The compound described by Ho4NiSn8 crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 10-coordinate geometry to two equivalent Sn(2), two equivalent Sn(5), two equivalent Sn(7), and four equivalent Sn(3) atoms. In the second Ho site, Ho(2) is bonded in a 10-coordinate geometry to two equivalent Sn(1), two equivalent Sn(6), two equivalent Sn(8), and four equivalent Sn(4) atoms. In the third Ho site, Ho(3) is bonded in a 14-coordinate geometry to four equivalent Ni(1), two equivalent Sn(4), two equivalent Sn(5), two equivalent Sn(7), and four equivalent Sn(1) atoms. In the fourth Ho site, Ho(4) is bonded in a 10-coordinate geometry to two equivalent Sn(3), two equivalent Sn(6), two equivalent Sn(8), and four equivalent Sn(2) atoms. Ni(1) is bonded in a 5-coordinate geometry to four equivalent Ho(3), one Sn(1), two equivalent Sn(5), and two equivalent Sn(7) atoms. There are eight inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to two equivalent Ho(2), four equivalent Ho(3), one Ni(1), and two equivalent Sn(4) atoms. In the second Sn site, Sn(2) is bonded in a 8-coordinate geometry to two equivalent Ho(1), four equivalent Ho(4), and two equivalent Sn(3) atoms. In the third Sn site, Sn(3) is bonded in a 8-coordinate geometry to two equivalent Ho(4), four equivalent Ho(1), and two equivalent Sn(2) atoms. In the fourth Sn site, Sn(4) is bonded in a 8-coordinate geometry to two equivalent Ho(3), four equivalent Ho(2), and two equivalent Sn(1) atoms. In the fifth Sn site, Sn(5) is bonded in a 10-coordinate geometry to two equivalent Ho(1), two equivalent Ho(3), two equivalent Ni(1), and four equivalent Sn(7) atoms. In the sixth Sn site, Sn(6) is bonded in a 8-coordinate geometry to two equivalent Ho(2), two equivalent Ho(4), and four equivalent Sn(8) atoms. In the seventh Sn site, Sn(7) is bonded in a 10-coordinate geometry to two equivalent Ho(1), two equivalent Ho(3), two equivalent Ni(1), and four equivalent Sn(5) atoms. In the eighth Sn site, Sn(8) is bonded in a 8-coordinate geometry to two equivalent Ho(2), two equivalent Ho(4), and four equivalent Sn(6) atoms. is represented by the CIF file [CIF]
data_Ho4NiSn8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.391
_cell_length_b   4.397
_cell_length_c   16.888
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   326.093
_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
  Ho  Ho0  1  0.250  0.000  0.097  1.0
  Ho  Ho1  1  0.250  0.500  0.603  1.0
  Ho  Ho2  1  0.750  0.500  0.398  1.0
  Ho  Ho3  1  0.750  0.000  0.900  1.0
  Ni  Ni4  1  0.250  0.000  0.310  1.0
  Sn  Sn5  1  0.250  0.000  0.457  1.0
  Sn  Sn6  1  0.250  0.500  0.935  1.0
  Sn  Sn7  1  0.750  0.500  0.058  1.0
  Sn  Sn8  1  0.750  0.000  0.575  1.0
  Sn  Sn9  1  0.250  0.500  0.236  1.0
  Sn  Sn10  1  0.250  0.000  0.747  1.0
  Sn  Sn11  1  0.750  0.000  0.236  1.0
  Sn  Sn12  1  0.750  0.500  0.755  1.0
[/CIF]
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The compound described by Ho4NiSn8 crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 10-coordinate geometry to two equivalent Sn(2), two equivalent Sn(5), two equivalent Sn(7), and four equivalent Sn(3) atoms. In the second Ho site, Ho(2) is bonded in a 10-coordinate geometry to two equivalent Sn(1), two equivalent Sn(6), two equivalent Sn(8), and four equivalent Sn(4) atoms. In the third Ho site, Ho(3) is bonded in a 14-coordinate geometry to four equivalent Ni(1), two equivalent Sn(4), two equivalent Sn(5), two equivalent Sn(7), and four equivalent Sn(1) atoms. In the fourth Ho site, Ho(4) is bonded in a 10-coordinate geometry to two equivalent Sn(3), two equivalent Sn(6), two equivalent Sn(8), and four equivalent Sn(2) atoms. Ni(1) is bonded in a 5-coordinate geometry to four equivalent Ho(3), one Sn(1), two equivalent Sn(5), and two equivalent Sn(7) atoms. There are eight inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to two equivalent Ho(2), four equivalent Ho(3), one Ni(1), and two equivalent Sn(4) atoms. In the second Sn site, Sn(2) is bonded in a 8-coordinate geometry to two equivalent Ho(1), four equivalent Ho(4), and two equivalent Sn(3) atoms. In the third Sn site, Sn(3) is bonded in a 8-coordinate geometry to two equivalent Ho(4), four equivalent Ho(1), and two equivalent Sn(2) atoms. In the fourth Sn site, Sn(4) is bonded in a 8-coordinate geometry to two equivalent Ho(3), four equivalent Ho(2), and two equivalent Sn(1) atoms. In the fifth Sn site, Sn(5) is bonded in a 10-coordinate geometry to two equivalent Ho(1), two equivalent Ho(3), two equivalent Ni(1), and four equivalent Sn(7) atoms. In the sixth Sn site, Sn(6) is bonded in a 8-coordinate geometry to two equivalent Ho(2), two equivalent Ho(4), and four equivalent Sn(8) atoms. In the seventh Sn site, Sn(7) is bonded in a 10-coordinate geometry to two equivalent Ho(1), two equivalent Ho(3), two equivalent Ni(1), and four equivalent Sn(5) atoms. In the eighth Sn site, Sn(8) is bonded in a 8-coordinate geometry to two equivalent Ho(2), two equivalent Ho(4), and four equivalent Sn(6) atoms. is represented by the CIF file [CIF]
data_Ho4NiSn8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.391
_cell_length_b   4.397
_cell_length_c   16.888
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   326.093
_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
  Ho  Ho0  1  0.250  0.000  0.097  1.0
  Ho  Ho1  1  0.250  0.500  0.603  1.0
  Ho  Ho2  1  0.750  0.500  0.398  1.0
  Ho  Ho3  1  0.750  0.000  0.900  1.0
  Ni  Ni4  1  0.250  0.000  0.310  1.0
  Sn  Sn5  1  0.250  0.000  0.457  1.0
  Sn  Sn6  1  0.250  0.500  0.935  1.0
  Sn  Sn7  1  0.750  0.500  0.058  1.0
  Sn  Sn8  1  0.750  0.000  0.575  1.0
  Sn  Sn9  1  0.250  0.500  0.236  1.0
  Sn  Sn10  1  0.250  0.000  0.747  1.0
  Sn  Sn11  1  0.750  0.000  0.236  1.0
  Sn  Sn12  1  0.750  0.500  0.755  1.0
[/CIF]
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