data_MgGaAg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.31
_cell_length_b   4.31
_cell_length_c   3.85
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgGaAg2
_chemical_formula_sum   'Mg1 Ga1 Ag2'
_cell_volume   71.52
_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
  Mg  Mg3  1  0.0  0.0  0.0  1.0
  Ga  Ga2  1  0.16  0.16  0.0  1.0
  Ag  Ag0  1  0.0  0.16  0.92  1.0
  Ag  Ag1  1  0.16  0.0  0.92  1.0

data_MgGaAg2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.1
_cell_length_b   6.1
_cell_length_c   3.85
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   MgGaAg2
_chemical_formula_sum   'Mg2 Ga2 Ag4'
_cell_volume   143.04
_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
  Mg  Mg0  2  0.0  0.0  0.0  1.0
  Ga  Ga1  2  0.16  0.0  0.0  1.0
  Ag  Ag2  4  0.08  0.08  0.92  1.0

Mg Ga Ag Ag
Mg Ga Ag Ag 0 3 o o - 0 2 o o - 1 2 o o - 1 3 o o - 
MgAg2Ga is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two MgAg2Ga clusters. Mg(1) is bonded in a distorted L-shaped geometry to two equivalent Ag(1) and one Ga(1) atom. Both Mg(1)-Ag(1) bond lengths are 0.74 Å. The Mg(1)-Ga(1) bond length is 0.95 Å. Ag(1) is bonded in a distorted L-shaped geometry to one Mg(1) and one Ga(1) atom. The Ag(1)-Ga(1) bond length is 0.74 Å. Ga(1) is bonded in a 3-coordinate geometry to one Mg(1) and two equivalent Ag(1) atoms.