The compound described by SrAgCu4 crystallizes in the orthorhombic Cmmm space group. Sr(1) is bonded in a 18-coordinate geometry to four equivalent Ag(1), six equivalent Cu(1), and eight equivalent Cu(2) atoms. Ag(1) is bonded to four equivalent Sr(1), four equivalent Cu(1), and four equivalent Cu(2) atoms to form AgSr4Cu8 cuboctahedra that share corners with eight equivalent Ag(1)Sr4Cu8 cuboctahedra, corners with eight equivalent Cu(2)Sr4Cu6Ag2 cuboctahedra, edges with two equivalent Ag(1)Sr4Cu8 cuboctahedra, edges with eight equivalent Cu(2)Sr4Cu6Ag2 cuboctahedra, faces with two equivalent Ag(1)Sr4Cu8 cuboctahedra, and faces with eight equivalent Cu(2)Sr4Cu6Ag2 cuboctahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 11-coordinate geometry to three equivalent Sr(1), two equivalent Ag(1), two equivalent Cu(1), and four equivalent Cu(2) atoms. In the second Cu site, Cu(2) is bonded to four equivalent Sr(1), two equivalent Ag(1), two equivalent Cu(2), and four equivalent Cu(1) atoms to form CuSr4Cu6Ag2 cuboctahedra that share corners with four equivalent Ag(1)Sr4Cu8 cuboctahedra, corners with twelve equivalent Cu(2)Sr4Cu6Ag2 cuboctahedra, edges with four equivalent Ag(1)Sr4Cu8 cuboctahedra, edges with six equivalent Cu(2)Sr4Cu6Ag2 cuboctahedra, faces with four equivalent Ag(1)Sr4Cu8 cuboctahedra, and faces with six equivalent Cu(2)Sr4Cu6Ag2 cuboctahedra. is represented by the CIF file [CIF]
data_SrCu4Ag
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.178
_cell_length_b   5.022
_cell_length_c   5.545
_cell_angle_alpha   116.930
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   103.735
_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  0.000  1.000  0.000  1.0
  Cu  Cu1  1  0.000  0.308  0.616  1.0
  Cu  Cu2  1  0.000  0.692  0.384  1.0
  Cu  Cu3  1  0.500  0.500  0.500  1.0
  Cu  Cu4  1  0.500  1.000  0.500  1.0
  Ag  Ag5  1  0.500  0.500  0.000  1.0
[/CIF]
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The compound described by SrAgCu4 crystallizes in the orthorhombic Cmmm space group. Sr(1) is bonded in a 18-coordinate geometry to four equivalent Ag(1), six equivalent Cu(1), and eight equivalent Cu(2) atoms. Ag(1) is bonded to four equivalent Sr(1), four equivalent Cu(1), and four equivalent Cu(2) atoms to form AgSr4Cu8 cuboctahedra that share corners with eight equivalent Ag(1)Sr4Cu8 cuboctahedra, corners with eight equivalent Cu(2)Sr4Cu6Ag2 cuboctahedra, edges with two equivalent Ag(1)Sr4Cu8 cuboctahedra, edges with eight equivalent Cu(2)Sr4Cu6Ag2 cuboctahedra, faces with two equivalent Ag(1)Sr4Cu8 cuboctahedra, and faces with eight equivalent Cu(2)Sr4Cu6Ag2 cuboctahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 11-coordinate geometry to three equivalent Sr(1), two equivalent Ag(1), two equivalent Cu(1), and four equivalent Cu(2) atoms. In the second Cu site, Cu(2) is bonded to four equivalent Sr(1), two equivalent Ag(1), two equivalent Cu(2), and four equivalent Cu(1) atoms to form CuSr4Cu6Ag2 cuboctahedra that share corners with four equivalent Ag(1)Sr4Cu8 cuboctahedra, corners with twelve equivalent Cu(2)Sr4Cu6Ag2 cuboctahedra, edges with four equivalent Ag(1)Sr4Cu8 cuboctahedra, edges with six equivalent Cu(2)Sr4Cu6Ag2 cuboctahedra, faces with four equivalent Ag(1)Sr4Cu8 cuboctahedra, and faces with six equivalent Cu(2)Sr4Cu6Ag2 cuboctahedra. is represented by the CIF file [CIF]
data_SrCu4Ag
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.178
_cell_length_b   5.022
_cell_length_c   5.545
_cell_angle_alpha   116.930
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   103.735
_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  0.000  1.000  0.000  1.0
  Cu  Cu1  1  0.000  0.308  0.616  1.0
  Cu  Cu2  1  0.000  0.692  0.384  1.0
  Cu  Cu3  1  0.500  0.500  0.500  1.0
  Cu  Cu4  1  0.500  1.000  0.500  1.0
  Ag  Ag5  1  0.500  0.500  0.000  1.0
[/CIF]
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