The material structure described by Eu2Mn5Al12 crystallizes in the trigonal R-3m space group. Eu(1) is bonded in a 13-coordinate geometry to one Mn(2), six equivalent Al(1), and nine equivalent Al(2) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 8-coordinate geometry to two equivalent Mn(2), four equivalent Al(1), and four equivalent Al(2) atoms. In the second Mn site, Mn(2) is bonded in a 14-coordinate geometry to one Eu(1), one Mn(2), three equivalent Mn(1), three equivalent Al(2), and six equivalent Al(1) atoms. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to two equivalent Eu(1), two equivalent Mn(1), two equivalent Mn(2), two equivalent Al(1), and four equivalent Al(2) atoms to form a mixture of distorted edge, corner, and face-sharing AlEu2Mn4Al6 cuboctahedra. In the second Al site, Al(2) is bonded in a 12-coordinate geometry to three equivalent Eu(1), one Mn(2), two equivalent Mn(1), two equivalent Al(2), and four equivalent Al(1) atoms. is represented by the CIF file [CIF]
data_Eu2Mn5Al12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.833
_cell_length_b   6.833
_cell_length_c   6.833
_cell_angle_alpha   83.492
_cell_angle_beta   83.492
_cell_angle_gamma   83.492
_symmetry_Int_Tables_number   1
_cell_volume   313.312
_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
  Eu  Eu0  1  0.657  0.657  0.657  1.0
  Eu  Eu1  1  0.343  0.343  0.343  1.0
  Mn  Mn2  1  0.000  0.000  0.500  1.0
  Mn  Mn3  1  0.000  0.500  0.000  1.0
  Mn  Mn4  1  0.500  0.000  0.000  1.0
  Mn  Mn5  1  0.902  0.902  0.902  1.0
  Mn  Mn6  1  0.098  0.098  0.098  1.0
  Al  Al7  1  0.282  0.718  0.000  1.0
  Al  Al8  1  0.718  0.000  0.282  1.0
  Al  Al9  1  0.000  0.282  0.718  1.0
  Al  Al10  1  0.282  0.000  0.718  1.0
  Al  Al11  1  0.000  0.718  0.282  1.0
  Al  Al12  1  0.718  0.282  0.000  1.0
  Al  Al13  1  0.336  0.336  0.879  1.0
  Al  Al14  1  0.336  0.879  0.336  1.0
  Al  Al15  1  0.879  0.336  0.336  1.0
  Al  Al16  1  0.664  0.664  0.121  1.0
  Al  Al17  1  0.664  0.121  0.664  1.0
  Al  Al18  1  0.121  0.664  0.664  1.0
[/CIF]
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The material structure described by Eu2Mn5Al12 crystallizes in the trigonal R-3m space group. Eu(1) is bonded in a 13-coordinate geometry to one Mn(2), six equivalent Al(1), and nine equivalent Al(2) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 8-coordinate geometry to two equivalent Mn(2), four equivalent Al(1), and four equivalent Al(2) atoms. In the second Mn site, Mn(2) is bonded in a 14-coordinate geometry to one Eu(1), one Mn(2), three equivalent Mn(1), three equivalent Al(2), and six equivalent Al(1) atoms. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to two equivalent Eu(1), two equivalent Mn(1), two equivalent Mn(2), two equivalent Al(1), and four equivalent Al(2) atoms to form a mixture of distorted edge, corner, and face-sharing AlEu2Mn4Al6 cuboctahedra. In the second Al site, Al(2) is bonded in a 12-coordinate geometry to three equivalent Eu(1), one Mn(2), two equivalent Mn(1), two equivalent Al(2), and four equivalent Al(1) atoms. is represented by the CIF file [CIF]
data_Eu2Mn5Al12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.833
_cell_length_b   6.833
_cell_length_c   6.833
_cell_angle_alpha   83.492
_cell_angle_beta   83.492
_cell_angle_gamma   83.492
_symmetry_Int_Tables_number   1
_cell_volume   313.312
_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
  Eu  Eu0  1  0.657  0.657  0.657  1.0
  Eu  Eu1  1  0.343  0.343  0.343  1.0
  Mn  Mn2  1  0.000  0.000  0.500  1.0
  Mn  Mn3  1  0.000  0.500  0.000  1.0
  Mn  Mn4  1  0.500  0.000  0.000  1.0
  Mn  Mn5  1  0.902  0.902  0.902  1.0
  Mn  Mn6  1  0.098  0.098  0.098  1.0
  Al  Al7  1  0.282  0.718  0.000  1.0
  Al  Al8  1  0.718  0.000  0.282  1.0
  Al  Al9  1  0.000  0.282  0.718  1.0
  Al  Al10  1  0.282  0.000  0.718  1.0
  Al  Al11  1  0.000  0.718  0.282  1.0
  Al  Al12  1  0.718  0.282  0.000  1.0
  Al  Al13  1  0.336  0.336  0.879  1.0
  Al  Al14  1  0.336  0.879  0.336  1.0
  Al  Al15  1  0.879  0.336  0.336  1.0
  Al  Al16  1  0.664  0.664  0.121  1.0
  Al  Al17  1  0.664  0.121  0.664  1.0
  Al  Al18  1  0.121  0.664  0.664  1.0
[/CIF]
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