The material structure described by Er3(OsAl3)4 crystallizes in the hexagonal P6_3/mmc space group. Er(1) is bonded in a 15-coordinate geometry to four equivalent Os(1), one Al(4), two equivalent Al(1), two equivalent Al(3), and six equivalent Al(2) atoms. There are two inequivalent Os sites. In the first Os site, Os(2) is bonded in a body-centered cubic geometry to two equivalent Al(4) and six equivalent Al(2) atoms. In the second Os site, Os(1) is bonded in a 8-coordinate geometry to four equivalent Er(1), two equivalent Al(1), two equivalent Al(3), and four equivalent Al(2) atoms. There are four inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted trigonal planar geometry to three equivalent Er(1) and three equivalent Os(1) atoms. In the second Al site, Al(2) is bonded in a 3-coordinate geometry to three equivalent Er(1), one Os(2), and two equivalent Os(1) atoms. In the third Al site, Al(3) is bonded in a 2-coordinate geometry to two equivalent Er(1) and two equivalent Os(1) atoms. In the fourth Al site, Al(4) is bonded in a distorted linear geometry to three equivalent Er(1) and two equivalent Os(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er3(Al3Os)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.754
_cell_length_b   8.754
_cell_length_c   9.482
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   629.218
_cell_formula_units_Z   2
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
  Er  Er0  1  0.194  0.387  0.250  1.0
  Er  Er1  1  0.806  0.613  0.750  1.0
  Er  Er2  1  0.613  0.806  0.250  1.0
  Er  Er3  1  0.387  0.194  0.750  1.0
  Er  Er4  1  0.194  0.806  0.250  1.0
  Er  Er5  1  0.806  0.194  0.750  1.0
  Al  Al6  1  0.333  0.667  0.013  1.0
  Al  Al7  1  0.667  0.333  0.987  1.0
  Al  Al8  1  0.667  0.333  0.513  1.0
  Al  Al9  1  0.333  0.667  0.487  1.0
  Al  Al10  1  0.163  0.326  0.575  1.0
  Al  Al11  1  0.837  0.674  0.425  1.0
  Al  Al12  1  0.674  0.837  0.575  1.0
  Al  Al13  1  0.837  0.674  0.075  1.0
  Al  Al14  1  0.326  0.163  0.425  1.0
  Al  Al15  1  0.163  0.326  0.925  1.0
  Al  Al16  1  0.163  0.837  0.575  1.0
  Al  Al17  1  0.326  0.163  0.075  1.0
  Al  Al18  1  0.837  0.163  0.425  1.0
  Al  Al19  1  0.674  0.837  0.925  1.0
  Al  Al20  1  0.837  0.163  0.075  1.0
  Al  Al21  1  0.163  0.837  0.925  1.0
  Al  Al22  1  0.561  0.122  0.250  1.0
  Al  Al23  1  0.439  0.878  0.750  1.0
  Al  Al24  1  0.878  0.439  0.250  1.0
  Al  Al25  1  0.122  0.561  0.750  1.0
  Al  Al26  1  0.561  0.439  0.250  1.0
  Al  Al27  1  0.439  0.561  0.750  1.0
  Al  Al28  1  0.000  0.000  0.250  1.0
  Al  Al29  1  0.000  0.000  0.750  1.0
  Os  Os30  1  0.500  0.000  1.000  1.0
  Os  Os31  1  0.000  0.500  1.000  1.0
  Os  Os32  1  0.500  0.000  0.500  1.0
  Os  Os33  1  0.500  0.500  1.000  1.0
  Os  Os34  1  0.000  0.500  0.500  1.0
  Os  Os35  1  0.500  0.500  0.500  1.0
  Os  Os36  1  0.000  0.000  1.000  1.0
  Os  Os37  1  0.000  0.000  0.500  1.0
[/CIF]
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The material structure described by Er3(OsAl3)4 crystallizes in the hexagonal P6_3/mmc space group. Er(1) is bonded in a 15-coordinate geometry to four equivalent Os(1), one Al(4), two equivalent Al(1), two equivalent Al(3), and six equivalent Al(2) atoms. There are two inequivalent Os sites. In the first Os site, Os(2) is bonded in a body-centered cubic geometry to two equivalent Al(4) and six equivalent Al(2) atoms. In the second Os site, Os(1) is bonded in a 8-coordinate geometry to four equivalent Er(1), two equivalent Al(1), two equivalent Al(3), and four equivalent Al(2) atoms. There are four inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted trigonal planar geometry to three equivalent Er(1) and three equivalent Os(1) atoms. In the second Al site, Al(2) is bonded in a 3-coordinate geometry to three equivalent Er(1), one Os(2), and two equivalent Os(1) atoms. In the third Al site, Al(3) is bonded in a 2-coordinate geometry to two equivalent Er(1) and two equivalent Os(1) atoms. In the fourth Al site, Al(4) is bonded in a distorted linear geometry to three equivalent Er(1) and two equivalent Os(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er3(Al3Os)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.754
_cell_length_b   8.754
_cell_length_c   9.482
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   629.218
_cell_formula_units_Z   2
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
  Er  Er0  1  0.194  0.387  0.250  1.0
  Er  Er1  1  0.806  0.613  0.750  1.0
  Er  Er2  1  0.613  0.806  0.250  1.0
  Er  Er3  1  0.387  0.194  0.750  1.0
  Er  Er4  1  0.194  0.806  0.250  1.0
  Er  Er5  1  0.806  0.194  0.750  1.0
  Al  Al6  1  0.333  0.667  0.013  1.0
  Al  Al7  1  0.667  0.333  0.987  1.0
  Al  Al8  1  0.667  0.333  0.513  1.0
  Al  Al9  1  0.333  0.667  0.487  1.0
  Al  Al10  1  0.163  0.326  0.575  1.0
  Al  Al11  1  0.837  0.674  0.425  1.0
  Al  Al12  1  0.674  0.837  0.575  1.0
  Al  Al13  1  0.837  0.674  0.075  1.0
  Al  Al14  1  0.326  0.163  0.425  1.0
  Al  Al15  1  0.163  0.326  0.925  1.0
  Al  Al16  1  0.163  0.837  0.575  1.0
  Al  Al17  1  0.326  0.163  0.075  1.0
  Al  Al18  1  0.837  0.163  0.425  1.0
  Al  Al19  1  0.674  0.837  0.925  1.0
  Al  Al20  1  0.837  0.163  0.075  1.0
  Al  Al21  1  0.163  0.837  0.925  1.0
  Al  Al22  1  0.561  0.122  0.250  1.0
  Al  Al23  1  0.439  0.878  0.750  1.0
  Al  Al24  1  0.878  0.439  0.250  1.0
  Al  Al25  1  0.122  0.561  0.750  1.0
  Al  Al26  1  0.561  0.439  0.250  1.0
  Al  Al27  1  0.439  0.561  0.750  1.0
  Al  Al28  1  0.000  0.000  0.250  1.0
  Al  Al29  1  0.000  0.000  0.750  1.0
  Os  Os30  1  0.500  0.000  1.000  1.0
  Os  Os31  1  0.000  0.500  1.000  1.0
  Os  Os32  1  0.500  0.000  0.500  1.0
  Os  Os33  1  0.500  0.500  1.000  1.0
  Os  Os34  1  0.000  0.500  0.500  1.0
  Os  Os35  1  0.500  0.500  0.500  1.0
  Os  Os36  1  0.000  0.000  1.000  1.0
  Os  Os37  1  0.000  0.000  0.500  1.0
[/CIF]
.