The structure described by Er3Co2Si3 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 9-coordinate geometry to four equivalent Co(1), two equivalent Si(2), and three equivalent Si(1) atoms. In the second Er site, Er(2) is bonded in a 10-coordinate geometry to four equivalent Co(1), two equivalent Si(1), and five equivalent Si(2) atoms. Co(1) is bonded in a 10-coordinate geometry to two equivalent Er(1), four equivalent Er(2), one Si(1), and three equivalent Si(2) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to three equivalent Er(1), four equivalent Er(2), and two equivalent Co(1) atoms. In the second Si site, Si(2) is bonded in a 10-coordinate geometry to one Er(1), five equivalent Er(2), three equivalent Co(1), and one Si(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er3Co2Si3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.545
_cell_length_b   5.545
_cell_length_c   13.420
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   137.135
_symmetry_Int_Tables_number   1
_cell_volume   280.658
_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  0.639  0.361  0.250  1.0
  Er  Er1  1  0.361  0.639  0.750  1.0
  Er  Er2  1  0.920  0.080  0.113  1.0
  Er  Er3  1  0.080  0.920  0.887  1.0
  Er  Er4  1  0.080  0.920  0.613  1.0
  Er  Er5  1  0.920  0.080  0.387  1.0
  Co  Co6  1  0.786  0.214  0.582  1.0
  Co  Co7  1  0.214  0.786  0.418  1.0
  Co  Co8  1  0.214  0.786  0.082  1.0
  Co  Co9  1  0.786  0.214  0.918  1.0
  Si  Si10  1  0.331  0.669  0.250  1.0
  Si  Si11  1  0.669  0.331  0.750  1.0
  Si  Si12  1  0.619  0.381  0.039  1.0
  Si  Si13  1  0.381  0.619  0.961  1.0
  Si  Si14  1  0.381  0.619  0.539  1.0
  Si  Si15  1  0.619  0.381  0.461  1.0
[/CIF]
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The structure described by Er3Co2Si3 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 9-coordinate geometry to four equivalent Co(1), two equivalent Si(2), and three equivalent Si(1) atoms. In the second Er site, Er(2) is bonded in a 10-coordinate geometry to four equivalent Co(1), two equivalent Si(1), and five equivalent Si(2) atoms. Co(1) is bonded in a 10-coordinate geometry to two equivalent Er(1), four equivalent Er(2), one Si(1), and three equivalent Si(2) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to three equivalent Er(1), four equivalent Er(2), and two equivalent Co(1) atoms. In the second Si site, Si(2) is bonded in a 10-coordinate geometry to one Er(1), five equivalent Er(2), three equivalent Co(1), and one Si(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er3Co2Si3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.545
_cell_length_b   5.545
_cell_length_c   13.420
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   137.135
_symmetry_Int_Tables_number   1
_cell_volume   280.658
_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  0.639  0.361  0.250  1.0
  Er  Er1  1  0.361  0.639  0.750  1.0
  Er  Er2  1  0.920  0.080  0.113  1.0
  Er  Er3  1  0.080  0.920  0.887  1.0
  Er  Er4  1  0.080  0.920  0.613  1.0
  Er  Er5  1  0.920  0.080  0.387  1.0
  Co  Co6  1  0.786  0.214  0.582  1.0
  Co  Co7  1  0.214  0.786  0.418  1.0
  Co  Co8  1  0.214  0.786  0.082  1.0
  Co  Co9  1  0.786  0.214  0.918  1.0
  Si  Si10  1  0.331  0.669  0.250  1.0
  Si  Si11  1  0.669  0.331  0.750  1.0
  Si  Si12  1  0.619  0.381  0.039  1.0
  Si  Si13  1  0.381  0.619  0.961  1.0
  Si  Si14  1  0.381  0.619  0.539  1.0
  Si  Si15  1  0.619  0.381  0.461  1.0
[/CIF]
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