The compound described by MgNi2(SbO3)4 crystallizes in the monoclinic P2 space group. Mg(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(4) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form NiO6 octahedra that share corners with four equivalent Sb(3)O6 octahedra,  an edgeedge with one Sb(2)O6 octahedra, and  an edgeedge with one Sb(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-47°. In the second Ni site, Ni(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(6) atoms to form NiO6 octahedra that share corners with four equivalent Sb(2)O6 octahedra, corners with four equivalent Sb(4)O6 octahedra, and  an edgeedge with one Sb(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-52°. There are four inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms. In the second Sb site, Sb(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms to form SbO6 octahedra that share corners with four equivalent Ni(2)O6 octahedra, corners with four equivalent Sb(3)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra, and  an edgeedge with one Sb(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-48°. In the third Sb site, Sb(3) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form SbO6 octahedra that share corners with four equivalent Ni(1)O6 octahedra, corners with four equivalent Sb(2)O6 octahedra, and  an edgeedge with one Ni(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-48°. In the fourth Sb site, Sb(4) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(6) atoms to form SbO6 octahedra that share corners with four equivalent Ni(2)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra, and  an edgeedge with one Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-52°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Mg(1), one Ni(2), one Sb(1), and one Sb(4) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Ni(2), one Sb(2), and one Sb(3) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Ni(1), one Sb(2), and one Sb(3) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Mg(1), one Ni(1), one Sb(1), and one Sb(4) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Ni(1), one Sb(1), and one Sb(3) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Ni(2), one Sb(2), and one Sb(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgNi2(SbO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.029
_cell_length_b   4.897
_cell_length_c   9.661
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   91.145
_symmetry_Int_Tables_number   1
_cell_volume   237.862
_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
  Mg  Mg0  1  0.500  0.000  0.737  1.0
  Ni  Ni1  1  0.000  0.000  0.004  1.0
  Ni  Ni2  1  0.500  0.500  0.498  1.0
  Sb  Sb3  1  0.500  0.500  0.867  1.0
  Sb  Sb4  1  0.000  0.000  0.325  1.0
  Sb  Sb5  1  0.500  0.500  0.186  1.0
  Sb  Sb6  1  0.000  0.000  0.646  1.0
  O  O7  1  0.704  0.722  0.649  1.0
  O  O8  1  0.296  0.278  0.649  1.0
  O  O9  1  0.694  0.701  0.334  1.0
  O  O10  1  0.194  0.800  0.176  1.0
  O  O11  1  0.806  0.200  0.176  1.0
  O  O12  1  0.811  0.171  0.820  1.0
  O  O13  1  0.313  0.306  0.027  1.0
  O  O14  1  0.183  0.808  0.488  1.0
  O  O15  1  0.817  0.192  0.488  1.0
  O  O16  1  0.687  0.694  0.027  1.0
  O  O17  1  0.306  0.299  0.334  1.0
  O  O18  1  0.189  0.829  0.820  1.0
[/CIF]
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The compound described by MgNi2(SbO3)4 crystallizes in the monoclinic P2 space group. Mg(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(4) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form NiO6 octahedra that share corners with four equivalent Sb(3)O6 octahedra,  an edgeedge with one Sb(2)O6 octahedra, and  an edgeedge with one Sb(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-47°. In the second Ni site, Ni(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(6) atoms to form NiO6 octahedra that share corners with four equivalent Sb(2)O6 octahedra, corners with four equivalent Sb(4)O6 octahedra, and  an edgeedge with one Sb(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-52°. There are four inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms. In the second Sb site, Sb(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms to form SbO6 octahedra that share corners with four equivalent Ni(2)O6 octahedra, corners with four equivalent Sb(3)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra, and  an edgeedge with one Sb(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-48°. In the third Sb site, Sb(3) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms to form SbO6 octahedra that share corners with four equivalent Ni(1)O6 octahedra, corners with four equivalent Sb(2)O6 octahedra, and  an edgeedge with one Ni(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-48°. In the fourth Sb site, Sb(4) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(6) atoms to form SbO6 octahedra that share corners with four equivalent Ni(2)O6 octahedra,  an edgeedge with one Ni(1)O6 octahedra, and  an edgeedge with one Sb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-52°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Mg(1), one Ni(2), one Sb(1), and one Sb(4) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Ni(2), one Sb(2), and one Sb(3) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Ni(1), one Sb(2), and one Sb(3) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Mg(1), one Ni(1), one Sb(1), and one Sb(4) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Ni(1), one Sb(1), and one Sb(3) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Ni(2), one Sb(2), and one Sb(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgNi2(SbO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.029
_cell_length_b   4.897
_cell_length_c   9.661
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   91.145
_symmetry_Int_Tables_number   1
_cell_volume   237.862
_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
  Mg  Mg0  1  0.500  0.000  0.737  1.0
  Ni  Ni1  1  0.000  0.000  0.004  1.0
  Ni  Ni2  1  0.500  0.500  0.498  1.0
  Sb  Sb3  1  0.500  0.500  0.867  1.0
  Sb  Sb4  1  0.000  0.000  0.325  1.0
  Sb  Sb5  1  0.500  0.500  0.186  1.0
  Sb  Sb6  1  0.000  0.000  0.646  1.0
  O  O7  1  0.704  0.722  0.649  1.0
  O  O8  1  0.296  0.278  0.649  1.0
  O  O9  1  0.694  0.701  0.334  1.0
  O  O10  1  0.194  0.800  0.176  1.0
  O  O11  1  0.806  0.200  0.176  1.0
  O  O12  1  0.811  0.171  0.820  1.0
  O  O13  1  0.313  0.306  0.027  1.0
  O  O14  1  0.183  0.808  0.488  1.0
  O  O15  1  0.817  0.192  0.488  1.0
  O  O16  1  0.687  0.694  0.027  1.0
  O  O17  1  0.306  0.299  0.334  1.0
  O  O18  1  0.189  0.829  0.820  1.0
[/CIF]
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