The crystal structure described by Na3Ni(BO3)2 crystallizes in the monoclinic P2_1/c space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(3), one O(4), and one O(6) atom. In the second Na site, Na(2) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(5) atom to form distorted NaO5 trigonal bipyramids that share corners with two equivalent Na(3)O5 trigonal bipyramids,  an edgeedge with one Na(3)O5 trigonal bipyramid, and edges with two equivalent Ni(1)O5 trigonal bipyramids. In the third Na site, Na(3) is bonded to one O(2), one O(5), one O(6), and two equivalent O(3) atoms to form NaO5 trigonal bipyramids that share  a cornercorner with one Ni(1)O5 trigonal bipyramid, corners with two equivalent Na(2)O5 trigonal bipyramids,  an edgeedge with one Na(2)O5 trigonal bipyramid,  an edgeedge with one Na(3)O5 trigonal bipyramid, and  an edgeedge with one Ni(1)O5 trigonal bipyramid. Ni(1) is bonded to one O(1), one O(2), one O(4), one O(5), and one O(6) atom to form NiO5 trigonal bipyramids that share  a cornercorner with one Na(3)O5 trigonal bipyramid,  an edgeedge with one Na(3)O5 trigonal bipyramid, and edges with two equivalent Na(2)O5 trigonal bipyramids. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(2), one O(3), and one O(4) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(1), one O(5), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Ni(1), and one B(2) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), one Na(3), one Ni(1), and one B(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), two equivalent Na(3), and one B(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal pyramidal geometry to one Na(1), one Na(2), one Ni(1), and one B(1) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Na(2), one Na(3), one Ni(1), and one B(2) atom. In the sixth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(3), one Ni(1), and one B(2) atom. is represented by the CIF file [CIF]
data_Na3Ni(BO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.560
_cell_length_b   5.611
_cell_length_c   11.372
_cell_angle_alpha   65.444
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   554.818
_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  0.970  0.489  0.356  1.0
  Na  Na1  1  0.660  0.462  0.375  1.0
  Na  Na2  1  0.989  0.931  0.881  1.0
  Na  Na3  1  0.160  0.538  0.125  1.0
  Na  Na4  1  0.470  0.511  0.144  1.0
  Na  Na5  1  0.489  0.069  0.619  1.0
  Na  Na6  1  0.511  0.931  0.381  1.0
  Na  Na7  1  0.530  0.489  0.856  1.0
  Na  Na8  1  0.840  0.462  0.875  1.0
  Na  Na9  1  0.011  0.069  0.119  1.0
  Na  Na10  1  0.340  0.538  0.625  1.0
  Na  Na11  1  0.030  0.511  0.644  1.0
  Ni  Ni12  1  0.311  0.985  0.873  1.0
  Ni  Ni13  1  0.811  0.015  0.627  1.0
  Ni  Ni14  1  0.189  0.985  0.373  1.0
  Ni  Ni15  1  0.689  0.015  0.127  1.0
  B  B16  1  0.310  0.445  0.382  1.0
  B  B17  1  0.649  0.977  0.868  1.0
  B  B18  1  0.810  0.555  0.118  1.0
  B  B19  1  0.149  0.023  0.632  1.0
  B  B20  1  0.851  0.977  0.368  1.0
  B  B21  1  0.190  0.445  0.882  1.0
  B  B22  1  0.351  0.023  0.132  1.0
  B  B23  1  0.690  0.555  0.618  1.0
  O  O24  1  0.322  0.866  0.068  1.0
  O  O25  1  0.695  0.334  0.593  1.0
  O  O26  1  0.935  0.682  0.112  1.0
  O  O27  1  0.687  0.641  0.153  1.0
  O  O28  1  0.263  0.110  0.681  1.0
  O  O29  1  0.015  0.094  0.652  1.0
  O  O30  1  0.187  0.359  0.347  1.0
  O  O31  1  0.515  0.906  0.848  1.0
  O  O32  1  0.435  0.318  0.388  1.0
  O  O33  1  0.763  0.890  0.819  1.0
  O  O34  1  0.822  0.134  0.432  1.0
  O  O35  1  0.195  0.666  0.907  1.0
  O  O36  1  0.805  0.334  0.093  1.0
  O  O37  1  0.178  0.866  0.568  1.0
  O  O38  1  0.237  0.110  0.181  1.0
  O  O39  1  0.565  0.682  0.612  1.0
  O  O40  1  0.485  0.094  0.152  1.0
  O  O41  1  0.813  0.641  0.653  1.0
  O  O42  1  0.985  0.906  0.348  1.0
  O  O43  1  0.737  0.890  0.319  1.0
  O  O44  1  0.313  0.359  0.847  1.0
  O  O45  1  0.065  0.318  0.888  1.0
  O  O46  1  0.305  0.666  0.407  1.0
  O  O47  1  0.678  0.134  0.932  1.0
[/CIF]
.
The crystal structure described by Na3Ni(BO3)2 crystallizes in the monoclinic P2_1/c space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(3), one O(4), and one O(6) atom. In the second Na site, Na(2) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(5) atom to form distorted NaO5 trigonal bipyramids that share corners with two equivalent Na(3)O5 trigonal bipyramids,  an edgeedge with one Na(3)O5 trigonal bipyramid, and edges with two equivalent Ni(1)O5 trigonal bipyramids. In the third Na site, Na(3) is bonded to one O(2), one O(5), one O(6), and two equivalent O(3) atoms to form NaO5 trigonal bipyramids that share  a cornercorner with one Ni(1)O5 trigonal bipyramid, corners with two equivalent Na(2)O5 trigonal bipyramids,  an edgeedge with one Na(2)O5 trigonal bipyramid,  an edgeedge with one Na(3)O5 trigonal bipyramid, and  an edgeedge with one Ni(1)O5 trigonal bipyramid. Ni(1) is bonded to one O(1), one O(2), one O(4), one O(5), and one O(6) atom to form NiO5 trigonal bipyramids that share  a cornercorner with one Na(3)O5 trigonal bipyramid,  an edgeedge with one Na(3)O5 trigonal bipyramid, and edges with two equivalent Na(2)O5 trigonal bipyramids. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(2), one O(3), and one O(4) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(1), one O(5), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Ni(1), and one B(2) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), one Na(3), one Ni(1), and one B(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), two equivalent Na(3), and one B(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal pyramidal geometry to one Na(1), one Na(2), one Ni(1), and one B(1) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Na(2), one Na(3), one Ni(1), and one B(2) atom. In the sixth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(3), one Ni(1), and one B(2) atom. is represented by the CIF file [CIF]
data_Na3Ni(BO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.560
_cell_length_b   5.611
_cell_length_c   11.372
_cell_angle_alpha   65.444
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   554.818
_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  0.970  0.489  0.356  1.0
  Na  Na1  1  0.660  0.462  0.375  1.0
  Na  Na2  1  0.989  0.931  0.881  1.0
  Na  Na3  1  0.160  0.538  0.125  1.0
  Na  Na4  1  0.470  0.511  0.144  1.0
  Na  Na5  1  0.489  0.069  0.619  1.0
  Na  Na6  1  0.511  0.931  0.381  1.0
  Na  Na7  1  0.530  0.489  0.856  1.0
  Na  Na8  1  0.840  0.462  0.875  1.0
  Na  Na9  1  0.011  0.069  0.119  1.0
  Na  Na10  1  0.340  0.538  0.625  1.0
  Na  Na11  1  0.030  0.511  0.644  1.0
  Ni  Ni12  1  0.311  0.985  0.873  1.0
  Ni  Ni13  1  0.811  0.015  0.627  1.0
  Ni  Ni14  1  0.189  0.985  0.373  1.0
  Ni  Ni15  1  0.689  0.015  0.127  1.0
  B  B16  1  0.310  0.445  0.382  1.0
  B  B17  1  0.649  0.977  0.868  1.0
  B  B18  1  0.810  0.555  0.118  1.0
  B  B19  1  0.149  0.023  0.632  1.0
  B  B20  1  0.851  0.977  0.368  1.0
  B  B21  1  0.190  0.445  0.882  1.0
  B  B22  1  0.351  0.023  0.132  1.0
  B  B23  1  0.690  0.555  0.618  1.0
  O  O24  1  0.322  0.866  0.068  1.0
  O  O25  1  0.695  0.334  0.593  1.0
  O  O26  1  0.935  0.682  0.112  1.0
  O  O27  1  0.687  0.641  0.153  1.0
  O  O28  1  0.263  0.110  0.681  1.0
  O  O29  1  0.015  0.094  0.652  1.0
  O  O30  1  0.187  0.359  0.347  1.0
  O  O31  1  0.515  0.906  0.848  1.0
  O  O32  1  0.435  0.318  0.388  1.0
  O  O33  1  0.763  0.890  0.819  1.0
  O  O34  1  0.822  0.134  0.432  1.0
  O  O35  1  0.195  0.666  0.907  1.0
  O  O36  1  0.805  0.334  0.093  1.0
  O  O37  1  0.178  0.866  0.568  1.0
  O  O38  1  0.237  0.110  0.181  1.0
  O  O39  1  0.565  0.682  0.612  1.0
  O  O40  1  0.485  0.094  0.152  1.0
  O  O41  1  0.813  0.641  0.653  1.0
  O  O42  1  0.985  0.906  0.348  1.0
  O  O43  1  0.737  0.890  0.319  1.0
  O  O44  1  0.313  0.359  0.847  1.0
  O  O45  1  0.065  0.318  0.888  1.0
  O  O46  1  0.305  0.666  0.407  1.0
  O  O47  1  0.678  0.134  0.932  1.0
[/CIF]
.