The material structure described by V3As2O9 crystallizes in the monoclinic Cm space group. There are three inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(3), one O(4), one O(5), and two equivalent O(6) atoms to form a mixture of edge and corner-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 1-48°. In the second V site, V(2) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(7) atoms to form a mixture of distorted edge and corner-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 1-48°. In the third V site, V(3) is bonded to one O(1), one O(2), two equivalent O(6), and two equivalent O(7) atoms to form corner-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 34-48°. There are two inequivalent As sites. In the first As site, As(1) is bonded in a distorted T-shaped geometry to one O(3) and two equivalent O(6) atoms. In the second As site, As(2) is bonded in a distorted T-shaped geometry to one O(4) and two equivalent O(7) atoms. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one V(1) and one V(3) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one V(2) and one V(3) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one V(1), one V(2), and one As(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one V(1), one V(2), and one As(2) atom. In the fifth O site, O(5) is bonded in a linear geometry to one V(1) and one V(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one V(1), one V(3), and one As(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one V(2), one V(3), and one As(2) atom. is represented by the CIF file [CIF]
data_V3As2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.389
_cell_length_b   5.389
_cell_length_c   6.353
_cell_angle_alpha   78.263
_cell_angle_beta   78.263
_cell_angle_gamma   72.984
_symmetry_Int_Tables_number   1
_cell_volume   170.676
_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
  V  V0  1  0.580  0.580  0.716  1.0
  V  V1  1  0.405  0.405  0.298  1.0
  V  V2  1  0.984  0.984  0.517  1.0
  As  As3  1  0.181  0.181  0.820  1.0
  As  As4  1  0.815  0.815  0.183  1.0
  O  O5  1  0.794  0.794  0.694  1.0
  O  O6  1  0.211  0.211  0.312  1.0
  O  O7  1  0.369  0.369  0.629  1.0
  O  O8  1  0.629  0.629  0.375  1.0
  O  O9  1  0.498  0.498  0.995  1.0
  O  O10  1  0.891  0.272  0.691  1.0
  O  O11  1  0.272  0.891  0.691  1.0
  O  O12  1  0.111  0.731  0.307  1.0
  O  O13  1  0.731  0.111  0.307  1.0
[/CIF]
.
The material structure described by V3As2O9 crystallizes in the monoclinic Cm space group. There are three inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(3), one O(4), one O(5), and two equivalent O(6) atoms to form a mixture of edge and corner-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 1-48°. In the second V site, V(2) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(7) atoms to form a mixture of distorted edge and corner-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 1-48°. In the third V site, V(3) is bonded to one O(1), one O(2), two equivalent O(6), and two equivalent O(7) atoms to form corner-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 34-48°. There are two inequivalent As sites. In the first As site, As(1) is bonded in a distorted T-shaped geometry to one O(3) and two equivalent O(6) atoms. In the second As site, As(2) is bonded in a distorted T-shaped geometry to one O(4) and two equivalent O(7) atoms. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one V(1) and one V(3) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one V(2) and one V(3) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one V(1), one V(2), and one As(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one V(1), one V(2), and one As(2) atom. In the fifth O site, O(5) is bonded in a linear geometry to one V(1) and one V(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one V(1), one V(3), and one As(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one V(2), one V(3), and one As(2) atom. is represented by the CIF file [CIF]
data_V3As2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.389
_cell_length_b   5.389
_cell_length_c   6.353
_cell_angle_alpha   78.263
_cell_angle_beta   78.263
_cell_angle_gamma   72.984
_symmetry_Int_Tables_number   1
_cell_volume   170.676
_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
  V  V0  1  0.580  0.580  0.716  1.0
  V  V1  1  0.405  0.405  0.298  1.0
  V  V2  1  0.984  0.984  0.517  1.0
  As  As3  1  0.181  0.181  0.820  1.0
  As  As4  1  0.815  0.815  0.183  1.0
  O  O5  1  0.794  0.794  0.694  1.0
  O  O6  1  0.211  0.211  0.312  1.0
  O  O7  1  0.369  0.369  0.629  1.0
  O  O8  1  0.629  0.629  0.375  1.0
  O  O9  1  0.498  0.498  0.995  1.0
  O  O10  1  0.891  0.272  0.691  1.0
  O  O11  1  0.272  0.891  0.691  1.0
  O  O12  1  0.111  0.731  0.307  1.0
  O  O13  1  0.731  0.111  0.307  1.0
[/CIF]
.