The compound described by Cr2GaC is H-Phase structured and crystallizes in the hexagonal P6_3/mmc space group. Cr(1) is bonded in a 3-coordinate geometry to three equivalent Ga(1) and three equivalent C(1) atoms. Ga(1) is bonded to six equivalent Cr(1) and six equivalent Ga(1) atoms to form distorted GaCr6Ga6 cuboctahedra that share corners with six equivalent Ga(1)Cr6Ga6 cuboctahedra, corners with six equivalent C(1)Cr6 octahedra, edges with six equivalent Ga(1)Cr6Ga6 cuboctahedra, edges with six equivalent C(1)Cr6 octahedra, and faces with six equivalent Ga(1)Cr6Ga6 cuboctahedra. The corner-sharing octahedral tilt angles are 18°. C(1) is bonded to six equivalent Cr(1) atoms to form CCr6 octahedra that share corners with six equivalent Ga(1)Cr6Ga6 cuboctahedra, edges with six equivalent Ga(1)Cr6Ga6 cuboctahedra, and edges with six equivalent C(1)Cr6 octahedra. is represented by the CIF file [CIF]
data_Cr2GaC
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.843
_cell_length_b   2.843
_cell_length_c   12.421
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   86.973
_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
  Cr  Cr0  1  0.333  0.667  0.086  1.0
  Cr  Cr1  1  0.667  0.333  0.586  1.0
  Cr  Cr2  1  0.667  0.333  0.914  1.0
  Cr  Cr3  1  0.333  0.667  0.414  1.0
  Ga  Ga4  1  0.333  0.667  0.750  1.0
  Ga  Ga5  1  0.667  0.333  0.250  1.0
  C  C6  1  0.000  0.000  0.500  1.0
  C  C7  1  0.000  0.000  0.000  1.0
[/CIF]
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The compound described by Cr2GaC is H-Phase structured and crystallizes in the hexagonal P6_3/mmc space group. Cr(1) is bonded in a 3-coordinate geometry to three equivalent Ga(1) and three equivalent C(1) atoms. Ga(1) is bonded to six equivalent Cr(1) and six equivalent Ga(1) atoms to form distorted GaCr6Ga6 cuboctahedra that share corners with six equivalent Ga(1)Cr6Ga6 cuboctahedra, corners with six equivalent C(1)Cr6 octahedra, edges with six equivalent Ga(1)Cr6Ga6 cuboctahedra, edges with six equivalent C(1)Cr6 octahedra, and faces with six equivalent Ga(1)Cr6Ga6 cuboctahedra. The corner-sharing octahedral tilt angles are 18°. C(1) is bonded to six equivalent Cr(1) atoms to form CCr6 octahedra that share corners with six equivalent Ga(1)Cr6Ga6 cuboctahedra, edges with six equivalent Ga(1)Cr6Ga6 cuboctahedra, and edges with six equivalent C(1)Cr6 octahedra. is represented by the CIF file [CIF]
data_Cr2GaC
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.843
_cell_length_b   2.843
_cell_length_c   12.421
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   86.973
_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
  Cr  Cr0  1  0.333  0.667  0.086  1.0
  Cr  Cr1  1  0.667  0.333  0.586  1.0
  Cr  Cr2  1  0.667  0.333  0.914  1.0
  Cr  Cr3  1  0.333  0.667  0.414  1.0
  Ga  Ga4  1  0.333  0.667  0.750  1.0
  Ga  Ga5  1  0.667  0.333  0.250  1.0
  C  C6  1  0.000  0.000  0.500  1.0
  C  C7  1  0.000  0.000  0.000  1.0
[/CIF]
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