The crystal structure described by CaV2Zn2(SiO5)2 crystallizes in the triclinic P1 space group. Ca(1) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(4), one O(5), one O(7), and one O(8) atom. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(10), one O(2), one O(4), one O(5), one O(7), and one O(9) atom to form VO6 octahedra that share corners with two equivalent V(2)O6 octahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and corners with two equivalent Zn(2)O4 trigonal pyramids. The corner-sharing octahedral tilt angles range from 42-45°. In the second V site, V(2) is bonded to one O(1), one O(10), one O(3), one O(6), one O(8), and one O(9) atom to form VO6 octahedra that share corners with two equivalent V(1)O6 octahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra,  a cornercorner with one Zn(2)O4 trigonal pyramid, and  an edgeedge with one Zn(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 42-45°. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 6-coordinate geometry to one O(10), one O(2), one O(3), one O(6), one O(7), and one O(8) atom. In the second Zn site, Zn(2) is bonded to one O(1), one O(3), one O(5), and one O(9) atom to form ZnO4 trigonal pyramids that share  a cornercorner with one V(2)O6 octahedra, corners with two equivalent V(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  an edgeedge with one V(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 58-72°. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(2), one O(7), and one O(8) atom to form SiO4 tetrahedra that share corners with two equivalent V(1)O6 octahedra, corners with two equivalent V(2)O6 octahedra, and  a cornercorner with one Zn(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 18-60°. In the second Si site, Si(2) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form SiO4 tetrahedra that share corners with two equivalent V(1)O6 octahedra, corners with two equivalent V(2)O6 octahedra, and corners with two equivalent Zn(2)O4 trigonal pyramids. The corner-sharing octahedral tilt angles range from 42-60°. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Ca(1), one V(2), one Zn(2), and one Si(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one V(1), one Zn(1), and one Si(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one V(2), one Zn(1), one Zn(2), and one Si(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Ca(1), one V(1), and one Si(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal pyramidal geometry to one Ca(1), one V(1), one Zn(2), and one Si(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one V(2), one Zn(1), and one Si(2) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Ca(1), one V(1), one Zn(1), and one Si(1) atom. In the eighth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Ca(1), one V(2), one Zn(1), and one Si(1) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one V(1), one V(2), and one Zn(2) atom. In the tenth O site, O(10) is bonded in a rectangular see-saw-like geometry to one Ca(1), one V(1), one V(2), and one Zn(1) atom. is represented by the CIF card [CIF]
data_CaV2Zn2(SiO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.587
_cell_length_b   7.553
_cell_length_c   8.329
_cell_angle_alpha   88.548
_cell_angle_beta   39.538
_cell_angle_gamma   105.549
_symmetry_Int_Tables_number   1
_cell_volume   199.520
_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
  Ca  Ca0  1  0.212  0.381  0.211  1.0
  V  V1  1  0.506  0.515  0.478  1.0
  V  V2  1  0.449  0.988  0.528  1.0
  Zn  Zn3  1  0.834  0.215  0.039  1.0
  Zn  Zn4  1  0.583  0.806  0.753  1.0
  Si  Si5  1  0.535  0.218  0.821  1.0
  Si  Si6  1  0.448  0.787  0.187  1.0
  O  O7  1  0.719  0.098  0.617  1.0
  O  O8  1  0.499  0.392  0.723  1.0
  O  O9  1  0.207  0.880  0.426  1.0
  O  O10  1  0.507  0.609  0.250  1.0
  O  O11  1  0.196  0.683  0.147  1.0
  O  O12  1  0.892  0.973  0.895  1.0
  O  O13  1  0.837  0.337  0.819  1.0
  O  O14  1  0.071  0.085  0.140  1.0
  O  O15  1  0.415  0.734  0.619  1.0
  O  O16  1  0.614  0.283  0.350  1.0
[/CIF]
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The crystal structure described by CaV2Zn2(SiO5)2 crystallizes in the triclinic P1 space group. Ca(1) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(4), one O(5), one O(7), and one O(8) atom. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(10), one O(2), one O(4), one O(5), one O(7), and one O(9) atom to form VO6 octahedra that share corners with two equivalent V(2)O6 octahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and corners with two equivalent Zn(2)O4 trigonal pyramids. The corner-sharing octahedral tilt angles range from 42-45°. In the second V site, V(2) is bonded to one O(1), one O(10), one O(3), one O(6), one O(8), and one O(9) atom to form VO6 octahedra that share corners with two equivalent V(1)O6 octahedra, corners with two equivalent Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra,  a cornercorner with one Zn(2)O4 trigonal pyramid, and  an edgeedge with one Zn(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 42-45°. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 6-coordinate geometry to one O(10), one O(2), one O(3), one O(6), one O(7), and one O(8) atom. In the second Zn site, Zn(2) is bonded to one O(1), one O(3), one O(5), and one O(9) atom to form ZnO4 trigonal pyramids that share  a cornercorner with one V(2)O6 octahedra, corners with two equivalent V(1)O6 octahedra,  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  an edgeedge with one V(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 58-72°. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(2), one O(7), and one O(8) atom to form SiO4 tetrahedra that share corners with two equivalent V(1)O6 octahedra, corners with two equivalent V(2)O6 octahedra, and  a cornercorner with one Zn(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 18-60°. In the second Si site, Si(2) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form SiO4 tetrahedra that share corners with two equivalent V(1)O6 octahedra, corners with two equivalent V(2)O6 octahedra, and corners with two equivalent Zn(2)O4 trigonal pyramids. The corner-sharing octahedral tilt angles range from 42-60°. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Ca(1), one V(2), one Zn(2), and one Si(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one V(1), one Zn(1), and one Si(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one V(2), one Zn(1), one Zn(2), and one Si(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Ca(1), one V(1), and one Si(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal pyramidal geometry to one Ca(1), one V(1), one Zn(2), and one Si(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one V(2), one Zn(1), and one Si(2) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Ca(1), one V(1), one Zn(1), and one Si(1) atom. In the eighth O site, O(8) is bonded in a distorted rectangular see-saw-like geometry to one Ca(1), one V(2), one Zn(1), and one Si(1) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one V(1), one V(2), and one Zn(2) atom. In the tenth O site, O(10) is bonded in a rectangular see-saw-like geometry to one Ca(1), one V(1), one V(2), and one Zn(1) atom. is represented by the CIF card [CIF]
data_CaV2Zn2(SiO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.587
_cell_length_b   7.553
_cell_length_c   8.329
_cell_angle_alpha   88.548
_cell_angle_beta   39.538
_cell_angle_gamma   105.549
_symmetry_Int_Tables_number   1
_cell_volume   199.520
_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
  Ca  Ca0  1  0.212  0.381  0.211  1.0
  V  V1  1  0.506  0.515  0.478  1.0
  V  V2  1  0.449  0.988  0.528  1.0
  Zn  Zn3  1  0.834  0.215  0.039  1.0
  Zn  Zn4  1  0.583  0.806  0.753  1.0
  Si  Si5  1  0.535  0.218  0.821  1.0
  Si  Si6  1  0.448  0.787  0.187  1.0
  O  O7  1  0.719  0.098  0.617  1.0
  O  O8  1  0.499  0.392  0.723  1.0
  O  O9  1  0.207  0.880  0.426  1.0
  O  O10  1  0.507  0.609  0.250  1.0
  O  O11  1  0.196  0.683  0.147  1.0
  O  O12  1  0.892  0.973  0.895  1.0
  O  O13  1  0.837  0.337  0.819  1.0
  O  O14  1  0.071  0.085  0.140  1.0
  O  O15  1  0.415  0.734  0.619  1.0
  O  O16  1  0.614  0.283  0.350  1.0
[/CIF]
.