The material structure described by Na4Eu2GeAs4 is Magnesium tetraboride-derived structured and crystallizes in the monoclinic Cc space group. There are four inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to two equivalent Eu(1), one Ge(1), one As(1), one As(2), one As(3), and two equivalent As(4) atoms. In the second Na site, Na(2) is bonded in a 4-coordinate geometry to one Eu(1), one As(1), one As(4), and two equivalent As(3) atoms. In the third Na site, Na(3) is bonded in a 4-coordinate geometry to one Eu(1), one As(1), one As(4), and two equivalent As(2) atoms. In the fourth Na site, Na(4) is bonded in a 4-coordinate geometry to two equivalent Eu(1), one As(1), one As(2), one As(3), and one As(4) atom. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 14-coordinate geometry to one Na(2), one Na(3), two equivalent Na(1), two equivalent Na(4), two equivalent Ge(1), one As(2), one As(3), two equivalent As(1), and two equivalent As(4) atoms. In the second Eu site, Eu(2) is bonded in a 3-coordinate geometry to one As(1), two equivalent As(2), and two equivalent As(3) atoms. Ge(1) is bonded in a 4-coordinate geometry to one Na(1), two equivalent Eu(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 8-coordinate geometry to one Na(2), one Na(3), one Na(4), two equivalent Na(1), two equivalent Eu(1), and one Ge(1) atom. In the second As site, As(1) is bonded in a 7-coordinate geometry to one Na(1), one Na(2), one Na(3), one Na(4), one Eu(2), two equivalent Eu(1), and one Ge(1) atom. In the third As site, As(2) is bonded in a 8-coordinate geometry to one Na(1), one Na(4), two equivalent Na(3), one Eu(1), two equivalent Eu(2), and one Ge(1) atom. In the fourth As site, As(3) is bonded in a 8-coordinate geometry to one Na(1), one Na(4), two equivalent Na(2), one Eu(1), two equivalent Eu(2), and one Ge(1) atom. is represented by the CIF card [CIF]
data_Na4Eu2GeAs4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.617
_cell_length_b   9.617
_cell_length_c   7.352
_cell_angle_alpha   89.668
_cell_angle_beta   89.668
_cell_angle_gamma   119.530
_symmetry_Int_Tables_number   1
_cell_volume   591.636
_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  0.477  0.953  0.380  1.0
  Na  Na1  1  0.953  0.477  0.880  1.0
  Na  Na2  1  0.857  0.712  0.199  1.0
  Na  Na3  1  0.289  0.141  0.205  1.0
  Na  Na4  1  0.853  0.142  0.203  1.0
  Na  Na5  1  0.141  0.289  0.705  1.0
  Na  Na6  1  0.712  0.857  0.699  1.0
  Na  Na7  1  0.142  0.853  0.703  1.0
  Eu  Eu8  1  0.046  0.524  0.380  1.0
  Eu  Eu9  1  0.479  0.526  0.380  1.0
  Eu  Eu10  1  0.524  0.046  0.880  1.0
  Eu  Eu11  1  0.526  0.479  0.880  1.0
  Ge  Ge12  1  0.665  0.330  0.502  1.0
  Ge  Ge13  1  0.330  0.665  0.002  1.0
  As  As14  1  0.665  0.336  0.157  1.0
  As  As15  1  0.336  0.665  0.657  1.0
  As  As16  1  0.194  0.382  0.108  1.0
  As  As17  1  0.618  0.808  0.101  1.0
  As  As18  1  0.193  0.810  0.104  1.0
  As  As19  1  0.808  0.618  0.601  1.0
  As  As20  1  0.382  0.194  0.608  1.0
  As  As21  1  0.810  0.193  0.604  1.0
[/CIF]
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The material structure described by Na4Eu2GeAs4 is Magnesium tetraboride-derived structured and crystallizes in the monoclinic Cc space group. There are four inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to two equivalent Eu(1), one Ge(1), one As(1), one As(2), one As(3), and two equivalent As(4) atoms. In the second Na site, Na(2) is bonded in a 4-coordinate geometry to one Eu(1), one As(1), one As(4), and two equivalent As(3) atoms. In the third Na site, Na(3) is bonded in a 4-coordinate geometry to one Eu(1), one As(1), one As(4), and two equivalent As(2) atoms. In the fourth Na site, Na(4) is bonded in a 4-coordinate geometry to two equivalent Eu(1), one As(1), one As(2), one As(3), and one As(4) atom. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 14-coordinate geometry to one Na(2), one Na(3), two equivalent Na(1), two equivalent Na(4), two equivalent Ge(1), one As(2), one As(3), two equivalent As(1), and two equivalent As(4) atoms. In the second Eu site, Eu(2) is bonded in a 3-coordinate geometry to one As(1), two equivalent As(2), and two equivalent As(3) atoms. Ge(1) is bonded in a 4-coordinate geometry to one Na(1), two equivalent Eu(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 8-coordinate geometry to one Na(2), one Na(3), one Na(4), two equivalent Na(1), two equivalent Eu(1), and one Ge(1) atom. In the second As site, As(1) is bonded in a 7-coordinate geometry to one Na(1), one Na(2), one Na(3), one Na(4), one Eu(2), two equivalent Eu(1), and one Ge(1) atom. In the third As site, As(2) is bonded in a 8-coordinate geometry to one Na(1), one Na(4), two equivalent Na(3), one Eu(1), two equivalent Eu(2), and one Ge(1) atom. In the fourth As site, As(3) is bonded in a 8-coordinate geometry to one Na(1), one Na(4), two equivalent Na(2), one Eu(1), two equivalent Eu(2), and one Ge(1) atom. is represented by the CIF card [CIF]
data_Na4Eu2GeAs4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.617
_cell_length_b   9.617
_cell_length_c   7.352
_cell_angle_alpha   89.668
_cell_angle_beta   89.668
_cell_angle_gamma   119.530
_symmetry_Int_Tables_number   1
_cell_volume   591.636
_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  0.477  0.953  0.380  1.0
  Na  Na1  1  0.953  0.477  0.880  1.0
  Na  Na2  1  0.857  0.712  0.199  1.0
  Na  Na3  1  0.289  0.141  0.205  1.0
  Na  Na4  1  0.853  0.142  0.203  1.0
  Na  Na5  1  0.141  0.289  0.705  1.0
  Na  Na6  1  0.712  0.857  0.699  1.0
  Na  Na7  1  0.142  0.853  0.703  1.0
  Eu  Eu8  1  0.046  0.524  0.380  1.0
  Eu  Eu9  1  0.479  0.526  0.380  1.0
  Eu  Eu10  1  0.524  0.046  0.880  1.0
  Eu  Eu11  1  0.526  0.479  0.880  1.0
  Ge  Ge12  1  0.665  0.330  0.502  1.0
  Ge  Ge13  1  0.330  0.665  0.002  1.0
  As  As14  1  0.665  0.336  0.157  1.0
  As  As15  1  0.336  0.665  0.657  1.0
  As  As16  1  0.194  0.382  0.108  1.0
  As  As17  1  0.618  0.808  0.101  1.0
  As  As18  1  0.193  0.810  0.104  1.0
  As  As19  1  0.808  0.618  0.601  1.0
  As  As20  1  0.382  0.194  0.608  1.0
  As  As21  1  0.810  0.193  0.604  1.0
[/CIF]
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