The structure described by Sm2Cr2C3 crystallizes in the monoclinic C2/m space group. Sm(1) is bonded in a 3-coordinate geometry to two equivalent C(2) and four equivalent C(1) atoms. Cr(1) is bonded to one C(2) and three equivalent C(1) 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 in a 7-coordinate geometry to four equivalent Sm(1) and three equivalent Cr(1) atoms. In the second C site, C(2) is bonded to four equivalent Sm(1) and two equivalent Cr(1) atoms to form edge-sharing CSm4Cr2 octahedra. is represented by the CIF file [CIF]
data_Sm2Cr2C3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.448
_cell_length_b   5.448
_cell_length_c   5.684
_cell_angle_alpha   75.727
_cell_angle_beta   75.727
_cell_angle_gamma   37.164
_symmetry_Int_Tables_number   1
_cell_volume   98.428
_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
  Sm  Sm0  1  0.399  0.399  0.818  1.0
  Sm  Sm1  1  0.601  0.601  0.182  1.0
  Cr  Cr2  1  0.159  0.159  0.602  1.0
  Cr  Cr3  1  0.841  0.841  0.398  1.0
  C  C4  1  0.295  0.295  0.285  1.0
  C  C5  1  0.705  0.705  0.715  1.0
  C  C6  1  0.000  0.000  0.500  1.0
[/CIF]
.
The structure described by Sm2Cr2C3 crystallizes in the monoclinic C2/m space group. Sm(1) is bonded in a 3-coordinate geometry to two equivalent C(2) and four equivalent C(1) atoms. Cr(1) is bonded to one C(2) and three equivalent C(1) 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 in a 7-coordinate geometry to four equivalent Sm(1) and three equivalent Cr(1) atoms. In the second C site, C(2) is bonded to four equivalent Sm(1) and two equivalent Cr(1) atoms to form edge-sharing CSm4Cr2 octahedra. is represented by the CIF file [CIF]
data_Sm2Cr2C3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.448
_cell_length_b   5.448
_cell_length_c   5.684
_cell_angle_alpha   75.727
_cell_angle_beta   75.727
_cell_angle_gamma   37.164
_symmetry_Int_Tables_number   1
_cell_volume   98.428
_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
  Sm  Sm0  1  0.399  0.399  0.818  1.0
  Sm  Sm1  1  0.601  0.601  0.182  1.0
  Cr  Cr2  1  0.159  0.159  0.602  1.0
  Cr  Cr3  1  0.841  0.841  0.398  1.0
  C  C4  1  0.295  0.295  0.285  1.0
  C  C5  1  0.705  0.705  0.715  1.0
  C  C6  1  0.000  0.000  0.500  1.0
[/CIF]
.