The material structure described by Cu2V2O7 crystallizes in the monoclinic C2/c space group. V(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form VO4 tetrahedra that share  a cornercorner with one V(1)O4 tetrahedra and corners with five equivalent Cu(1)O5 trigonal bipyramids. Cu(1) is bonded to one O(2), two equivalent O(3), and two equivalent O(4) atoms to form CuO5 trigonal bipyramids that share corners with five equivalent V(1)O4 tetrahedra and edges with two equivalent Cu(1)O5 trigonal bipyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to two equivalent V(1) atoms. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one V(1) and one Cu(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one V(1) and two equivalent Cu(1) atoms. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one V(1) and two equivalent Cu(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_V2Cu2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.541
_cell_length_b   5.541
_cell_length_c   10.128
_cell_angle_alpha   76.420
_cell_angle_beta   76.420
_cell_angle_gamma   91.852
_symmetry_Int_Tables_number   1
_cell_volume   292.601
_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
  V  V0  1  0.444  0.002  0.714  1.0
  V  V1  1  0.998  0.556  0.786  1.0
  V  V2  1  0.556  0.998  0.286  1.0
  V  V3  1  0.002  0.444  0.214  1.0
  Cu  Cu4  1  0.240  0.386  0.485  1.0
  Cu  Cu5  1  0.614  0.760  0.015  1.0
  Cu  Cu6  1  0.760  0.614  0.515  1.0
  Cu  Cu7  1  0.386  0.240  0.985  1.0
  O  O8  1  0.869  0.131  0.250  1.0
  O  O9  1  0.131  0.869  0.750  1.0
  O  O10  1  0.367  0.179  0.364  1.0
  O  O11  1  0.821  0.633  0.136  1.0
  O  O12  1  0.633  0.821  0.636  1.0
  O  O13  1  0.179  0.367  0.864  1.0
  O  O14  1  0.468  0.289  0.602  1.0
  O  O15  1  0.711  0.532  0.898  1.0
  O  O16  1  0.532  0.711  0.398  1.0
  O  O17  1  0.289  0.468  0.102  1.0
  O  O18  1  0.483  0.988  0.128  1.0
  O  O19  1  0.012  0.517  0.372  1.0
  O  O20  1  0.517  0.012  0.872  1.0
  O  O21  1  0.988  0.483  0.628  1.0
[/CIF]
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The material structure described by Cu2V2O7 crystallizes in the monoclinic C2/c space group. V(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form VO4 tetrahedra that share  a cornercorner with one V(1)O4 tetrahedra and corners with five equivalent Cu(1)O5 trigonal bipyramids. Cu(1) is bonded to one O(2), two equivalent O(3), and two equivalent O(4) atoms to form CuO5 trigonal bipyramids that share corners with five equivalent V(1)O4 tetrahedra and edges with two equivalent Cu(1)O5 trigonal bipyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to two equivalent V(1) atoms. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one V(1) and one Cu(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one V(1) and two equivalent Cu(1) atoms. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one V(1) and two equivalent Cu(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_V2Cu2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.541
_cell_length_b   5.541
_cell_length_c   10.128
_cell_angle_alpha   76.420
_cell_angle_beta   76.420
_cell_angle_gamma   91.852
_symmetry_Int_Tables_number   1
_cell_volume   292.601
_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
  V  V0  1  0.444  0.002  0.714  1.0
  V  V1  1  0.998  0.556  0.786  1.0
  V  V2  1  0.556  0.998  0.286  1.0
  V  V3  1  0.002  0.444  0.214  1.0
  Cu  Cu4  1  0.240  0.386  0.485  1.0
  Cu  Cu5  1  0.614  0.760  0.015  1.0
  Cu  Cu6  1  0.760  0.614  0.515  1.0
  Cu  Cu7  1  0.386  0.240  0.985  1.0
  O  O8  1  0.869  0.131  0.250  1.0
  O  O9  1  0.131  0.869  0.750  1.0
  O  O10  1  0.367  0.179  0.364  1.0
  O  O11  1  0.821  0.633  0.136  1.0
  O  O12  1  0.633  0.821  0.636  1.0
  O  O13  1  0.179  0.367  0.864  1.0
  O  O14  1  0.468  0.289  0.602  1.0
  O  O15  1  0.711  0.532  0.898  1.0
  O  O16  1  0.532  0.711  0.398  1.0
  O  O17  1  0.289  0.468  0.102  1.0
  O  O18  1  0.483  0.988  0.128  1.0
  O  O19  1  0.012  0.517  0.372  1.0
  O  O20  1  0.517  0.012  0.872  1.0
  O  O21  1  0.988  0.483  0.628  1.0
[/CIF]
.