The material structure described by Cs2NaVO4 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded to one O(2), two equivalent O(1), and four equivalent O(3) atoms to form distorted CsO7 hexagonal pyramids that share corners with four equivalent Cs(1)O7 hexagonal pyramids,  a cornercorner with one V(1)O4 tetrahedra, corners with three equivalent Na(1)O5 trigonal bipyramids, edges with four equivalent Cs(1)O7 hexagonal pyramids, edges with three equivalent V(1)O4 tetrahedra, and  an edgeedge with one Na(1)O5 trigonal bipyramid. In the second Cs site, Cs(2) is bonded in a 10-coordinate geometry to one O(3), three equivalent O(2), and six equivalent O(1) atoms. Na(1) is bonded to one O(2) and four equivalent O(1) atoms to form distorted NaO5 trigonal bipyramids that share corners with three equivalent Cs(1)O7 hexagonal pyramids, corners with three equivalent V(1)O4 tetrahedra,  an edgeedge with one Cs(1)O7 hexagonal pyramid,  an edgeedge with one V(1)O4 tetrahedra, and edges with two equivalent Na(1)O5 trigonal bipyramids. V(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form VO4 tetrahedra that share  a cornercorner with one Cs(1)O7 hexagonal pyramid, corners with three equivalent Na(1)O5 trigonal bipyramids, edges with three equivalent Cs(1)O7 hexagonal pyramids, and  an edgeedge with one Na(1)O5 trigonal bipyramid. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Cs(1), three equivalent Cs(2), two equivalent Na(1), and one V(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Cs(1), three equivalent Cs(2), one Na(1), and one V(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Cs(2), four equivalent Cs(1), and one V(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cs2NaVO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.283
_cell_length_b   6.191
_cell_length_c   8.436
_cell_angle_alpha   86.876
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   327.660
_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
  Cs  Cs0  1  0.750  0.202  0.514  1.0
  Cs  Cs1  1  0.250  0.798  0.486  1.0
  Cs  Cs2  1  0.250  0.351  0.181  1.0
  Cs  Cs3  1  0.750  0.649  0.819  1.0
  Na  Na4  1  0.250  0.872  0.973  1.0
  Na  Na5  1  0.750  0.128  0.027  1.0
  V  V6  1  0.750  0.704  0.242  1.0
  V  V7  1  0.250  0.296  0.758  1.0
  O  O8  1  0.975  0.842  0.166  1.0
  O  O9  1  0.475  0.158  0.834  1.0
  O  O10  1  0.025  0.158  0.834  1.0
  O  O11  1  0.525  0.842  0.166  1.0
  O  O12  1  0.250  0.563  0.819  1.0
  O  O13  1  0.250  0.298  0.551  1.0
  O  O14  1  0.750  0.437  0.181  1.0
  O  O15  1  0.750  0.702  0.449  1.0
[/CIF]
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The material structure described by Cs2NaVO4 crystallizes in the monoclinic P2_1/m space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded to one O(2), two equivalent O(1), and four equivalent O(3) atoms to form distorted CsO7 hexagonal pyramids that share corners with four equivalent Cs(1)O7 hexagonal pyramids,  a cornercorner with one V(1)O4 tetrahedra, corners with three equivalent Na(1)O5 trigonal bipyramids, edges with four equivalent Cs(1)O7 hexagonal pyramids, edges with three equivalent V(1)O4 tetrahedra, and  an edgeedge with one Na(1)O5 trigonal bipyramid. In the second Cs site, Cs(2) is bonded in a 10-coordinate geometry to one O(3), three equivalent O(2), and six equivalent O(1) atoms. Na(1) is bonded to one O(2) and four equivalent O(1) atoms to form distorted NaO5 trigonal bipyramids that share corners with three equivalent Cs(1)O7 hexagonal pyramids, corners with three equivalent V(1)O4 tetrahedra,  an edgeedge with one Cs(1)O7 hexagonal pyramid,  an edgeedge with one V(1)O4 tetrahedra, and edges with two equivalent Na(1)O5 trigonal bipyramids. V(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form VO4 tetrahedra that share  a cornercorner with one Cs(1)O7 hexagonal pyramid, corners with three equivalent Na(1)O5 trigonal bipyramids, edges with three equivalent Cs(1)O7 hexagonal pyramids, and  an edgeedge with one Na(1)O5 trigonal bipyramid. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Cs(1), three equivalent Cs(2), two equivalent Na(1), and one V(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Cs(1), three equivalent Cs(2), one Na(1), and one V(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Cs(2), four equivalent Cs(1), and one V(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cs2NaVO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.283
_cell_length_b   6.191
_cell_length_c   8.436
_cell_angle_alpha   86.876
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   327.660
_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
  Cs  Cs0  1  0.750  0.202  0.514  1.0
  Cs  Cs1  1  0.250  0.798  0.486  1.0
  Cs  Cs2  1  0.250  0.351  0.181  1.0
  Cs  Cs3  1  0.750  0.649  0.819  1.0
  Na  Na4  1  0.250  0.872  0.973  1.0
  Na  Na5  1  0.750  0.128  0.027  1.0
  V  V6  1  0.750  0.704  0.242  1.0
  V  V7  1  0.250  0.296  0.758  1.0
  O  O8  1  0.975  0.842  0.166  1.0
  O  O9  1  0.475  0.158  0.834  1.0
  O  O10  1  0.025  0.158  0.834  1.0
  O  O11  1  0.525  0.842  0.166  1.0
  O  O12  1  0.250  0.563  0.819  1.0
  O  O13  1  0.250  0.298  0.551  1.0
  O  O14  1  0.750  0.437  0.181  1.0
  O  O15  1  0.750  0.702  0.449  1.0
[/CIF]
.