The compound described by Er7Co6Sn23 crystallizes in the trigonal P-3m1 space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a distorted hexagonal planar geometry to six equivalent Sn(5) atoms. In the second Er site, Er(2) is bonded in a 12-coordinate geometry to two equivalent Co(1), one Sn(1), one Sn(6), two equivalent Sn(3), two equivalent Sn(5), and four equivalent Sn(2) atoms. Co(1) is bonded in a 6-coordinate geometry to two equivalent Er(2), one Sn(3), one Sn(6), and two equivalent Sn(5) atoms. There are six inequivalent Sn sites. In the first Sn site, Sn(6) is bonded in a 3-coordinate geometry to three equivalent Er(2), three equivalent Co(1), and one Sn(1) atom. In the second Sn site, Sn(1) is bonded in a 7-coordinate geometry to three equivalent Er(2), one Sn(6), and three equivalent Sn(2) atoms. In the third Sn site, Sn(2) is bonded in a 8-coordinate geometry to four equivalent Er(2), one Sn(1), one Sn(3), and two equivalent Sn(2) atoms. In the fourth Sn site, Sn(3) is bonded in a distorted single-bond geometry to two equivalent Er(2), one Co(1), one Sn(2), and one Sn(4) atom. In the fifth Sn site, Sn(4) is bonded in a distorted octahedral geometry to six equivalent Sn(3) atoms. In the sixth Sn site, Sn(5) is bonded in a 2-coordinate geometry to one Er(1), two equivalent Er(2), and two equivalent Co(1) atoms. is represented by the CIF file [CIF]
data_Er7Co6Sn23
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.069
_cell_length_b   10.069
_cell_length_c   10.966
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   962.933
_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
  Er  Er0  1  0.000  0.000  0.500  1.0
  Er  Er1  1  0.951  0.476  0.211  1.0
  Er  Er2  1  0.524  0.049  0.211  1.0
  Er  Er3  1  0.524  0.476  0.211  1.0
  Er  Er4  1  0.049  0.524  0.789  1.0
  Er  Er5  1  0.476  0.951  0.789  1.0
  Er  Er6  1  0.476  0.524  0.789  1.0
  Co  Co7  1  0.387  0.194  0.350  1.0
  Co  Co8  1  0.806  0.613  0.350  1.0
  Co  Co9  1  0.806  0.194  0.350  1.0
  Co  Co10  1  0.613  0.806  0.650  1.0
  Co  Co11  1  0.194  0.387  0.650  1.0
  Co  Co12  1  0.194  0.806  0.650  1.0
  Sn  Sn13  1  0.667  0.333  0.701  1.0
  Sn  Sn14  1  0.333  0.667  0.299  1.0
  Sn  Sn15  1  0.456  0.228  0.943  1.0
  Sn  Sn16  1  0.772  0.544  0.943  1.0
  Sn  Sn17  1  0.772  0.228  0.943  1.0
  Sn  Sn18  1  0.544  0.772  0.057  1.0
  Sn  Sn19  1  0.228  0.456  0.057  1.0
  Sn  Sn20  1  0.228  0.772  0.057  1.0
  Sn  Sn21  1  0.233  0.117  0.177  1.0
  Sn  Sn22  1  0.883  0.767  0.177  1.0
  Sn  Sn23  1  0.883  0.117  0.177  1.0
  Sn  Sn24  1  0.767  0.883  0.823  1.0
  Sn  Sn25  1  0.117  0.233  0.823  1.0
  Sn  Sn26  1  0.117  0.883  0.823  1.0
  Sn  Sn27  1  0.000  0.000  0.000  1.0
  Sn  Sn28  1  0.348  0.000  0.500  1.0
  Sn  Sn29  1  0.652  0.652  0.500  1.0
  Sn  Sn30  1  0.000  0.348  0.500  1.0
  Sn  Sn31  1  0.348  0.348  0.500  1.0
  Sn  Sn32  1  0.000  0.652  0.500  1.0
  Sn  Sn33  1  0.652  0.000  0.500  1.0
  Sn  Sn34  1  0.667  0.333  0.391  1.0
  Sn  Sn35  1  0.333  0.667  0.609  1.0
[/CIF]
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The compound described by Er7Co6Sn23 crystallizes in the trigonal P-3m1 space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a distorted hexagonal planar geometry to six equivalent Sn(5) atoms. In the second Er site, Er(2) is bonded in a 12-coordinate geometry to two equivalent Co(1), one Sn(1), one Sn(6), two equivalent Sn(3), two equivalent Sn(5), and four equivalent Sn(2) atoms. Co(1) is bonded in a 6-coordinate geometry to two equivalent Er(2), one Sn(3), one Sn(6), and two equivalent Sn(5) atoms. There are six inequivalent Sn sites. In the first Sn site, Sn(6) is bonded in a 3-coordinate geometry to three equivalent Er(2), three equivalent Co(1), and one Sn(1) atom. In the second Sn site, Sn(1) is bonded in a 7-coordinate geometry to three equivalent Er(2), one Sn(6), and three equivalent Sn(2) atoms. In the third Sn site, Sn(2) is bonded in a 8-coordinate geometry to four equivalent Er(2), one Sn(1), one Sn(3), and two equivalent Sn(2) atoms. In the fourth Sn site, Sn(3) is bonded in a distorted single-bond geometry to two equivalent Er(2), one Co(1), one Sn(2), and one Sn(4) atom. In the fifth Sn site, Sn(4) is bonded in a distorted octahedral geometry to six equivalent Sn(3) atoms. In the sixth Sn site, Sn(5) is bonded in a 2-coordinate geometry to one Er(1), two equivalent Er(2), and two equivalent Co(1) atoms. is represented by the CIF file [CIF]
data_Er7Co6Sn23
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.069
_cell_length_b   10.069
_cell_length_c   10.966
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   962.933
_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
  Er  Er0  1  0.000  0.000  0.500  1.0
  Er  Er1  1  0.951  0.476  0.211  1.0
  Er  Er2  1  0.524  0.049  0.211  1.0
  Er  Er3  1  0.524  0.476  0.211  1.0
  Er  Er4  1  0.049  0.524  0.789  1.0
  Er  Er5  1  0.476  0.951  0.789  1.0
  Er  Er6  1  0.476  0.524  0.789  1.0
  Co  Co7  1  0.387  0.194  0.350  1.0
  Co  Co8  1  0.806  0.613  0.350  1.0
  Co  Co9  1  0.806  0.194  0.350  1.0
  Co  Co10  1  0.613  0.806  0.650  1.0
  Co  Co11  1  0.194  0.387  0.650  1.0
  Co  Co12  1  0.194  0.806  0.650  1.0
  Sn  Sn13  1  0.667  0.333  0.701  1.0
  Sn  Sn14  1  0.333  0.667  0.299  1.0
  Sn  Sn15  1  0.456  0.228  0.943  1.0
  Sn  Sn16  1  0.772  0.544  0.943  1.0
  Sn  Sn17  1  0.772  0.228  0.943  1.0
  Sn  Sn18  1  0.544  0.772  0.057  1.0
  Sn  Sn19  1  0.228  0.456  0.057  1.0
  Sn  Sn20  1  0.228  0.772  0.057  1.0
  Sn  Sn21  1  0.233  0.117  0.177  1.0
  Sn  Sn22  1  0.883  0.767  0.177  1.0
  Sn  Sn23  1  0.883  0.117  0.177  1.0
  Sn  Sn24  1  0.767  0.883  0.823  1.0
  Sn  Sn25  1  0.117  0.233  0.823  1.0
  Sn  Sn26  1  0.117  0.883  0.823  1.0
  Sn  Sn27  1  0.000  0.000  0.000  1.0
  Sn  Sn28  1  0.348  0.000  0.500  1.0
  Sn  Sn29  1  0.652  0.652  0.500  1.0
  Sn  Sn30  1  0.000  0.348  0.500  1.0
  Sn  Sn31  1  0.348  0.348  0.500  1.0
  Sn  Sn32  1  0.000  0.652  0.500  1.0
  Sn  Sn33  1  0.652  0.000  0.500  1.0
  Sn  Sn34  1  0.667  0.333  0.391  1.0
  Sn  Sn35  1  0.333  0.667  0.609  1.0
[/CIF]
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