The material structure described by Sr2V3O9 crystallizes in the monoclinic Cc space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), one O(8), and one O(9) atom. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(7), one O(8), one O(9), two equivalent O(3), and two equivalent O(4) atoms. There are three inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(2), one O(8), and one O(9) atom to form corner-sharing VO4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-58°. In the second V site, V(2) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form corner-sharing VO4 tetrahedra. The corner-sharing octahedral tilt angles range from 36-47°. In the third V site, V(3) is bonded to one O(5), one O(6), one O(8), one O(9), and two equivalent O(7) atoms to form distorted VO6 octahedra that share corners with two equivalent V(3)O6 octahedra, corners with two equivalent V(1)O4 tetrahedra, and corners with two equivalent V(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 36°. There are nine inequivalent O sites. In the first O site, O(7) is bonded in a 3-coordinate geometry to one Sr(2) and two equivalent V(3) atoms. In the second O site, O(8) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(2), one V(1), and one V(3) atom. In the third O site, O(9) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(2), one V(1), and one V(3) atom. In the fourth O site, O(1) is bonded in a distorted single-bond geometry to one Sr(1), one Sr(2), and one V(1) atom. In the fifth O site, O(2) is bonded in a distorted single-bond geometry to one Sr(1), one Sr(2), and one V(1) atom. In the sixth O site, O(3) is bonded in a distorted single-bond geometry to one Sr(1), two equivalent Sr(2), and one V(2) atom. In the seventh O site, O(4) is bonded in a distorted single-bond geometry to one Sr(1), two equivalent Sr(2), and one V(2) atom. In the eighth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Sr(1), one V(2), and one V(3) atom. In the ninth O site, O(6) is bonded in a 2-coordinate geometry to one Sr(1), one V(2), and one V(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr2V3O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.972
_cell_length_b   8.972
_cell_length_c   6.964
_cell_angle_alpha   77.863
_cell_angle_beta   77.863
_cell_angle_gamma   130.120
_symmetry_Int_Tables_number   1
_cell_volume   371.616
_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
  Sr  Sr0  1  0.873  0.124  0.250  1.0
  Sr  Sr1  1  0.124  0.873  0.750  1.0
  Sr  Sr2  1  0.454  0.551  0.247  1.0
  Sr  Sr3  1  0.551  0.454  0.747  1.0
  V  V4  1  0.080  0.922  0.249  1.0
  V  V5  1  0.922  0.080  0.749  1.0
  V  V6  1  0.660  0.340  0.251  1.0
  V  V7  1  0.340  0.660  0.751  1.0
  V  V8  1  0.036  0.527  0.468  1.0
  V  V9  1  0.527  0.036  0.968  1.0
  O  O10  1  0.183  0.145  0.281  1.0
  O  O11  1  0.855  0.818  0.219  1.0
  O  O12  1  0.818  0.855  0.719  1.0
  O  O13  1  0.145  0.183  0.781  1.0
  O  O14  1  0.483  0.286  0.478  1.0
  O  O15  1  0.711  0.517  0.026  1.0
  O  O16  1  0.517  0.711  0.526  1.0
  O  O17  1  0.286  0.483  0.978  1.0
  O  O18  1  0.894  0.443  0.276  1.0
  O  O19  1  0.556  0.108  0.220  1.0
  O  O20  1  0.108  0.556  0.720  1.0
  O  O21  1  0.443  0.894  0.776  1.0
  O  O22  1  0.288  0.715  0.255  1.0
  O  O23  1  0.715  0.288  0.755  1.0
  O  O24  1  0.998  0.718  0.487  1.0
  O  O25  1  0.281  0.003  0.009  1.0
  O  O26  1  0.003  0.281  0.509  1.0
  O  O27  1  0.718  0.998  0.987  1.0
[/CIF]
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The material structure described by Sr2V3O9 crystallizes in the monoclinic Cc space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), one O(8), and one O(9) atom. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(7), one O(8), one O(9), two equivalent O(3), and two equivalent O(4) atoms. There are three inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(2), one O(8), and one O(9) atom to form corner-sharing VO4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-58°. In the second V site, V(2) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form corner-sharing VO4 tetrahedra. The corner-sharing octahedral tilt angles range from 36-47°. In the third V site, V(3) is bonded to one O(5), one O(6), one O(8), one O(9), and two equivalent O(7) atoms to form distorted VO6 octahedra that share corners with two equivalent V(3)O6 octahedra, corners with two equivalent V(1)O4 tetrahedra, and corners with two equivalent V(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 36°. There are nine inequivalent O sites. In the first O site, O(7) is bonded in a 3-coordinate geometry to one Sr(2) and two equivalent V(3) atoms. In the second O site, O(8) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(2), one V(1), and one V(3) atom. In the third O site, O(9) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(2), one V(1), and one V(3) atom. In the fourth O site, O(1) is bonded in a distorted single-bond geometry to one Sr(1), one Sr(2), and one V(1) atom. In the fifth O site, O(2) is bonded in a distorted single-bond geometry to one Sr(1), one Sr(2), and one V(1) atom. In the sixth O site, O(3) is bonded in a distorted single-bond geometry to one Sr(1), two equivalent Sr(2), and one V(2) atom. In the seventh O site, O(4) is bonded in a distorted single-bond geometry to one Sr(1), two equivalent Sr(2), and one V(2) atom. In the eighth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Sr(1), one V(2), and one V(3) atom. In the ninth O site, O(6) is bonded in a 2-coordinate geometry to one Sr(1), one V(2), and one V(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr2V3O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.972
_cell_length_b   8.972
_cell_length_c   6.964
_cell_angle_alpha   77.863
_cell_angle_beta   77.863
_cell_angle_gamma   130.120
_symmetry_Int_Tables_number   1
_cell_volume   371.616
_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
  Sr  Sr0  1  0.873  0.124  0.250  1.0
  Sr  Sr1  1  0.124  0.873  0.750  1.0
  Sr  Sr2  1  0.454  0.551  0.247  1.0
  Sr  Sr3  1  0.551  0.454  0.747  1.0
  V  V4  1  0.080  0.922  0.249  1.0
  V  V5  1  0.922  0.080  0.749  1.0
  V  V6  1  0.660  0.340  0.251  1.0
  V  V7  1  0.340  0.660  0.751  1.0
  V  V8  1  0.036  0.527  0.468  1.0
  V  V9  1  0.527  0.036  0.968  1.0
  O  O10  1  0.183  0.145  0.281  1.0
  O  O11  1  0.855  0.818  0.219  1.0
  O  O12  1  0.818  0.855  0.719  1.0
  O  O13  1  0.145  0.183  0.781  1.0
  O  O14  1  0.483  0.286  0.478  1.0
  O  O15  1  0.711  0.517  0.026  1.0
  O  O16  1  0.517  0.711  0.526  1.0
  O  O17  1  0.286  0.483  0.978  1.0
  O  O18  1  0.894  0.443  0.276  1.0
  O  O19  1  0.556  0.108  0.220  1.0
  O  O20  1  0.108  0.556  0.720  1.0
  O  O21  1  0.443  0.894  0.776  1.0
  O  O22  1  0.288  0.715  0.255  1.0
  O  O23  1  0.715  0.288  0.755  1.0
  O  O24  1  0.998  0.718  0.487  1.0
  O  O25  1  0.281  0.003  0.009  1.0
  O  O26  1  0.003  0.281  0.509  1.0
  O  O27  1  0.718  0.998  0.987  1.0
[/CIF]
.