The material described by MgY4Rh crystallizes in the cubic F-43m space group. Mg(1) is bonded to three equivalent Mg(1), three equivalent Y(1), three equivalent Y(2), and three equivalent Y(3) atoms to form a mixture of corner and face-sharing MgY9Mg3 cuboctahedra. There are three inequivalent Y sites. In the first Y site, Y(1) is bonded in a 3-coordinate geometry to three equivalent Mg(1), three equivalent Y(3), and three equivalent Rh(1) atoms. In the second Y site, Y(2) is bonded in a bent 150 degrees geometry to two equivalent Mg(1), four equivalent Y(3), and two equivalent Rh(1) atoms. In the third Y site, Y(3) is bonded in a 14-coordinate geometry to two equivalent Mg(1), two equivalent Y(1), four equivalent Y(2), four equivalent Y(3), and two equivalent Rh(1) atoms. Rh(1) is bonded in a 6-coordinate geometry to three equivalent Y(1), three equivalent Y(2), and three equivalent Y(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Y4MgRh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.752
_cell_length_b   9.751
_cell_length_c   9.751
_cell_angle_alpha   60.000
_cell_angle_beta   60.001
_cell_angle_gamma   60.001
_symmetry_Int_Tables_number   1
_cell_volume   655.690
_cell_formula_units_Z   4
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
  Y  Y0  1  0.596  0.596  0.596  1.0
  Y  Y1  1  0.596  0.596  0.213  1.0
  Y  Y2  1  0.596  0.213  0.596  1.0
  Y  Y3  1  0.213  0.596  0.596  1.0
  Y  Y4  1  0.062  0.438  0.438  1.0
  Y  Y5  1  0.438  0.062  0.062  1.0
  Y  Y6  1  0.438  0.062  0.438  1.0
  Y  Y7  1  0.062  0.438  0.062  1.0
  Y  Y8  1  0.438  0.438  0.062  1.0
  Y  Y9  1  0.062  0.062  0.438  1.0
  Y  Y10  1  0.186  0.814  0.814  1.0
  Y  Y11  1  0.814  0.186  0.186  1.0
  Y  Y12  1  0.814  0.186  0.814  1.0
  Y  Y13  1  0.186  0.814  0.186  1.0
  Y  Y14  1  0.814  0.814  0.186  1.0
  Y  Y15  1  0.186  0.186  0.814  1.0
  Mg  Mg16  1  0.829  0.829  0.829  1.0
  Mg  Mg17  1  0.829  0.829  0.513  1.0
  Mg  Mg18  1  0.829  0.513  0.829  1.0
  Mg  Mg19  1  0.513  0.829  0.829  1.0
  Rh  Rh20  1  0.391  0.391  0.391  1.0
  Rh  Rh21  1  0.391  0.391  0.826  1.0
  Rh  Rh22  1  0.391  0.826  0.391  1.0
  Rh  Rh23  1  0.826  0.391  0.391  1.0
[/CIF]
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The material described by MgY4Rh crystallizes in the cubic F-43m space group. Mg(1) is bonded to three equivalent Mg(1), three equivalent Y(1), three equivalent Y(2), and three equivalent Y(3) atoms to form a mixture of corner and face-sharing MgY9Mg3 cuboctahedra. There are three inequivalent Y sites. In the first Y site, Y(1) is bonded in a 3-coordinate geometry to three equivalent Mg(1), three equivalent Y(3), and three equivalent Rh(1) atoms. In the second Y site, Y(2) is bonded in a bent 150 degrees geometry to two equivalent Mg(1), four equivalent Y(3), and two equivalent Rh(1) atoms. In the third Y site, Y(3) is bonded in a 14-coordinate geometry to two equivalent Mg(1), two equivalent Y(1), four equivalent Y(2), four equivalent Y(3), and two equivalent Rh(1) atoms. Rh(1) is bonded in a 6-coordinate geometry to three equivalent Y(1), three equivalent Y(2), and three equivalent Y(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Y4MgRh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.752
_cell_length_b   9.751
_cell_length_c   9.751
_cell_angle_alpha   60.000
_cell_angle_beta   60.001
_cell_angle_gamma   60.001
_symmetry_Int_Tables_number   1
_cell_volume   655.690
_cell_formula_units_Z   4
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
  Y  Y0  1  0.596  0.596  0.596  1.0
  Y  Y1  1  0.596  0.596  0.213  1.0
  Y  Y2  1  0.596  0.213  0.596  1.0
  Y  Y3  1  0.213  0.596  0.596  1.0
  Y  Y4  1  0.062  0.438  0.438  1.0
  Y  Y5  1  0.438  0.062  0.062  1.0
  Y  Y6  1  0.438  0.062  0.438  1.0
  Y  Y7  1  0.062  0.438  0.062  1.0
  Y  Y8  1  0.438  0.438  0.062  1.0
  Y  Y9  1  0.062  0.062  0.438  1.0
  Y  Y10  1  0.186  0.814  0.814  1.0
  Y  Y11  1  0.814  0.186  0.186  1.0
  Y  Y12  1  0.814  0.186  0.814  1.0
  Y  Y13  1  0.186  0.814  0.186  1.0
  Y  Y14  1  0.814  0.814  0.186  1.0
  Y  Y15  1  0.186  0.186  0.814  1.0
  Mg  Mg16  1  0.829  0.829  0.829  1.0
  Mg  Mg17  1  0.829  0.829  0.513  1.0
  Mg  Mg18  1  0.829  0.513  0.829  1.0
  Mg  Mg19  1  0.513  0.829  0.829  1.0
  Rh  Rh20  1  0.391  0.391  0.391  1.0
  Rh  Rh21  1  0.391  0.391  0.826  1.0
  Rh  Rh22  1  0.391  0.826  0.391  1.0
  Rh  Rh23  1  0.826  0.391  0.391  1.0
[/CIF]
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