The structure described by TiNb2Zn(PbO3)4 crystallizes in the monoclinic Cm space group. Ti(1) is bonded to one O(1), one O(4), and four equivalent O(7) atoms to form TiO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Nb(2)O6 octahedra, and corners with four equivalent Ti(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-6°. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(1), one O(3), and four equivalent O(5) atoms to form NbO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Zn(1)O6 octahedra, and corners with four equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 5-10°. In the second Nb site, Nb(2) is bonded to one O(2), one O(4), and four equivalent O(8) atoms to form NbO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Zn(1)O6 octahedra, and corners with four equivalent Nb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-14°. Zn(1) is bonded to one O(2), one O(3), and four equivalent O(6) atoms to form ZnO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Nb(2)O6 octahedra, and corners with four equivalent Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 5-10°. There are four inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 3-coordinate geometry to one O(3) and two equivalent O(6) atoms. In the second Pb site, Pb(2) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(7), and two equivalent O(8) atoms. In the third Pb site, Pb(3) is bonded in a 4-coordinate geometry to four equivalent O(6) atoms. In the fourth Pb site, Pb(4) is bonded in a 3-coordinate geometry to one O(1) and two equivalent O(7) atoms. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Ti(1), one Nb(1), and one Pb(4) atom. In the second O site, O(2) is bonded in a linear geometry to one Nb(2) and one Zn(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Nb(1), one Zn(1), and one Pb(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Ti(1), one Nb(2), and one Pb(2) atom. In the fifth O site, O(5) is bonded in a linear geometry to two equivalent Nb(1) atoms. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to two equivalent Zn(1), one Pb(1), and two equivalent Pb(3) atoms. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to two equivalent Ti(1), one Pb(2), and one Pb(4) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to two equivalent Nb(2) and one Pb(2) atom. is represented by the CIF file [CIF]
data_TiNb2Zn(PbO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.055
_cell_length_b   4.055
_cell_length_c   16.765
_cell_angle_alpha   89.826
_cell_angle_beta   89.826
_cell_angle_gamma   89.521
_symmetry_Int_Tables_number   1
_cell_volume   275.633
_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
  Ti  Ti0  1  0.526  0.526  0.129  1.0
  Nb  Nb1  1  0.490  0.490  0.882  1.0
  Nb  Nb2  1  0.476  0.476  0.377  1.0
  Zn  Zn3  1  0.493  0.493  0.628  1.0
  Pb  Pb4  1  0.944  0.944  0.732  1.0
  Pb  Pb5  1  0.963  0.963  0.248  1.0
  Pb  Pb6  1  0.994  0.994  0.533  1.0
  Pb  Pb7  1  0.048  0.048  0.017  1.0
  O  O8  1  0.492  0.492  0.011  1.0
  O  O9  1  0.500  0.500  0.488  1.0
  O  O10  1  0.523  0.523  0.769  1.0
  O  O11  1  0.513  0.513  0.246  1.0
  O  O12  1  0.508  0.008  0.891  1.0
  O  O13  1  0.521  0.000  0.627  1.0
  O  O14  1  0.499  0.996  0.128  1.0
  O  O15  1  0.506  1.000  0.364  1.0
  O  O16  1  0.008  0.508  0.891  1.0
  O  O17  1  0.000  0.521  0.627  1.0
  O  O18  1  1.000  0.506  0.364  1.0
  O  O19  1  0.996  0.499  0.128  1.0
[/CIF]
.
The structure described by TiNb2Zn(PbO3)4 crystallizes in the monoclinic Cm space group. Ti(1) is bonded to one O(1), one O(4), and four equivalent O(7) atoms to form TiO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Nb(2)O6 octahedra, and corners with four equivalent Ti(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-6°. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded to one O(1), one O(3), and four equivalent O(5) atoms to form NbO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Zn(1)O6 octahedra, and corners with four equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 5-10°. In the second Nb site, Nb(2) is bonded to one O(2), one O(4), and four equivalent O(8) atoms to form NbO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Zn(1)O6 octahedra, and corners with four equivalent Nb(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 3-14°. Zn(1) is bonded to one O(2), one O(3), and four equivalent O(6) atoms to form ZnO6 octahedra that share  a cornercorner with one Nb(1)O6 octahedra,  a cornercorner with one Nb(2)O6 octahedra, and corners with four equivalent Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 5-10°. There are four inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 3-coordinate geometry to one O(3) and two equivalent O(6) atoms. In the second Pb site, Pb(2) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(7), and two equivalent O(8) atoms. In the third Pb site, Pb(3) is bonded in a 4-coordinate geometry to four equivalent O(6) atoms. In the fourth Pb site, Pb(4) is bonded in a 3-coordinate geometry to one O(1) and two equivalent O(7) atoms. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Ti(1), one Nb(1), and one Pb(4) atom. In the second O site, O(2) is bonded in a linear geometry to one Nb(2) and one Zn(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Nb(1), one Zn(1), and one Pb(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Ti(1), one Nb(2), and one Pb(2) atom. In the fifth O site, O(5) is bonded in a linear geometry to two equivalent Nb(1) atoms. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to two equivalent Zn(1), one Pb(1), and two equivalent Pb(3) atoms. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to two equivalent Ti(1), one Pb(2), and one Pb(4) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to two equivalent Nb(2) and one Pb(2) atom. is represented by the CIF file [CIF]
data_TiNb2Zn(PbO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.055
_cell_length_b   4.055
_cell_length_c   16.765
_cell_angle_alpha   89.826
_cell_angle_beta   89.826
_cell_angle_gamma   89.521
_symmetry_Int_Tables_number   1
_cell_volume   275.633
_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
  Ti  Ti0  1  0.526  0.526  0.129  1.0
  Nb  Nb1  1  0.490  0.490  0.882  1.0
  Nb  Nb2  1  0.476  0.476  0.377  1.0
  Zn  Zn3  1  0.493  0.493  0.628  1.0
  Pb  Pb4  1  0.944  0.944  0.732  1.0
  Pb  Pb5  1  0.963  0.963  0.248  1.0
  Pb  Pb6  1  0.994  0.994  0.533  1.0
  Pb  Pb7  1  0.048  0.048  0.017  1.0
  O  O8  1  0.492  0.492  0.011  1.0
  O  O9  1  0.500  0.500  0.488  1.0
  O  O10  1  0.523  0.523  0.769  1.0
  O  O11  1  0.513  0.513  0.246  1.0
  O  O12  1  0.508  0.008  0.891  1.0
  O  O13  1  0.521  0.000  0.627  1.0
  O  O14  1  0.499  0.996  0.128  1.0
  O  O15  1  0.506  1.000  0.364  1.0
  O  O16  1  0.008  0.508  0.891  1.0
  O  O17  1  0.000  0.521  0.627  1.0
  O  O18  1  1.000  0.506  0.364  1.0
  O  O19  1  0.996  0.499  0.128  1.0
[/CIF]
.