The compound described by Na3CoBAsO7 crystallizes in the triclinic P-1 space group. There are six inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(11), one O(13), one O(3), one O(5), and two equivalent O(1) atoms. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(12), one O(14), one O(4), one O(6), and two equivalent O(2) atoms. In the third Na site, Na(3) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(4), one O(6), one O(7), and two equivalent O(11) atoms. In the fourth Na site, Na(4) is bonded in a 7-coordinate geometry to one O(2), one O(3), one O(5), one O(8), one O(9), and two equivalent O(12) atoms. In the fifth Na site, Na(5) is bonded in a 7-coordinate geometry to one O(1), one O(3), one O(5), one O(7), one O(9), and two equivalent O(13) atoms. In the sixth Na site, Na(6) is bonded in a 7-coordinate geometry to one O(10), one O(2), one O(4), one O(6), one O(8), and two equivalent O(14) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(10), one O(11), one O(14), one O(4), one O(6), and one O(8) atom to form CoO6 octahedra that share  a cornercorner with one As(1)O4 tetrahedra and corners with three equivalent As(2)O4 tetrahedra. In the second Co site, Co(2) is bonded to one O(12), one O(13), one O(3), one O(5), one O(7), and one O(9) atom to form CoO6 octahedra that share  a cornercorner with one As(2)O4 tetrahedra and corners with three equivalent As(1)O4 tetrahedra. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(3), and one O(5) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(2), one O(4), and one O(6) atom. There are two inequivalent As sites. In the first As site, As(1) is bonded to one O(11), one O(13), one O(7), and one O(9) atom to form AsO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra and corners with three equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-55°. In the second As site, As(2) is bonded to one O(10), one O(12), one O(14), and one O(8) atom to form AsO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra and corners with three equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-50°. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Na(3), one Na(5), two equivalent Na(1), and one B(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Na(4), one Na(6), two equivalent Na(2), and one B(2) atom. In the third O site, O(3) is bonded in a distorted trigonal bipyramidal geometry to one Na(1), one Na(4), one Na(5), one Co(2), and one B(1) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Na(2), one Na(3), one Na(6), one Co(1), and one B(2) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Na(1), one Na(4), one Na(5), one Co(2), and one B(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Na(2), one Na(3), one Na(6), one Co(1), and one B(2) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Na(3), one Na(5), one Co(2), and one As(1) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Na(4), one Na(6), one Co(1), and one As(2) atom. In the ninth O site, O(9) is bonded in a rectangular see-saw-like geometry to one Na(4), one Na(5), one Co(2), and one As(1) atom. In the tenth O site, O(10) is bonded in a distorted rectangular see-saw-like geometry to one Na(3), one Na(6), one Co(1), and one As(2) atom. In the eleventh O site, O(11) is bonded in a 5-coordinate geometry to one Na(1), two equivalent Na(3), one Co(1), and one As(1) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Na(2), two equivalent Na(4), one Co(2), and one As(2) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one Na(1), two equivalent Na(5), one Co(2), and one As(1) atom. In the fourteenth O site, O(14) is bonded in a 5-coordinate geometry to one Na(2), two equivalent Na(6), one Co(1), and one As(2) atom. is represented by the CIF file [CIF]
data_Na3CoBAsO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.256
_cell_length_b   6.928
_cell_length_c   9.051
_cell_angle_alpha   89.982
_cell_angle_beta   88.357
_cell_angle_gamma   89.969
_symmetry_Int_Tables_number   1
_cell_volume   329.416
_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
  As  As0  1  0.285  0.750  0.577  1.0
  As  As1  1  0.715  0.250  0.423  1.0
  B  B2  1  0.269  0.250  0.935  1.0
  B  B3  1  0.731  0.750  0.065  1.0
  Co  Co4  1  0.221  0.250  0.669  1.0
  Co  Co5  1  0.779  0.750  0.331  1.0
  Na  Na6  1  0.237  0.750  0.920  1.0
  Na  Na7  1  0.763  0.250  0.080  1.0
  Na  Na8  1  0.752  0.997  0.750  1.0
  Na  Na9  1  0.751  0.502  0.750  1.0
  Na  Na10  1  0.249  0.498  0.250  1.0
  Na  Na11  1  0.248  0.003  0.250  1.0
  O  O12  1  0.692  0.750  0.919  1.0
  O  O13  1  0.308  0.250  0.081  1.0
  O  O14  1  0.032  0.251  0.869  1.0
  O  O15  1  0.967  0.749  0.131  1.0
  O  O16  1  0.464  0.249  0.825  1.0
  O  O17  1  0.535  0.751  0.175  1.0
  O  O18  1  0.610  0.751  0.534  1.0
  O  O19  1  0.390  0.250  0.466  1.0
  O  O20  1  0.872  0.250  0.586  1.0
  O  O21  1  0.128  0.750  0.414  1.0
  O  O22  1  0.213  0.944  0.690  1.0
  O  O23  1  0.215  0.556  0.690  1.0
  O  O24  1  0.786  0.444  0.310  1.0
  O  O25  1  0.787  0.056  0.310  1.0
[/CIF]
.
The compound described by Na3CoBAsO7 crystallizes in the triclinic P-1 space group. There are six inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(11), one O(13), one O(3), one O(5), and two equivalent O(1) atoms. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(12), one O(14), one O(4), one O(6), and two equivalent O(2) atoms. In the third Na site, Na(3) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(4), one O(6), one O(7), and two equivalent O(11) atoms. In the fourth Na site, Na(4) is bonded in a 7-coordinate geometry to one O(2), one O(3), one O(5), one O(8), one O(9), and two equivalent O(12) atoms. In the fifth Na site, Na(5) is bonded in a 7-coordinate geometry to one O(1), one O(3), one O(5), one O(7), one O(9), and two equivalent O(13) atoms. In the sixth Na site, Na(6) is bonded in a 7-coordinate geometry to one O(10), one O(2), one O(4), one O(6), one O(8), and two equivalent O(14) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(10), one O(11), one O(14), one O(4), one O(6), and one O(8) atom to form CoO6 octahedra that share  a cornercorner with one As(1)O4 tetrahedra and corners with three equivalent As(2)O4 tetrahedra. In the second Co site, Co(2) is bonded to one O(12), one O(13), one O(3), one O(5), one O(7), and one O(9) atom to form CoO6 octahedra that share  a cornercorner with one As(2)O4 tetrahedra and corners with three equivalent As(1)O4 tetrahedra. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(3), and one O(5) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(2), one O(4), and one O(6) atom. There are two inequivalent As sites. In the first As site, As(1) is bonded to one O(11), one O(13), one O(7), and one O(9) atom to form AsO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra and corners with three equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-55°. In the second As site, As(2) is bonded to one O(10), one O(12), one O(14), and one O(8) atom to form AsO4 tetrahedra that share  a cornercorner with one Co(2)O6 octahedra and corners with three equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-50°. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Na(3), one Na(5), two equivalent Na(1), and one B(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Na(4), one Na(6), two equivalent Na(2), and one B(2) atom. In the third O site, O(3) is bonded in a distorted trigonal bipyramidal geometry to one Na(1), one Na(4), one Na(5), one Co(2), and one B(1) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Na(2), one Na(3), one Na(6), one Co(1), and one B(2) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Na(1), one Na(4), one Na(5), one Co(2), and one B(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Na(2), one Na(3), one Na(6), one Co(1), and one B(2) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Na(3), one Na(5), one Co(2), and one As(1) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Na(4), one Na(6), one Co(1), and one As(2) atom. In the ninth O site, O(9) is bonded in a rectangular see-saw-like geometry to one Na(4), one Na(5), one Co(2), and one As(1) atom. In the tenth O site, O(10) is bonded in a distorted rectangular see-saw-like geometry to one Na(3), one Na(6), one Co(1), and one As(2) atom. In the eleventh O site, O(11) is bonded in a 5-coordinate geometry to one Na(1), two equivalent Na(3), one Co(1), and one As(1) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Na(2), two equivalent Na(4), one Co(2), and one As(2) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one Na(1), two equivalent Na(5), one Co(2), and one As(1) atom. In the fourteenth O site, O(14) is bonded in a 5-coordinate geometry to one Na(2), two equivalent Na(6), one Co(1), and one As(2) atom. is represented by the CIF file [CIF]
data_Na3CoBAsO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.256
_cell_length_b   6.928
_cell_length_c   9.051
_cell_angle_alpha   89.982
_cell_angle_beta   88.357
_cell_angle_gamma   89.969
_symmetry_Int_Tables_number   1
_cell_volume   329.416
_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
  As  As0  1  0.285  0.750  0.577  1.0
  As  As1  1  0.715  0.250  0.423  1.0
  B  B2  1  0.269  0.250  0.935  1.0
  B  B3  1  0.731  0.750  0.065  1.0
  Co  Co4  1  0.221  0.250  0.669  1.0
  Co  Co5  1  0.779  0.750  0.331  1.0
  Na  Na6  1  0.237  0.750  0.920  1.0
  Na  Na7  1  0.763  0.250  0.080  1.0
  Na  Na8  1  0.752  0.997  0.750  1.0
  Na  Na9  1  0.751  0.502  0.750  1.0
  Na  Na10  1  0.249  0.498  0.250  1.0
  Na  Na11  1  0.248  0.003  0.250  1.0
  O  O12  1  0.692  0.750  0.919  1.0
  O  O13  1  0.308  0.250  0.081  1.0
  O  O14  1  0.032  0.251  0.869  1.0
  O  O15  1  0.967  0.749  0.131  1.0
  O  O16  1  0.464  0.249  0.825  1.0
  O  O17  1  0.535  0.751  0.175  1.0
  O  O18  1  0.610  0.751  0.534  1.0
  O  O19  1  0.390  0.250  0.466  1.0
  O  O20  1  0.872  0.250  0.586  1.0
  O  O21  1  0.128  0.750  0.414  1.0
  O  O22  1  0.213  0.944  0.690  1.0
  O  O23  1  0.215  0.556  0.690  1.0
  O  O24  1  0.786  0.444  0.310  1.0
  O  O25  1  0.787  0.056  0.310  1.0
[/CIF]
.