The structure described by MgEu2V2O8 crystallizes in the monoclinic C2 space group. Mg(1) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form distorted MgO4 trigonal pyramids that share corners with two equivalent V(1)O4 tetrahedra and  an edgeedge with one V(2)O4 tetrahedra. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. In the second Eu site, Eu(2) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. There are two inequivalent V sites. In the first V site, V(1) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form VO4 tetrahedra that share corners with two equivalent Mg(1)O4 trigonal pyramids. In the second V site, V(2) is bonded to two equivalent O(1) and two equivalent O(4) atoms to form VO4 tetrahedra that share  an edgeedge with one Mg(1)O4 trigonal pyramid. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to one Eu(1), one Eu(2), and one V(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Eu(1), one Eu(2), and one V(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Mg(1), one Eu(1), one Eu(2), and one V(1) atom. In the fourth O site, O(4) is bonded in a distorted see-saw-like geometry to one Mg(1), one Eu(1), one Eu(2), and one V(2) atom. is represented by the CIF file [CIF]
data_Eu2MgV2O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.254
_cell_length_b   6.254
_cell_length_c   6.492
_cell_angle_alpha   105.871
_cell_angle_beta   105.871
_cell_angle_gamma   116.998
_symmetry_Int_Tables_number   1
_cell_volume   192.794
_cell_formula_units_Z   1
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  0.155  0.845  0.250  1.0
  Eu  Eu1  1  0.876  0.124  0.750  1.0
  Mg  Mg2  1  0.864  0.136  0.250  1.0
  V  V3  1  0.377  0.623  0.750  1.0
  V  V4  1  0.606  0.394  0.250  1.0
  O  O5  1  0.787  0.747  0.411  1.0
  O  O6  1  0.374  0.799  0.587  1.0
  O  O7  1  0.725  0.803  0.955  1.0
  O  O8  1  0.802  0.353  0.093  1.0
  O  O9  1  0.647  0.198  0.407  1.0
  O  O10  1  0.197  0.275  0.545  1.0
  O  O11  1  0.201  0.626  0.913  1.0
  O  O12  1  0.253  0.213  0.089  1.0
[/CIF]
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The structure described by MgEu2V2O8 crystallizes in the monoclinic C2 space group. Mg(1) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form distorted MgO4 trigonal pyramids that share corners with two equivalent V(1)O4 tetrahedra and  an edgeedge with one V(2)O4 tetrahedra. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. In the second Eu site, Eu(2) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. There are two inequivalent V sites. In the first V site, V(1) is bonded to two equivalent O(2) and two equivalent O(3) atoms to form VO4 tetrahedra that share corners with two equivalent Mg(1)O4 trigonal pyramids. In the second V site, V(2) is bonded to two equivalent O(1) and two equivalent O(4) atoms to form VO4 tetrahedra that share  an edgeedge with one Mg(1)O4 trigonal pyramid. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to one Eu(1), one Eu(2), and one V(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Eu(1), one Eu(2), and one V(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Mg(1), one Eu(1), one Eu(2), and one V(1) atom. In the fourth O site, O(4) is bonded in a distorted see-saw-like geometry to one Mg(1), one Eu(1), one Eu(2), and one V(2) atom. is represented by the CIF file [CIF]
data_Eu2MgV2O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.254
_cell_length_b   6.254
_cell_length_c   6.492
_cell_angle_alpha   105.871
_cell_angle_beta   105.871
_cell_angle_gamma   116.998
_symmetry_Int_Tables_number   1
_cell_volume   192.794
_cell_formula_units_Z   1
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  0.155  0.845  0.250  1.0
  Eu  Eu1  1  0.876  0.124  0.750  1.0
  Mg  Mg2  1  0.864  0.136  0.250  1.0
  V  V3  1  0.377  0.623  0.750  1.0
  V  V4  1  0.606  0.394  0.250  1.0
  O  O5  1  0.787  0.747  0.411  1.0
  O  O6  1  0.374  0.799  0.587  1.0
  O  O7  1  0.725  0.803  0.955  1.0
  O  O8  1  0.802  0.353  0.093  1.0
  O  O9  1  0.647  0.198  0.407  1.0
  O  O10  1  0.197  0.275  0.545  1.0
  O  O11  1  0.201  0.626  0.913  1.0
  O  O12  1  0.253  0.213  0.089  1.0
[/CIF]
.