(7)Mg11Nb cuboctahedra. There are eleven inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Mg(2); two equivalent Mg(6); four Mg(4,4); and four equivalent Mg(5) atoms to form MgMg12 cuboctahedra that share corners with four equivalent Nb(1)Cs2Mg10 cuboctahedra; corners with six equivalent Mg(1)Mg12 cuboctahedra; corners with eight Mg(3,3)Cs2Mg8Nb2 cuboctahedra; edges with two equivalent Mg(2)Mg12 cuboctahedra; edges with four equivalent Mg(6)CsMg11 cuboctahedra; edges with four Mg(4,4)Mg12 cuboctahedra; faces with two equivalent Cs(1)Mg10Nb2 cuboctahedra; faces with two equivalent Mg(6)CsMg11 cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; faces with four Mg(4,4)Mg12 cuboctahedra; and faces with six equivalent Mg(7)Mg11Nb cuboctahedra. In the second Mg site, Mg(2) is bonded to two equivalent Mg(1); two equivalent Mg(7); four Mg(4,4); and four equivalent Mg(5) atoms to form MgMg12 cuboctahedra that share corners with four equivalent Cs(1)Mg10Nb2 cuboctahedra; corners with six equivalent Mg(2)Mg12 cuboctahedra; corners with eight Mg(3,3)Cs2Mg8Nb2 cuboctahedra; edges with two equivalent Mg(1)Mg12 cuboctahedra; edges with four equivalent Mg(7)Mg11Nb cuboctahedra; edges with four Mg(4,4)Mg12 cuboctahedra; faces with two equivalent Mg(7)Mg11Nb cuboctahedra; faces with two equivalent Mg(1)Mg12 cuboctahedra; faces with two equivalent Nb(1)Cs2Mg10 cuboctahedra; faces with four Mg(4,4)Mg12 cuboctahedra; and faces with six equivalent Mg(6)CsMg11 cuboctahedra. In the third Mg site, Mg(3) is bonded to two equivalent Cs(1); two equivalent Mg(3); two Mg(5,5); two equivalent Mg(6); two equivalent Mg(7); and two equivalent Nb(1) atoms to form distorted MgCs2Mg8Nb2 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)Cs2Mg8Nb2 cuboctahedra, edges with two equivalent Cs(1)Mg10Nb2 cuboctahedra, edges with two equivalent Mg(3)Cs2Mg8Nb2 cuboctahedra, edges with two equivalent Nb(1)Cs2Mg10 cuboctahedra, edges with four equivalent Mg(6)CsMg11 cuboctahedra, edges with four equivalent Mg(7)Mg11Nb cuboctahedra, faces with two equivalent Cs(1)Mg10Nb2 cuboctahedra, faces with two equivalent Mg(3)Cs2Mg8Nb2 cuboctahedra, faces with two equivalent Mg(6)CsMg11 cuboctahedra, faces with two equivalent Mg(7)Mg11Nb cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, and faces with two equivalent Nb(1)Cs2Mg10 cuboctahedra. In the fourth Mg site, Mg(4) is bonded to two equivalent Mg(1); two equivalent Mg(2); two equivalent Mg(4); two Mg(5,5); two equivalent Mg(6); and two equivalent Mg(7) atoms to form MgMg12 cuboctahedra that share corners with four equivalent Cs(1)Mg10Nb2 cuboctahedra; corners with four equivalent Mg(3)Cs2Mg8Nb2 cuboctahedra; corners with four equivalent Nb(1)Cs2Mg10 cuboctahedra; corners with six Mg(4,4)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)CsMg11 cuboctahedra; edges with four equivalent Mg(7)Mg11Nb cuboctahedra; faces with two equivalent Mg(3)Cs2Mg8Nb2 cuboctahedra; faces with two equivalent Mg(6)CsMg11 cuboctahedra; faces with two equivalent Mg(7)Mg11Nb cuboctahedra; faces with two equivalent Mg(1)Mg12 cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; and faces with two equivalent Mg(4)Mg12 cuboctahedra. In the fifth Mg site, Mg(5) is bonded in a 12-coordinate geometry to one Cs(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 Nb(1) atom. In the sixth Mg site, Mg(5) is bonded in a 12-coordinate geometry to one Cs(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 Nb(1) atom. In the seventh Mg site, Mg(6) is bonded to one Cs(1); one Mg(1); two Mg(3,3); two equivalent Mg(4); two equivalent Mg(7); and four Mg(5,5) atoms to form distorted MgCsMg11 cuboctahedra that share corners with four equivalent Mg(7)Mg11Nb cuboctahedra; corners with six equivalent Mg(6)CsMg11 cuboctahedra; edges with two equivalent Cs(1)Mg10Nb2 cuboctahedra; edges with two equivalent Mg(7)Mg11Nb cuboctahedra; edges with two equivalent Mg(1)Mg12 cuboctahedra; edges with four Mg(3,3)Cs2Mg8Nb2 cuboctahedra; edges with four Mg(4,4)Mg12 cuboctahedra;  a faceface with one Cs(1)Mg10Nb2 cuboctahedra;  a faceface with one Mg(1)Mg12 cuboctahedra; faces with two Mg(3,3)Cs2Mg8Nb2 cuboctahedra; faces with two equivalent Mg(6)CsMg11 cuboctahedra; faces with two equivalent Mg(7)Mg11Nb cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with three equivalent Mg(2)Mg12 cuboctahedra; and faces with three equivalent Nb(1)Cs2Mg10 cuboctahedra. In the eighth Mg site, Mg(7) is bonded to one Mg(2); two Mg(3,3); two equivalent Mg(4); two equivalent Mg(6); four Mg(5,5); and one Nb(1) atom to form distorted MgMg11Nb cuboctahedra that share corners with four equivalent Mg(6)CsMg11 cuboctahedra; corners with six equivalent Mg(7)Mg11Nb cuboctahedra; edges with two equivalent Mg(6)CsMg11 cuboctahedra; edges with two equivalent Mg(2)Mg12 cuboctahedra; edges with two equivalent Nb(1)Cs2Mg10 cuboctahedra; edges with four Mg(3,3)Cs2Mg8Nb2 cuboctahedra; edges with four Mg(4,4)Mg12 cuboctahedra;  a faceface with one Mg(2)Mg12 cuboctahedra;  a faceface with one Nb(1)Cs2Mg10 cuboctahedra; faces with two Mg(3,3)Cs2Mg8Nb2 cuboctahedra; faces with two equivalent Mg(6)CsMg11 cuboctahedra; faces with two equivalent Mg(7)Mg11Nb cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with three equivalent Cs(1)Mg10Nb2 cuboctahedra; and faces with three equivalent Mg(1)Mg12 cuboctahedra. In the ninth 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 Cs(1)Mg10Nb2 cuboctahedra; corners with four equivalent Mg(3)Cs2Mg8Nb2 cuboctahedra; corners with four equivalent Nb(1)Cs2Mg10 cuboctahedra; corners with six Mg(4,4)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)CsMg11 cuboctahedra; edges with four equivalent Mg(7)Mg11Nb cuboctahedra; faces with two equivalent Mg(3)Cs2Mg8Nb2 cuboctahedra; faces with two equivalent Mg(6)CsMg11 cuboctahedra; faces with two equivalent Mg(7)Mg11Nb cuboctahedra; faces with two equivalent Mg(1)Mg12 cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; and faces with two equivalent Mg(4)Mg12 cuboctahedra. In the tenth Mg site, Mg(3) is bonded to two equivalent Cs(1); two equivalent Mg(3); two Mg(5,5); two equivalent Mg(6); two equivalent Mg(7); and two equivalent Nb(1) atoms to form distorted MgCs2Mg8Nb2 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)Cs2Mg8Nb2 cuboctahedra; edges with two equivalent Cs(1)Mg10Nb2 cuboctahedra; edges with two equivalent Mg(3)Cs2Mg8Nb2 cuboctahedra; edges with two equivalent Nb(1)Cs2Mg10 cuboctahedra; edges with four equivalent Mg(6)CsMg11 cuboctahedra; edges with four equivalent Mg(7)Mg11Nb cuboctahedra; faces with two equivalent Cs(1)Mg10Nb2 cuboctahedra; faces with two equivalent Mg(3)Cs2Mg8Nb2 cuboctahedra; faces with two equivalent Mg(6)CsMg11 cuboctahedra; faces with two equivalent Mg(7)Mg11Nb cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; and faces with two equivalent Nb(1)Cs2Mg10 cuboctahedra. In the eleventh Mg site, Mg(5) is bonded in a 12-coordinate geometry to one Cs(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 Nb(1) atom. Nb(1) is bonded to two equivalent Cs(1); two equivalent Mg(7); four Mg(3,3); and four equivalent Mg(5) atoms to form NbCs2Mg10 cuboctahedra that share corners with four equivalent Mg(1)Mg12 cuboctahedra; corners with six equivalent Nb(1)Cs2Mg10 cuboctahedra; corners with eight Mg(4,4)Mg12 cuboctahedra; edges with two equivalent Cs(1)Mg10Nb2 cuboctahedra; edges with four Mg(3,3)Cs2Mg8Nb2 cuboctahedra; edges with four equivalent Mg(7)Mg11Nb cuboctahedra; faces with two equivalent Cs(1)Mg10Nb2 cuboctahedra; faces with two equivalent Mg(7)Mg11Nb cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; faces with four Mg(3,3)Cs2Mg8Nb2 cuboctahedra; and faces with six equivalent Mg(6)CsMg11 cuboctahedra. is represented by the CIF card [CIF]
data_CsMg14Nb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.477
_cell_length_b   6.590
_cell_length_c   10.490
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.579
_symmetry_Int_Tables_number   1
_cell_volume   385.448
_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
  Cs  Cs0  1  0.161  0.330  0.125  1.0
  Mg  Mg1  1  0.170  0.335  0.625  1.0
  Mg  Mg2  1  0.165  0.832  0.625  1.0
  Mg  Mg3  1  0.664  0.332  0.125  1.0
  Mg  Mg4  1  0.666  0.338  0.625  1.0
  Mg  Mg5  1  0.664  0.833  0.125  1.0
  Mg  Mg6  1  0.666  0.828  0.625  1.0
  Mg  Mg7  1  0.334  0.150  0.384  1.0
  Mg  Mg8  1  0.334  0.150  0.866  1.0
  Mg  Mg9  1  0.334  0.683  0.384  1.0
  Mg  Mg10  1  0.334  0.683  0.866  1.0
  Mg  Mg11  1  0.818  0.159  0.394  1.0
  Mg  Mg12  1  0.818  0.159  0.856  1.0
  Mg  Mg13  1  0.843  0.671  0.366  1.0
  Mg  Mg14  1  0.843  0.671  0.884  1.0
  Nb  Nb15  1  0.186  0.843  0.125  1.0
[/CIF]
.
The crystal structure described by CsMg14Nb crystallizes in the orthorhombic Amm2 space group. Cs(1) is bonded to two equivalent Mg(6); four Mg(3,3); four equivalent Mg(5); and two equivalent Nb(1) atoms to form CsMg10Nb2 cuboctahedra that share corners with four equivalent Mg(2)Mg12 cuboctahedra; corners with six equivalent Cs(1)Mg10Nb2 cuboctahedra; corners with eight Mg(4,4)Mg12 cuboctahedra; edges with two equivalent Nb(1)Cs2Mg10 cuboctahedra; edges with four Mg(3,3)Cs2Mg8Nb2 cuboctahedra; edges with four equivalent Mg(6)CsMg11 cuboctahedra; faces with two equivalent Mg(6)CsMg11 cuboctahedra; faces with two equivalent Mg(1)Mg12 cuboctahedra; faces with two equivalent Nb(1)Cs2Mg10 cuboctahedra; faces with four Mg(3,3)Cs2Mg8Nb2 cuboctahedra; and faces with six equivalent Mg(7)Mg11Nb cuboctahedra. There are eleven inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to two equivalent Mg(2); two equivalent Mg(6); four Mg(4,4); and four equivalent Mg(5) atoms to form MgMg12 cuboctahedra that share corners with four equivalent Nb(1)Cs2Mg10 cuboctahedra; corners with six equivalent Mg(1)Mg12 cuboctahedra; corners with eight Mg(3,3)Cs2Mg8Nb2 cuboctahedra; edges with two equivalent Mg(2)Mg12 cuboctahedra; edges with four equivalent Mg(6)CsMg11 cuboctahedra; edges with four Mg(4,4)Mg12 cuboctahedra; faces with two equivalent Cs(1)Mg10Nb2 cuboctahedra; faces with two equivalent Mg(6)CsMg11 cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; faces with four Mg(4,4)Mg12 cuboctahedra; and faces with six equivalent Mg(7)Mg11Nb cuboctahedra. In the second Mg site, Mg(2) is bonded to two equivalent Mg(1); two equivalent Mg(7); four Mg(4,4); and four equivalent Mg(5) atoms to form MgMg12 cuboctahedra that share corners with four equivalent Cs(1)Mg10Nb2 cuboctahedra; corners with six equivalent Mg(2)Mg12 cuboctahedra; corners with eight Mg(3,3)Cs2Mg8Nb2 cuboctahedra; edges with two equivalent Mg(1)Mg12 cuboctahedra; edges with four equivalent Mg(7)Mg11Nb cuboctahedra; edges with four Mg(4,4)Mg12 cuboctahedra; faces with two equivalent Mg(7)Mg11Nb cuboctahedra; faces with two equivalent Mg(1)Mg12 cuboctahedra; faces with two equivalent Nb(1)Cs2Mg10 cuboctahedra; faces with four Mg(4,4)Mg12 cuboctahedra; and faces with six equivalent Mg(6)CsMg11 cuboctahedra. In the third Mg site, Mg(3) is bonded to two equivalent Cs(1); two equivalent Mg(3); two Mg(5,5); two equivalent Mg(6); two equivalent Mg(7); and two equivalent Nb(1) atoms to form distorted MgCs2Mg8Nb2 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)Cs2Mg8Nb2 cuboctahedra, edges with two equivalent Cs(1)Mg10Nb2 cuboctahedra, edges with two equivalent Mg(3)Cs2Mg8Nb2 cuboctahedra, edges with two equivalent Nb(1)Cs2Mg10 cuboctahedra, edges with four equivalent Mg(6)CsMg11 cuboctahedra, edges with four equivalent Mg(7)Mg11Nb cuboctahedra, faces with two equivalent Cs(1)Mg10Nb2 cuboctahedra, faces with two equivalent Mg(3)Cs2Mg8Nb2 cuboctahedra, faces with two equivalent Mg(6)CsMg11 cuboctahedra, faces with two equivalent Mg(7)Mg11Nb cuboctahedra, faces with two equivalent Mg(4)Mg12 cuboctahedra, and faces with two equivalent Nb(1)Cs2Mg10 cuboctahedra. In the fourth Mg site, Mg(4) is bonded to two equivalent Mg(1); two equivalent Mg(2); two equivalent Mg(4); two Mg(5,5); two equivalent Mg(6); and two equivalent Mg(7) atoms to form MgMg12 cuboctahedra that share corners with four equivalent Cs(1)Mg10Nb2 cuboctahedra; corners with four equivalent Mg(3)Cs2Mg8Nb2 cuboctahedra; corners with four equivalent Nb(1)Cs2Mg10 cuboctahedra; corners with six Mg(4,4)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)CsMg11 cuboctahedra; edges with four equivalent Mg(7)Mg11Nb cuboctahedra; faces with two equivalent Mg(3)Cs2Mg8Nb2 cuboctahedra; faces with two equivalent Mg(6)CsMg11 cuboctahedra; faces with two equivalent Mg(7)Mg11Nb cuboctahedra; faces with two equivalent Mg(1)Mg12 cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; and faces with two equivalent Mg(4)Mg12 cuboctahedra. In the fifth Mg site, Mg(5) is bonded in a 12-coordinate geometry to one Cs(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 Nb(1) atom. In the sixth Mg site, Mg(5) is bonded in a 12-coordinate geometry to one Cs(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 Nb(1) atom. In the seventh Mg site, Mg(6) is bonded to one Cs(1); one Mg(1); two Mg(3,3); two equivalent Mg(4); two equivalent Mg(7); and four Mg(5,5) atoms to form distorted MgCsMg11 cuboctahedra that share corners with four equivalent Mg(7)Mg11Nb cuboctahedra; corners with six equivalent Mg(6)CsMg11 cuboctahedra; edges with two equivalent Cs(1)Mg10Nb2 cuboctahedra; edges with two equivalent Mg(7)Mg11Nb cuboctahedra; edges with two equivalent Mg(1)Mg12 cuboctahedra; edges with four Mg(3,3)Cs2Mg8Nb2 cuboctahedra; edges with four Mg(4,4)Mg12 cuboctahedra;  a faceface with one Cs(1)Mg10Nb2 cuboctahedra;  a faceface with one Mg(1)Mg12 cuboctahedra; faces with two Mg(3,3)Cs2Mg8Nb2 cuboctahedra; faces with two equivalent Mg(6)CsMg11 cuboctahedra; faces with two equivalent Mg(7)Mg11Nb cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with three equivalent Mg(2)Mg12 cuboctahedra; and faces with three equivalent Nb(1)Cs2Mg10 cuboctahedra. In the eighth Mg site, Mg(7) is bonded to one Mg(2); two Mg(3,3); two equivalent Mg(4); two equivalent Mg(6); four Mg(5,5); and one Nb(1) atom to form distorted MgMg11Nb cuboctahedra that share corners with four equivalent Mg(6)CsMg11 cuboctahedra; corners with six equivalent Mg(7)Mg11Nb cuboctahedra; edges with two equivalent Mg(6)CsMg11 cuboctahedra; edges with two equivalent Mg(2)Mg12 cuboctahedra; edges with two equivalent Nb(1)Cs2Mg10 cuboctahedra; edges with four Mg(3,3)Cs2Mg8Nb2 cuboctahedra; edges with four Mg(4,4)Mg12 cuboctahedra;  a faceface with one Mg(2)Mg12 cuboctahedra;  a faceface with one Nb(1)Cs2Mg10 cuboctahedra; faces with two Mg(3,3)Cs2Mg8Nb2 cuboctahedra; faces with two equivalent Mg(6)CsMg11 cuboctahedra; faces with two equivalent Mg(7)Mg11Nb cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with three equivalent Cs(1)Mg10Nb2 cuboctahedra; and faces with three equivalent Mg(1)Mg12 cuboctahedra. In the ninth 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 Cs(1)Mg10Nb2 cuboctahedra; corners with four equivalent Mg(3)Cs2Mg8Nb2 cuboctahedra; corners with four equivalent Nb(1)Cs2Mg10 cuboctahedra; corners with six Mg(4,4)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)CsMg11 cuboctahedra; edges with four equivalent Mg(7)Mg11Nb cuboctahedra; faces with two equivalent Mg(3)Cs2Mg8Nb2 cuboctahedra; faces with two equivalent Mg(6)CsMg11 cuboctahedra; faces with two equivalent Mg(7)Mg11Nb cuboctahedra; faces with two equivalent Mg(1)Mg12 cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; and faces with two equivalent Mg(4)Mg12 cuboctahedra. In the tenth Mg site, Mg(3) is bonded to two equivalent Cs(1); two equivalent Mg(3); two Mg(5,5); two equivalent Mg(6); two equivalent Mg(7); and two equivalent Nb(1) atoms to form distorted MgCs2Mg8Nb2 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)Cs2Mg8Nb2 cuboctahedra; edges with two equivalent Cs(1)Mg10Nb2 cuboctahedra; edges with two equivalent Mg(3)Cs2Mg8Nb2 cuboctahedra; edges with two equivalent Nb(1)Cs2Mg10 cuboctahedra; edges with four equivalent Mg(6)CsMg11 cuboctahedra; edges with four equivalent Mg(7)Mg11Nb cuboctahedra; faces with two equivalent Cs(1)Mg10Nb2 cuboctahedra; faces with two equivalent Mg(3)Cs2Mg8Nb2 cuboctahedra; faces with two equivalent Mg(6)CsMg11 cuboctahedra; faces with two equivalent Mg(7)Mg11Nb cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; and faces with two equivalent Nb(1)Cs2Mg10 cuboctahedra. In the eleventh Mg site, Mg(5) is bonded in a 12-coordinate geometry to one Cs(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 Nb(1) atom. Nb(1) is bonded to two equivalent Cs(1); two equivalent Mg(7); four Mg(3,3); and four equivalent Mg(5) atoms to form NbCs2Mg10 cuboctahedra that share corners with four equivalent Mg(1)Mg12 cuboctahedra; corners with six equivalent Nb(1)Cs2Mg10 cuboctahedra; corners with eight Mg(4,4)Mg12 cuboctahedra; edges with two equivalent Cs(1)Mg10Nb2 cuboctahedra; edges with four Mg(3,3)Cs2Mg8Nb2 cuboctahedra; edges with four equivalent Mg(7)Mg11Nb cuboctahedra; faces with two equivalent Cs(1)Mg10Nb2 cuboctahedra; faces with two equivalent Mg(7)Mg11Nb cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; faces with four Mg(3,3)Cs2Mg8Nb2 cuboctahedra; and faces with six equivalent Mg(6)CsMg11 cuboctahedra. is represented by the CIF card [CIF]
data_CsMg14Nb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.477
_cell_length_b   6.590
_cell_length_c   10.490
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.579
_symmetry_Int_Tables_number   1
_cell_volume   385.448
_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
  Cs  Cs0  1  0.161  0.330  0.125  1.0
  Mg  Mg1  1  0.170  0.335  0.625  1.0
  Mg  Mg2  1  0.165  0.832  0.625  1.0
  Mg  Mg3  1  0.664  0.332  0.125  1.0
  Mg  Mg4  1  0.666  0.338  0.625  1.0
  Mg  Mg5  1  0.664  0.833  0.125  1.0
  Mg  Mg6  1  0.666  0.828  0.625  1.0
  Mg  Mg7  1  0.334  0.150  0.384  1.0
  Mg  Mg8  1  0.334  0.150  0.866  1.0
  Mg  Mg9  1  0.334  0.683  0.384  1.0
  Mg  Mg10  1  0.334  0.683  0.866  1.0
  Mg  Mg11  1  0.818  0.159  0.394  1.0
  Mg  Mg12  1  0.818  0.159  0.856  1.0
  Mg  Mg13  1  0.843  0.671  0.366  1.0
  Mg  Mg14  1  0.843  0.671  0.884  1.0
  Nb  Nb15  1  0.186  0.843  0.125  1.0
[/CIF]
.