The structure described by MgSb3O7 crystallizes in the orthorhombic Pnma space group. Mg(1) is bonded in a 7-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 5-coordinate geometry to one O(1), two equivalent O(2), and two equivalent O(4) atoms. In the second Sb site, Sb(2) is bonded in a distorted trigonal bipyramidal geometry to one O(3), two equivalent O(1), and two equivalent O(2) atoms. There are four inequivalent O sites. In the first O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Mg(1) and one Sb(2) atom. In the second O site, O(4) is bonded in a distorted trigonal planar geometry to one Mg(1) and two equivalent Sb(1) atoms. In the third O site, O(1) is bonded in a 3-coordinate geometry to one Mg(1), one Sb(1), and one Sb(2) atom. In the fourth O site, O(2) is bonded to one Mg(1), one Sb(2), and two equivalent Sb(1) atoms to form a mixture of distorted edge and corner-sharing OMgSb3 trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgSb3O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.453
_cell_length_b   10.530
_cell_length_c   10.561
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   606.382
_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
  Mg  Mg0  1  0.690  0.750  0.148  1.0
  Mg  Mg1  1  0.190  0.250  0.352  1.0
  Mg  Mg2  1  0.310  0.250  0.852  1.0
  Mg  Mg3  1  0.810  0.750  0.648  1.0
  Sb  Sb4  1  0.340  0.987  0.626  1.0
  Sb  Sb5  1  0.840  0.013  0.874  1.0
  Sb  Sb6  1  0.660  0.487  0.374  1.0
  Sb  Sb7  1  0.160  0.513  0.126  1.0
  Sb  Sb8  1  0.290  0.750  0.855  1.0
  Sb  Sb9  1  0.790  0.250  0.645  1.0
  Sb  Sb10  1  0.710  0.250  0.145  1.0
  Sb  Sb11  1  0.210  0.750  0.355  1.0
  Sb  Sb12  1  0.840  0.487  0.874  1.0
  Sb  Sb13  1  0.340  0.513  0.626  1.0
  Sb  Sb14  1  0.160  0.987  0.126  1.0
  Sb  Sb15  1  0.660  0.013  0.374  1.0
  O  O16  1  0.974  0.132  0.213  1.0
  O  O17  1  0.474  0.868  0.287  1.0
  O  O18  1  0.026  0.632  0.787  1.0
  O  O19  1  0.526  0.368  0.713  1.0
  O  O20  1  0.026  0.868  0.787  1.0
  O  O21  1  0.526  0.132  0.713  1.0
  O  O22  1  0.974  0.368  0.213  1.0
  O  O23  1  0.474  0.632  0.287  1.0
  O  O24  1  0.481  0.123  0.217  1.0
  O  O25  1  0.981  0.877  0.283  1.0
  O  O26  1  0.519  0.623  0.783  1.0
  O  O27  1  0.019  0.377  0.717  1.0
  O  O28  1  0.519  0.877  0.783  1.0
  O  O29  1  0.019  0.123  0.717  1.0
  O  O30  1  0.481  0.377  0.217  1.0
  O  O31  1  0.981  0.623  0.283  1.0
  O  O32  1  0.152  0.750  0.534  1.0
  O  O33  1  0.652  0.250  0.966  1.0
  O  O34  1  0.848  0.250  0.466  1.0
  O  O35  1  0.348  0.750  0.034  1.0
  O  O36  1  0.150  0.409  0.955  1.0
  O  O37  1  0.650  0.591  0.545  1.0
  O  O38  1  0.850  0.909  0.045  1.0
  O  O39  1  0.350  0.091  0.455  1.0
  O  O40  1  0.850  0.591  0.045  1.0
  O  O41  1  0.350  0.409  0.455  1.0
  O  O42  1  0.150  0.091  0.955  1.0
  O  O43  1  0.650  0.909  0.545  1.0
[/CIF]
.
The structure described by MgSb3O7 crystallizes in the orthorhombic Pnma space group. Mg(1) is bonded in a 7-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 5-coordinate geometry to one O(1), two equivalent O(2), and two equivalent O(4) atoms. In the second Sb site, Sb(2) is bonded in a distorted trigonal bipyramidal geometry to one O(3), two equivalent O(1), and two equivalent O(2) atoms. There are four inequivalent O sites. In the first O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Mg(1) and one Sb(2) atom. In the second O site, O(4) is bonded in a distorted trigonal planar geometry to one Mg(1) and two equivalent Sb(1) atoms. In the third O site, O(1) is bonded in a 3-coordinate geometry to one Mg(1), one Sb(1), and one Sb(2) atom. In the fourth O site, O(2) is bonded to one Mg(1), one Sb(2), and two equivalent Sb(1) atoms to form a mixture of distorted edge and corner-sharing OMgSb3 trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgSb3O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.453
_cell_length_b   10.530
_cell_length_c   10.561
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   606.382
_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
  Mg  Mg0  1  0.690  0.750  0.148  1.0
  Mg  Mg1  1  0.190  0.250  0.352  1.0
  Mg  Mg2  1  0.310  0.250  0.852  1.0
  Mg  Mg3  1  0.810  0.750  0.648  1.0
  Sb  Sb4  1  0.340  0.987  0.626  1.0
  Sb  Sb5  1  0.840  0.013  0.874  1.0
  Sb  Sb6  1  0.660  0.487  0.374  1.0
  Sb  Sb7  1  0.160  0.513  0.126  1.0
  Sb  Sb8  1  0.290  0.750  0.855  1.0
  Sb  Sb9  1  0.790  0.250  0.645  1.0
  Sb  Sb10  1  0.710  0.250  0.145  1.0
  Sb  Sb11  1  0.210  0.750  0.355  1.0
  Sb  Sb12  1  0.840  0.487  0.874  1.0
  Sb  Sb13  1  0.340  0.513  0.626  1.0
  Sb  Sb14  1  0.160  0.987  0.126  1.0
  Sb  Sb15  1  0.660  0.013  0.374  1.0
  O  O16  1  0.974  0.132  0.213  1.0
  O  O17  1  0.474  0.868  0.287  1.0
  O  O18  1  0.026  0.632  0.787  1.0
  O  O19  1  0.526  0.368  0.713  1.0
  O  O20  1  0.026  0.868  0.787  1.0
  O  O21  1  0.526  0.132  0.713  1.0
  O  O22  1  0.974  0.368  0.213  1.0
  O  O23  1  0.474  0.632  0.287  1.0
  O  O24  1  0.481  0.123  0.217  1.0
  O  O25  1  0.981  0.877  0.283  1.0
  O  O26  1  0.519  0.623  0.783  1.0
  O  O27  1  0.019  0.377  0.717  1.0
  O  O28  1  0.519  0.877  0.783  1.0
  O  O29  1  0.019  0.123  0.717  1.0
  O  O30  1  0.481  0.377  0.217  1.0
  O  O31  1  0.981  0.623  0.283  1.0
  O  O32  1  0.152  0.750  0.534  1.0
  O  O33  1  0.652  0.250  0.966  1.0
  O  O34  1  0.848  0.250  0.466  1.0
  O  O35  1  0.348  0.750  0.034  1.0
  O  O36  1  0.150  0.409  0.955  1.0
  O  O37  1  0.650  0.591  0.545  1.0
  O  O38  1  0.850  0.909  0.045  1.0
  O  O39  1  0.350  0.091  0.455  1.0
  O  O40  1  0.850  0.591  0.045  1.0
  O  O41  1  0.350  0.409  0.455  1.0
  O  O42  1  0.150  0.091  0.955  1.0
  O  O43  1  0.650  0.909  0.545  1.0
[/CIF]
.