The crystal structure described by (Na2Zr(SiO3)6)2O2 crystallizes in the monoclinic C2 space group. The structure consists of two water atoms inside a Na2Zr(SiO3)6 framework. In the Na2Zr(SiO3)6 framework, Na(1) is bonded to one O(1), one O(10), one O(3), one O(4), one O(6), one O(8), and one O(9) atom to form distorted NaO7 hexagonal pyramids that share  a cornercorner with one Zr(1)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,  an edgeedge with one Zr(1)O6 octahedra,  an edgeedge with one Si(1)O4 tetrahedra,  an edgeedge with one Si(2)O4 tetrahedra, and  an edgeedge with one Si(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 74°. Zr(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form ZrO6 octahedra that share corners with two equivalent Na(1)O7 hexagonal pyramids, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, corners with two equivalent Si(3)O4 tetrahedra, and edges with two equivalent Na(1)O7 hexagonal pyramids. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(10), one O(4), one O(7), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)O7 hexagonal pyramid,  a cornercorner with one Zr(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, and  an edgeedge with one Na(1)O7 hexagonal pyramid. The corner-sharing octahedral tilt angles are 32°. In the second Si site, Si(2) is bonded to one O(1), one O(10), one O(11), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)O7 hexagonal pyramid,  a cornercorner with one Zr(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, and  an edgeedge with one Na(1)O7 hexagonal pyramid. The corner-sharing octahedral tilt angles are 19°. In the third Si site, Si(3) is bonded to one O(3), one O(5), one O(6), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)O7 hexagonal pyramid,  a cornercorner with one Zr(1)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, and  an edgeedge with one Na(1)O7 hexagonal pyramid. The corner-sharing octahedral tilt angles are 29°. There are ten inequivalent O sites. In the first O site, O(10) is bonded in a 3-coordinate geometry to one Na(1), one Si(1), and one Si(2) atom. In the second O site, O(11) is bonded in a single-bond geometry to one Si(2) atom. In the third O site, O(1) is bonded in a 2-coordinate geometry to one Na(1), one Zr(1), and one Si(2) atom. In the fourth O site, O(3) is bonded in a 3-coordinate geometry to one Na(1), one Zr(1), and one Si(3) atom. In the fifth O site, O(4) is bonded in a 3-coordinate geometry to one Na(1), one Zr(1), and one Si(1) atom. In the sixth O site, O(5) is bonded in a bent 150 degrees geometry to two equivalent Si(3) atoms. In the seventh O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Na(1) and one Si(3) atom. In the eighth O site, O(7) is bonded in a linear geometry to two equivalent Si(1) atoms. In the ninth O site, O(8) is bonded in a distorted T-shaped geometry to one Na(1), one Si(2), and one Si(3) atom. In the tenth O site, O(9) is bonded in a bent 150 degrees geometry to one Na(1) and one Si(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2ZrSi6O19
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.572
_cell_length_b   7.572
_cell_length_c   7.504
_cell_angle_alpha   86.742
_cell_angle_beta   86.742
_cell_angle_gamma   88.273
_symmetry_Int_Tables_number   1
_cell_volume   428.683
_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  0.494  0.010  0.002  1.0
  Na  Na1  1  0.990  0.506  0.998  1.0
  Zr  Zr2  1  0.002  0.998  0.000  1.0
  Si  Si3  1  0.295  0.740  0.285  1.0
  Si  Si4  1  0.260  0.705  0.715  1.0
  Si  Si5  1  0.716  0.705  0.279  1.0
  Si  Si6  1  0.295  0.284  0.721  1.0
  Si  Si7  1  0.740  0.278  0.290  1.0
  Si  Si8  1  0.722  0.260  0.710  1.0
  O  O9  1  0.838  0.810  0.128  1.0
  O  O10  1  0.190  0.162  0.872  1.0
  O  O11  1  0.015  0.985  0.500  1.0
  O  O12  1  0.900  0.193  0.167  1.0
  O  O13  1  0.807  0.100  0.833  1.0
  O  O14  1  0.199  0.906  0.179  1.0
  O  O15  1  0.094  0.801  0.821  1.0
  O  O16  1  0.770  0.230  0.500  1.0
  O  O17  1  0.555  0.202  0.228  1.0
  O  O18  1  0.798  0.445  0.772  1.0
  O  O19  1  0.260  0.740  0.500  1.0
  O  O20  1  0.748  0.493  0.254  1.0
  O  O21  1  0.507  0.252  0.746  1.0
  O  O22  1  0.428  0.788  0.804  1.0
  O  O23  1  0.212  0.572  0.196  1.0
  O  O24  1  0.508  0.757  0.241  1.0
  O  O25  1  0.243  0.492  0.759  1.0
  O  O26  1  0.752  0.754  0.486  1.0
  O  O27  1  0.246  0.248  0.514  1.0
[/CIF]
.
The crystal structure described by (Na2Zr(SiO3)6)2O2 crystallizes in the monoclinic C2 space group. The structure consists of two water atoms inside a Na2Zr(SiO3)6 framework. In the Na2Zr(SiO3)6 framework, Na(1) is bonded to one O(1), one O(10), one O(3), one O(4), one O(6), one O(8), and one O(9) atom to form distorted NaO7 hexagonal pyramids that share  a cornercorner with one Zr(1)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,  an edgeedge with one Zr(1)O6 octahedra,  an edgeedge with one Si(1)O4 tetrahedra,  an edgeedge with one Si(2)O4 tetrahedra, and  an edgeedge with one Si(3)O4 tetrahedra. The corner-sharing octahedral tilt angles are 74°. Zr(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form ZrO6 octahedra that share corners with two equivalent Na(1)O7 hexagonal pyramids, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, corners with two equivalent Si(3)O4 tetrahedra, and edges with two equivalent Na(1)O7 hexagonal pyramids. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(10), one O(4), one O(7), and one O(9) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)O7 hexagonal pyramid,  a cornercorner with one Zr(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra, and  an edgeedge with one Na(1)O7 hexagonal pyramid. The corner-sharing octahedral tilt angles are 32°. In the second Si site, Si(2) is bonded to one O(1), one O(10), one O(11), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)O7 hexagonal pyramid,  a cornercorner with one Zr(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, and  an edgeedge with one Na(1)O7 hexagonal pyramid. The corner-sharing octahedral tilt angles are 19°. In the third Si site, Si(3) is bonded to one O(3), one O(5), one O(6), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(1)O7 hexagonal pyramid,  a cornercorner with one Zr(1)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra, and  an edgeedge with one Na(1)O7 hexagonal pyramid. The corner-sharing octahedral tilt angles are 29°. There are ten inequivalent O sites. In the first O site, O(10) is bonded in a 3-coordinate geometry to one Na(1), one Si(1), and one Si(2) atom. In the second O site, O(11) is bonded in a single-bond geometry to one Si(2) atom. In the third O site, O(1) is bonded in a 2-coordinate geometry to one Na(1), one Zr(1), and one Si(2) atom. In the fourth O site, O(3) is bonded in a 3-coordinate geometry to one Na(1), one Zr(1), and one Si(3) atom. In the fifth O site, O(4) is bonded in a 3-coordinate geometry to one Na(1), one Zr(1), and one Si(1) atom. In the sixth O site, O(5) is bonded in a bent 150 degrees geometry to two equivalent Si(3) atoms. In the seventh O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Na(1) and one Si(3) atom. In the eighth O site, O(7) is bonded in a linear geometry to two equivalent Si(1) atoms. In the ninth O site, O(8) is bonded in a distorted T-shaped geometry to one Na(1), one Si(2), and one Si(3) atom. In the tenth O site, O(9) is bonded in a bent 150 degrees geometry to one Na(1) and one Si(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2ZrSi6O19
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.572
_cell_length_b   7.572
_cell_length_c   7.504
_cell_angle_alpha   86.742
_cell_angle_beta   86.742
_cell_angle_gamma   88.273
_symmetry_Int_Tables_number   1
_cell_volume   428.683
_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  0.494  0.010  0.002  1.0
  Na  Na1  1  0.990  0.506  0.998  1.0
  Zr  Zr2  1  0.002  0.998  0.000  1.0
  Si  Si3  1  0.295  0.740  0.285  1.0
  Si  Si4  1  0.260  0.705  0.715  1.0
  Si  Si5  1  0.716  0.705  0.279  1.0
  Si  Si6  1  0.295  0.284  0.721  1.0
  Si  Si7  1  0.740  0.278  0.290  1.0
  Si  Si8  1  0.722  0.260  0.710  1.0
  O  O9  1  0.838  0.810  0.128  1.0
  O  O10  1  0.190  0.162  0.872  1.0
  O  O11  1  0.015  0.985  0.500  1.0
  O  O12  1  0.900  0.193  0.167  1.0
  O  O13  1  0.807  0.100  0.833  1.0
  O  O14  1  0.199  0.906  0.179  1.0
  O  O15  1  0.094  0.801  0.821  1.0
  O  O16  1  0.770  0.230  0.500  1.0
  O  O17  1  0.555  0.202  0.228  1.0
  O  O18  1  0.798  0.445  0.772  1.0
  O  O19  1  0.260  0.740  0.500  1.0
  O  O20  1  0.748  0.493  0.254  1.0
  O  O21  1  0.507  0.252  0.746  1.0
  O  O22  1  0.428  0.788  0.804  1.0
  O  O23  1  0.212  0.572  0.196  1.0
  O  O24  1  0.508  0.757  0.241  1.0
  O  O25  1  0.243  0.492  0.759  1.0
  O  O26  1  0.752  0.754  0.486  1.0
  O  O27  1  0.246  0.248  0.514  1.0
[/CIF]
.