The material structure described by Cu5(AsO5)2 crystallizes in the triclinic P-1 space group. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted square co-planar geometry to two equivalent O(1) and two equivalent O(4) atoms. In the second Cu site, Cu(2) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(5) atom to form distorted CuO5 trigonal bipyramids that share corners with four equivalent As(1)O4 tetrahedra,  a cornercorner with one Cu(3)O5 trigonal bipyramid, and edges with two equivalent Cu(3)O5 trigonal bipyramids. In the third Cu site, Cu(3) is bonded to one O(3), two equivalent O(1), and two equivalent O(2) atoms to form distorted CuO5 trigonal bipyramids that share corners with three equivalent As(1)O4 tetrahedra,  a cornercorner with one Cu(2)O5 trigonal bipyramid, edges with two equivalent Cu(2)O5 trigonal bipyramids, and edges with two equivalent Cu(3)O5 trigonal bipyramids. As(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form AsO4 tetrahedra that share corners with three equivalent Cu(3)O5 trigonal bipyramids and corners with four equivalent Cu(2)O5 trigonal bipyramids. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Cu(1), one Cu(2), and two equivalent Cu(3) atoms to form a mixture of distorted corner and edge-sharing OCu4 tetrahedra. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Cu(2), two equivalent Cu(3), and one As(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Cu(2), one Cu(3), and one As(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Cu(1), one Cu(2), and one As(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Cu(2) and one As(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cu5(AsO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.134
_cell_length_b   6.254
_cell_length_c   6.284
_cell_angle_alpha   100.600
_cell_angle_beta   96.439
_cell_angle_gamma   95.150
_symmetry_Int_Tables_number   1
_cell_volume   195.802
_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
  Cu  Cu0  1  0.000  0.000  0.500  1.0
  Cu  Cu1  1  0.857  0.335  0.278  1.0
  Cu  Cu2  1  0.143  0.665  0.722  1.0
  Cu  Cu3  1  0.258  0.124  0.055  1.0
  Cu  Cu4  1  0.742  0.876  0.945  1.0
  As  As5  1  0.593  0.337  0.728  1.0
  As  As6  1  0.407  0.663  0.272  1.0
  O  O7  1  0.018  0.943  0.786  1.0
  O  O8  1  0.982  0.057  0.214  1.0
  O  O9  1  0.580  0.186  0.931  1.0
  O  O10  1  0.420  0.814  0.069  1.0
  O  O11  1  0.807  0.565  0.834  1.0
  O  O12  1  0.193  0.435  0.166  1.0
  O  O13  1  0.707  0.190  0.507  1.0
  O  O14  1  0.293  0.810  0.493  1.0
  O  O15  1  0.284  0.391  0.649  1.0
  O  O16  1  0.716  0.609  0.351  1.0
[/CIF]
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The material structure described by Cu5(AsO5)2 crystallizes in the triclinic P-1 space group. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted square co-planar geometry to two equivalent O(1) and two equivalent O(4) atoms. In the second Cu site, Cu(2) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(5) atom to form distorted CuO5 trigonal bipyramids that share corners with four equivalent As(1)O4 tetrahedra,  a cornercorner with one Cu(3)O5 trigonal bipyramid, and edges with two equivalent Cu(3)O5 trigonal bipyramids. In the third Cu site, Cu(3) is bonded to one O(3), two equivalent O(1), and two equivalent O(2) atoms to form distorted CuO5 trigonal bipyramids that share corners with three equivalent As(1)O4 tetrahedra,  a cornercorner with one Cu(2)O5 trigonal bipyramid, edges with two equivalent Cu(2)O5 trigonal bipyramids, and edges with two equivalent Cu(3)O5 trigonal bipyramids. As(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form AsO4 tetrahedra that share corners with three equivalent Cu(3)O5 trigonal bipyramids and corners with four equivalent Cu(2)O5 trigonal bipyramids. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Cu(1), one Cu(2), and two equivalent Cu(3) atoms to form a mixture of distorted corner and edge-sharing OCu4 tetrahedra. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Cu(2), two equivalent Cu(3), and one As(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Cu(2), one Cu(3), and one As(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Cu(1), one Cu(2), and one As(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Cu(2) and one As(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cu5(AsO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.134
_cell_length_b   6.254
_cell_length_c   6.284
_cell_angle_alpha   100.600
_cell_angle_beta   96.439
_cell_angle_gamma   95.150
_symmetry_Int_Tables_number   1
_cell_volume   195.802
_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
  Cu  Cu0  1  0.000  0.000  0.500  1.0
  Cu  Cu1  1  0.857  0.335  0.278  1.0
  Cu  Cu2  1  0.143  0.665  0.722  1.0
  Cu  Cu3  1  0.258  0.124  0.055  1.0
  Cu  Cu4  1  0.742  0.876  0.945  1.0
  As  As5  1  0.593  0.337  0.728  1.0
  As  As6  1  0.407  0.663  0.272  1.0
  O  O7  1  0.018  0.943  0.786  1.0
  O  O8  1  0.982  0.057  0.214  1.0
  O  O9  1  0.580  0.186  0.931  1.0
  O  O10  1  0.420  0.814  0.069  1.0
  O  O11  1  0.807  0.565  0.834  1.0
  O  O12  1  0.193  0.435  0.166  1.0
  O  O13  1  0.707  0.190  0.507  1.0
  O  O14  1  0.293  0.810  0.493  1.0
  O  O15  1  0.284  0.391  0.649  1.0
  O  O16  1  0.716  0.609  0.351  1.0
[/CIF]
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