The compound described by Eu4BO7Cl crystallizes in the monoclinic P2_1/c space group. There are four inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(5), one O(6), one O(7), and one Cl(1) atom. In the second Eu site, Eu(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(5), two equivalent O(4), and one Cl(1) atom. In the third Eu site, Eu(3) is bonded in a 8-coordinate geometry to one O(2), one O(3), one O(4), one O(5), one O(7), two equivalent O(1), and one Cl(1) atom. In the fourth Eu site, Eu(4) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(4), one O(6), one O(7), and two equivalent Cl(1) atoms. B(1) is bonded in a trigonal planar geometry to one O(5), one O(6), and one O(7) atom. There are seven inequivalent O sites. In the first O site, O(3) is bonded to one Eu(1), one Eu(2), one Eu(3), and one Eu(4) atom to form OEu4 tetrahedra that share corners with two equivalent O(1)Eu4 tetrahedra, corners with two equivalent O(2)Eu4 tetrahedra, corners with two equivalent O(4)Eu4 tetrahedra,  a cornercorner with one Cl(1)Eu5 trigonal bipyramid,  an edgeedge with one O(1)Eu4 tetrahedra,  an edgeedge with one O(2)Eu4 tetrahedra,  an edgeedge with one O(4)Eu4 tetrahedra, and edges with two equivalent Cl(1)Eu5 trigonal bipyramids. In the second O site, O(4) is bonded to one Eu(3), one Eu(4), and two equivalent Eu(2) atoms to form OEu4 tetrahedra that share corners with two equivalent O(1)Eu4 tetrahedra, corners with two equivalent O(2)Eu4 tetrahedra, corners with two equivalent O(3)Eu4 tetrahedra, corners with five equivalent Cl(1)Eu5 trigonal bipyramids,  an edgeedge with one O(1)Eu4 tetrahedra,  an edgeedge with one O(2)Eu4 tetrahedra,  an edgeedge with one O(3)Eu4 tetrahedra, and  an edgeedge with one O(4)Eu4 tetrahedra. In the third O site, O(5) is bonded in a 4-coordinate geometry to one Eu(1), one Eu(2), one Eu(3), and one B(1) atom. In the fourth O site, O(6) is bonded in a distorted single-bond geometry to one Eu(1), one Eu(4), and one B(1) atom. In the fifth O site, O(7) is bonded in a distorted single-bond geometry to one Eu(1), one Eu(3), one Eu(4), and one B(1) atom. In the sixth O site, O(1) is bonded to one Eu(1), one Eu(2), and two equivalent Eu(3) atoms to form OEu4 tetrahedra that share corners with two equivalent O(2)Eu4 tetrahedra, corners with two equivalent O(3)Eu4 tetrahedra, corners with two equivalent O(4)Eu4 tetrahedra, corners with two equivalent Cl(1)Eu5 trigonal bipyramids,  an edgeedge with one O(1)Eu4 tetrahedra,  an edgeedge with one O(2)Eu4 tetrahedra,  an edgeedge with one O(3)Eu4 tetrahedra,  an edgeedge with one O(4)Eu4 tetrahedra, and  an edgeedge with one Cl(1)Eu5 trigonal bipyramid. In the seventh O site, O(2) is bonded to one Eu(1), one Eu(2), one Eu(3), and one Eu(4) atom to form OEu4 tetrahedra that share corners with two equivalent O(1)Eu4 tetrahedra, corners with two equivalent O(3)Eu4 tetrahedra, corners with two equivalent O(4)Eu4 tetrahedra, corners with three equivalent Cl(1)Eu5 trigonal bipyramids,  an edgeedge with one O(1)Eu4 tetrahedra,  an edgeedge with one O(3)Eu4 tetrahedra,  an edgeedge with one O(4)Eu4 tetrahedra, and  an edgeedge with one Cl(1)Eu5 trigonal bipyramid. Cl(1) is bonded to one Eu(1), one Eu(2), one Eu(3), and two equivalent Eu(4) atoms to form distorted ClEu5 trigonal bipyramids that share  a cornercorner with one O(3)Eu4 tetrahedra, corners with two equivalent O(1)Eu4 tetrahedra, corners with three equivalent O(2)Eu4 tetrahedra, corners with five equivalent O(4)Eu4 tetrahedra,  an edgeedge with one O(1)Eu4 tetrahedra,  an edgeedge with one O(2)Eu4 tetrahedra, edges with two equivalent O(3)Eu4 tetrahedra, and  an edgeedge with one Cl(1)Eu5 trigonal bipyramid. is represented by the CIF card [CIF]
data_Eu4BClO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.920
_cell_length_b   8.312
_cell_length_c   12.668
_cell_angle_alpha   90.000
_cell_angle_beta   121.551
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   800.465
_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  0.198  0.370  0.218  1.0
  Eu  Eu1  1  0.198  0.130  0.718  1.0
  Eu  Eu2  1  0.802  0.630  0.782  1.0
  Eu  Eu3  1  0.802  0.870  0.282  1.0
  Eu  Eu4  1  0.590  0.381  0.918  1.0
  Eu  Eu5  1  0.590  0.119  0.418  1.0
  Eu  Eu6  1  0.410  0.619  0.082  1.0
  Eu  Eu7  1  0.410  0.881  0.582  1.0
  Eu  Eu8  1  0.421  0.365  0.578  1.0
  Eu  Eu9  1  0.421  0.135  0.078  1.0
  Eu  Eu10  1  0.579  0.635  0.422  1.0
  Eu  Eu11  1  0.579  0.865  0.922  1.0
  Eu  Eu12  1  0.818  0.386  0.281  1.0
  Eu  Eu13  1  0.818  0.114  0.781  1.0
  Eu  Eu14  1  0.182  0.614  0.719  1.0
  Eu  Eu15  1  0.182  0.886  0.219  1.0
  B  B16  1  0.132  0.129  0.414  1.0
  B  B17  1  0.132  0.371  0.914  1.0
  B  B18  1  0.868  0.871  0.586  1.0
  B  B19  1  0.868  0.629  0.086  1.0
  Cl  Cl20  1  0.883  0.136  0.036  1.0
  Cl  Cl21  1  0.883  0.364  0.536  1.0
  Cl  Cl22  1  0.117  0.864  0.964  1.0
  Cl  Cl23  1  0.117  0.636  0.464  1.0
  O  O24  1  0.459  0.377  0.405  1.0
  O  O25  1  0.459  0.123  0.905  1.0
  O  O26  1  0.541  0.623  0.595  1.0
  O  O27  1  0.541  0.877  0.095  1.0
  O  O28  1  0.692  0.364  0.777  1.0
  O  O29  1  0.692  0.136  0.277  1.0
  O  O30  1  0.308  0.635  0.223  1.0
  O  O31  1  0.308  0.865  0.723  1.0
  O  O32  1  0.328  0.383  0.721  1.0
  O  O33  1  0.328  0.117  0.221  1.0
  O  O34  1  0.672  0.617  0.279  1.0
  O  O35  1  0.672  0.883  0.779  1.0
  O  O36  1  0.565  0.376  0.090  1.0
  O  O37  1  0.565  0.124  0.590  1.0
  O  O38  1  0.435  0.624  0.910  1.0
  O  O39  1  0.435  0.876  0.410  1.0
  O  O40  1  0.220  0.120  0.541  1.0
  O  O41  1  0.220  0.380  0.041  1.0
  O  O42  1  0.780  0.880  0.459  1.0
  O  O43  1  0.780  0.620  0.959  1.0
  O  O44  1  0.079  0.989  0.346  1.0
  O  O45  1  0.079  0.511  0.846  1.0
  O  O46  1  0.921  0.011  0.654  1.0
  O  O47  1  0.921  0.489  0.154  1.0
  O  O48  1  0.110  0.277  0.360  1.0
  O  O49  1  0.110  0.223  0.860  1.0
  O  O50  1  0.890  0.723  0.640  1.0
  O  O51  1  0.890  0.777  0.140  1.0
[/CIF]
.
The compound described by Eu4BO7Cl crystallizes in the monoclinic P2_1/c space group. There are four inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(5), one O(6), one O(7), and one Cl(1) atom. In the second Eu site, Eu(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(5), two equivalent O(4), and one Cl(1) atom. In the third Eu site, Eu(3) is bonded in a 8-coordinate geometry to one O(2), one O(3), one O(4), one O(5), one O(7), two equivalent O(1), and one Cl(1) atom. In the fourth Eu site, Eu(4) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(4), one O(6), one O(7), and two equivalent Cl(1) atoms. B(1) is bonded in a trigonal planar geometry to one O(5), one O(6), and one O(7) atom. There are seven inequivalent O sites. In the first O site, O(3) is bonded to one Eu(1), one Eu(2), one Eu(3), and one Eu(4) atom to form OEu4 tetrahedra that share corners with two equivalent O(1)Eu4 tetrahedra, corners with two equivalent O(2)Eu4 tetrahedra, corners with two equivalent O(4)Eu4 tetrahedra,  a cornercorner with one Cl(1)Eu5 trigonal bipyramid,  an edgeedge with one O(1)Eu4 tetrahedra,  an edgeedge with one O(2)Eu4 tetrahedra,  an edgeedge with one O(4)Eu4 tetrahedra, and edges with two equivalent Cl(1)Eu5 trigonal bipyramids. In the second O site, O(4) is bonded to one Eu(3), one Eu(4), and two equivalent Eu(2) atoms to form OEu4 tetrahedra that share corners with two equivalent O(1)Eu4 tetrahedra, corners with two equivalent O(2)Eu4 tetrahedra, corners with two equivalent O(3)Eu4 tetrahedra, corners with five equivalent Cl(1)Eu5 trigonal bipyramids,  an edgeedge with one O(1)Eu4 tetrahedra,  an edgeedge with one O(2)Eu4 tetrahedra,  an edgeedge with one O(3)Eu4 tetrahedra, and  an edgeedge with one O(4)Eu4 tetrahedra. In the third O site, O(5) is bonded in a 4-coordinate geometry to one Eu(1), one Eu(2), one Eu(3), and one B(1) atom. In the fourth O site, O(6) is bonded in a distorted single-bond geometry to one Eu(1), one Eu(4), and one B(1) atom. In the fifth O site, O(7) is bonded in a distorted single-bond geometry to one Eu(1), one Eu(3), one Eu(4), and one B(1) atom. In the sixth O site, O(1) is bonded to one Eu(1), one Eu(2), and two equivalent Eu(3) atoms to form OEu4 tetrahedra that share corners with two equivalent O(2)Eu4 tetrahedra, corners with two equivalent O(3)Eu4 tetrahedra, corners with two equivalent O(4)Eu4 tetrahedra, corners with two equivalent Cl(1)Eu5 trigonal bipyramids,  an edgeedge with one O(1)Eu4 tetrahedra,  an edgeedge with one O(2)Eu4 tetrahedra,  an edgeedge with one O(3)Eu4 tetrahedra,  an edgeedge with one O(4)Eu4 tetrahedra, and  an edgeedge with one Cl(1)Eu5 trigonal bipyramid. In the seventh O site, O(2) is bonded to one Eu(1), one Eu(2), one Eu(3), and one Eu(4) atom to form OEu4 tetrahedra that share corners with two equivalent O(1)Eu4 tetrahedra, corners with two equivalent O(3)Eu4 tetrahedra, corners with two equivalent O(4)Eu4 tetrahedra, corners with three equivalent Cl(1)Eu5 trigonal bipyramids,  an edgeedge with one O(1)Eu4 tetrahedra,  an edgeedge with one O(3)Eu4 tetrahedra,  an edgeedge with one O(4)Eu4 tetrahedra, and  an edgeedge with one Cl(1)Eu5 trigonal bipyramid. Cl(1) is bonded to one Eu(1), one Eu(2), one Eu(3), and two equivalent Eu(4) atoms to form distorted ClEu5 trigonal bipyramids that share  a cornercorner with one O(3)Eu4 tetrahedra, corners with two equivalent O(1)Eu4 tetrahedra, corners with three equivalent O(2)Eu4 tetrahedra, corners with five equivalent O(4)Eu4 tetrahedra,  an edgeedge with one O(1)Eu4 tetrahedra,  an edgeedge with one O(2)Eu4 tetrahedra, edges with two equivalent O(3)Eu4 tetrahedra, and  an edgeedge with one Cl(1)Eu5 trigonal bipyramid. is represented by the CIF card [CIF]
data_Eu4BClO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.920
_cell_length_b   8.312
_cell_length_c   12.668
_cell_angle_alpha   90.000
_cell_angle_beta   121.551
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   800.465
_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  0.198  0.370  0.218  1.0
  Eu  Eu1  1  0.198  0.130  0.718  1.0
  Eu  Eu2  1  0.802  0.630  0.782  1.0
  Eu  Eu3  1  0.802  0.870  0.282  1.0
  Eu  Eu4  1  0.590  0.381  0.918  1.0
  Eu  Eu5  1  0.590  0.119  0.418  1.0
  Eu  Eu6  1  0.410  0.619  0.082  1.0
  Eu  Eu7  1  0.410  0.881  0.582  1.0
  Eu  Eu8  1  0.421  0.365  0.578  1.0
  Eu  Eu9  1  0.421  0.135  0.078  1.0
  Eu  Eu10  1  0.579  0.635  0.422  1.0
  Eu  Eu11  1  0.579  0.865  0.922  1.0
  Eu  Eu12  1  0.818  0.386  0.281  1.0
  Eu  Eu13  1  0.818  0.114  0.781  1.0
  Eu  Eu14  1  0.182  0.614  0.719  1.0
  Eu  Eu15  1  0.182  0.886  0.219  1.0
  B  B16  1  0.132  0.129  0.414  1.0
  B  B17  1  0.132  0.371  0.914  1.0
  B  B18  1  0.868  0.871  0.586  1.0
  B  B19  1  0.868  0.629  0.086  1.0
  Cl  Cl20  1  0.883  0.136  0.036  1.0
  Cl  Cl21  1  0.883  0.364  0.536  1.0
  Cl  Cl22  1  0.117  0.864  0.964  1.0
  Cl  Cl23  1  0.117  0.636  0.464  1.0
  O  O24  1  0.459  0.377  0.405  1.0
  O  O25  1  0.459  0.123  0.905  1.0
  O  O26  1  0.541  0.623  0.595  1.0
  O  O27  1  0.541  0.877  0.095  1.0
  O  O28  1  0.692  0.364  0.777  1.0
  O  O29  1  0.692  0.136  0.277  1.0
  O  O30  1  0.308  0.635  0.223  1.0
  O  O31  1  0.308  0.865  0.723  1.0
  O  O32  1  0.328  0.383  0.721  1.0
  O  O33  1  0.328  0.117  0.221  1.0
  O  O34  1  0.672  0.617  0.279  1.0
  O  O35  1  0.672  0.883  0.779  1.0
  O  O36  1  0.565  0.376  0.090  1.0
  O  O37  1  0.565  0.124  0.590  1.0
  O  O38  1  0.435  0.624  0.910  1.0
  O  O39  1  0.435  0.876  0.410  1.0
  O  O40  1  0.220  0.120  0.541  1.0
  O  O41  1  0.220  0.380  0.041  1.0
  O  O42  1  0.780  0.880  0.459  1.0
  O  O43  1  0.780  0.620  0.959  1.0
  O  O44  1  0.079  0.989  0.346  1.0
  O  O45  1  0.079  0.511  0.846  1.0
  O  O46  1  0.921  0.011  0.654  1.0
  O  O47  1  0.921  0.489  0.154  1.0
  O  O48  1  0.110  0.277  0.360  1.0
  O  O49  1  0.110  0.223  0.860  1.0
  O  O50  1  0.890  0.723  0.640  1.0
  O  O51  1  0.890  0.777  0.140  1.0
[/CIF]
.