The compound described by Sm2C3 is Plutonium carbide structured and crystallizes in the cubic I-43d space group. Sm(1) is bonded in a 6-coordinate geometry to six equivalent C(1) atoms. C(1) is bonded to four equivalent Sm(1) and one C(1) atom to form a mixture of distorted corner and edge-sharing CSm4C trigonal bipyramids. is represented by the CIF file [CIF]
data_Sm2C3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.329
_cell_length_b   7.329
_cell_length_c   7.329
_cell_angle_alpha   109.471
_cell_angle_beta   109.471
_cell_angle_gamma   109.471
_symmetry_Int_Tables_number   1
_cell_volume   303.045
_cell_formula_units_Z   4
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  0.398  0.500  0.000  1.0
  Sm  Sm1  1  0.000  0.398  0.500  1.0
  Sm  Sm2  1  0.500  0.000  0.398  1.0
  Sm  Sm3  1  0.898  0.500  0.000  1.0
  Sm  Sm4  1  0.102  0.102  0.102  1.0
  Sm  Sm5  1  0.000  0.898  0.500  1.0
  Sm  Sm6  1  0.602  0.602  0.602  1.0
  Sm  Sm7  1  0.500  0.000  0.898  1.0
  C  C8  1  0.703  0.453  0.250  1.0
  C  C9  1  0.750  0.797  0.047  1.0
  C  C10  1  0.547  0.297  0.250  1.0
  C  C11  1  0.250  0.547  0.297  1.0
  C  C12  1  0.953  0.203  0.750  1.0
  C  C13  1  0.750  0.953  0.203  1.0
  C  C14  1  0.797  0.047  0.750  1.0
  C  C15  1  0.203  0.750  0.953  1.0
  C  C16  1  0.047  0.750  0.797  1.0
  C  C17  1  0.453  0.250  0.703  1.0
  C  C18  1  0.250  0.703  0.453  1.0
  C  C19  1  0.297  0.250  0.547  1.0
[/CIF]
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The compound described by Sm2C3 is Plutonium carbide structured and crystallizes in the cubic I-43d space group. Sm(1) is bonded in a 6-coordinate geometry to six equivalent C(1) atoms. C(1) is bonded to four equivalent Sm(1) and one C(1) atom to form a mixture of distorted corner and edge-sharing CSm4C trigonal bipyramids. is represented by the CIF file [CIF]
data_Sm2C3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.329
_cell_length_b   7.329
_cell_length_c   7.329
_cell_angle_alpha   109.471
_cell_angle_beta   109.471
_cell_angle_gamma   109.471
_symmetry_Int_Tables_number   1
_cell_volume   303.045
_cell_formula_units_Z   4
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  0.398  0.500  0.000  1.0
  Sm  Sm1  1  0.000  0.398  0.500  1.0
  Sm  Sm2  1  0.500  0.000  0.398  1.0
  Sm  Sm3  1  0.898  0.500  0.000  1.0
  Sm  Sm4  1  0.102  0.102  0.102  1.0
  Sm  Sm5  1  0.000  0.898  0.500  1.0
  Sm  Sm6  1  0.602  0.602  0.602  1.0
  Sm  Sm7  1  0.500  0.000  0.898  1.0
  C  C8  1  0.703  0.453  0.250  1.0
  C  C9  1  0.750  0.797  0.047  1.0
  C  C10  1  0.547  0.297  0.250  1.0
  C  C11  1  0.250  0.547  0.297  1.0
  C  C12  1  0.953  0.203  0.750  1.0
  C  C13  1  0.750  0.953  0.203  1.0
  C  C14  1  0.797  0.047  0.750  1.0
  C  C15  1  0.203  0.750  0.953  1.0
  C  C16  1  0.047  0.750  0.797  1.0
  C  C17  1  0.453  0.250  0.703  1.0
  C  C18  1  0.250  0.703  0.453  1.0
  C  C19  1  0.297  0.250  0.547  1.0
[/CIF]
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