The compound described by Ho4MnSi7 crystallizes in the orthorhombic Amm2 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 Si(5), four equivalent Si(4), and four equivalent Si(7) atoms. In the second Ho site, Ho(2) is bonded in a 8-coordinate geometry to two equivalent Si(3), two equivalent Si(7), and four equivalent Si(1) atoms. In the third Ho site, Ho(3) is bonded in a 14-coordinate geometry to four equivalent Mn(1), two equivalent Si(2), two equivalent Si(4), two equivalent Si(6), and four equivalent Si(5) atoms. In the fourth Ho site, Ho(4) is bonded in a 10-coordinate geometry to two equivalent Si(1), two equivalent Si(2), two equivalent Si(6), and four equivalent Si(3) atoms. Mn(1) is bonded in a 5-coordinate geometry to four equivalent Ho(3), one Si(5), two equivalent Si(2), and two equivalent Si(6) atoms. There are seven inequivalent Si sites. In the first Si site, Si(1) is bonded in a 8-coordinate geometry to two equivalent Ho(4), four equivalent Ho(2), and two equivalent Si(3) atoms. In the second Si site, Si(2) is bonded in a 2-coordinate geometry to two equivalent Ho(3), two equivalent Ho(4), and two equivalent Mn(1) atoms. In the third Si site, Si(3) is bonded in a 8-coordinate geometry to two equivalent Ho(2), four equivalent Ho(4), and two equivalent Si(1) atoms. In the fourth Si site, Si(4) is bonded in a 9-coordinate geometry to two equivalent Ho(3), four equivalent Ho(1), one Si(7), and two equivalent Si(5) atoms. In the fifth Si site, Si(5) is bonded in a 9-coordinate geometry to two equivalent Ho(1), four equivalent Ho(3), one Mn(1), and two equivalent Si(4) atoms. In the sixth Si site, Si(6) is bonded in a 2-coordinate geometry to two equivalent Ho(3), two equivalent Ho(4), and two equivalent Mn(1) atoms. In the seventh Si site, Si(7) is bonded in a 7-coordinate geometry to two equivalent Ho(2), four equivalent Ho(1), and one Si(4) atom. is represented by the CIF card [CIF]
data_Ho4MnSi7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.110
_cell_length_b   3.919
_cell_length_c   14.572
_cell_angle_alpha   97.727
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   232.551
_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  0.500  0.914  0.828  1.0
  Ho  Ho1  1  0.000  0.793  0.587  1.0
  Ho  Ho2  1  0.500  0.526  0.051  1.0
  Ho  Ho3  1  0.000  0.186  0.371  1.0
  Mn  Mn4  1  0.000  0.077  0.153  1.0
  Si  Si5  1  0.500  0.265  0.529  1.0
  Si  Si6  1  0.000  0.612  0.223  1.0
  Si  Si7  1  0.500  0.713  0.426  1.0
  Si  Si8  1  0.000  0.450  0.899  1.0
  Si  Si9  1  0.000  0.996  0.991  1.0
  Si  Si10  1  0.500  0.107  0.215  1.0
  Si  Si11  1  0.000  0.370  0.740  1.0
[/CIF]
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The compound described by Ho4MnSi7 crystallizes in the orthorhombic Amm2 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 Si(5), four equivalent Si(4), and four equivalent Si(7) atoms. In the second Ho site, Ho(2) is bonded in a 8-coordinate geometry to two equivalent Si(3), two equivalent Si(7), and four equivalent Si(1) atoms. In the third Ho site, Ho(3) is bonded in a 14-coordinate geometry to four equivalent Mn(1), two equivalent Si(2), two equivalent Si(4), two equivalent Si(6), and four equivalent Si(5) atoms. In the fourth Ho site, Ho(4) is bonded in a 10-coordinate geometry to two equivalent Si(1), two equivalent Si(2), two equivalent Si(6), and four equivalent Si(3) atoms. Mn(1) is bonded in a 5-coordinate geometry to four equivalent Ho(3), one Si(5), two equivalent Si(2), and two equivalent Si(6) atoms. There are seven inequivalent Si sites. In the first Si site, Si(1) is bonded in a 8-coordinate geometry to two equivalent Ho(4), four equivalent Ho(2), and two equivalent Si(3) atoms. In the second Si site, Si(2) is bonded in a 2-coordinate geometry to two equivalent Ho(3), two equivalent Ho(4), and two equivalent Mn(1) atoms. In the third Si site, Si(3) is bonded in a 8-coordinate geometry to two equivalent Ho(2), four equivalent Ho(4), and two equivalent Si(1) atoms. In the fourth Si site, Si(4) is bonded in a 9-coordinate geometry to two equivalent Ho(3), four equivalent Ho(1), one Si(7), and two equivalent Si(5) atoms. In the fifth Si site, Si(5) is bonded in a 9-coordinate geometry to two equivalent Ho(1), four equivalent Ho(3), one Mn(1), and two equivalent Si(4) atoms. In the sixth Si site, Si(6) is bonded in a 2-coordinate geometry to two equivalent Ho(3), two equivalent Ho(4), and two equivalent Mn(1) atoms. In the seventh Si site, Si(7) is bonded in a 7-coordinate geometry to two equivalent Ho(2), four equivalent Ho(1), and one Si(4) atom. is represented by the CIF card [CIF]
data_Ho4MnSi7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.110
_cell_length_b   3.919
_cell_length_c   14.572
_cell_angle_alpha   97.727
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   232.551
_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  0.500  0.914  0.828  1.0
  Ho  Ho1  1  0.000  0.793  0.587  1.0
  Ho  Ho2  1  0.500  0.526  0.051  1.0
  Ho  Ho3  1  0.000  0.186  0.371  1.0
  Mn  Mn4  1  0.000  0.077  0.153  1.0
  Si  Si5  1  0.500  0.265  0.529  1.0
  Si  Si6  1  0.000  0.612  0.223  1.0
  Si  Si7  1  0.500  0.713  0.426  1.0
  Si  Si8  1  0.000  0.450  0.899  1.0
  Si  Si9  1  0.000  0.996  0.991  1.0
  Si  Si10  1  0.500  0.107  0.215  1.0
  Si  Si11  1  0.000  0.370  0.740  1.0
[/CIF]
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