data_Na2GaCo
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.37
_cell_length_b   3.37
_cell_length_c   6.9
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2GaCo
_chemical_formula_sum   'Na2 Ga1 Co1'
_cell_volume   78.38
_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
  Na  Na2  1  0.69  0.69  0.31  1.0
  Na  Na3  1  0.69  0.69  0.59  1.0
  Ga  Ga1  1  0.0  0.0  0.45  1.0
  Co  Co0  1  0.0  0.0  0.0  1.0

data_Na2GaCo
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.77
_cell_length_b   4.77
_cell_length_c   6.9
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Na2GaCo
_chemical_formula_sum   'Na4 Ga2 Co2'
_cell_volume   156.76
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Na  Na0  2  0.19  0.5  0.31  1.0
  Na  Na1  2  0.19  0.5  0.59  1.0
  Ga  Ga2  2  0.0  0.0  0.45  1.0
  Co  Co3  2  0.0  0.0  0.0  1.0

Na Na Ga Co
Na2CoGa crystallizes in the monoclinic Cm space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 1-coordinate geometry to three equivalent Co(1) and one Ga(1) atom. There is one shorter (2.63 Å) and two longer (3.33 Å) Na(1)-Co(1) bond lengths. The Na(1)-Ga(1) bond length is 1.77 Å. In the second Na site, Na(2) is bonded in a distorted single-bond geometry to one Co(1) and one Ga(1) atom. The Na(2)-Co(1) bond length is 3.22 Å. The Na(2)-Ga(1) bond length is 1.77 Å. Co(1) is bonded in a 4-coordinate geometry to one Na(2) and three equivalent Na(1) atoms. Ga(1) is bonded in a 2-coordinate geometry to one Na(1) and one Na(2) atom.