The structure described by Na5EuTaAs4 is alpha Pu-derived structured and crystallizes in the monoclinic Cc space group. There are five inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one Ta(1), one As(4), two equivalent As(2), and two equivalent As(3) atoms. In the second Na site, Na(2) is bonded in a 3-coordinate geometry to one As(2), one As(3), one As(4), and two equivalent As(1) atoms. In the third Na site, Na(3) is bonded in a 4-coordinate geometry to one As(1), one As(2), one As(3), and one As(4) atom. In the fourth Na site, Na(4) is bonded in a 4-coordinate geometry to one As(1), one As(4), and two equivalent As(3) atoms. In the fifth Na site, Na(5) is bonded in a 4-coordinate geometry to one As(1), one As(4), and two equivalent As(2) atoms. Eu(1) is bonded in a 5-coordinate geometry to one As(2), one As(3), one As(4), and two equivalent As(1) atoms. Ta(1) is bonded in a tetrahedral geometry to one Na(1), one As(1), one As(2), one As(3), and one As(4) atom. There are four inequivalent As sites. In the first As site, As(4) is bonded in a 7-coordinate geometry to one Na(1), one Na(2), one Na(3), one Na(4), one Na(5), one Eu(1), and one Ta(1) atom. In the second As site, As(1) is bonded in a 8-coordinate geometry to one Na(3), one Na(4), one Na(5), two equivalent Na(2), two equivalent Eu(1), and one Ta(1) atom. In the third As site, As(2) is bonded in a 8-coordinate geometry to one Na(2), one Na(3), two equivalent Na(1), two equivalent Na(5), one Eu(1), and one Ta(1) atom. In the fourth As site, As(3) is bonded in a 8-coordinate geometry to one Na(2), one Na(3), two equivalent Na(1), two equivalent Na(4), one Eu(1), and one Ta(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na5EuTaAs4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.601
_cell_length_b   9.601
_cell_length_c   7.493
_cell_angle_alpha   89.694
_cell_angle_beta   89.694
_cell_angle_gamma   120.266
_symmetry_Int_Tables_number   1
_cell_volume   596.517
_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
  Na  Na0  1  0.472  0.533  0.387  1.0
  Na  Na1  1  0.471  0.939  0.387  1.0
  Na  Na2  1  0.533  0.472  0.887  1.0
  Na  Na3  1  0.939  0.471  0.887  1.0
  Na  Na4  1  0.853  0.139  0.216  1.0
  Na  Na5  1  0.850  0.712  0.210  1.0
  Na  Na6  1  0.290  0.147  0.221  1.0
  Na  Na7  1  0.139  0.853  0.716  1.0
  Na  Na8  1  0.147  0.290  0.721  1.0
  Na  Na9  1  0.712  0.850  0.710  1.0
  Eu  Eu10  1  0.060  0.531  0.391  1.0
  Eu  Eu11  1  0.531  0.060  0.891  1.0
  Ta  Ta12  1  0.664  0.333  0.499  1.0
  Ta  Ta13  1  0.333  0.664  0.999  1.0
  As  As14  1  0.193  0.810  0.107  1.0
  As  As15  1  0.188  0.382  0.113  1.0
  As  As16  1  0.619  0.814  0.098  1.0
  As  As17  1  0.810  0.193  0.607  1.0
  As  As18  1  0.814  0.619  0.598  1.0
  As  As19  1  0.382  0.188  0.613  1.0
  As  As20  1  0.669  0.330  0.166  1.0
  As  As21  1  0.330  0.669  0.666  1.0
[/CIF]
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The structure described by Na5EuTaAs4 is alpha Pu-derived structured and crystallizes in the monoclinic Cc space group. There are five inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one Ta(1), one As(4), two equivalent As(2), and two equivalent As(3) atoms. In the second Na site, Na(2) is bonded in a 3-coordinate geometry to one As(2), one As(3), one As(4), and two equivalent As(1) atoms. In the third Na site, Na(3) is bonded in a 4-coordinate geometry to one As(1), one As(2), one As(3), and one As(4) atom. In the fourth Na site, Na(4) is bonded in a 4-coordinate geometry to one As(1), one As(4), and two equivalent As(3) atoms. In the fifth Na site, Na(5) is bonded in a 4-coordinate geometry to one As(1), one As(4), and two equivalent As(2) atoms. Eu(1) is bonded in a 5-coordinate geometry to one As(2), one As(3), one As(4), and two equivalent As(1) atoms. Ta(1) is bonded in a tetrahedral geometry to one Na(1), one As(1), one As(2), one As(3), and one As(4) atom. There are four inequivalent As sites. In the first As site, As(4) is bonded in a 7-coordinate geometry to one Na(1), one Na(2), one Na(3), one Na(4), one Na(5), one Eu(1), and one Ta(1) atom. In the second As site, As(1) is bonded in a 8-coordinate geometry to one Na(3), one Na(4), one Na(5), two equivalent Na(2), two equivalent Eu(1), and one Ta(1) atom. In the third As site, As(2) is bonded in a 8-coordinate geometry to one Na(2), one Na(3), two equivalent Na(1), two equivalent Na(5), one Eu(1), and one Ta(1) atom. In the fourth As site, As(3) is bonded in a 8-coordinate geometry to one Na(2), one Na(3), two equivalent Na(1), two equivalent Na(4), one Eu(1), and one Ta(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na5EuTaAs4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.601
_cell_length_b   9.601
_cell_length_c   7.493
_cell_angle_alpha   89.694
_cell_angle_beta   89.694
_cell_angle_gamma   120.266
_symmetry_Int_Tables_number   1
_cell_volume   596.517
_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
  Na  Na0  1  0.472  0.533  0.387  1.0
  Na  Na1  1  0.471  0.939  0.387  1.0
  Na  Na2  1  0.533  0.472  0.887  1.0
  Na  Na3  1  0.939  0.471  0.887  1.0
  Na  Na4  1  0.853  0.139  0.216  1.0
  Na  Na5  1  0.850  0.712  0.210  1.0
  Na  Na6  1  0.290  0.147  0.221  1.0
  Na  Na7  1  0.139  0.853  0.716  1.0
  Na  Na8  1  0.147  0.290  0.721  1.0
  Na  Na9  1  0.712  0.850  0.710  1.0
  Eu  Eu10  1  0.060  0.531  0.391  1.0
  Eu  Eu11  1  0.531  0.060  0.891  1.0
  Ta  Ta12  1  0.664  0.333  0.499  1.0
  Ta  Ta13  1  0.333  0.664  0.999  1.0
  As  As14  1  0.193  0.810  0.107  1.0
  As  As15  1  0.188  0.382  0.113  1.0
  As  As16  1  0.619  0.814  0.098  1.0
  As  As17  1  0.810  0.193  0.607  1.0
  As  As18  1  0.814  0.619  0.598  1.0
  As  As19  1  0.382  0.188  0.613  1.0
  As  As20  1  0.669  0.330  0.166  1.0
  As  As21  1  0.330  0.669  0.666  1.0
[/CIF]
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