The material structure described by SrCa(Ni2Sn)4 crystallizes in the tetragonal I422 space group. Sr(1) is bonded in a 8-coordinate geometry to eight equivalent Ni(1) and eight Sn(1,1,1) atoms. Ca(1) is bonded in a 8-coordinate geometry to eight equivalent Ni(1) and eight Sn(1,1,1) atoms. Ni(1) is bonded in a 10-coordinate geometry to one Sr(1); one Ca(1); four equivalent Ni(1); and four Sn(1,1,1) atoms. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 12-coordinate geometry to two equivalent Sr(1), two equivalent Ca(1), and eight equivalent Ni(1) atoms. In the second Sn site, Sn(1) is bonded in a 12-coordinate geometry to two equivalent Sr(1), two equivalent Ca(1), and eight equivalent Ni(1) atoms. In the third Sn site, Sn(1) is bonded in a 12-coordinate geometry to two equivalent Sr(1), two equivalent Ca(1), and eight equivalent Ni(1) atoms. is represented by the CIF file [CIF]
data_SrCa(Ni2Sn)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.765
_cell_length_b   6.765
_cell_length_c   6.765
_cell_angle_alpha   109.588
_cell_angle_beta   109.588
_cell_angle_gamma   109.239
_symmetry_Int_Tables_number   1
_cell_volume   238.345
_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  0.000  0.000  1.0
  Ca  Ca1  1  0.500  0.500  0.000  1.0
  Ni  Ni2  1  0.948  0.723  0.497  1.0
  Ni  Ni3  1  0.226  0.451  0.503  1.0
  Ni  Ni4  1  0.451  0.948  0.225  1.0
  Ni  Ni5  1  0.723  0.226  0.775  1.0
  Ni  Ni6  1  0.549  0.774  0.497  1.0
  Ni  Ni7  1  0.277  0.052  0.503  1.0
  Ni  Ni8  1  0.052  0.549  0.775  1.0
  Ni  Ni9  1  0.774  0.277  0.225  1.0
  Sn  Sn10  1  0.591  0.409  0.500  1.0
  Sn  Sn11  1  0.909  0.091  0.500  1.0
  Sn  Sn12  1  0.091  0.591  0.181  1.0
  Sn  Sn13  1  0.409  0.909  0.819  1.0
[/CIF]
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The material structure described by SrCa(Ni2Sn)4 crystallizes in the tetragonal I422 space group. Sr(1) is bonded in a 8-coordinate geometry to eight equivalent Ni(1) and eight Sn(1,1,1) atoms. Ca(1) is bonded in a 8-coordinate geometry to eight equivalent Ni(1) and eight Sn(1,1,1) atoms. Ni(1) is bonded in a 10-coordinate geometry to one Sr(1); one Ca(1); four equivalent Ni(1); and four Sn(1,1,1) atoms. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 12-coordinate geometry to two equivalent Sr(1), two equivalent Ca(1), and eight equivalent Ni(1) atoms. In the second Sn site, Sn(1) is bonded in a 12-coordinate geometry to two equivalent Sr(1), two equivalent Ca(1), and eight equivalent Ni(1) atoms. In the third Sn site, Sn(1) is bonded in a 12-coordinate geometry to two equivalent Sr(1), two equivalent Ca(1), and eight equivalent Ni(1) atoms. is represented by the CIF file [CIF]
data_SrCa(Ni2Sn)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.765
_cell_length_b   6.765
_cell_length_c   6.765
_cell_angle_alpha   109.588
_cell_angle_beta   109.588
_cell_angle_gamma   109.239
_symmetry_Int_Tables_number   1
_cell_volume   238.345
_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  0.000  0.000  1.0
  Ca  Ca1  1  0.500  0.500  0.000  1.0
  Ni  Ni2  1  0.948  0.723  0.497  1.0
  Ni  Ni3  1  0.226  0.451  0.503  1.0
  Ni  Ni4  1  0.451  0.948  0.225  1.0
  Ni  Ni5  1  0.723  0.226  0.775  1.0
  Ni  Ni6  1  0.549  0.774  0.497  1.0
  Ni  Ni7  1  0.277  0.052  0.503  1.0
  Ni  Ni8  1  0.052  0.549  0.775  1.0
  Ni  Ni9  1  0.774  0.277  0.225  1.0
  Sn  Sn10  1  0.591  0.409  0.500  1.0
  Sn  Sn11  1  0.909  0.091  0.500  1.0
  Sn  Sn12  1  0.091  0.591  0.181  1.0
  Sn  Sn13  1  0.409  0.909  0.819  1.0
[/CIF]
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