The crystal structure described by RbMg14La crystallizes in the orthorhombic Amm2 space group. Rb(1) is bonded to two equivalent Mg(7); four Mg(3,3,3); four Mg(5,5); and two equivalent La(1) atoms to form RbLa2Mg10 cuboctahedra that share corners with four equivalent Mg(1)Mg12 cuboctahedra; corners with six equivalent Rb(1)La2Mg10 cuboctahedra; corners with eight equivalent Mg(4)Mg12 cuboctahedra; edges with two equivalent La(1)Rb2Mg10 cuboctahedra; edges with four Mg(3,3,3)Rb2La2Mg8 cuboctahedra; edges with eight Mg(5,5)RbLaMg10 cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; faces with two equivalent La(1)Rb2Mg10 cuboctahedra; faces with four Mg(3,3,3)Rb2La2Mg8 cuboctahedra; faces with four Mg(5,5)RbLaMg10 cuboctahedra; and faces with six equivalent Mg(6)LaMg11 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 Mg(5,5) atoms to form MgMg12 cuboctahedra that share corners with four equivalent Rb(1)La2Mg10 cuboctahedra; corners with six equivalent Mg(1)Mg12 cuboctahedra; corners with eight Mg(3,3,3)Rb2La2Mg8 cuboctahedra; edges with two equivalent Mg(2)Mg12 cuboctahedra; edges with four equivalent Mg(6)LaMg11 cuboctahedra; edges with four equivalent Mg(4)Mg12 cuboctahedra; edges with eight Mg(5,5)RbLaMg10 cuboctahedra; faces with two equivalent Mg(6)LaMg11 cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; faces with two equivalent La(1)Rb2Mg10 cuboctahedra; faces with four equivalent Mg(4)Mg12 cuboctahedra; and faces with four Mg(5,5)RbLaMg10 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 Mg(5,5) atoms to form MgMg12 cuboctahedra that share corners with four equivalent La(1)Rb2Mg10 cuboctahedra; corners with six equivalent Mg(2)Mg12 cuboctahedra; corners with eight Mg(3,3,3)Rb2La2Mg8 cuboctahedra; edges with two equivalent Mg(1)Mg12 cuboctahedra; edges with four equivalent Mg(4)Mg12 cuboctahedra; edges with eight Mg(5,5)RbLaMg10 cuboctahedra; faces with two equivalent Rb(1)La2Mg10 cuboctahedra; faces with two equivalent Mg(1)Mg12 cuboctahedra; faces with four equivalent Mg(4)Mg12 cuboctahedra; faces with four Mg(5,5)RbLaMg10 cuboctahedra; and faces with six equivalent Mg(6)LaMg11 cuboctahedra. In the third Mg site, Mg(3) is bonded to two equivalent Rb(1); two equivalent Mg(3); two Mg(5,5); two equivalent Mg(6); two equivalent Mg(7); and two equivalent La(1) atoms to form distorted MgRb2La2Mg8 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)Rb2La2Mg8 cuboctahedra; edges with two equivalent Rb(1)La2Mg10 cuboctahedra; edges with two equivalent Mg(3)Rb2La2Mg8 cuboctahedra; edges with two equivalent La(1)Rb2Mg10 cuboctahedra; edges with four equivalent Mg(6)LaMg11 cuboctahedra; edges with four equivalent Mg(5)RbLaMg10 cuboctahedra; faces with two equivalent Rb(1)La2Mg10 cuboctahedra; faces with two equivalent Mg(6)LaMg11 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with two equivalent Mg(3)Rb2La2Mg8 cuboctahedra; faces with two equivalent La(1)Rb2Mg10 cuboctahedra; and faces with eight Mg(5,5)RbLaMg10 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 Rb(1)La2Mg10 cuboctahedra; corners with four equivalent Mg(3)Rb2La2Mg8 cuboctahedra; corners with four equivalent La(1)Rb2Mg10 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)LaMg11 cuboctahedra; edges with four equivalent Mg(5)RbLaMg10 cuboctahedra; faces with two equivalent Mg(6)LaMg11 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)Rb2La2Mg8 cuboctahedra; and faces with eight Mg(5,5)RbLaMg10 cuboctahedra. In the fifth Mg site, Mg(5) is bonded to one Rb(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 La(1) atom to form distorted MgRbLaMg10 cuboctahedra that share corners with four equivalent Mg(6)LaMg11 cuboctahedra; corners with ten Mg(5,5)RbLaMg10 cuboctahedra; edges with two equivalent Rb(1)La2Mg10 cuboctahedra; edges with two equivalent Mg(6)LaMg11 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)Rb2La2Mg8 cuboctahedra; edges with two equivalent Mg(5)RbLaMg10 cuboctahedra; edges with two equivalent La(1)Rb2Mg10 cuboctahedra;  a faceface with one Rb(1)La2Mg10 cuboctahedra;  a faceface with one Mg(1)Mg12 cuboctahedra;  a faceface with one Mg(2)Mg12 cuboctahedra;  a faceface with one La(1)Rb2Mg10 cuboctahedra; faces with two equivalent Mg(6)LaMg11 cuboctahedra; faces with four equivalent Mg(4)Mg12 cuboctahedra; faces with four Mg(3,3)Rb2La2Mg8 cuboctahedra; and faces with four equivalent Mg(5)RbLaMg10 cuboctahedra. In the sixth Mg site, Mg(5) is bonded to one Rb(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 La(1) atom to form distorted MgRbLaMg10 cuboctahedra that share corners with four equivalent Mg(6)LaMg11 cuboctahedra; corners with ten equivalent Mg(5)RbLaMg10 cuboctahedra; edges with two equivalent Rb(1)La2Mg10 cuboctahedra; edges with two equivalent Mg(6)LaMg11 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)Rb2La2Mg8 cuboctahedra; edges with two equivalent Mg(5)RbLaMg10 cuboctahedra; edges with two equivalent La(1)Rb2Mg10 cuboctahedra;  a faceface with one Rb(1)La2Mg10 cuboctahedra;  a faceface with one Mg(1)Mg12 cuboctahedra;  a faceface with one Mg(2)Mg12 cuboctahedra;  a faceface with one La(1)Rb2Mg10 cuboctahedra; faces with two equivalent Mg(6)LaMg11 cuboctahedra; faces with four equivalent Mg(4)Mg12 cuboctahedra; faces with four Mg(3,3)Rb2La2Mg8 cuboctahedra; and faces with four equivalent Mg(5)RbLaMg10 cuboctahedra. In the seventh Mg site, Mg(6) is bonded to one Mg(1); two equivalent Mg(3); two equivalent Mg(4); two equivalent Mg(7); four Mg(5,5); and one La(1) atom to form distorted MgLaMg11 cuboctahedra that share corners with six equivalent Mg(6)LaMg11 cuboctahedra; corners with eight Mg(5,5)RbLaMg10 cuboctahedra; edges with two equivalent Mg(1)Mg12 cuboctahedra; edges with two equivalent La(1)Rb2Mg10 cuboctahedra; edges with four equivalent Mg(4)Mg12 cuboctahedra; edges with four Mg(3,3,3)Rb2La2Mg8 cuboctahedra; edges with four Mg(5,5)RbLaMg10 cuboctahedra;  a faceface with one Mg(1)Mg12 cuboctahedra;  a faceface with one La(1)Rb2Mg10 cuboctahedra; faces with two equivalent Mg(6)LaMg11 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with two equivalent Mg(3)Rb2La2Mg8 cuboctahedra; faces with three equivalent Rb(1)La2Mg10 cuboctahedra; faces with three equivalent Mg(2)Mg12 cuboctahedra; and faces with four Mg(5,5)RbLaMg10 cuboctahedra. In the eighth Mg site, Mg(7) is bonded in a 12-coordinate geometry to one Rb(1); one Mg(2); two equivalent Mg(3); two equivalent Mg(4); two equivalent Mg(6); and four Mg(5,5) atoms. In the ninth Mg site, Mg(3) is bonded to two equivalent Rb(1), two equivalent Mg(3), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), and two equivalent La(1) atoms to form distorted MgRb2La2Mg8 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)Rb2La2Mg8 cuboctahedra; edges with two equivalent Rb(1)La2Mg10 cuboctahedra; edges with two equivalent Mg(3)Rb2La2Mg8 cuboctahedra; edges with two equivalent La(1)Rb2Mg10 cuboctahedra; edges with four equivalent Mg(6)LaMg11 cuboctahedra; edges with four Mg(5,5)RbLaMg10 cuboctahedra; faces with two equivalent Rb(1)La2Mg10 cuboctahedra; faces with two equivalent Mg(6)LaMg11 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with two equivalent Mg(3)Rb2La2Mg8 cuboctahedra; faces with two equivalent La(1)Rb2Mg10 cuboctahedra; and faces with eight Mg(5,5)RbLaMg10 cuboctahedra. In the tenth Mg site, Mg(3) is bonded to two equivalent Rb(1); two equivalent Mg(3); two Mg(5,5); two equivalent Mg(6); two equivalent Mg(7); and two equivalent La(1) atoms to form distorted MgRb2La2Mg8 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)Rb2La2Mg8 cuboctahedra; edges with two equivalent Rb(1)La2Mg10 cuboctahedra; edges with two equivalent Mg(3)Rb2La2Mg8 cuboctahedra; edges with two equivalent La(1)Rb2Mg10 cuboctahedra; edges with four equivalent Mg(6)LaMg11 cuboctahedra; edges with four Mg(5,5)RbLaMg10 cuboctahedra; faces with two equivalent Rb(1)La2Mg10 cuboctahedra; faces with two equivalent Mg(6)LaMg11 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with two equivalent Mg(3)Rb2La2Mg8 cuboctahedra; faces with two equivalent La(1)Rb2Mg10 cuboctahedra; and faces with eight Mg(5,5)RbLaMg10 cuboctahedra. La(1) is bonded to two equivalent Rb(1); two equivalent Mg(6); four Mg(3,3,3); and four Mg(5,5) atoms to form LaRb2Mg10 cuboctahedra that share corners with four equivalent Mg(2)Mg12 cuboctahedra; corners with six equivalent La(1)Rb2Mg10 cuboctahedra; corners with eight equivalent Mg(4)Mg12 cuboctahedra; edges with two equivalent Rb(1)La2Mg10 cuboctahedra; edges with four equivalent Mg(6)LaMg11 cuboctahedra; edges with four Mg(3,3,3)Rb2La2Mg8 cuboctahedra; edges with eight Mg(5,5)RbLaMg10 cuboctahedra; faces with two equivalent Rb(1)La2Mg10 cuboctahedra; faces with two equivalent Mg(6)LaMg11 cuboctahedra; faces with two equivalent Mg(1)Mg12 cuboctahedra; faces with four Mg(3,3,3)Rb2La2Mg8 cuboctahedra; and faces with four Mg(5,5)RbLaMg10 cuboctahedra. is represented by the CIF card [CIF]
data_RbLaMg14
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.725
_cell_length_b   6.665
_cell_length_c   10.729
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.705
_symmetry_Int_Tables_number   1
_cell_volume   417.652
_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
  Rb  Rb0  1  0.169  0.834  0.125  1.0
  La  La1  1  0.173  0.337  0.125  1.0
  Mg  Mg2  1  0.162  0.331  0.625  1.0
  Mg  Mg3  1  0.165  0.832  0.625  1.0
  Mg  Mg4  1  0.665  0.330  0.125  1.0
  Mg  Mg5  1  0.668  0.334  0.625  1.0
  Mg  Mg6  1  0.665  0.836  0.125  1.0
  Mg  Mg7  1  0.668  0.835  0.625  1.0
  Mg  Mg8  1  0.341  0.177  0.394  1.0
  Mg  Mg9  1  0.341  0.177  0.856  1.0
  Mg  Mg10  1  0.341  0.664  0.394  1.0
  Mg  Mg11  1  0.341  0.664  0.856  1.0
  Mg  Mg12  1  0.830  0.165  0.379  1.0
  Mg  Mg13  1  0.830  0.165  0.871  1.0
  Mg  Mg14  1  0.821  0.660  0.385  1.0
  Mg  Mg15  1  0.821  0.660  0.865  1.0
[/CIF]
.
The crystal structure described by RbMg14La crystallizes in the orthorhombic Amm2 space group. Rb(1) is bonded to two equivalent Mg(7); four Mg(3,3,3); four Mg(5,5); and two equivalent La(1) atoms to form RbLa2Mg10 cuboctahedra that share corners with four equivalent Mg(1)Mg12 cuboctahedra; corners with six equivalent Rb(1)La2Mg10 cuboctahedra; corners with eight equivalent Mg(4)Mg12 cuboctahedra; edges with two equivalent La(1)Rb2Mg10 cuboctahedra; edges with four Mg(3,3,3)Rb2La2Mg8 cuboctahedra; edges with eight Mg(5,5)RbLaMg10 cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; faces with two equivalent La(1)Rb2Mg10 cuboctahedra; faces with four Mg(3,3,3)Rb2La2Mg8 cuboctahedra; faces with four Mg(5,5)RbLaMg10 cuboctahedra; and faces with six equivalent Mg(6)LaMg11 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 Mg(5,5) atoms to form MgMg12 cuboctahedra that share corners with four equivalent Rb(1)La2Mg10 cuboctahedra; corners with six equivalent Mg(1)Mg12 cuboctahedra; corners with eight Mg(3,3,3)Rb2La2Mg8 cuboctahedra; edges with two equivalent Mg(2)Mg12 cuboctahedra; edges with four equivalent Mg(6)LaMg11 cuboctahedra; edges with four equivalent Mg(4)Mg12 cuboctahedra; edges with eight Mg(5,5)RbLaMg10 cuboctahedra; faces with two equivalent Mg(6)LaMg11 cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; faces with two equivalent La(1)Rb2Mg10 cuboctahedra; faces with four equivalent Mg(4)Mg12 cuboctahedra; and faces with four Mg(5,5)RbLaMg10 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 Mg(5,5) atoms to form MgMg12 cuboctahedra that share corners with four equivalent La(1)Rb2Mg10 cuboctahedra; corners with six equivalent Mg(2)Mg12 cuboctahedra; corners with eight Mg(3,3,3)Rb2La2Mg8 cuboctahedra; edges with two equivalent Mg(1)Mg12 cuboctahedra; edges with four equivalent Mg(4)Mg12 cuboctahedra; edges with eight Mg(5,5)RbLaMg10 cuboctahedra; faces with two equivalent Rb(1)La2Mg10 cuboctahedra; faces with two equivalent Mg(1)Mg12 cuboctahedra; faces with four equivalent Mg(4)Mg12 cuboctahedra; faces with four Mg(5,5)RbLaMg10 cuboctahedra; and faces with six equivalent Mg(6)LaMg11 cuboctahedra. In the third Mg site, Mg(3) is bonded to two equivalent Rb(1); two equivalent Mg(3); two Mg(5,5); two equivalent Mg(6); two equivalent Mg(7); and two equivalent La(1) atoms to form distorted MgRb2La2Mg8 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)Rb2La2Mg8 cuboctahedra; edges with two equivalent Rb(1)La2Mg10 cuboctahedra; edges with two equivalent Mg(3)Rb2La2Mg8 cuboctahedra; edges with two equivalent La(1)Rb2Mg10 cuboctahedra; edges with four equivalent Mg(6)LaMg11 cuboctahedra; edges with four equivalent Mg(5)RbLaMg10 cuboctahedra; faces with two equivalent Rb(1)La2Mg10 cuboctahedra; faces with two equivalent Mg(6)LaMg11 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with two equivalent Mg(3)Rb2La2Mg8 cuboctahedra; faces with two equivalent La(1)Rb2Mg10 cuboctahedra; and faces with eight Mg(5,5)RbLaMg10 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 Rb(1)La2Mg10 cuboctahedra; corners with four equivalent Mg(3)Rb2La2Mg8 cuboctahedra; corners with four equivalent La(1)Rb2Mg10 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)LaMg11 cuboctahedra; edges with four equivalent Mg(5)RbLaMg10 cuboctahedra; faces with two equivalent Mg(6)LaMg11 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)Rb2La2Mg8 cuboctahedra; and faces with eight Mg(5,5)RbLaMg10 cuboctahedra. In the fifth Mg site, Mg(5) is bonded to one Rb(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 La(1) atom to form distorted MgRbLaMg10 cuboctahedra that share corners with four equivalent Mg(6)LaMg11 cuboctahedra; corners with ten Mg(5,5)RbLaMg10 cuboctahedra; edges with two equivalent Rb(1)La2Mg10 cuboctahedra; edges with two equivalent Mg(6)LaMg11 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)Rb2La2Mg8 cuboctahedra; edges with two equivalent Mg(5)RbLaMg10 cuboctahedra; edges with two equivalent La(1)Rb2Mg10 cuboctahedra;  a faceface with one Rb(1)La2Mg10 cuboctahedra;  a faceface with one Mg(1)Mg12 cuboctahedra;  a faceface with one Mg(2)Mg12 cuboctahedra;  a faceface with one La(1)Rb2Mg10 cuboctahedra; faces with two equivalent Mg(6)LaMg11 cuboctahedra; faces with four equivalent Mg(4)Mg12 cuboctahedra; faces with four Mg(3,3)Rb2La2Mg8 cuboctahedra; and faces with four equivalent Mg(5)RbLaMg10 cuboctahedra. In the sixth Mg site, Mg(5) is bonded to one Rb(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 La(1) atom to form distorted MgRbLaMg10 cuboctahedra that share corners with four equivalent Mg(6)LaMg11 cuboctahedra; corners with ten equivalent Mg(5)RbLaMg10 cuboctahedra; edges with two equivalent Rb(1)La2Mg10 cuboctahedra; edges with two equivalent Mg(6)LaMg11 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)Rb2La2Mg8 cuboctahedra; edges with two equivalent Mg(5)RbLaMg10 cuboctahedra; edges with two equivalent La(1)Rb2Mg10 cuboctahedra;  a faceface with one Rb(1)La2Mg10 cuboctahedra;  a faceface with one Mg(1)Mg12 cuboctahedra;  a faceface with one Mg(2)Mg12 cuboctahedra;  a faceface with one La(1)Rb2Mg10 cuboctahedra; faces with two equivalent Mg(6)LaMg11 cuboctahedra; faces with four equivalent Mg(4)Mg12 cuboctahedra; faces with four Mg(3,3)Rb2La2Mg8 cuboctahedra; and faces with four equivalent Mg(5)RbLaMg10 cuboctahedra. In the seventh Mg site, Mg(6) is bonded to one Mg(1); two equivalent Mg(3); two equivalent Mg(4); two equivalent Mg(7); four Mg(5,5); and one La(1) atom to form distorted MgLaMg11 cuboctahedra that share corners with six equivalent Mg(6)LaMg11 cuboctahedra; corners with eight Mg(5,5)RbLaMg10 cuboctahedra; edges with two equivalent Mg(1)Mg12 cuboctahedra; edges with two equivalent La(1)Rb2Mg10 cuboctahedra; edges with four equivalent Mg(4)Mg12 cuboctahedra; edges with four Mg(3,3,3)Rb2La2Mg8 cuboctahedra; edges with four Mg(5,5)RbLaMg10 cuboctahedra;  a faceface with one Mg(1)Mg12 cuboctahedra;  a faceface with one La(1)Rb2Mg10 cuboctahedra; faces with two equivalent Mg(6)LaMg11 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with two equivalent Mg(3)Rb2La2Mg8 cuboctahedra; faces with three equivalent Rb(1)La2Mg10 cuboctahedra; faces with three equivalent Mg(2)Mg12 cuboctahedra; and faces with four Mg(5,5)RbLaMg10 cuboctahedra. In the eighth Mg site, Mg(7) is bonded in a 12-coordinate geometry to one Rb(1); one Mg(2); two equivalent Mg(3); two equivalent Mg(4); two equivalent Mg(6); and four Mg(5,5) atoms. In the ninth Mg site, Mg(3) is bonded to two equivalent Rb(1), two equivalent Mg(3), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), and two equivalent La(1) atoms to form distorted MgRb2La2Mg8 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)Rb2La2Mg8 cuboctahedra; edges with two equivalent Rb(1)La2Mg10 cuboctahedra; edges with two equivalent Mg(3)Rb2La2Mg8 cuboctahedra; edges with two equivalent La(1)Rb2Mg10 cuboctahedra; edges with four equivalent Mg(6)LaMg11 cuboctahedra; edges with four Mg(5,5)RbLaMg10 cuboctahedra; faces with two equivalent Rb(1)La2Mg10 cuboctahedra; faces with two equivalent Mg(6)LaMg11 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with two equivalent Mg(3)Rb2La2Mg8 cuboctahedra; faces with two equivalent La(1)Rb2Mg10 cuboctahedra; and faces with eight Mg(5,5)RbLaMg10 cuboctahedra. In the tenth Mg site, Mg(3) is bonded to two equivalent Rb(1); two equivalent Mg(3); two Mg(5,5); two equivalent Mg(6); two equivalent Mg(7); and two equivalent La(1) atoms to form distorted MgRb2La2Mg8 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)Rb2La2Mg8 cuboctahedra; edges with two equivalent Rb(1)La2Mg10 cuboctahedra; edges with two equivalent Mg(3)Rb2La2Mg8 cuboctahedra; edges with two equivalent La(1)Rb2Mg10 cuboctahedra; edges with four equivalent Mg(6)LaMg11 cuboctahedra; edges with four Mg(5,5)RbLaMg10 cuboctahedra; faces with two equivalent Rb(1)La2Mg10 cuboctahedra; faces with two equivalent Mg(6)LaMg11 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with two equivalent Mg(3)Rb2La2Mg8 cuboctahedra; faces with two equivalent La(1)Rb2Mg10 cuboctahedra; and faces with eight Mg(5,5)RbLaMg10 cuboctahedra. La(1) is bonded to two equivalent Rb(1); two equivalent Mg(6); four Mg(3,3,3); and four Mg(5,5) atoms to form LaRb2Mg10 cuboctahedra that share corners with four equivalent Mg(2)Mg12 cuboctahedra; corners with six equivalent La(1)Rb2Mg10 cuboctahedra; corners with eight equivalent Mg(4)Mg12 cuboctahedra; edges with two equivalent Rb(1)La2Mg10 cuboctahedra; edges with four equivalent Mg(6)LaMg11 cuboctahedra; edges with four Mg(3,3,3)Rb2La2Mg8 cuboctahedra; edges with eight Mg(5,5)RbLaMg10 cuboctahedra; faces with two equivalent Rb(1)La2Mg10 cuboctahedra; faces with two equivalent Mg(6)LaMg11 cuboctahedra; faces with two equivalent Mg(1)Mg12 cuboctahedra; faces with four Mg(3,3,3)Rb2La2Mg8 cuboctahedra; and faces with four Mg(5,5)RbLaMg10 cuboctahedra. is represented by the CIF card [CIF]
data_RbLaMg14
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.725
_cell_length_b   6.665
_cell_length_c   10.729
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.705
_symmetry_Int_Tables_number   1
_cell_volume   417.652
_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
  Rb  Rb0  1  0.169  0.834  0.125  1.0
  La  La1  1  0.173  0.337  0.125  1.0
  Mg  Mg2  1  0.162  0.331  0.625  1.0
  Mg  Mg3  1  0.165  0.832  0.625  1.0
  Mg  Mg4  1  0.665  0.330  0.125  1.0
  Mg  Mg5  1  0.668  0.334  0.625  1.0
  Mg  Mg6  1  0.665  0.836  0.125  1.0
  Mg  Mg7  1  0.668  0.835  0.625  1.0
  Mg  Mg8  1  0.341  0.177  0.394  1.0
  Mg  Mg9  1  0.341  0.177  0.856  1.0
  Mg  Mg10  1  0.341  0.664  0.394  1.0
  Mg  Mg11  1  0.341  0.664  0.856  1.0
  Mg  Mg12  1  0.830  0.165  0.379  1.0
  Mg  Mg13  1  0.830  0.165  0.871  1.0
  Mg  Mg14  1  0.821  0.660  0.385  1.0
  Mg  Mg15  1  0.821  0.660  0.865  1.0
[/CIF]
.