The compound described by Cu4Se3O10 crystallizes in the triclinic P-1 space group. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(10), one O(2), one O(6), and two equivalent O(1) atoms to form a mixture of distorted edge and corner-sharing CuO5 trigonal bipyramids. In the second Cu site, Cu(2) is bonded to one O(2), one O(4), one O(5), one O(6), and one O(9) atom to form a mixture of edge and corner-sharing CuO5 trigonal bipyramids. In the third Cu site, Cu(3) is bonded to one O(1), one O(4), one O(5), and two equivalent O(8) atoms to form a mixture of distorted edge and corner-sharing CuO5 square pyramids. In the fourth Cu site, Cu(4) is bonded to one O(1), one O(10), one O(7), and two equivalent O(3) atoms to form a mixture of distorted edge and corner-sharing CuO5 trigonal bipyramids. There are three inequivalent Se sites. In the first Se site, Se(1) is bonded in a distorted trigonal non-coplanar geometry to one O(2), one O(3), and one O(4) atom. In the second Se site, Se(2) is bonded in a trigonal non-coplanar geometry to one O(5), one O(6), and one O(7) atom. In the third Se site, Se(3) is bonded in a distorted trigonal non-coplanar geometry to one O(10), one O(8), and one O(9) atom. There are ten inequivalent O sites. In the first O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one Cu(1), one Cu(4), and one Se(3) atom. In the second O site, O(1) is bonded to one Cu(3), one Cu(4), and two equivalent Cu(1) atoms to form edge-sharing OCu4 tetrahedra. In the third O site, O(2) is bonded in a distorted trigonal planar geometry to one Cu(1), one Cu(2), and one Se(1) atom. In the fourth O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Cu(4) and one Se(1) atom. In the fifth O site, O(4) is bonded in a trigonal planar geometry to one Cu(2), one Cu(3), and one Se(1) atom. In the sixth O site, O(5) is bonded in a trigonal planar geometry to one Cu(2), one Cu(3), and one Se(2) atom. In the seventh O site, O(6) is bonded in a trigonal planar geometry to one Cu(1), one Cu(2), and one Se(2) atom. In the eighth O site, O(7) is bonded in a bent 120 degrees geometry to one Cu(4) and one Se(2) atom. In the ninth O site, O(8) is bonded in a trigonal planar geometry to two equivalent Cu(3) and one Se(3) atom. In the tenth O site, O(9) is bonded in a bent 120 degrees geometry to one Cu(2) and one Se(3) atom. is represented by the CIF card [CIF]
data_Cu4Se3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.978
_cell_length_b   8.166
_cell_length_c   8.369
_cell_angle_alpha   77.186
_cell_angle_beta   65.540
_cell_angle_gamma   81.472
_symmetry_Int_Tables_number   1
_cell_volume   482.931
_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
  Cu  Cu0  1  0.679  0.551  0.391  1.0
  Cu  Cu1  1  0.321  0.449  0.609  1.0
  Cu  Cu2  1  0.089  0.563  0.263  1.0
  Cu  Cu3  1  0.911  0.437  0.737  1.0
  Cu  Cu4  1  0.514  0.371  0.175  1.0
  Cu  Cu5  1  0.486  0.629  0.825  1.0
  Cu  Cu6  1  0.605  0.161  0.485  1.0
  Cu  Cu7  1  0.395  0.839  0.515  1.0
  Se  Se8  1  0.162  0.187  0.470  1.0
  Se  Se9  1  0.838  0.813  0.530  1.0
  Se  Se10  1  0.948  0.282  0.120  1.0
  Se  Se11  1  0.052  0.718  0.880  1.0
  Se  Se12  1  0.402  0.796  0.163  1.0
  Se  Se13  1  0.598  0.204  0.837  1.0
  O  O14  1  0.530  0.385  0.396  1.0
  O  O15  1  0.470  0.615  0.604  1.0
  O  O16  1  0.142  0.291  0.637  1.0
  O  O17  1  0.858  0.709  0.363  1.0
  O  O18  1  0.372  0.080  0.424  1.0
  O  O19  1  0.628  0.920  0.576  1.0
  O  O20  1  0.237  0.349  0.288  1.0
  O  O21  1  0.763  0.651  0.712  1.0
  O  O22  1  0.783  0.329  0.032  1.0
  O  O23  1  0.217  0.671  0.968  1.0
  O  O24  1  0.911  0.463  0.215  1.0
  O  O25  1  0.089  0.537  0.785  1.0
  O  O26  1  0.851  0.134  0.300  1.0
  O  O27  1  0.149  0.866  0.700  1.0
  O  O28  1  0.518  0.642  0.041  1.0
  O  O29  1  0.482  0.358  0.959  1.0
  O  O30  1  0.223  0.688  0.334  1.0
  O  O31  1  0.777  0.312  0.666  1.0
  O  O32  1  0.544  0.796  0.269  1.0
  O  O33  1  0.456  0.204  0.731  1.0
[/CIF]
.
The compound described by Cu4Se3O10 crystallizes in the triclinic P-1 space group. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(10), one O(2), one O(6), and two equivalent O(1) atoms to form a mixture of distorted edge and corner-sharing CuO5 trigonal bipyramids. In the second Cu site, Cu(2) is bonded to one O(2), one O(4), one O(5), one O(6), and one O(9) atom to form a mixture of edge and corner-sharing CuO5 trigonal bipyramids. In the third Cu site, Cu(3) is bonded to one O(1), one O(4), one O(5), and two equivalent O(8) atoms to form a mixture of distorted edge and corner-sharing CuO5 square pyramids. In the fourth Cu site, Cu(4) is bonded to one O(1), one O(10), one O(7), and two equivalent O(3) atoms to form a mixture of distorted edge and corner-sharing CuO5 trigonal bipyramids. There are three inequivalent Se sites. In the first Se site, Se(1) is bonded in a distorted trigonal non-coplanar geometry to one O(2), one O(3), and one O(4) atom. In the second Se site, Se(2) is bonded in a trigonal non-coplanar geometry to one O(5), one O(6), and one O(7) atom. In the third Se site, Se(3) is bonded in a distorted trigonal non-coplanar geometry to one O(10), one O(8), and one O(9) atom. There are ten inequivalent O sites. In the first O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one Cu(1), one Cu(4), and one Se(3) atom. In the second O site, O(1) is bonded to one Cu(3), one Cu(4), and two equivalent Cu(1) atoms to form edge-sharing OCu4 tetrahedra. In the third O site, O(2) is bonded in a distorted trigonal planar geometry to one Cu(1), one Cu(2), and one Se(1) atom. In the fourth O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Cu(4) and one Se(1) atom. In the fifth O site, O(4) is bonded in a trigonal planar geometry to one Cu(2), one Cu(3), and one Se(1) atom. In the sixth O site, O(5) is bonded in a trigonal planar geometry to one Cu(2), one Cu(3), and one Se(2) atom. In the seventh O site, O(6) is bonded in a trigonal planar geometry to one Cu(1), one Cu(2), and one Se(2) atom. In the eighth O site, O(7) is bonded in a bent 120 degrees geometry to one Cu(4) and one Se(2) atom. In the ninth O site, O(8) is bonded in a trigonal planar geometry to two equivalent Cu(3) and one Se(3) atom. In the tenth O site, O(9) is bonded in a bent 120 degrees geometry to one Cu(2) and one Se(3) atom. is represented by the CIF card [CIF]
data_Cu4Se3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.978
_cell_length_b   8.166
_cell_length_c   8.369
_cell_angle_alpha   77.186
_cell_angle_beta   65.540
_cell_angle_gamma   81.472
_symmetry_Int_Tables_number   1
_cell_volume   482.931
_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
  Cu  Cu0  1  0.679  0.551  0.391  1.0
  Cu  Cu1  1  0.321  0.449  0.609  1.0
  Cu  Cu2  1  0.089  0.563  0.263  1.0
  Cu  Cu3  1  0.911  0.437  0.737  1.0
  Cu  Cu4  1  0.514  0.371  0.175  1.0
  Cu  Cu5  1  0.486  0.629  0.825  1.0
  Cu  Cu6  1  0.605  0.161  0.485  1.0
  Cu  Cu7  1  0.395  0.839  0.515  1.0
  Se  Se8  1  0.162  0.187  0.470  1.0
  Se  Se9  1  0.838  0.813  0.530  1.0
  Se  Se10  1  0.948  0.282  0.120  1.0
  Se  Se11  1  0.052  0.718  0.880  1.0
  Se  Se12  1  0.402  0.796  0.163  1.0
  Se  Se13  1  0.598  0.204  0.837  1.0
  O  O14  1  0.530  0.385  0.396  1.0
  O  O15  1  0.470  0.615  0.604  1.0
  O  O16  1  0.142  0.291  0.637  1.0
  O  O17  1  0.858  0.709  0.363  1.0
  O  O18  1  0.372  0.080  0.424  1.0
  O  O19  1  0.628  0.920  0.576  1.0
  O  O20  1  0.237  0.349  0.288  1.0
  O  O21  1  0.763  0.651  0.712  1.0
  O  O22  1  0.783  0.329  0.032  1.0
  O  O23  1  0.217  0.671  0.968  1.0
  O  O24  1  0.911  0.463  0.215  1.0
  O  O25  1  0.089  0.537  0.785  1.0
  O  O26  1  0.851  0.134  0.300  1.0
  O  O27  1  0.149  0.866  0.700  1.0
  O  O28  1  0.518  0.642  0.041  1.0
  O  O29  1  0.482  0.358  0.959  1.0
  O  O30  1  0.223  0.688  0.334  1.0
  O  O31  1  0.777  0.312  0.666  1.0
  O  O32  1  0.544  0.796  0.269  1.0
  O  O33  1  0.456  0.204  0.731  1.0
[/CIF]
.