The material described by Er4CoSn8 crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Er sites. In the first Er site, Er(1) is bonded in a 10-coordinate geometry to two equivalent Sn(1), two equivalent Sn(3), two equivalent Sn(6), and four equivalent Sn(7) atoms. In the second Er site, Er(2) is bonded in a 10-coordinate geometry to two equivalent Sn(2), two equivalent Sn(4), two equivalent Sn(5), and four equivalent Sn(8) atoms. In the third Er site, Er(3) is bonded in a 14-coordinate geometry to four equivalent Co(1), two equivalent Sn(1), two equivalent Sn(3), two equivalent Sn(8), and four equivalent Sn(5) atoms. In the fourth Er site, Er(4) is bonded in a 10-coordinate geometry to two equivalent Sn(2), two equivalent Sn(4), two equivalent Sn(7), and four equivalent Sn(6) atoms. Co(1) is bonded in a 5-coordinate geometry to four equivalent Er(3), one Sn(5), two equivalent Sn(1), and two equivalent Sn(3) atoms. There are eight inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 10-coordinate geometry to two equivalent Er(1), two equivalent Er(3), two equivalent Co(1), and four equivalent Sn(3) atoms. In the second Sn site, Sn(2) is bonded in a 8-coordinate geometry to two equivalent Er(2), two equivalent Er(4), and four equivalent Sn(4) atoms. In the third Sn site, Sn(3) is bonded in a 10-coordinate geometry to two equivalent Er(1), two equivalent Er(3), two equivalent Co(1), and four equivalent Sn(1) atoms. In the fourth Sn site, Sn(4) is bonded in a 8-coordinate geometry to two equivalent Er(2), two equivalent Er(4), and four equivalent Sn(2) atoms. In the fifth Sn site, Sn(5) is bonded in a 9-coordinate geometry to two equivalent Er(2), four equivalent Er(3), one Co(1), and two equivalent Sn(8) atoms. In the sixth Sn site, Sn(6) is bonded in a 8-coordinate geometry to two equivalent Er(1), four equivalent Er(4), and two equivalent Sn(7) atoms. In the seventh Sn site, Sn(7) is bonded in a 8-coordinate geometry to two equivalent Er(4), four equivalent Er(1), and two equivalent Sn(6) atoms. In the eighth Sn site, Sn(8) is bonded in a 8-coordinate geometry to two equivalent Er(3), four equivalent Er(2), and two equivalent Sn(5) atoms. is represented by the CIF file [CIF]
data_Er4CoSn8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.410
_cell_length_b   4.431
_cell_length_c   16.477
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   321.985
_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  0.250  0.000  0.095  1.0
  Er  Er1  1  0.250  0.500  0.602  1.0
  Er  Er2  1  0.750  0.500  0.396  1.0
  Er  Er3  1  0.750  0.000  0.899  1.0
  Co  Co4  1  0.250  0.000  0.304  1.0
  Sn  Sn5  1  0.250  0.500  0.235  1.0
  Sn  Sn6  1  0.250  0.000  0.748  1.0
  Sn  Sn7  1  0.750  0.000  0.235  1.0
  Sn  Sn8  1  0.750  0.500  0.752  1.0
  Sn  Sn9  1  0.250  0.000  0.452  1.0
  Sn  Sn10  1  0.250  0.500  0.934  1.0
  Sn  Sn11  1  0.750  0.500  0.063  1.0
  Sn  Sn12  1  0.750  0.000  0.572  1.0
[/CIF]
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The material described by Er4CoSn8 crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Er sites. In the first Er site, Er(1) is bonded in a 10-coordinate geometry to two equivalent Sn(1), two equivalent Sn(3), two equivalent Sn(6), and four equivalent Sn(7) atoms. In the second Er site, Er(2) is bonded in a 10-coordinate geometry to two equivalent Sn(2), two equivalent Sn(4), two equivalent Sn(5), and four equivalent Sn(8) atoms. In the third Er site, Er(3) is bonded in a 14-coordinate geometry to four equivalent Co(1), two equivalent Sn(1), two equivalent Sn(3), two equivalent Sn(8), and four equivalent Sn(5) atoms. In the fourth Er site, Er(4) is bonded in a 10-coordinate geometry to two equivalent Sn(2), two equivalent Sn(4), two equivalent Sn(7), and four equivalent Sn(6) atoms. Co(1) is bonded in a 5-coordinate geometry to four equivalent Er(3), one Sn(5), two equivalent Sn(1), and two equivalent Sn(3) atoms. There are eight inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 10-coordinate geometry to two equivalent Er(1), two equivalent Er(3), two equivalent Co(1), and four equivalent Sn(3) atoms. In the second Sn site, Sn(2) is bonded in a 8-coordinate geometry to two equivalent Er(2), two equivalent Er(4), and four equivalent Sn(4) atoms. In the third Sn site, Sn(3) is bonded in a 10-coordinate geometry to two equivalent Er(1), two equivalent Er(3), two equivalent Co(1), and four equivalent Sn(1) atoms. In the fourth Sn site, Sn(4) is bonded in a 8-coordinate geometry to two equivalent Er(2), two equivalent Er(4), and four equivalent Sn(2) atoms. In the fifth Sn site, Sn(5) is bonded in a 9-coordinate geometry to two equivalent Er(2), four equivalent Er(3), one Co(1), and two equivalent Sn(8) atoms. In the sixth Sn site, Sn(6) is bonded in a 8-coordinate geometry to two equivalent Er(1), four equivalent Er(4), and two equivalent Sn(7) atoms. In the seventh Sn site, Sn(7) is bonded in a 8-coordinate geometry to two equivalent Er(4), four equivalent Er(1), and two equivalent Sn(6) atoms. In the eighth Sn site, Sn(8) is bonded in a 8-coordinate geometry to two equivalent Er(3), four equivalent Er(2), and two equivalent Sn(5) atoms. is represented by the CIF file [CIF]
data_Er4CoSn8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.410
_cell_length_b   4.431
_cell_length_c   16.477
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   321.985
_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  0.250  0.000  0.095  1.0
  Er  Er1  1  0.250  0.500  0.602  1.0
  Er  Er2  1  0.750  0.500  0.396  1.0
  Er  Er3  1  0.750  0.000  0.899  1.0
  Co  Co4  1  0.250  0.000  0.304  1.0
  Sn  Sn5  1  0.250  0.500  0.235  1.0
  Sn  Sn6  1  0.250  0.000  0.748  1.0
  Sn  Sn7  1  0.750  0.000  0.235  1.0
  Sn  Sn8  1  0.750  0.500  0.752  1.0
  Sn  Sn9  1  0.250  0.000  0.452  1.0
  Sn  Sn10  1  0.250  0.500  0.934  1.0
  Sn  Sn11  1  0.750  0.500  0.063  1.0
  Sn  Sn12  1  0.750  0.000  0.572  1.0
[/CIF]
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