The crystal structure described by Na2EuCl5 crystallizes in the orthorhombic Pnma space group. Na(1) is bonded in a 8-coordinate geometry to two equivalent Cl(1), two equivalent Cl(2), two equivalent Cl(3), and two equivalent Cl(4) atoms. Eu(1) is bonded to one Cl(1), one Cl(2), one Cl(3), and four equivalent Cl(4) atoms to form distorted edge-sharing EuCl7 pentagonal bipyramids. There are four inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to four equivalent Na(1) and one Eu(1) atom to form ClNa4Eu square pyramids that share corners with four equivalent Cl(3)Na4Eu trigonal bipyramids, corners with eight equivalent Cl(4)Na2Eu2 trigonal pyramids, edges with two equivalent Cl(1)Na4Eu square pyramids,  an edgeedge with one Cl(3)Na4Eu trigonal bipyramid, edges with two equivalent Cl(4)Na2Eu2 trigonal pyramids, and  a faceface with one Cl(3)Na4Eu trigonal bipyramid. In the second Cl site, Cl(2) is bonded in a 5-coordinate geometry to four equivalent Na(1) and one Eu(1) atom. In the third Cl site, Cl(3) is bonded to four equivalent Na(1) and one Eu(1) atom to form ClNa4Eu trigonal bipyramids that share corners with four equivalent Cl(1)Na4Eu square pyramids, corners with four equivalent Cl(3)Na4Eu trigonal bipyramids, corners with four equivalent Cl(4)Na2Eu2 trigonal pyramids,  an edgeedge with one Cl(1)Na4Eu square pyramid, edges with four equivalent Cl(4)Na2Eu2 trigonal pyramids, and  a faceface with one Cl(1)Na4Eu square pyramid. In the fourth Cl site, Cl(4) is bonded to two equivalent Na(1) and two equivalent Eu(1) atoms to form distorted ClNa2Eu2 trigonal pyramids that share corners with four equivalent Cl(1)Na4Eu square pyramids, corners with two equivalent Cl(3)Na4Eu trigonal bipyramids, corners with six equivalent Cl(4)Na2Eu2 trigonal pyramids,  an edgeedge with one Cl(1)Na4Eu square pyramid, edges with two equivalent Cl(3)Na4Eu trigonal bipyramids, and  an edgeedge with one Cl(4)Na2Eu2 trigonal pyramid. is represented by the CIF card [CIF]
data_Na2EuCl5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.914
_cell_length_b   8.565
_cell_length_c   12.388
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   839.727
_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
  Na  Na0  1  0.034  0.002  0.827  1.0
  Na  Na1  1  0.466  0.498  0.327  1.0
  Na  Na2  1  0.466  0.002  0.327  1.0
  Na  Na3  1  0.534  0.502  0.673  1.0
  Na  Na4  1  0.034  0.498  0.827  1.0
  Na  Na5  1  0.534  0.998  0.673  1.0
  Na  Na6  1  0.966  0.998  0.173  1.0
  Na  Na7  1  0.966  0.502  0.173  1.0
  Eu  Eu8  1  0.421  0.750  0.007  1.0
  Eu  Eu9  1  0.079  0.750  0.507  1.0
  Eu  Eu10  1  0.579  0.250  0.993  1.0
  Eu  Eu11  1  0.921  0.250  0.493  1.0
  Cl  Cl12  1  0.055  0.750  0.006  1.0
  Cl  Cl13  1  0.141  0.250  0.316  1.0
  Cl  Cl14  1  0.359  0.250  0.816  1.0
  Cl  Cl15  1  0.820  0.250  0.714  1.0
  Cl  Cl16  1  0.166  0.454  0.589  1.0
  Cl  Cl17  1  0.666  0.954  0.911  1.0
  Cl  Cl18  1  0.445  0.750  0.506  1.0
  Cl  Cl19  1  0.859  0.750  0.684  1.0
  Cl  Cl20  1  0.320  0.750  0.786  1.0
  Cl  Cl21  1  0.666  0.546  0.911  1.0
  Cl  Cl22  1  0.334  0.454  0.089  1.0
  Cl  Cl23  1  0.680  0.250  0.214  1.0
  Cl  Cl24  1  0.180  0.750  0.286  1.0
  Cl  Cl25  1  0.334  0.046  0.089  1.0
  Cl  Cl26  1  0.945  0.250  0.994  1.0
  Cl  Cl27  1  0.166  0.046  0.589  1.0
  Cl  Cl28  1  0.641  0.750  0.184  1.0
  Cl  Cl29  1  0.834  0.546  0.411  1.0
  Cl  Cl30  1  0.834  0.954  0.411  1.0
  Cl  Cl31  1  0.555  0.250  0.494  1.0
[/CIF]
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The crystal structure described by Na2EuCl5 crystallizes in the orthorhombic Pnma space group. Na(1) is bonded in a 8-coordinate geometry to two equivalent Cl(1), two equivalent Cl(2), two equivalent Cl(3), and two equivalent Cl(4) atoms. Eu(1) is bonded to one Cl(1), one Cl(2), one Cl(3), and four equivalent Cl(4) atoms to form distorted edge-sharing EuCl7 pentagonal bipyramids. There are four inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to four equivalent Na(1) and one Eu(1) atom to form ClNa4Eu square pyramids that share corners with four equivalent Cl(3)Na4Eu trigonal bipyramids, corners with eight equivalent Cl(4)Na2Eu2 trigonal pyramids, edges with two equivalent Cl(1)Na4Eu square pyramids,  an edgeedge with one Cl(3)Na4Eu trigonal bipyramid, edges with two equivalent Cl(4)Na2Eu2 trigonal pyramids, and  a faceface with one Cl(3)Na4Eu trigonal bipyramid. In the second Cl site, Cl(2) is bonded in a 5-coordinate geometry to four equivalent Na(1) and one Eu(1) atom. In the third Cl site, Cl(3) is bonded to four equivalent Na(1) and one Eu(1) atom to form ClNa4Eu trigonal bipyramids that share corners with four equivalent Cl(1)Na4Eu square pyramids, corners with four equivalent Cl(3)Na4Eu trigonal bipyramids, corners with four equivalent Cl(4)Na2Eu2 trigonal pyramids,  an edgeedge with one Cl(1)Na4Eu square pyramid, edges with four equivalent Cl(4)Na2Eu2 trigonal pyramids, and  a faceface with one Cl(1)Na4Eu square pyramid. In the fourth Cl site, Cl(4) is bonded to two equivalent Na(1) and two equivalent Eu(1) atoms to form distorted ClNa2Eu2 trigonal pyramids that share corners with four equivalent Cl(1)Na4Eu square pyramids, corners with two equivalent Cl(3)Na4Eu trigonal bipyramids, corners with six equivalent Cl(4)Na2Eu2 trigonal pyramids,  an edgeedge with one Cl(1)Na4Eu square pyramid, edges with two equivalent Cl(3)Na4Eu trigonal bipyramids, and  an edgeedge with one Cl(4)Na2Eu2 trigonal pyramid. is represented by the CIF card [CIF]
data_Na2EuCl5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.914
_cell_length_b   8.565
_cell_length_c   12.388
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   839.727
_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
  Na  Na0  1  0.034  0.002  0.827  1.0
  Na  Na1  1  0.466  0.498  0.327  1.0
  Na  Na2  1  0.466  0.002  0.327  1.0
  Na  Na3  1  0.534  0.502  0.673  1.0
  Na  Na4  1  0.034  0.498  0.827  1.0
  Na  Na5  1  0.534  0.998  0.673  1.0
  Na  Na6  1  0.966  0.998  0.173  1.0
  Na  Na7  1  0.966  0.502  0.173  1.0
  Eu  Eu8  1  0.421  0.750  0.007  1.0
  Eu  Eu9  1  0.079  0.750  0.507  1.0
  Eu  Eu10  1  0.579  0.250  0.993  1.0
  Eu  Eu11  1  0.921  0.250  0.493  1.0
  Cl  Cl12  1  0.055  0.750  0.006  1.0
  Cl  Cl13  1  0.141  0.250  0.316  1.0
  Cl  Cl14  1  0.359  0.250  0.816  1.0
  Cl  Cl15  1  0.820  0.250  0.714  1.0
  Cl  Cl16  1  0.166  0.454  0.589  1.0
  Cl  Cl17  1  0.666  0.954  0.911  1.0
  Cl  Cl18  1  0.445  0.750  0.506  1.0
  Cl  Cl19  1  0.859  0.750  0.684  1.0
  Cl  Cl20  1  0.320  0.750  0.786  1.0
  Cl  Cl21  1  0.666  0.546  0.911  1.0
  Cl  Cl22  1  0.334  0.454  0.089  1.0
  Cl  Cl23  1  0.680  0.250  0.214  1.0
  Cl  Cl24  1  0.180  0.750  0.286  1.0
  Cl  Cl25  1  0.334  0.046  0.089  1.0
  Cl  Cl26  1  0.945  0.250  0.994  1.0
  Cl  Cl27  1  0.166  0.046  0.589  1.0
  Cl  Cl28  1  0.641  0.750  0.184  1.0
  Cl  Cl29  1  0.834  0.546  0.411  1.0
  Cl  Cl30  1  0.834  0.954  0.411  1.0
  Cl  Cl31  1  0.555  0.250  0.494  1.0
[/CIF]
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