The compound described by Eu2PdH4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 7-coordinate geometry to one H(2), two equivalent H(3), and four equivalent H(1) atoms. In the second Eu site, Eu(2) is bonded in a 9-coordinate geometry to two equivalent H(3), three equivalent H(2), and four equivalent H(1) atoms. Pd(1) is bonded in a tetrahedral geometry to one H(2), one H(3), and two equivalent H(1) atoms. There are three inequivalent H sites. In the first H site, H(1) is bonded in a 5-coordinate geometry to two equivalent Eu(1), two equivalent Eu(2), and one Pd(1) atom. In the second H site, H(2) is bonded to one Eu(1), three equivalent Eu(2), and one Pd(1) atom to form a mixture of edge and corner-sharing HEu4Pd trigonal bipyramids. In the third H site, H(3) is bonded to two equivalent Eu(1), two equivalent Eu(2), and one Pd(1) atom to form a mixture of distorted edge and corner-sharing HEu4Pd square pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Eu2H4Pd
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.402
_cell_length_b   7.476
_cell_length_c   9.526
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   384.713
_cell_formula_units_Z   4
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  0.250  0.151  0.592  1.0
  Eu  Eu1  1  0.250  0.651  0.908  1.0
  Eu  Eu2  1  0.750  0.849  0.408  1.0
  Eu  Eu3  1  0.750  0.349  0.092  1.0
  Eu  Eu4  1  0.250  0.489  0.331  1.0
  Eu  Eu5  1  0.250  0.989  0.169  1.0
  Eu  Eu6  1  0.750  0.511  0.669  1.0
  Eu  Eu7  1  0.750  0.011  0.831  1.0
  H  H8  1  0.522  0.327  0.839  1.0
  H  H9  1  0.978  0.827  0.661  1.0
  H  H10  1  0.022  0.673  0.161  1.0
  H  H11  1  0.478  0.173  0.339  1.0
  H  H12  1  0.478  0.673  0.161  1.0
  H  H13  1  0.022  0.173  0.339  1.0
  H  H14  1  0.978  0.327  0.839  1.0
  H  H15  1  0.522  0.827  0.661  1.0
  H  H16  1  0.250  0.002  0.898  1.0
  H  H17  1  0.250  0.502  0.602  1.0
  H  H18  1  0.750  0.998  0.102  1.0
  H  H19  1  0.750  0.498  0.398  1.0
  H  H20  1  0.250  0.323  0.095  1.0
  H  H21  1  0.250  0.823  0.405  1.0
  H  H22  1  0.750  0.677  0.905  1.0
  H  H23  1  0.750  0.177  0.595  1.0
  Pd  Pd24  1  0.250  0.240  0.916  1.0
  Pd  Pd25  1  0.250  0.740  0.584  1.0
  Pd  Pd26  1  0.750  0.760  0.084  1.0
  Pd  Pd27  1  0.750  0.260  0.416  1.0
[/CIF]
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The compound described by Eu2PdH4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 7-coordinate geometry to one H(2), two equivalent H(3), and four equivalent H(1) atoms. In the second Eu site, Eu(2) is bonded in a 9-coordinate geometry to two equivalent H(3), three equivalent H(2), and four equivalent H(1) atoms. Pd(1) is bonded in a tetrahedral geometry to one H(2), one H(3), and two equivalent H(1) atoms. There are three inequivalent H sites. In the first H site, H(1) is bonded in a 5-coordinate geometry to two equivalent Eu(1), two equivalent Eu(2), and one Pd(1) atom. In the second H site, H(2) is bonded to one Eu(1), three equivalent Eu(2), and one Pd(1) atom to form a mixture of edge and corner-sharing HEu4Pd trigonal bipyramids. In the third H site, H(3) is bonded to two equivalent Eu(1), two equivalent Eu(2), and one Pd(1) atom to form a mixture of distorted edge and corner-sharing HEu4Pd square pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Eu2H4Pd
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.402
_cell_length_b   7.476
_cell_length_c   9.526
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   384.713
_cell_formula_units_Z   4
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  0.250  0.151  0.592  1.0
  Eu  Eu1  1  0.250  0.651  0.908  1.0
  Eu  Eu2  1  0.750  0.849  0.408  1.0
  Eu  Eu3  1  0.750  0.349  0.092  1.0
  Eu  Eu4  1  0.250  0.489  0.331  1.0
  Eu  Eu5  1  0.250  0.989  0.169  1.0
  Eu  Eu6  1  0.750  0.511  0.669  1.0
  Eu  Eu7  1  0.750  0.011  0.831  1.0
  H  H8  1  0.522  0.327  0.839  1.0
  H  H9  1  0.978  0.827  0.661  1.0
  H  H10  1  0.022  0.673  0.161  1.0
  H  H11  1  0.478  0.173  0.339  1.0
  H  H12  1  0.478  0.673  0.161  1.0
  H  H13  1  0.022  0.173  0.339  1.0
  H  H14  1  0.978  0.327  0.839  1.0
  H  H15  1  0.522  0.827  0.661  1.0
  H  H16  1  0.250  0.002  0.898  1.0
  H  H17  1  0.250  0.502  0.602  1.0
  H  H18  1  0.750  0.998  0.102  1.0
  H  H19  1  0.750  0.498  0.398  1.0
  H  H20  1  0.250  0.323  0.095  1.0
  H  H21  1  0.250  0.823  0.405  1.0
  H  H22  1  0.750  0.677  0.905  1.0
  H  H23  1  0.750  0.177  0.595  1.0
  Pd  Pd24  1  0.250  0.240  0.916  1.0
  Pd  Pd25  1  0.250  0.740  0.584  1.0
  Pd  Pd26  1  0.750  0.760  0.084  1.0
  Pd  Pd27  1  0.750  0.260  0.416  1.0
[/CIF]
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