The crystal structure described by LaCu9Sn4 crystallizes in the tetragonal I4/mcm space group. La(1) is bonded in a 24-coordinate geometry to eight equivalent Cu(1), eight equivalent Cu(3), and eight equivalent Sn(1) atoms. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 12-coordinate geometry to two equivalent La(1), one Cu(1), one Cu(2), four equivalent Cu(3), and four equivalent Sn(1) atoms. In the second Cu site, Cu(2) is bonded in a distorted cuboctahedral geometry to four equivalent Cu(1), four equivalent Cu(3), and four equivalent Sn(1) atoms. In the third Cu site, Cu(3) is bonded in a 12-coordinate geometry to two equivalent La(1), one Cu(2), three equivalent Cu(3), four equivalent Cu(1), and two equivalent Sn(1) atoms. Sn(1) is bonded in a 12-coordinate geometry to two equivalent La(1), one Cu(2), two equivalent Cu(3), four equivalent Cu(1), and three equivalent Sn(1) atoms. is represented by the CIF card [CIF]
data_LaCu9Sn4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.730
_cell_length_b   8.730
_cell_length_c   8.730
_cell_angle_alpha   117.410
_cell_angle_beta   117.410
_cell_angle_gamma   94.548
_symmetry_Int_Tables_number   1
_cell_volume   487.227
_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
  La  La0  1  0.750  0.750  0.000  1.0
  La  La1  1  0.250  0.250  0.000  1.0
  Cu  Cu2  1  0.331  0.831  0.883  1.0
  Cu  Cu3  1  0.669  0.169  0.117  1.0
  Cu  Cu4  1  0.948  0.448  0.117  1.0
  Cu  Cu5  1  0.831  0.948  0.500  1.0
  Cu  Cu6  1  0.552  0.669  0.500  1.0
  Cu  Cu7  1  0.052  0.552  0.883  1.0
  Cu  Cu8  1  0.169  0.052  0.500  1.0
  Cu  Cu9  1  0.448  0.331  0.500  1.0
  Cu  Cu10  1  0.000  0.500  0.500  1.0
  Cu  Cu11  1  0.500  0.000  0.500  1.0
  Cu  Cu12  1  0.785  0.285  0.712  1.0
  Cu  Cu13  1  0.215  0.715  0.288  1.0
  Cu  Cu14  1  0.573  0.073  0.288  1.0
  Cu  Cu15  1  0.285  0.573  0.500  1.0
  Cu  Cu16  1  0.927  0.215  0.500  1.0
  Cu  Cu17  1  0.427  0.927  0.712  1.0
  Cu  Cu18  1  0.715  0.427  0.500  1.0
  Cu  Cu19  1  0.073  0.785  0.500  1.0
  Sn  Sn20  1  0.718  0.546  0.264  1.0
  Sn  Sn21  1  0.282  0.454  0.736  1.0
  Sn  Sn22  1  0.546  0.282  0.828  1.0
  Sn  Sn23  1  0.218  0.954  0.172  1.0
  Sn  Sn24  1  0.454  0.718  0.172  1.0
  Sn  Sn25  1  0.782  0.046  0.828  1.0
  Sn  Sn26  1  0.046  0.218  0.264  1.0
  Sn  Sn27  1  0.954  0.782  0.736  1.0
[/CIF]
.
The crystal structure described by LaCu9Sn4 crystallizes in the tetragonal I4/mcm space group. La(1) is bonded in a 24-coordinate geometry to eight equivalent Cu(1), eight equivalent Cu(3), and eight equivalent Sn(1) atoms. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 12-coordinate geometry to two equivalent La(1), one Cu(1), one Cu(2), four equivalent Cu(3), and four equivalent Sn(1) atoms. In the second Cu site, Cu(2) is bonded in a distorted cuboctahedral geometry to four equivalent Cu(1), four equivalent Cu(3), and four equivalent Sn(1) atoms. In the third Cu site, Cu(3) is bonded in a 12-coordinate geometry to two equivalent La(1), one Cu(2), three equivalent Cu(3), four equivalent Cu(1), and two equivalent Sn(1) atoms. Sn(1) is bonded in a 12-coordinate geometry to two equivalent La(1), one Cu(2), two equivalent Cu(3), four equivalent Cu(1), and three equivalent Sn(1) atoms. is represented by the CIF card [CIF]
data_LaCu9Sn4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.730
_cell_length_b   8.730
_cell_length_c   8.730
_cell_angle_alpha   117.410
_cell_angle_beta   117.410
_cell_angle_gamma   94.548
_symmetry_Int_Tables_number   1
_cell_volume   487.227
_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
  La  La0  1  0.750  0.750  0.000  1.0
  La  La1  1  0.250  0.250  0.000  1.0
  Cu  Cu2  1  0.331  0.831  0.883  1.0
  Cu  Cu3  1  0.669  0.169  0.117  1.0
  Cu  Cu4  1  0.948  0.448  0.117  1.0
  Cu  Cu5  1  0.831  0.948  0.500  1.0
  Cu  Cu6  1  0.552  0.669  0.500  1.0
  Cu  Cu7  1  0.052  0.552  0.883  1.0
  Cu  Cu8  1  0.169  0.052  0.500  1.0
  Cu  Cu9  1  0.448  0.331  0.500  1.0
  Cu  Cu10  1  0.000  0.500  0.500  1.0
  Cu  Cu11  1  0.500  0.000  0.500  1.0
  Cu  Cu12  1  0.785  0.285  0.712  1.0
  Cu  Cu13  1  0.215  0.715  0.288  1.0
  Cu  Cu14  1  0.573  0.073  0.288  1.0
  Cu  Cu15  1  0.285  0.573  0.500  1.0
  Cu  Cu16  1  0.927  0.215  0.500  1.0
  Cu  Cu17  1  0.427  0.927  0.712  1.0
  Cu  Cu18  1  0.715  0.427  0.500  1.0
  Cu  Cu19  1  0.073  0.785  0.500  1.0
  Sn  Sn20  1  0.718  0.546  0.264  1.0
  Sn  Sn21  1  0.282  0.454  0.736  1.0
  Sn  Sn22  1  0.546  0.282  0.828  1.0
  Sn  Sn23  1  0.218  0.954  0.172  1.0
  Sn  Sn24  1  0.454  0.718  0.172  1.0
  Sn  Sn25  1  0.782  0.046  0.828  1.0
  Sn  Sn26  1  0.046  0.218  0.264  1.0
  Sn  Sn27  1  0.954  0.782  0.736  1.0
[/CIF]
.