The compound described by Na3BSbAsO7 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(2), one O(3), two equivalent O(1), and two equivalent O(4) atoms. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. B(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. Sb(1) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(6), and two equivalent O(4) atoms. As(1) is bonded in a tetrahedral geometry to one O(5), one O(6), and two equivalent O(4) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to two equivalent Na(1), two equivalent Na(2), and one B(1) atom. In the second O site, O(2) is bonded to one Na(1), two equivalent Na(2), one B(1), and one Sb(1) atom to form distorted ONa3BSb trigonal bipyramids that share corners with two equivalent O(4)Na2SbAs trigonal pyramids,  an edgeedge with one O(3)Na3BSb trigonal bipyramid, edges with two equivalent O(4)Na2SbAs trigonal pyramids, and  a faceface with one O(3)Na3BSb trigonal bipyramid. In the third O site, O(3) is bonded to one Na(1), two equivalent Na(2), one B(1), and one Sb(1) atom to form distorted ONa3BSb trigonal bipyramids that share corners with six equivalent O(4)Na2SbAs trigonal pyramids,  an edgeedge with one O(2)Na3BSb trigonal bipyramid, and  a faceface with one O(2)Na3BSb trigonal bipyramid. In the fourth O site, O(4) is bonded to one Na(1), one Na(2), one Sb(1), and one As(1) atom to form distorted ONa2SbAs trigonal pyramids that share  a cornercorner with one O(2)Na3BSb trigonal bipyramid, corners with three equivalent O(3)Na3BSb trigonal bipyramids,  a cornercorner with one O(4)Na2SbAs trigonal pyramid,  an edgeedge with one O(2)Na3BSb trigonal bipyramid, and  an edgeedge with one O(4)Na2SbAs trigonal pyramid. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Na(2) and one As(1) atom. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to two equivalent Na(2), one Sb(1), and one As(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na3BSbAsO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.109
_cell_length_b   5.502
_cell_length_c   9.554
_cell_angle_alpha   86.820
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   373.080
_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  0.250  0.766  0.933  1.0
  Na  Na1  1  0.008  0.248  0.759  1.0
  Na  Na2  1  0.492  0.248  0.759  1.0
  Na  Na3  1  0.508  0.752  0.241  1.0
  Na  Na4  1  0.992  0.752  0.241  1.0
  Na  Na5  1  0.750  0.234  0.067  1.0
  B  B6  1  0.750  0.732  0.937  1.0
  B  B7  1  0.250  0.268  0.063  1.0
  Sb  Sb8  1  0.750  0.775  0.665  1.0
  Sb  Sb9  1  0.250  0.225  0.335  1.0
  As  As10  1  0.250  0.717  0.598  1.0
  As  As11  1  0.750  0.283  0.402  1.0
  O  O12  1  0.250  0.272  0.924  1.0
  O  O13  1  0.750  0.955  0.850  1.0
  O  O14  1  0.750  0.526  0.855  1.0
  O  O15  1  0.063  0.823  0.696  1.0
  O  O16  1  0.437  0.823  0.696  1.0
  O  O17  1  0.250  0.409  0.605  1.0
  O  O18  1  0.750  0.175  0.576  1.0
  O  O19  1  0.250  0.825  0.424  1.0
  O  O20  1  0.750  0.591  0.395  1.0
  O  O21  1  0.563  0.177  0.304  1.0
  O  O22  1  0.937  0.177  0.304  1.0
  O  O23  1  0.250  0.474  0.145  1.0
  O  O24  1  0.250  0.045  0.150  1.0
  O  O25  1  0.750  0.728  0.076  1.0
[/CIF]
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The compound described by Na3BSbAsO7 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(2), one O(3), two equivalent O(1), and two equivalent O(4) atoms. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. B(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. Sb(1) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(6), and two equivalent O(4) atoms. As(1) is bonded in a tetrahedral geometry to one O(5), one O(6), and two equivalent O(4) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to two equivalent Na(1), two equivalent Na(2), and one B(1) atom. In the second O site, O(2) is bonded to one Na(1), two equivalent Na(2), one B(1), and one Sb(1) atom to form distorted ONa3BSb trigonal bipyramids that share corners with two equivalent O(4)Na2SbAs trigonal pyramids,  an edgeedge with one O(3)Na3BSb trigonal bipyramid, edges with two equivalent O(4)Na2SbAs trigonal pyramids, and  a faceface with one O(3)Na3BSb trigonal bipyramid. In the third O site, O(3) is bonded to one Na(1), two equivalent Na(2), one B(1), and one Sb(1) atom to form distorted ONa3BSb trigonal bipyramids that share corners with six equivalent O(4)Na2SbAs trigonal pyramids,  an edgeedge with one O(2)Na3BSb trigonal bipyramid, and  a faceface with one O(2)Na3BSb trigonal bipyramid. In the fourth O site, O(4) is bonded to one Na(1), one Na(2), one Sb(1), and one As(1) atom to form distorted ONa2SbAs trigonal pyramids that share  a cornercorner with one O(2)Na3BSb trigonal bipyramid, corners with three equivalent O(3)Na3BSb trigonal bipyramids,  a cornercorner with one O(4)Na2SbAs trigonal pyramid,  an edgeedge with one O(2)Na3BSb trigonal bipyramid, and  an edgeedge with one O(4)Na2SbAs trigonal pyramid. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Na(2) and one As(1) atom. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to two equivalent Na(2), one Sb(1), and one As(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na3BSbAsO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.109
_cell_length_b   5.502
_cell_length_c   9.554
_cell_angle_alpha   86.820
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   373.080
_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  0.250  0.766  0.933  1.0
  Na  Na1  1  0.008  0.248  0.759  1.0
  Na  Na2  1  0.492  0.248  0.759  1.0
  Na  Na3  1  0.508  0.752  0.241  1.0
  Na  Na4  1  0.992  0.752  0.241  1.0
  Na  Na5  1  0.750  0.234  0.067  1.0
  B  B6  1  0.750  0.732  0.937  1.0
  B  B7  1  0.250  0.268  0.063  1.0
  Sb  Sb8  1  0.750  0.775  0.665  1.0
  Sb  Sb9  1  0.250  0.225  0.335  1.0
  As  As10  1  0.250  0.717  0.598  1.0
  As  As11  1  0.750  0.283  0.402  1.0
  O  O12  1  0.250  0.272  0.924  1.0
  O  O13  1  0.750  0.955  0.850  1.0
  O  O14  1  0.750  0.526  0.855  1.0
  O  O15  1  0.063  0.823  0.696  1.0
  O  O16  1  0.437  0.823  0.696  1.0
  O  O17  1  0.250  0.409  0.605  1.0
  O  O18  1  0.750  0.175  0.576  1.0
  O  O19  1  0.250  0.825  0.424  1.0
  O  O20  1  0.750  0.591  0.395  1.0
  O  O21  1  0.563  0.177  0.304  1.0
  O  O22  1  0.937  0.177  0.304  1.0
  O  O23  1  0.250  0.474  0.145  1.0
  O  O24  1  0.250  0.045  0.150  1.0
  O  O25  1  0.750  0.728  0.076  1.0
[/CIF]
.