The structure described by Yb2AlSi2 crystallizes in the tetragonal P4/mbm space group. Yb(1) is bonded in a 6-coordinate geometry to six equivalent Si(1) atoms. Al(1) is bonded in a distorted square co-planar geometry to four equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to six equivalent Yb(1), two equivalent Al(1), and one Si(1) atom. is represented by the CIF file [CIF]
data_Yb2AlSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.823
_cell_length_b   6.823
_cell_length_c   4.587
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   213.536
_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
  Yb  Yb0  1  0.325  0.825  0.500  1.0
  Yb  Yb1  1  0.825  0.675  0.500  1.0
  Yb  Yb2  1  0.175  0.325  0.500  1.0
  Yb  Yb3  1  0.675  0.175  0.500  1.0
  Al  Al4  1  0.500  0.500  0.000  1.0
  Al  Al5  1  0.000  0.000  0.000  1.0
  Si  Si6  1  0.624  0.876  0.000  1.0
  Si  Si7  1  0.876  0.376  0.000  1.0
  Si  Si8  1  0.376  0.124  0.000  1.0
  Si  Si9  1  0.124  0.624  0.000  1.0
[/CIF]
.
The structure described by Yb2AlSi2 crystallizes in the tetragonal P4/mbm space group. Yb(1) is bonded in a 6-coordinate geometry to six equivalent Si(1) atoms. Al(1) is bonded in a distorted square co-planar geometry to four equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to six equivalent Yb(1), two equivalent Al(1), and one Si(1) atom. is represented by the CIF file [CIF]
data_Yb2AlSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.823
_cell_length_b   6.823
_cell_length_c   4.587
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   213.536
_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
  Yb  Yb0  1  0.325  0.825  0.500  1.0
  Yb  Yb1  1  0.825  0.675  0.500  1.0
  Yb  Yb2  1  0.175  0.325  0.500  1.0
  Yb  Yb3  1  0.675  0.175  0.500  1.0
  Al  Al4  1  0.500  0.500  0.000  1.0
  Al  Al5  1  0.000  0.000  0.000  1.0
  Si  Si6  1  0.624  0.876  0.000  1.0
  Si  Si7  1  0.876  0.376  0.000  1.0
  Si  Si8  1  0.376  0.124  0.000  1.0
  Si  Si9  1  0.124  0.624  0.000  1.0
[/CIF]
.