The crystal structure described by Sr7Au3 crystallizes in the hexagonal P6_3mc space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a distorted L-shaped geometry to two equivalent Au(1) atoms. In the second Sr site, Sr(3) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Au(1) atoms. In the third Sr site, Sr(2) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Au(1) atoms. Au(1) is bonded in a 6-coordinate geometry to one Sr(2), two equivalent Sr(1), and three equivalent Sr(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr7Au3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.118
_cell_length_b   11.118
_cell_length_c   7.206
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   771.379
_cell_formula_units_Z   2
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  0.458  0.542  0.569  1.0
  Sr  Sr1  1  0.916  0.458  0.069  1.0
  Sr  Sr2  1  0.542  0.084  0.069  1.0
  Sr  Sr3  1  0.458  0.916  0.569  1.0
  Sr  Sr4  1  0.084  0.542  0.569  1.0
  Sr  Sr5  1  0.542  0.458  0.069  1.0
  Sr  Sr6  1  0.333  0.667  0.041  1.0
  Sr  Sr7  1  0.667  0.333  0.541  1.0
  Sr  Sr8  1  0.125  0.875  0.246  1.0
  Sr  Sr9  1  0.250  0.125  0.746  1.0
  Sr  Sr10  1  0.875  0.750  0.746  1.0
  Sr  Sr11  1  0.125  0.250  0.246  1.0
  Sr  Sr12  1  0.750  0.875  0.246  1.0
  Sr  Sr13  1  0.875  0.125  0.746  1.0
  Au  Au14  1  0.188  0.812  0.833  1.0
  Au  Au15  1  0.377  0.188  0.333  1.0
  Au  Au16  1  0.812  0.623  0.333  1.0
  Au  Au17  1  0.188  0.377  0.833  1.0
  Au  Au18  1  0.623  0.812  0.833  1.0
  Au  Au19  1  0.812  0.188  0.333  1.0
[/CIF]
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The crystal structure described by Sr7Au3 crystallizes in the hexagonal P6_3mc space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a distorted L-shaped geometry to two equivalent Au(1) atoms. In the second Sr site, Sr(3) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Au(1) atoms. In the third Sr site, Sr(2) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Au(1) atoms. Au(1) is bonded in a 6-coordinate geometry to one Sr(2), two equivalent Sr(1), and three equivalent Sr(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr7Au3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.118
_cell_length_b   11.118
_cell_length_c   7.206
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   771.379
_cell_formula_units_Z   2
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  0.458  0.542  0.569  1.0
  Sr  Sr1  1  0.916  0.458  0.069  1.0
  Sr  Sr2  1  0.542  0.084  0.069  1.0
  Sr  Sr3  1  0.458  0.916  0.569  1.0
  Sr  Sr4  1  0.084  0.542  0.569  1.0
  Sr  Sr5  1  0.542  0.458  0.069  1.0
  Sr  Sr6  1  0.333  0.667  0.041  1.0
  Sr  Sr7  1  0.667  0.333  0.541  1.0
  Sr  Sr8  1  0.125  0.875  0.246  1.0
  Sr  Sr9  1  0.250  0.125  0.746  1.0
  Sr  Sr10  1  0.875  0.750  0.746  1.0
  Sr  Sr11  1  0.125  0.250  0.246  1.0
  Sr  Sr12  1  0.750  0.875  0.246  1.0
  Sr  Sr13  1  0.875  0.125  0.746  1.0
  Au  Au14  1  0.188  0.812  0.833  1.0
  Au  Au15  1  0.377  0.188  0.333  1.0
  Au  Au16  1  0.812  0.623  0.333  1.0
  Au  Au17  1  0.188  0.377  0.833  1.0
  Au  Au18  1  0.623  0.812  0.833  1.0
  Au  Au19  1  0.812  0.188  0.333  1.0
[/CIF]
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