The structure described by (Ca2Zr2Si12O35)2O2 crystallizes in the monoclinic C2 space group. The structure consists of two water atoms inside a Ca2Zr2Si12O35 framework. In the Ca2Zr2Si12O35 framework, Ca(1) is bonded to one O(12), one O(14), one O(15), one O(20), one O(5), one O(8), and one O(9) atom to form distorted CaO7 hexagonal pyramids that share  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, edges with two equivalent Zr(1)O6 octahedra,  an edgeedge with one Si(1)O4 tetrahedra, and  an edgeedge with one Si(2)O4 tetrahedra. Zr(1) is bonded to one O(14), one O(15), one O(17), one O(20), one O(4), and one O(5) atom to form ZrO6 octahedra that share  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,  a cornercorner with one Si(5)O4 tetrahedra,  a cornercorner with one Si(6)O4 tetrahedra, and edges with two equivalent Ca(1)O7 hexagonal pyramids. There are six inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(15), one O(16), one O(2), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Zr(1)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, and  an edgeedge with one Ca(1)O7 hexagonal pyramid. The corner-sharing octahedral tilt angles are 22°. In the second Si site, Si(2) is bonded to one O(10), one O(14), one O(6), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Zr(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(6)O4 tetrahedra, and  an edgeedge with one Ca(1)O7 hexagonal pyramid. The corner-sharing octahedral tilt angles are 22°. In the third Si site, Si(3) is bonded to one O(1), one O(19), one O(2), and one O(5) atom to form SiO4 tetrahedra that share  a cornercorner with one Ca(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(4)O4 tetrahedra, and  a cornercorner with one Si(6)O4 tetrahedra. The corner-sharing octahedral tilt angles are 48°. In the fourth Si site, Si(4) is bonded to one O(1), one O(10), one O(20), and one O(3) atom to form SiO4 tetrahedra that share  a cornercorner with one Ca(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  a cornercorner with one Si(5)O4 tetrahedra. The corner-sharing octahedral tilt angles are 49°. In the fifth Si site, Si(5) is bonded to one O(16), one O(17), one O(18), and one O(3) atom to form SiO4 tetrahedra that share  a cornercorner with one Zr(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  a cornercorner with one Si(5)O4 tetrahedra. The corner-sharing octahedral tilt angles are 17°. In the sixth Si site, Si(6) is bonded to one O(11), one O(19), one O(4), and one O(6) atom to form SiO4 tetrahedra that share  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  a cornercorner with one Si(6)O4 tetrahedra. The corner-sharing octahedral tilt angles are 19°. There are nineteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Si(3) and one Si(4) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(3) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Si(4) and one Si(5) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Zr(1) and one Si(6) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Ca(1), one Zr(1), and one Si(3) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Si(2) and one Si(6) atom. In the seventh O site, O(8) is bonded in a 2-coordinate geometry to one Ca(1), one Si(1), and one Si(2) atom. In the eighth O site, O(9) is bonded in a single-bond geometry to one Ca(1) atom. In the ninth O site, O(10) is bonded in a bent 150 degrees geometry to one Si(2) and one Si(4) atom. In the tenth O site, O(11) is bonded in a bent 150 degrees geometry to two equivalent Si(6) atoms. In the eleventh O site, O(12) is bonded in a bent 120 degrees geometry to one Ca(1) and one O(13) atom. In the twelfth O site, O(13) is bonded in a bent 120 degrees geometry to two equivalent O(12) atoms. In the thirteenth O site, O(14) is bonded in a 3-coordinate geometry to one Ca(1), one Zr(1), and one Si(2) atom. In the fourteenth O site, O(15) is bonded in a 3-coordinate geometry to one Ca(1), one Zr(1), and one Si(1) atom. In the fifteenth O site, O(16) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(5) atom. In the sixteenth O site, O(17) is bonded in a linear geometry to one Zr(1) and one Si(5) atom. In the seventeenth O site, O(18) is bonded in a bent 150 degrees geometry to two equivalent Si(5) atoms. In the eighteenth O site, O(19) is bonded in a bent 150 degrees geometry to one Si(3) and one Si(6) atom. In the nineteenth O site, O(20) is bonded in a distorted trigonal planar geometry to one Ca(1), one Zr(1), and one Si(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_CaZr(SiO3)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.064
_cell_length_b   10.064
_cell_length_c   7.918
_cell_angle_alpha   76.807
_cell_angle_beta   76.807
_cell_angle_gamma   90.398
_symmetry_Int_Tables_number   1
_cell_volume   758.677
_cell_formula_units_Z   2
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
  Ca  Ca0  1  0.488  0.037  0.529  1.0
  Ca  Ca1  1  0.963  0.512  0.471  1.0
  Zr  Zr2  1  0.726  0.772  0.502  1.0
  Zr  Zr3  1  0.228  0.274  0.498  1.0
  Si  Si4  1  0.797  0.574  0.158  1.0
  Si  Si5  1  0.426  0.203  0.842  1.0
  Si  Si6  1  0.026  0.347  0.157  1.0
  Si  Si7  1  0.653  0.974  0.843  1.0
  Si  Si8  1  0.275  0.041  0.231  1.0
  Si  Si9  1  0.959  0.725  0.769  1.0
  Si  Si10  1  0.493  0.822  0.233  1.0
  Si  Si11  1  0.178  0.507  0.767  1.0
  Si  Si12  1  0.486  0.521  0.196  1.0
  Si  Si13  1  0.479  0.514  0.804  1.0
  Si  Si14  1  0.972  0.033  0.198  1.0
  Si  Si15  1  0.967  0.028  0.802  1.0
  O  O16  1  0.352  0.899  0.228  1.0
  O  O17  1  0.101  0.648  0.772  1.0
  O  O18  1  0.324  0.149  0.038  1.0
  O  O19  1  0.851  0.676  0.962  1.0
  O  O20  1  0.460  0.660  0.271  1.0
  O  O21  1  0.340  0.540  0.729  1.0
  O  O22  1  0.846  0.941  0.336  1.0
  O  O23  1  0.059  0.154  0.664  1.0
  O  O24  1  0.310  0.107  0.387  1.0
  O  O25  1  0.893  0.690  0.613  1.0
  O  O26  1  0.949  0.198  0.178  1.0
  O  O27  1  0.802  0.051  0.822  1.0
  O  O28  1  0.765  0.235  0.000  1.0
  O  O29  1  0.907  0.455  0.191  1.0
  O  O30  1  0.545  0.093  0.809  1.0
  O  O31  1  0.158  0.645  0.281  1.0
  O  O32  1  0.355  0.842  0.719  1.0
  O  O33  1  0.603  0.874  0.041  1.0
  O  O34  1  0.126  0.397  0.959  1.0
  O  O35  1  0.998  0.002  0.000  1.0
  O  O36  1  0.648  0.240  0.433  1.0
  O  O37  1  0.760  0.352  0.567  1.0
  O  O38  1  0.753  0.247  0.500  1.0
  O  O39  1  0.654  0.898  0.683  1.0
  O  O40  1  0.102  0.346  0.317  1.0
  O  O41  1  0.350  0.203  0.681  1.0
  O  O42  1  0.797  0.650  0.319  1.0
  O  O43  1  0.503  0.349  0.828  1.0
  O  O44  1  0.651  0.497  0.172  1.0
  O  O45  1  0.393  0.395  0.334  1.0
  O  O46  1  0.605  0.607  0.666  1.0
  O  O47  1  0.452  0.548  0.000  1.0
  O  O48  1  0.112  0.003  0.269  1.0
  O  O49  1  0.997  0.888  0.731  1.0
  O  O50  1  0.558  0.859  0.390  1.0
  O  O51  1  0.141  0.442  0.610  1.0
[/CIF]
.
The structure described by (Ca2Zr2Si12O35)2O2 crystallizes in the monoclinic C2 space group. The structure consists of two water atoms inside a Ca2Zr2Si12O35 framework. In the Ca2Zr2Si12O35 framework, Ca(1) is bonded to one O(12), one O(14), one O(15), one O(20), one O(5), one O(8), and one O(9) atom to form distorted CaO7 hexagonal pyramids that share  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, edges with two equivalent Zr(1)O6 octahedra,  an edgeedge with one Si(1)O4 tetrahedra, and  an edgeedge with one Si(2)O4 tetrahedra. Zr(1) is bonded to one O(14), one O(15), one O(17), one O(20), one O(4), and one O(5) atom to form ZrO6 octahedra that share  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,  a cornercorner with one Si(5)O4 tetrahedra,  a cornercorner with one Si(6)O4 tetrahedra, and edges with two equivalent Ca(1)O7 hexagonal pyramids. There are six inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(15), one O(16), one O(2), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Zr(1)O6 octahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one Si(3)O4 tetrahedra,  a cornercorner with one Si(5)O4 tetrahedra, and  an edgeedge with one Ca(1)O7 hexagonal pyramid. The corner-sharing octahedral tilt angles are 22°. In the second Si site, Si(2) is bonded to one O(10), one O(14), one O(6), and one O(8) atom to form SiO4 tetrahedra that share  a cornercorner with one Zr(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra,  a cornercorner with one Si(6)O4 tetrahedra, and  an edgeedge with one Ca(1)O7 hexagonal pyramid. The corner-sharing octahedral tilt angles are 22°. In the third Si site, Si(3) is bonded to one O(1), one O(19), one O(2), and one O(5) atom to form SiO4 tetrahedra that share  a cornercorner with one Ca(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(4)O4 tetrahedra, and  a cornercorner with one Si(6)O4 tetrahedra. The corner-sharing octahedral tilt angles are 48°. In the fourth Si site, Si(4) is bonded to one O(1), one O(10), one O(20), and one O(3) atom to form SiO4 tetrahedra that share  a cornercorner with one Ca(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  a cornercorner with one Si(5)O4 tetrahedra. The corner-sharing octahedral tilt angles are 49°. In the fifth Si site, Si(5) is bonded to one O(16), one O(17), one O(18), and one O(3) atom to form SiO4 tetrahedra that share  a cornercorner with one Zr(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(4)O4 tetrahedra, and  a cornercorner with one Si(5)O4 tetrahedra. The corner-sharing octahedral tilt angles are 17°. In the sixth Si site, Si(6) is bonded to one O(11), one O(19), one O(4), and one O(6) atom to form SiO4 tetrahedra that share  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  a cornercorner with one Si(6)O4 tetrahedra. The corner-sharing octahedral tilt angles are 19°. There are nineteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Si(3) and one Si(4) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(3) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Si(4) and one Si(5) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Zr(1) and one Si(6) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Ca(1), one Zr(1), and one Si(3) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one Si(2) and one Si(6) atom. In the seventh O site, O(8) is bonded in a 2-coordinate geometry to one Ca(1), one Si(1), and one Si(2) atom. In the eighth O site, O(9) is bonded in a single-bond geometry to one Ca(1) atom. In the ninth O site, O(10) is bonded in a bent 150 degrees geometry to one Si(2) and one Si(4) atom. In the tenth O site, O(11) is bonded in a bent 150 degrees geometry to two equivalent Si(6) atoms. In the eleventh O site, O(12) is bonded in a bent 120 degrees geometry to one Ca(1) and one O(13) atom. In the twelfth O site, O(13) is bonded in a bent 120 degrees geometry to two equivalent O(12) atoms. In the thirteenth O site, O(14) is bonded in a 3-coordinate geometry to one Ca(1), one Zr(1), and one Si(2) atom. In the fourteenth O site, O(15) is bonded in a 3-coordinate geometry to one Ca(1), one Zr(1), and one Si(1) atom. In the fifteenth O site, O(16) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(5) atom. In the sixteenth O site, O(17) is bonded in a linear geometry to one Zr(1) and one Si(5) atom. In the seventeenth O site, O(18) is bonded in a bent 150 degrees geometry to two equivalent Si(5) atoms. In the eighteenth O site, O(19) is bonded in a bent 150 degrees geometry to one Si(3) and one Si(6) atom. In the nineteenth O site, O(20) is bonded in a distorted trigonal planar geometry to one Ca(1), one Zr(1), and one Si(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_CaZr(SiO3)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.064
_cell_length_b   10.064
_cell_length_c   7.918
_cell_angle_alpha   76.807
_cell_angle_beta   76.807
_cell_angle_gamma   90.398
_symmetry_Int_Tables_number   1
_cell_volume   758.677
_cell_formula_units_Z   2
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
  Ca  Ca0  1  0.488  0.037  0.529  1.0
  Ca  Ca1  1  0.963  0.512  0.471  1.0
  Zr  Zr2  1  0.726  0.772  0.502  1.0
  Zr  Zr3  1  0.228  0.274  0.498  1.0
  Si  Si4  1  0.797  0.574  0.158  1.0
  Si  Si5  1  0.426  0.203  0.842  1.0
  Si  Si6  1  0.026  0.347  0.157  1.0
  Si  Si7  1  0.653  0.974  0.843  1.0
  Si  Si8  1  0.275  0.041  0.231  1.0
  Si  Si9  1  0.959  0.725  0.769  1.0
  Si  Si10  1  0.493  0.822  0.233  1.0
  Si  Si11  1  0.178  0.507  0.767  1.0
  Si  Si12  1  0.486  0.521  0.196  1.0
  Si  Si13  1  0.479  0.514  0.804  1.0
  Si  Si14  1  0.972  0.033  0.198  1.0
  Si  Si15  1  0.967  0.028  0.802  1.0
  O  O16  1  0.352  0.899  0.228  1.0
  O  O17  1  0.101  0.648  0.772  1.0
  O  O18  1  0.324  0.149  0.038  1.0
  O  O19  1  0.851  0.676  0.962  1.0
  O  O20  1  0.460  0.660  0.271  1.0
  O  O21  1  0.340  0.540  0.729  1.0
  O  O22  1  0.846  0.941  0.336  1.0
  O  O23  1  0.059  0.154  0.664  1.0
  O  O24  1  0.310  0.107  0.387  1.0
  O  O25  1  0.893  0.690  0.613  1.0
  O  O26  1  0.949  0.198  0.178  1.0
  O  O27  1  0.802  0.051  0.822  1.0
  O  O28  1  0.765  0.235  0.000  1.0
  O  O29  1  0.907  0.455  0.191  1.0
  O  O30  1  0.545  0.093  0.809  1.0
  O  O31  1  0.158  0.645  0.281  1.0
  O  O32  1  0.355  0.842  0.719  1.0
  O  O33  1  0.603  0.874  0.041  1.0
  O  O34  1  0.126  0.397  0.959  1.0
  O  O35  1  0.998  0.002  0.000  1.0
  O  O36  1  0.648  0.240  0.433  1.0
  O  O37  1  0.760  0.352  0.567  1.0
  O  O38  1  0.753  0.247  0.500  1.0
  O  O39  1  0.654  0.898  0.683  1.0
  O  O40  1  0.102  0.346  0.317  1.0
  O  O41  1  0.350  0.203  0.681  1.0
  O  O42  1  0.797  0.650  0.319  1.0
  O  O43  1  0.503  0.349  0.828  1.0
  O  O44  1  0.651  0.497  0.172  1.0
  O  O45  1  0.393  0.395  0.334  1.0
  O  O46  1  0.605  0.607  0.666  1.0
  O  O47  1  0.452  0.548  0.000  1.0
  O  O48  1  0.112  0.003  0.269  1.0
  O  O49  1  0.997  0.888  0.731  1.0
  O  O50  1  0.558  0.859  0.390  1.0
  O  O51  1  0.141  0.442  0.610  1.0
[/CIF]
.