The material structure described by Eu5Si3H crystallizes in the tetragonal I4/mcm space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 4-coordinate geometry to two equivalent Si(1) and four equivalent Si(2) atoms. In the second Eu site, Eu(2) is bonded in a distorted single-bond geometry to two equivalent Si(1), three equivalent Si(2), and one H(1) atom. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 10-coordinate geometry to two equivalent Eu(1) and eight equivalent Eu(2) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Eu(1), six equivalent Eu(2), and one Si(2) atom. H(1) is bonded in a tetrahedral geometry to four equivalent Eu(2) atoms. is represented by the CIF card [CIF]
data_Eu5Si3H
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.059
_cell_length_b   9.059
_cell_length_c   9.059
_cell_angle_alpha   129.476
_cell_angle_beta   129.476
_cell_angle_gamma   74.245
_symmetry_Int_Tables_number   1
_cell_volume   431.787
_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
  Eu  Eu0  1  0.500  0.500  0.000  1.0
  Eu  Eu1  1  0.000  0.000  0.000  1.0
  Eu  Eu2  1  0.523  0.023  0.844  1.0
  Eu  Eu3  1  0.179  0.679  0.156  1.0
  Eu  Eu4  1  0.023  0.179  0.500  1.0
  Eu  Eu5  1  0.679  0.523  0.500  1.0
  Eu  Eu6  1  0.477  0.977  0.156  1.0
  Eu  Eu7  1  0.821  0.321  0.844  1.0
  Eu  Eu8  1  0.977  0.821  0.500  1.0
  Eu  Eu9  1  0.321  0.477  0.500  1.0
  Si  Si10  1  0.250  0.250  0.000  1.0
  Si  Si11  1  0.750  0.750  0.000  1.0
  Si  Si12  1  0.890  0.390  0.280  1.0
  Si  Si13  1  0.110  0.610  0.720  1.0
  Si  Si14  1  0.390  0.110  0.500  1.0
  Si  Si15  1  0.610  0.890  0.500  1.0
  H  H16  1  0.250  0.750  0.500  1.0
  H  H17  1  0.750  0.250  0.500  1.0
[/CIF]
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The material structure described by Eu5Si3H crystallizes in the tetragonal I4/mcm space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 4-coordinate geometry to two equivalent Si(1) and four equivalent Si(2) atoms. In the second Eu site, Eu(2) is bonded in a distorted single-bond geometry to two equivalent Si(1), three equivalent Si(2), and one H(1) atom. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 10-coordinate geometry to two equivalent Eu(1) and eight equivalent Eu(2) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Eu(1), six equivalent Eu(2), and one Si(2) atom. H(1) is bonded in a tetrahedral geometry to four equivalent Eu(2) atoms. is represented by the CIF card [CIF]
data_Eu5Si3H
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.059
_cell_length_b   9.059
_cell_length_c   9.059
_cell_angle_alpha   129.476
_cell_angle_beta   129.476
_cell_angle_gamma   74.245
_symmetry_Int_Tables_number   1
_cell_volume   431.787
_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
  Eu  Eu0  1  0.500  0.500  0.000  1.0
  Eu  Eu1  1  0.000  0.000  0.000  1.0
  Eu  Eu2  1  0.523  0.023  0.844  1.0
  Eu  Eu3  1  0.179  0.679  0.156  1.0
  Eu  Eu4  1  0.023  0.179  0.500  1.0
  Eu  Eu5  1  0.679  0.523  0.500  1.0
  Eu  Eu6  1  0.477  0.977  0.156  1.0
  Eu  Eu7  1  0.821  0.321  0.844  1.0
  Eu  Eu8  1  0.977  0.821  0.500  1.0
  Eu  Eu9  1  0.321  0.477  0.500  1.0
  Si  Si10  1  0.250  0.250  0.000  1.0
  Si  Si11  1  0.750  0.750  0.000  1.0
  Si  Si12  1  0.890  0.390  0.280  1.0
  Si  Si13  1  0.110  0.610  0.720  1.0
  Si  Si14  1  0.390  0.110  0.500  1.0
  Si  Si15  1  0.610  0.890  0.500  1.0
  H  H16  1  0.250  0.750  0.500  1.0
  H  H17  1  0.750  0.250  0.500  1.0
[/CIF]
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