The compound described by Na7TiNb2Si4P2O25F(O2)2 is Esseneite-derived structured and crystallizes in the triclinic P1 space group. The structure consists of four water atoms inside a Na7TiNb2Si4P2O25F framework. In the Na7TiNb2Si4P2O25F framework, there are seven inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(14), one O(16), one O(5), one O(6), one O(8), and one F(1) atom to form NaO5F octahedra that share  a cornercorner with one Na(6)O7F hexagonal bipyramid,  a cornercorner with one Na(4)O8 hexagonal bipyramid,  a cornercorner with one Nb(2)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, edges with two equivalent Na(3)O5F octahedra, edges with two equivalent Na(2)O6 octahedra, and edges with two equivalent Ti(1)O5F octahedra. The corner-sharing octahedral tilt angles are 56°. In the second Na site, Na(2) is bonded to one O(11), one O(16), one O(3), one O(5), one O(6), and one O(8) atom to form NaO6 octahedra that share  a cornercorner with one Nb(2)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, edges with two equivalent Na(1)O5F octahedra, edges with two equivalent Na(3)O5F octahedra, and edges with two equivalent Ti(1)O5F octahedra. The corner-sharing octahedral tilt angles are 55°. In the third Na site, Na(3) is bonded to one O(11), one O(14), one O(16), one O(3), one O(8), and one F(1) atom to form NaO5F octahedra that share  a cornercorner with one Na(6)O7F hexagonal bipyramid,  a cornercorner with one Na(4)O8 hexagonal bipyramid,  a cornercorner with one Nb(2)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, edges with two equivalent Na(1)O5F octahedra, edges with two equivalent Na(2)O6 octahedra, and edges with two equivalent Ti(1)O5F octahedra. The corner-sharing octahedral tilt angles are 61°. In the fourth Na site, Na(4) is bonded to one O(1), one O(10), one O(12), one O(13), one O(14), one O(4), and two equivalent O(2) atoms to form distorted NaO8 hexagonal bipyramids that share corners with two equivalent Na(4)O8 hexagonal bipyramids,  a cornercorner with one Na(1)O5F octahedra,  a cornercorner with one Na(3)O5F octahedra,  a cornercorner with one Ti(1)O5F octahedra,  a cornercorner with one P(2)O4 tetrahedra, edges with two equivalent Si(1)O4 tetrahedra, and edges with two equivalent Si(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 44-69°. In the fifth Na site, Na(5) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(12), one O(17), one O(19), and one O(21) atom. In the sixth Na site, Na(6) is bonded to one O(15), one O(18), one O(23), one O(24), one O(7), two equivalent O(9), and one F(1) atom to form distorted NaO7F hexagonal bipyramids that share corners with two equivalent Na(6)O7F hexagonal bipyramids,  a cornercorner with one Na(1)O5F octahedra,  a cornercorner with one Na(3)O5F octahedra,  a cornercorner with one Ti(1)O5F octahedra,  a cornercorner with one Na(7)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra, edges with two equivalent Nb(2)O6 octahedra,  an edgeedge with one Na(7)O4 tetrahedra, edges with two equivalent Si(3)O4 tetrahedra, and edges with two equivalent Si(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 47-67°. In the seventh Na site, Na(7) is bonded to one O(20), one O(24), one O(25), and one O(9) atom to form NaO4 tetrahedra that share  a cornercorner with one Na(6)O7F hexagonal bipyramid,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and  an edgeedge with one Na(6)O7F hexagonal bipyramid. Ti(1) is bonded to one O(11), one O(14), one O(3), one O(5), one O(6), and one F(1) atom to form TiO5F octahedra that share  a cornercorner with one Na(6)O7F hexagonal bipyramid,  a cornercorner with one Na(4)O8 hexagonal bipyramid,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, edges with two equivalent Na(1)O5F octahedra, edges with two equivalent Na(3)O5F octahedra, and edges with two equivalent Na(2)O6 octahedra. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(12), one O(17), one O(4), and one O(8) atom. In the second Nb site, Nb(2) is bonded to one O(15), one O(16), one O(18), one O(22), one O(23), and one O(7) atom to form distorted NbO6 octahedra that share  a cornercorner with one Na(1)O5F octahedra,  a cornercorner with one Na(3)O5F octahedra,  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent Si(3)O4 tetrahedra, corners with two equivalent Si(4)O4 tetrahedra, and edges with two equivalent Na(6)O7F hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 55-61°. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(12), one O(2), and one O(3) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(3)O5F octahedra,  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Ti(1)O5F octahedra,  a cornercorner with one Si(2)O4 tetrahedra, and edges with two equivalent Na(4)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 58-63°. In the second Si site, Si(2) is bonded to one O(10), one O(2), one O(4), and one O(6) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)O5F octahedra,  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Ti(1)O5F octahedra,  a cornercorner with one Si(1)O4 tetrahedra, and edges with two equivalent Na(4)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 58-66°. In the third Si site, Si(3) is bonded to one O(11), one O(18), one O(23), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(3)O5F octahedra,  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Ti(1)O5F octahedra, corners with two equivalent Nb(2)O6 octahedra,  a cornercorner with one Na(7)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and edges with two equivalent Na(6)O7F hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 30-68°. In the fourth Si site, Si(4) is bonded to one O(15), one O(5), one O(7), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)O5F octahedra,  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Ti(1)O5F octahedra, corners with two equivalent Nb(2)O6 octahedra,  a cornercorner with one Na(7)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, and edges with two equivalent Na(6)O7F hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 34-64°. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(21), one O(22), one O(24), and one O(25) atom to form PO4 tetrahedra that share  a cornercorner with one Na(6)O7F hexagonal bipyramid,  a cornercorner with one Nb(2)O6 octahedra, and corners with two equivalent Na(7)O4 tetrahedra. The corner-sharing octahedral tilt angles are 51°. In the second P site, P(2) is bonded to one O(13), one O(17), one O(19), and one O(20) atom to form PO4 tetrahedra that share  a cornercorner with one Na(4)O8 hexagonal bipyramid and  a cornercorner with one Na(7)O4 tetrahedra. There are twenty-five inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Na(4), one Na(5), one Nb(1), and one Si(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to two equivalent Na(4), one Si(1), and one Si(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Na(2), one Na(3), one Ti(1), and one Si(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(4), one Nb(1), and one Si(2) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(2), one Ti(1), and one Si(4) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Ti(1), and one Si(2) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Na(6), one Nb(2), and one Si(4) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Na(3), and one Nb(1) atom. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one Na(7), two equivalent Na(6), one Si(3), and one Si(4) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Na(4), one Na(5), one Nb(1), and one Si(2) atom. In the eleventh O site, O(11) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), one Na(3), one Ti(1), and one Si(3) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Na(4), one Na(5), one Nb(1), and one Si(1) atom. In the thirteenth O site, O(13) is bonded in a distorted bent 120 degrees geometry to one Na(4) and one P(2) atom. In the fourteenth O site, O(14) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(3), one Na(4), and one Ti(1) atom. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one Na(6), one Nb(2), and one Si(4) atom. In the sixteenth O site, O(16) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Na(3), and one Nb(2) atom. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Na(5), one Nb(1), and one P(2) atom. In the eighteenth O site, O(18) is bonded in a 3-coordinate geometry to one Na(6), one Nb(2), and one Si(3) atom. In the nineteenth O site, O(19) is bonded in a bent 120 degrees geometry to one Na(5) and one P(2) atom. In the twentieth O site, O(20) is bonded in a water-like geometry to one Na(7) and one P(2) atom. In the twenty-first O site, O(21) is bonded in a distorted bent 120 degrees geometry to one Na(5) and one P(1) atom. In the twenty-second O site, O(22) is bonded in a distorted single-bond geometry to one Nb(2) and one P(1) atom. In the twenty-third O site, O(23) is bonded in a distorted bent 150 degrees geometry to one Na(6), one Nb(2), and one Si(3) atom. In the twenty-fourth O site, O(24) is bonded in a 3-coordinate geometry to one Na(6), one Na(7), and one P(1) atom. In the twenty-fifth O site, O(25) is bonded in a bent 120 degrees geometry to one Na(7) and one P(1) atom. F(1) is bonded in a rectangular see-saw-like geometry to one Na(1), one Na(3), one Na(6), and one Ti(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na7TiNb2Si4P2O29F
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.545
_cell_length_b   7.280
_cell_length_c   14.725
_cell_angle_alpha   92.132
_cell_angle_beta   95.521
_cell_angle_gamma   90.446
_symmetry_Int_Tables_number   1
_cell_volume   591.238
_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
  Na  Na0  1  0.376  0.124  0.442  1.0
  Na  Na1  1  0.874  0.385  0.442  1.0
  Na  Na2  1  0.382  0.652  0.440  1.0
  Na  Na3  1  0.169  0.871  0.197  1.0
  Na  Na4  1  0.691  0.380  0.078  1.0
  Na  Na5  1  0.576  0.888  0.675  1.0
  Na  Na6  1  0.042  0.865  0.837  1.0
  Ti  Ti7  1  0.901  0.887  0.432  1.0
  Nb  Nb8  1  0.178  0.376  0.229  1.0
  Nb  Nb9  1  0.570  0.395  0.652  1.0
  Si  Si10  1  0.691  0.663  0.247  1.0
  Si  Si11  1  0.678  0.089  0.254  1.0
  Si  Si12  1  0.067  0.684  0.626  1.0
  Si  Si13  1  0.058  0.106  0.634  1.0
  P  P14  1  0.566  0.625  0.877  1.0
  P  P15  1  0.184  0.150  0.003  1.0
  O  O16  1  0.926  0.575  0.202  1.0
  O  O17  1  0.671  0.876  0.209  1.0
  O  O18  1  0.714  0.675  0.358  1.0
  O  O19  1  0.414  0.172  0.217  1.0
  O  O20  1  0.033  0.092  0.523  1.0
  O  O21  1  0.712  0.087  0.364  1.0
  O  O22  1  0.312  0.208  0.674  1.0
  O  O23  1  0.200  0.394  0.351  1.0
  O  O24  1  0.075  0.895  0.676  1.0
  O  O25  1  0.895  0.197  0.211  1.0
  O  O26  1  0.033  0.691  0.516  1.0
  O  O27  1  0.442  0.556  0.203  1.0
  O  O28  1  0.110  0.967  0.044  1.0
  O  O29  1  0.133  0.887  0.363  1.0
  O  O30  1  0.820  0.194  0.677  1.0
  O  O31  1  0.547  0.378  0.530  1.0
  O  O32  1  0.123  0.319  0.064  1.0
  O  O33  1  0.328  0.598  0.661  1.0
  O  O34  1  0.466  0.149  0.998  1.0
  O  O35  1  0.052  0.154  0.904  1.0
  O  O36  1  0.699  0.609  0.976  1.0
  O  O37  1  0.624  0.448  0.819  1.0
  O  O38  1  0.840  0.582  0.667  1.0
  O  O39  1  0.637  0.796  0.830  1.0
  O  O40  1  0.285  0.628  0.886  1.0
  O  O41  1  0.117  0.619  0.011  1.0
  O  O42  1  0.052  0.384  0.815  1.0
  O  O43  1  0.633  0.156  0.870  1.0
  O  O44  1  0.711  0.897  0.044  1.0
  F  F45  1  0.597  0.887  0.517  1.0
[/CIF]
.
The compound described by Na7TiNb2Si4P2O25F(O2)2 is Esseneite-derived structured and crystallizes in the triclinic P1 space group. The structure consists of four water atoms inside a Na7TiNb2Si4P2O25F framework. In the Na7TiNb2Si4P2O25F framework, there are seven inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(14), one O(16), one O(5), one O(6), one O(8), and one F(1) atom to form NaO5F octahedra that share  a cornercorner with one Na(6)O7F hexagonal bipyramid,  a cornercorner with one Na(4)O8 hexagonal bipyramid,  a cornercorner with one Nb(2)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, edges with two equivalent Na(3)O5F octahedra, edges with two equivalent Na(2)O6 octahedra, and edges with two equivalent Ti(1)O5F octahedra. The corner-sharing octahedral tilt angles are 56°. In the second Na site, Na(2) is bonded to one O(11), one O(16), one O(3), one O(5), one O(6), and one O(8) atom to form NaO6 octahedra that share  a cornercorner with one Nb(2)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, edges with two equivalent Na(1)O5F octahedra, edges with two equivalent Na(3)O5F octahedra, and edges with two equivalent Ti(1)O5F octahedra. The corner-sharing octahedral tilt angles are 55°. In the third Na site, Na(3) is bonded to one O(11), one O(14), one O(16), one O(3), one O(8), and one F(1) atom to form NaO5F octahedra that share  a cornercorner with one Na(6)O7F hexagonal bipyramid,  a cornercorner with one Na(4)O8 hexagonal bipyramid,  a cornercorner with one Nb(2)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, edges with two equivalent Na(1)O5F octahedra, edges with two equivalent Na(2)O6 octahedra, and edges with two equivalent Ti(1)O5F octahedra. The corner-sharing octahedral tilt angles are 61°. In the fourth Na site, Na(4) is bonded to one O(1), one O(10), one O(12), one O(13), one O(14), one O(4), and two equivalent O(2) atoms to form distorted NaO8 hexagonal bipyramids that share corners with two equivalent Na(4)O8 hexagonal bipyramids,  a cornercorner with one Na(1)O5F octahedra,  a cornercorner with one Na(3)O5F octahedra,  a cornercorner with one Ti(1)O5F octahedra,  a cornercorner with one P(2)O4 tetrahedra, edges with two equivalent Si(1)O4 tetrahedra, and edges with two equivalent Si(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 44-69°. In the fifth Na site, Na(5) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(12), one O(17), one O(19), and one O(21) atom. In the sixth Na site, Na(6) is bonded to one O(15), one O(18), one O(23), one O(24), one O(7), two equivalent O(9), and one F(1) atom to form distorted NaO7F hexagonal bipyramids that share corners with two equivalent Na(6)O7F hexagonal bipyramids,  a cornercorner with one Na(1)O5F octahedra,  a cornercorner with one Na(3)O5F octahedra,  a cornercorner with one Ti(1)O5F octahedra,  a cornercorner with one Na(7)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra, edges with two equivalent Nb(2)O6 octahedra,  an edgeedge with one Na(7)O4 tetrahedra, edges with two equivalent Si(3)O4 tetrahedra, and edges with two equivalent Si(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 47-67°. In the seventh Na site, Na(7) is bonded to one O(20), one O(24), one O(25), and one O(9) atom to form NaO4 tetrahedra that share  a cornercorner with one Na(6)O7F hexagonal bipyramid,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and  an edgeedge with one Na(6)O7F hexagonal bipyramid. Ti(1) is bonded to one O(11), one O(14), one O(3), one O(5), one O(6), and one F(1) atom to form TiO5F octahedra that share  a cornercorner with one Na(6)O7F hexagonal bipyramid,  a cornercorner with one Na(4)O8 hexagonal bipyramid,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, edges with two equivalent Na(1)O5F octahedra, edges with two equivalent Na(3)O5F octahedra, and edges with two equivalent Na(2)O6 octahedra. There are two inequivalent Nb sites. In the first Nb site, Nb(1) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(12), one O(17), one O(4), and one O(8) atom. In the second Nb site, Nb(2) is bonded to one O(15), one O(16), one O(18), one O(22), one O(23), and one O(7) atom to form distorted NbO6 octahedra that share  a cornercorner with one Na(1)O5F octahedra,  a cornercorner with one Na(3)O5F octahedra,  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, corners with two equivalent Si(3)O4 tetrahedra, corners with two equivalent Si(4)O4 tetrahedra, and edges with two equivalent Na(6)O7F hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 55-61°. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(12), one O(2), and one O(3) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(3)O5F octahedra,  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Ti(1)O5F octahedra,  a cornercorner with one Si(2)O4 tetrahedra, and edges with two equivalent Na(4)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 58-63°. In the second Si site, Si(2) is bonded to one O(10), one O(2), one O(4), and one O(6) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)O5F octahedra,  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Ti(1)O5F octahedra,  a cornercorner with one Si(1)O4 tetrahedra, and edges with two equivalent Na(4)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 58-66°. In the third Si site, Si(3) is bonded to one O(11), one O(18), one O(23), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(3)O5F octahedra,  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Ti(1)O5F octahedra, corners with two equivalent Nb(2)O6 octahedra,  a cornercorner with one Na(7)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and edges with two equivalent Na(6)O7F hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 30-68°. In the fourth Si site, Si(4) is bonded to one O(15), one O(5), one O(7), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)O5F octahedra,  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Ti(1)O5F octahedra, corners with two equivalent Nb(2)O6 octahedra,  a cornercorner with one Na(7)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, and edges with two equivalent Na(6)O7F hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 34-64°. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(21), one O(22), one O(24), and one O(25) atom to form PO4 tetrahedra that share  a cornercorner with one Na(6)O7F hexagonal bipyramid,  a cornercorner with one Nb(2)O6 octahedra, and corners with two equivalent Na(7)O4 tetrahedra. The corner-sharing octahedral tilt angles are 51°. In the second P site, P(2) is bonded to one O(13), one O(17), one O(19), and one O(20) atom to form PO4 tetrahedra that share  a cornercorner with one Na(4)O8 hexagonal bipyramid and  a cornercorner with one Na(7)O4 tetrahedra. There are twenty-five inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Na(4), one Na(5), one Nb(1), and one Si(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to two equivalent Na(4), one Si(1), and one Si(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Na(2), one Na(3), one Ti(1), and one Si(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(4), one Nb(1), and one Si(2) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(2), one Ti(1), and one Si(4) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Ti(1), and one Si(2) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Na(6), one Nb(2), and one Si(4) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Na(3), and one Nb(1) atom. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one Na(7), two equivalent Na(6), one Si(3), and one Si(4) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Na(4), one Na(5), one Nb(1), and one Si(2) atom. In the eleventh O site, O(11) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), one Na(3), one Ti(1), and one Si(3) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Na(4), one Na(5), one Nb(1), and one Si(1) atom. In the thirteenth O site, O(13) is bonded in a distorted bent 120 degrees geometry to one Na(4) and one P(2) atom. In the fourteenth O site, O(14) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(3), one Na(4), and one Ti(1) atom. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one Na(6), one Nb(2), and one Si(4) atom. In the sixteenth O site, O(16) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Na(3), and one Nb(2) atom. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Na(5), one Nb(1), and one P(2) atom. In the eighteenth O site, O(18) is bonded in a 3-coordinate geometry to one Na(6), one Nb(2), and one Si(3) atom. In the nineteenth O site, O(19) is bonded in a bent 120 degrees geometry to one Na(5) and one P(2) atom. In the twentieth O site, O(20) is bonded in a water-like geometry to one Na(7) and one P(2) atom. In the twenty-first O site, O(21) is bonded in a distorted bent 120 degrees geometry to one Na(5) and one P(1) atom. In the twenty-second O site, O(22) is bonded in a distorted single-bond geometry to one Nb(2) and one P(1) atom. In the twenty-third O site, O(23) is bonded in a distorted bent 150 degrees geometry to one Na(6), one Nb(2), and one Si(3) atom. In the twenty-fourth O site, O(24) is bonded in a 3-coordinate geometry to one Na(6), one Na(7), and one P(1) atom. In the twenty-fifth O site, O(25) is bonded in a bent 120 degrees geometry to one Na(7) and one P(1) atom. F(1) is bonded in a rectangular see-saw-like geometry to one Na(1), one Na(3), one Na(6), and one Ti(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na7TiNb2Si4P2O29F
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.545
_cell_length_b   7.280
_cell_length_c   14.725
_cell_angle_alpha   92.132
_cell_angle_beta   95.521
_cell_angle_gamma   90.446
_symmetry_Int_Tables_number   1
_cell_volume   591.238
_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
  Na  Na0  1  0.376  0.124  0.442  1.0
  Na  Na1  1  0.874  0.385  0.442  1.0
  Na  Na2  1  0.382  0.652  0.440  1.0
  Na  Na3  1  0.169  0.871  0.197  1.0
  Na  Na4  1  0.691  0.380  0.078  1.0
  Na  Na5  1  0.576  0.888  0.675  1.0
  Na  Na6  1  0.042  0.865  0.837  1.0
  Ti  Ti7  1  0.901  0.887  0.432  1.0
  Nb  Nb8  1  0.178  0.376  0.229  1.0
  Nb  Nb9  1  0.570  0.395  0.652  1.0
  Si  Si10  1  0.691  0.663  0.247  1.0
  Si  Si11  1  0.678  0.089  0.254  1.0
  Si  Si12  1  0.067  0.684  0.626  1.0
  Si  Si13  1  0.058  0.106  0.634  1.0
  P  P14  1  0.566  0.625  0.877  1.0
  P  P15  1  0.184  0.150  0.003  1.0
  O  O16  1  0.926  0.575  0.202  1.0
  O  O17  1  0.671  0.876  0.209  1.0
  O  O18  1  0.714  0.675  0.358  1.0
  O  O19  1  0.414  0.172  0.217  1.0
  O  O20  1  0.033  0.092  0.523  1.0
  O  O21  1  0.712  0.087  0.364  1.0
  O  O22  1  0.312  0.208  0.674  1.0
  O  O23  1  0.200  0.394  0.351  1.0
  O  O24  1  0.075  0.895  0.676  1.0
  O  O25  1  0.895  0.197  0.211  1.0
  O  O26  1  0.033  0.691  0.516  1.0
  O  O27  1  0.442  0.556  0.203  1.0
  O  O28  1  0.110  0.967  0.044  1.0
  O  O29  1  0.133  0.887  0.363  1.0
  O  O30  1  0.820  0.194  0.677  1.0
  O  O31  1  0.547  0.378  0.530  1.0
  O  O32  1  0.123  0.319  0.064  1.0
  O  O33  1  0.328  0.598  0.661  1.0
  O  O34  1  0.466  0.149  0.998  1.0
  O  O35  1  0.052  0.154  0.904  1.0
  O  O36  1  0.699  0.609  0.976  1.0
  O  O37  1  0.624  0.448  0.819  1.0
  O  O38  1  0.840  0.582  0.667  1.0
  O  O39  1  0.637  0.796  0.830  1.0
  O  O40  1  0.285  0.628  0.886  1.0
  O  O41  1  0.117  0.619  0.011  1.0
  O  O42  1  0.052  0.384  0.815  1.0
  O  O43  1  0.633  0.156  0.870  1.0
  O  O44  1  0.711  0.897  0.044  1.0
  F  F45  1  0.597  0.887  0.517  1.0
[/CIF]
.