The compound described by Er2CoGa3 crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 12-coordinate geometry to twelve equivalent Ga(1) atoms. In the second Er site, Er(2) is bonded in a 12-coordinate geometry to four equivalent Co(1) and eight equivalent Ga(1) atoms. Co(1) is bonded in a 6-coordinate geometry to six equivalent Er(2) and three equivalent Ga(1) atoms. Ga(1) is bonded in a 10-coordinate geometry to two equivalent Er(1), four equivalent Er(2), one Co(1), and three equivalent Ga(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er2Ga3Co
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.878
_cell_length_b   8.672
_cell_length_c   8.673
_cell_angle_alpha   119.999
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   448.005
_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
  Er  Er0  1  0.750  0.000  1.000  1.0
  Er  Er1  1  0.250  0.000  1.000  1.0
  Er  Er2  1  0.750  0.479  0.521  1.0
  Er  Er3  1  0.250  0.521  0.479  1.0
  Er  Er4  1  0.750  0.042  0.521  1.0
  Er  Er5  1  0.250  0.958  0.479  1.0
  Er  Er6  1  0.750  0.479  0.958  1.0
  Er  Er7  1  0.250  0.521  0.042  1.0
  Ga  Ga8  1  0.955  0.828  0.172  1.0
  Ga  Ga9  1  0.045  0.172  0.828  1.0
  Ga  Ga10  1  0.955  0.344  0.172  1.0
  Ga  Ga11  1  0.455  0.172  0.828  1.0
  Ga  Ga12  1  0.045  0.656  0.828  1.0
  Ga  Ga13  1  0.545  0.828  0.172  1.0
  Ga  Ga14  1  0.955  0.828  0.656  1.0
  Ga  Ga15  1  0.455  0.656  0.828  1.0
  Ga  Ga16  1  0.045  0.172  0.344  1.0
  Ga  Ga17  1  0.545  0.344  0.172  1.0
  Ga  Ga18  1  0.455  0.172  0.344  1.0
  Ga  Ga19  1  0.545  0.828  0.656  1.0
  Co  Co20  1  0.997  0.667  0.333  1.0
  Co  Co21  1  0.003  0.333  0.667  1.0
  Co  Co22  1  0.497  0.333  0.667  1.0
  Co  Co23  1  0.503  0.667  0.333  1.0
[/CIF]
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The compound described by Er2CoGa3 crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 12-coordinate geometry to twelve equivalent Ga(1) atoms. In the second Er site, Er(2) is bonded in a 12-coordinate geometry to four equivalent Co(1) and eight equivalent Ga(1) atoms. Co(1) is bonded in a 6-coordinate geometry to six equivalent Er(2) and three equivalent Ga(1) atoms. Ga(1) is bonded in a 10-coordinate geometry to two equivalent Er(1), four equivalent Er(2), one Co(1), and three equivalent Ga(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er2Ga3Co
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.878
_cell_length_b   8.672
_cell_length_c   8.673
_cell_angle_alpha   119.999
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   448.005
_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
  Er  Er0  1  0.750  0.000  1.000  1.0
  Er  Er1  1  0.250  0.000  1.000  1.0
  Er  Er2  1  0.750  0.479  0.521  1.0
  Er  Er3  1  0.250  0.521  0.479  1.0
  Er  Er4  1  0.750  0.042  0.521  1.0
  Er  Er5  1  0.250  0.958  0.479  1.0
  Er  Er6  1  0.750  0.479  0.958  1.0
  Er  Er7  1  0.250  0.521  0.042  1.0
  Ga  Ga8  1  0.955  0.828  0.172  1.0
  Ga  Ga9  1  0.045  0.172  0.828  1.0
  Ga  Ga10  1  0.955  0.344  0.172  1.0
  Ga  Ga11  1  0.455  0.172  0.828  1.0
  Ga  Ga12  1  0.045  0.656  0.828  1.0
  Ga  Ga13  1  0.545  0.828  0.172  1.0
  Ga  Ga14  1  0.955  0.828  0.656  1.0
  Ga  Ga15  1  0.455  0.656  0.828  1.0
  Ga  Ga16  1  0.045  0.172  0.344  1.0
  Ga  Ga17  1  0.545  0.344  0.172  1.0
  Ga  Ga18  1  0.455  0.172  0.344  1.0
  Ga  Ga19  1  0.545  0.828  0.656  1.0
  Co  Co20  1  0.997  0.667  0.333  1.0
  Co  Co21  1  0.003  0.333  0.667  1.0
  Co  Co22  1  0.497  0.333  0.667  1.0
  Co  Co23  1  0.503  0.667  0.333  1.0
[/CIF]
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