data_SrMgAg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.78
_cell_length_b   4.78
_cell_length_c   6.11
_cell_angle_alpha   111.3
_cell_angle_beta   111.3
_cell_angle_gamma   59.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrMgAg2
_chemical_formula_sum   'Sr1 Mg1 Ag2'
_cell_volume   108.8
_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
  Sr  Sr3  1  0.14  0.0  0.15  1.0
  Mg  Mg2  1  0.87  0.0  0.91  1.0
  Ag  Ag0  1  0.03  0.0  0.77  1.0
  Ag  Ag1  1  0.62  0.0  0.49  1.0

data_SrMgAg2
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.71
_cell_length_b   4.78
_cell_length_c   6.11
_cell_angle_alpha   111.3
_cell_angle_beta   90.0
_cell_angle_gamma   119.5
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrMgAg2
_chemical_formula_sum   'Sr1 Mg1 Ag2'
_cell_volume   108.8
_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
  Sr  Sr0  1  0.0  0.86  0.85  1.0
  Mg  Mg1  1  0.0  0.13  0.09  1.0
  Ag  Ag2  1  0.0  0.38  0.51  1.0
  Ag  Ag3  1  0.0  0.97  0.23  1.0

Sr Mg Ag Ag
Sr Mg Ag Ag 0 1 - o - 0 3 o o o 1 2 + o o 1 3 o o o 2 3 - o o 
SrMgAg2 crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one SrMgAg2 cluster. Sr(1) is bonded in a 2-coordinate geometry to one Mg(1) and one Ag(2) atom. The Sr(1)-Mg(1) bond length is 1.56 Å. The Sr(1)-Ag(2) bond length is 2.46 Å. Mg(1) is bonded in a distorted L-shaped geometry to one Sr(1) and one Ag(1) atom. The Mg(1)-Ag(1) bond length is 1.38 Å. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a single-bond geometry to one Mg(1) atom. In the second Ag site, Ag(2) is bonded in a distorted single-bond geometry to one Sr(1) atom.