The material described by RbMg14Sb crystallizes in the orthorhombic Amm2 space group. Rb(1) is bonded to two equivalent Mg(6); four Mg(3,3,3); four Mg(5,5); and two equivalent Sb(1) atoms to form RbMg10Sb2 cuboctahedra that share corners with four equivalent Mg(2)Mg12 cuboctahedra; corners with six equivalent Rb(1)Mg10Sb2 cuboctahedra; corners with eight equivalent Mg(4)Mg12 cuboctahedra; edges with two equivalent Sb(1)Rb2Mg10 cuboctahedra; edges with four equivalent Mg(6)RbMg11 cuboctahedra; edges with eight Mg(5,5)RbMg10Sb cuboctahedra; faces with two equivalent Mg(1)Mg12 cuboctahedra; faces with two equivalent Mg(6)RbMg11 cuboctahedra; faces with two equivalent Sb(1)Rb2Mg10 cuboctahedra; and faces with four Mg(5,5)RbMg10Sb 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 Sb(1)Rb2Mg10 cuboctahedra; corners with six equivalent Mg(1)Mg12 cuboctahedra; edges with two equivalent Mg(2)Mg12 cuboctahedra; edges with four equivalent Mg(4)Mg12 cuboctahedra; edges with four equivalent Mg(6)RbMg11 cuboctahedra; edges with eight Mg(5,5)RbMg10Sb cuboctahedra; faces with two equivalent Rb(1)Mg10Sb2 cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; faces with two equivalent Mg(6)RbMg11 cuboctahedra; faces with four equivalent Mg(4)Mg12 cuboctahedra; and faces with four Mg(5,5)RbMg10Sb 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 Rb(1)Mg10Sb2 cuboctahedra; 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 eight Mg(5,5)RbMg10Sb cuboctahedra; faces with two equivalent Mg(1)Mg12 cuboctahedra; faces with two equivalent Sb(1)Rb2Mg10 cuboctahedra; faces with four equivalent Mg(4)Mg12 cuboctahedra; faces with four Mg(5,5)RbMg10Sb cuboctahedra; and faces with six equivalent Mg(6)RbMg11 cuboctahedra. In the third Mg site, Mg(3) is bonded in a 12-coordinate geometry to two equivalent Rb(1), two equivalent Mg(3), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), and two equivalent Sb(1) atoms. 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 Rb(1)Mg10Sb2 cuboctahedra; corners with four equivalent Sb(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 Mg(5,5)RbMg10Sb cuboctahedra; edges with four equivalent Mg(6)RbMg11 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(6)RbMg11 cuboctahedra; and faces with eight Mg(5,5)RbMg10Sb cuboctahedra. In the fifth Mg site, Mg(3) is bonded in a 12-coordinate geometry to two equivalent Rb(1); two equivalent Mg(3); two Mg(5,5); two equivalent Mg(6); two equivalent Mg(7); and two equivalent Sb(1) atoms. 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 Sb(1) atom to form distorted MgRbMg10Sb cuboctahedra that share corners with four equivalent Mg(6)RbMg11 cuboctahedra; corners with ten Mg(5,5)RbMg10Sb cuboctahedra; edges with two equivalent Rb(1)Mg10Sb2 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)RbMg10Sb cuboctahedra; edges with two equivalent Mg(6)RbMg11 cuboctahedra; edges with two equivalent Sb(1)Rb2Mg10 cuboctahedra;  a faceface with one Rb(1)Mg10Sb2 cuboctahedra;  a faceface with one Mg(1)Mg12 cuboctahedra;  a faceface with one Mg(2)Mg12 cuboctahedra;  a faceface with one Sb(1)Rb2Mg10 cuboctahedra; faces with two equivalent Mg(6)RbMg11 cuboctahedra; faces with four equivalent Mg(4)Mg12 cuboctahedra; and faces with four Mg(5,5)RbMg10Sb cuboctahedra. In the seventh 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 Sb(1) atom to form distorted MgRbMg10Sb cuboctahedra that share corners with four equivalent Mg(6)RbMg11 cuboctahedra, corners with ten equivalent Mg(5)RbMg10Sb cuboctahedra, edges with two equivalent Rb(1)Mg10Sb2 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)RbMg10Sb cuboctahedra, edges with two equivalent Mg(6)RbMg11 cuboctahedra, edges with two equivalent Sb(1)Rb2Mg10 cuboctahedra,  a faceface with one Rb(1)Mg10Sb2 cuboctahedra,  a faceface with one Mg(1)Mg12 cuboctahedra,  a faceface with one Mg(2)Mg12 cuboctahedra,  a faceface with one Sb(1)Rb2Mg10 cuboctahedra, faces with two equivalent Mg(6)RbMg11 cuboctahedra, faces with four equivalent Mg(4)Mg12 cuboctahedra, and faces with four equivalent Mg(5)RbMg10Sb cuboctahedra. In the eighth Mg site, Mg(6) is bonded to one Rb(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 MgRbMg11 cuboctahedra that share corners with six equivalent Mg(6)RbMg11 cuboctahedra; corners with eight Mg(5,5)RbMg10Sb cuboctahedra; edges with two equivalent Rb(1)Mg10Sb2 cuboctahedra; edges with two equivalent Mg(1)Mg12 cuboctahedra; edges with four equivalent Mg(4)Mg12 cuboctahedra; edges with four Mg(5,5)RbMg10Sb cuboctahedra;  a faceface with one Rb(1)Mg10Sb2 cuboctahedra;  a faceface with one Mg(1)Mg12 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with two equivalent Mg(6)RbMg11 cuboctahedra; faces with three equivalent Mg(2)Mg12 cuboctahedra; faces with three equivalent Sb(1)Rb2Mg10 cuboctahedra; and faces with four Mg(5,5)RbMg10Sb cuboctahedra. In the ninth Mg site, Mg(7) is bonded in a distorted single-bond geometry to one Mg(2); two Mg(3,3); two equivalent Mg(4); two equivalent Mg(6); four Mg(5,5); and one Sb(1) atom. In the tenth Mg site, Mg(3) is bonded in a 12-coordinate geometry to two equivalent Rb(1), two equivalent Mg(3), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), and two equivalent Sb(1) atoms. Sb(1) is bonded to two equivalent Rb(1); two equivalent Mg(7); four Mg(3,3,3); and four Mg(5,5) atoms to form SbRb2Mg10 cuboctahedra that share corners with four equivalent Mg(1)Mg12 cuboctahedra; corners with six equivalent Sb(1)Rb2Mg10 cuboctahedra; corners with eight equivalent Mg(4)Mg12 cuboctahedra; edges with two equivalent Rb(1)Mg10Sb2 cuboctahedra; edges with eight Mg(5,5)RbMg10Sb cuboctahedra; faces with two equivalent Rb(1)Mg10Sb2 cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; faces with four Mg(5,5)RbMg10Sb cuboctahedra; and faces with six equivalent Mg(6)RbMg11 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_RbMg14Sb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.607
_cell_length_b   6.623
_cell_length_c   10.617
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.078
_symmetry_Int_Tables_number   1
_cell_volume   402.014
_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  0.334  0.125  1.0
  Mg  Mg1  1  0.167  0.333  0.625  1.0
  Mg  Mg2  1  0.164  0.832  0.625  1.0
  Mg  Mg3  1  0.665  0.325  0.125  1.0
  Mg  Mg4  1  0.668  0.337  0.625  1.0
  Mg  Mg5  1  0.665  0.840  0.125  1.0
  Mg  Mg6  1  0.668  0.831  0.625  1.0
  Mg  Mg7  1  0.339  0.160  0.390  1.0
  Mg  Mg8  1  0.339  0.160  0.860  1.0
  Mg  Mg9  1  0.339  0.679  0.390  1.0
  Mg  Mg10  1  0.339  0.679  0.860  1.0
  Mg  Mg11  1  0.819  0.160  0.392  1.0
  Mg  Mg12  1  0.819  0.160  0.858  1.0
  Mg  Mg13  1  0.830  0.665  0.372  1.0
  Mg  Mg14  1  0.830  0.665  0.878  1.0
  Sb  Sb15  1  0.180  0.840  0.125  1.0
[/CIF]
.
The material described by RbMg14Sb crystallizes in the orthorhombic Amm2 space group. Rb(1) is bonded to two equivalent Mg(6); four Mg(3,3,3); four Mg(5,5); and two equivalent Sb(1) atoms to form RbMg10Sb2 cuboctahedra that share corners with four equivalent Mg(2)Mg12 cuboctahedra; corners with six equivalent Rb(1)Mg10Sb2 cuboctahedra; corners with eight equivalent Mg(4)Mg12 cuboctahedra; edges with two equivalent Sb(1)Rb2Mg10 cuboctahedra; edges with four equivalent Mg(6)RbMg11 cuboctahedra; edges with eight Mg(5,5)RbMg10Sb cuboctahedra; faces with two equivalent Mg(1)Mg12 cuboctahedra; faces with two equivalent Mg(6)RbMg11 cuboctahedra; faces with two equivalent Sb(1)Rb2Mg10 cuboctahedra; and faces with four Mg(5,5)RbMg10Sb 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 Sb(1)Rb2Mg10 cuboctahedra; corners with six equivalent Mg(1)Mg12 cuboctahedra; edges with two equivalent Mg(2)Mg12 cuboctahedra; edges with four equivalent Mg(4)Mg12 cuboctahedra; edges with four equivalent Mg(6)RbMg11 cuboctahedra; edges with eight Mg(5,5)RbMg10Sb cuboctahedra; faces with two equivalent Rb(1)Mg10Sb2 cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; faces with two equivalent Mg(6)RbMg11 cuboctahedra; faces with four equivalent Mg(4)Mg12 cuboctahedra; and faces with four Mg(5,5)RbMg10Sb 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 Rb(1)Mg10Sb2 cuboctahedra; 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 eight Mg(5,5)RbMg10Sb cuboctahedra; faces with two equivalent Mg(1)Mg12 cuboctahedra; faces with two equivalent Sb(1)Rb2Mg10 cuboctahedra; faces with four equivalent Mg(4)Mg12 cuboctahedra; faces with four Mg(5,5)RbMg10Sb cuboctahedra; and faces with six equivalent Mg(6)RbMg11 cuboctahedra. In the third Mg site, Mg(3) is bonded in a 12-coordinate geometry to two equivalent Rb(1), two equivalent Mg(3), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), and two equivalent Sb(1) atoms. 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 Rb(1)Mg10Sb2 cuboctahedra; corners with four equivalent Sb(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 Mg(5,5)RbMg10Sb cuboctahedra; edges with four equivalent Mg(6)RbMg11 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(6)RbMg11 cuboctahedra; and faces with eight Mg(5,5)RbMg10Sb cuboctahedra. In the fifth Mg site, Mg(3) is bonded in a 12-coordinate geometry to two equivalent Rb(1); two equivalent Mg(3); two Mg(5,5); two equivalent Mg(6); two equivalent Mg(7); and two equivalent Sb(1) atoms. 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 Sb(1) atom to form distorted MgRbMg10Sb cuboctahedra that share corners with four equivalent Mg(6)RbMg11 cuboctahedra; corners with ten Mg(5,5)RbMg10Sb cuboctahedra; edges with two equivalent Rb(1)Mg10Sb2 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)RbMg10Sb cuboctahedra; edges with two equivalent Mg(6)RbMg11 cuboctahedra; edges with two equivalent Sb(1)Rb2Mg10 cuboctahedra;  a faceface with one Rb(1)Mg10Sb2 cuboctahedra;  a faceface with one Mg(1)Mg12 cuboctahedra;  a faceface with one Mg(2)Mg12 cuboctahedra;  a faceface with one Sb(1)Rb2Mg10 cuboctahedra; faces with two equivalent Mg(6)RbMg11 cuboctahedra; faces with four equivalent Mg(4)Mg12 cuboctahedra; and faces with four Mg(5,5)RbMg10Sb cuboctahedra. In the seventh 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 Sb(1) atom to form distorted MgRbMg10Sb cuboctahedra that share corners with four equivalent Mg(6)RbMg11 cuboctahedra, corners with ten equivalent Mg(5)RbMg10Sb cuboctahedra, edges with two equivalent Rb(1)Mg10Sb2 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)RbMg10Sb cuboctahedra, edges with two equivalent Mg(6)RbMg11 cuboctahedra, edges with two equivalent Sb(1)Rb2Mg10 cuboctahedra,  a faceface with one Rb(1)Mg10Sb2 cuboctahedra,  a faceface with one Mg(1)Mg12 cuboctahedra,  a faceface with one Mg(2)Mg12 cuboctahedra,  a faceface with one Sb(1)Rb2Mg10 cuboctahedra, faces with two equivalent Mg(6)RbMg11 cuboctahedra, faces with four equivalent Mg(4)Mg12 cuboctahedra, and faces with four equivalent Mg(5)RbMg10Sb cuboctahedra. In the eighth Mg site, Mg(6) is bonded to one Rb(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 MgRbMg11 cuboctahedra that share corners with six equivalent Mg(6)RbMg11 cuboctahedra; corners with eight Mg(5,5)RbMg10Sb cuboctahedra; edges with two equivalent Rb(1)Mg10Sb2 cuboctahedra; edges with two equivalent Mg(1)Mg12 cuboctahedra; edges with four equivalent Mg(4)Mg12 cuboctahedra; edges with four Mg(5,5)RbMg10Sb cuboctahedra;  a faceface with one Rb(1)Mg10Sb2 cuboctahedra;  a faceface with one Mg(1)Mg12 cuboctahedra; faces with two equivalent Mg(4)Mg12 cuboctahedra; faces with two equivalent Mg(6)RbMg11 cuboctahedra; faces with three equivalent Mg(2)Mg12 cuboctahedra; faces with three equivalent Sb(1)Rb2Mg10 cuboctahedra; and faces with four Mg(5,5)RbMg10Sb cuboctahedra. In the ninth Mg site, Mg(7) is bonded in a distorted single-bond geometry to one Mg(2); two Mg(3,3); two equivalent Mg(4); two equivalent Mg(6); four Mg(5,5); and one Sb(1) atom. In the tenth Mg site, Mg(3) is bonded in a 12-coordinate geometry to two equivalent Rb(1), two equivalent Mg(3), two equivalent Mg(5), two equivalent Mg(6), two equivalent Mg(7), and two equivalent Sb(1) atoms. Sb(1) is bonded to two equivalent Rb(1); two equivalent Mg(7); four Mg(3,3,3); and four Mg(5,5) atoms to form SbRb2Mg10 cuboctahedra that share corners with four equivalent Mg(1)Mg12 cuboctahedra; corners with six equivalent Sb(1)Rb2Mg10 cuboctahedra; corners with eight equivalent Mg(4)Mg12 cuboctahedra; edges with two equivalent Rb(1)Mg10Sb2 cuboctahedra; edges with eight Mg(5,5)RbMg10Sb cuboctahedra; faces with two equivalent Rb(1)Mg10Sb2 cuboctahedra; faces with two equivalent Mg(2)Mg12 cuboctahedra; faces with four Mg(5,5)RbMg10Sb cuboctahedra; and faces with six equivalent Mg(6)RbMg11 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_RbMg14Sb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.607
_cell_length_b   6.623
_cell_length_c   10.617
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.078
_symmetry_Int_Tables_number   1
_cell_volume   402.014
_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  0.334  0.125  1.0
  Mg  Mg1  1  0.167  0.333  0.625  1.0
  Mg  Mg2  1  0.164  0.832  0.625  1.0
  Mg  Mg3  1  0.665  0.325  0.125  1.0
  Mg  Mg4  1  0.668  0.337  0.625  1.0
  Mg  Mg5  1  0.665  0.840  0.125  1.0
  Mg  Mg6  1  0.668  0.831  0.625  1.0
  Mg  Mg7  1  0.339  0.160  0.390  1.0
  Mg  Mg8  1  0.339  0.160  0.860  1.0
  Mg  Mg9  1  0.339  0.679  0.390  1.0
  Mg  Mg10  1  0.339  0.679  0.860  1.0
  Mg  Mg11  1  0.819  0.160  0.392  1.0
  Mg  Mg12  1  0.819  0.160  0.858  1.0
  Mg  Mg13  1  0.830  0.665  0.372  1.0
  Mg  Mg14  1  0.830  0.665  0.878  1.0
  Sb  Sb15  1  0.180  0.840  0.125  1.0
[/CIF]
.