The structure described by SiC2 crystallizes in the cubic Pa-3 space group. Si(1) is bonded to six equivalent C(1) atoms to form SiC6 octahedra that share corners with twelve equivalent Si(1)C6 octahedra and corners with six equivalent C(1)Si3C tetrahedra. The corner-sharing octahedral tilt angles are 71°. C(1) is bonded to three equivalent Si(1) and one C(1) atom to form CSi3C tetrahedra that share corners with three equivalent Si(1)C6 octahedra and corners with fifteen equivalent C(1)Si3C tetrahedra. The corner-sharing octahedral tilt angles are 70°. is represented by the CIF card [CIF]
data_SiC2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.786
_cell_length_b   4.786
_cell_length_c   4.786
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   109.641
_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
  Si  Si0  1  0.500  0.500  0.000  1.0
  Si  Si1  1  0.500  0.000  0.500  1.0
  Si  Si2  1  0.000  0.500  0.500  1.0
  Si  Si3  1  0.000  0.000  0.000  1.0
  C  C4  1  0.082  0.918  0.418  1.0
  C  C5  1  0.918  0.418  0.082  1.0
  C  C6  1  0.418  0.082  0.918  1.0
  C  C7  1  0.582  0.582  0.582  1.0
  C  C8  1  0.918  0.082  0.582  1.0
  C  C9  1  0.082  0.582  0.918  1.0
  C  C10  1  0.582  0.918  0.082  1.0
  C  C11  1  0.418  0.418  0.418  1.0
[/CIF]
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The structure described by SiC2 crystallizes in the cubic Pa-3 space group. Si(1) is bonded to six equivalent C(1) atoms to form SiC6 octahedra that share corners with twelve equivalent Si(1)C6 octahedra and corners with six equivalent C(1)Si3C tetrahedra. The corner-sharing octahedral tilt angles are 71°. C(1) is bonded to three equivalent Si(1) and one C(1) atom to form CSi3C tetrahedra that share corners with three equivalent Si(1)C6 octahedra and corners with fifteen equivalent C(1)Si3C tetrahedra. The corner-sharing octahedral tilt angles are 70°. is represented by the CIF card [CIF]
data_SiC2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.786
_cell_length_b   4.786
_cell_length_c   4.786
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   109.641
_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
  Si  Si0  1  0.500  0.500  0.000  1.0
  Si  Si1  1  0.500  0.000  0.500  1.0
  Si  Si2  1  0.000  0.500  0.500  1.0
  Si  Si3  1  0.000  0.000  0.000  1.0
  C  C4  1  0.082  0.918  0.418  1.0
  C  C5  1  0.918  0.418  0.082  1.0
  C  C6  1  0.418  0.082  0.918  1.0
  C  C7  1  0.582  0.582  0.582  1.0
  C  C8  1  0.918  0.082  0.582  1.0
  C  C9  1  0.082  0.582  0.918  1.0
  C  C10  1  0.582  0.918  0.082  1.0
  C  C11  1  0.418  0.418  0.418  1.0
[/CIF]
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