The material described by Er2Cr2C3 crystallizes in the monoclinic C2/m space group. Er(1) is bonded in a 5-coordinate geometry to two equivalent C(1) and three equivalent C(2) atoms. Cr(1) is bonded to one C(1) and three equivalent C(2) atoms to form a mixture of corner and edge-sharing CrC4 trigonal pyramids. There are two inequivalent C sites. In the first C site, C(1) is bonded to four equivalent Er(1) and two equivalent Cr(1) atoms to form edge-sharing CEr4Cr2 octahedra. In the second C site, C(2) is bonded in a 6-coordinate geometry to three equivalent Er(1) and three equivalent Cr(1) atoms. is represented by the CIF file [CIF]
data_Er2Cr2C3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.457
_cell_length_b   5.457
_cell_length_c   5.489
_cell_angle_alpha   74.851
_cell_angle_beta   74.851
_cell_angle_gamma   35.328
_symmetry_Int_Tables_number   1
_cell_volume   90.888
_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  0.393  0.393  0.817  1.0
  Er  Er1  1  0.607  0.607  0.183  1.0
  Cr  Cr2  1  0.156  0.156  0.611  1.0
  Cr  Cr3  1  0.844  0.844  0.389  1.0
  C  C4  1  0.000  0.000  0.500  1.0
  C  C5  1  0.717  0.717  0.733  1.0
  C  C6  1  0.283  0.283  0.267  1.0
[/CIF]
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The material described by Er2Cr2C3 crystallizes in the monoclinic C2/m space group. Er(1) is bonded in a 5-coordinate geometry to two equivalent C(1) and three equivalent C(2) atoms. Cr(1) is bonded to one C(1) and three equivalent C(2) atoms to form a mixture of corner and edge-sharing CrC4 trigonal pyramids. There are two inequivalent C sites. In the first C site, C(1) is bonded to four equivalent Er(1) and two equivalent Cr(1) atoms to form edge-sharing CEr4Cr2 octahedra. In the second C site, C(2) is bonded in a 6-coordinate geometry to three equivalent Er(1) and three equivalent Cr(1) atoms. is represented by the CIF file [CIF]
data_Er2Cr2C3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.457
_cell_length_b   5.457
_cell_length_c   5.489
_cell_angle_alpha   74.851
_cell_angle_beta   74.851
_cell_angle_gamma   35.328
_symmetry_Int_Tables_number   1
_cell_volume   90.888
_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  0.393  0.393  0.817  1.0
  Er  Er1  1  0.607  0.607  0.183  1.0
  Cr  Cr2  1  0.156  0.156  0.611  1.0
  Cr  Cr3  1  0.844  0.844  0.389  1.0
  C  C4  1  0.000  0.000  0.500  1.0
  C  C5  1  0.717  0.717  0.733  1.0
  C  C6  1  0.283  0.283  0.267  1.0
[/CIF]
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