data_KMgAg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.65
_cell_length_b   10.65
_cell_length_c   10.65
_cell_angle_alpha   17.76
_cell_angle_beta   17.76
_cell_angle_gamma   17.76
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KMgAg2
_chemical_formula_sum   'K1 Mg1 Ag2'
_cell_volume   98.24
_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
  K  K2  1  0.0  0.0  0.57  1.0
  Mg  Mg3  1  0.0  0.0  0.37  1.0
  Ag  Ag0  1  0.0  0.0  0.04  1.0
  Ag  Ag1  1  0.0  0.0  0.2  1.0

data_KMgAg2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.7
_cell_length_b   3.29
_cell_length_c   10.65
_cell_angle_alpha   90.0
_cell_angle_beta   100.27
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   KMgAg2
_chemical_formula_sum   'K2 Mg2 Ag4'
_cell_volume   196.47
_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
  K  K0  2  0.0  0.0  0.43  1.0
  Mg  Mg1  2  0.0  0.0  0.63  1.0
  Ag  Ag2  2  0.0  0.0  0.8  1.0
  Ag  Ag3  2  0.0  0.0  0.96  1.0

K Mg Ag Ag
KMgAg2 is Cyanogen Chloride-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two KMgAg2 clusters. K(1) is bonded in a single-bond geometry to one Mg(1) atom. The K(1)-Mg(1) bond length is 2.04 Å. Mg(1) is bonded in a linear geometry to one K(1) and one Ag(2) atom. The Mg(1)-Ag(2) bond length is 1.90 Å. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a single-bond geometry to one Ag(2) atom. The Ag(1)-Ag(2) bond length is 1.66 Å. In the second Ag site, Ag(2) is bonded in a distorted linear geometry to one Mg(1) and one Ag(1) atom.