The material described by K2Cu(SO7)2 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and two equivalent O(7) atoms. Cu(1) is bonded in an octahedral geometry to two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms. S(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(4), and one O(7) atom. There are seven inequivalent O sites. In the first O site, O(7) is bonded in a distorted single-bond geometry to two equivalent K(1) and one S(1) atom. In the second O site, O(1) is bonded in a distorted bent 120 degrees geometry to one K(1) and one S(1) atom. In the third O site, O(2) is bonded in a distorted single-bond geometry to one K(1) and one S(1) atom. In the fourth O site, O(3) is bonded in a 3-coordinate geometry to one K(1), one Cu(1), and one O(5) atom. In the fifth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one K(1), one S(1), and one O(6) atom. In the sixth O site, O(5) is bonded in a 3-coordinate geometry to one K(1), one Cu(1), and one O(3) atom. In the seventh O site, O(6) is bonded in a bent 120 degrees geometry to one Cu(1) and one O(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2Cu(SO7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.350
_cell_length_b   7.591
_cell_length_c   13.448
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   102.587
_symmetry_Int_Tables_number   1
_cell_volume   632.655
_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
  K  K0  1  0.850  0.629  0.155  1.0
  K  K1  1  0.150  0.371  0.845  1.0
  K  K2  1  0.150  0.871  0.655  1.0
  K  K3  1  0.850  0.129  0.345  1.0
  Cu  Cu4  1  0.500  0.000  0.000  1.0
  Cu  Cu5  1  0.500  0.500  0.500  1.0
  S  S6  1  0.742  0.592  0.855  1.0
  S  S7  1  0.258  0.408  0.145  1.0
  S  S8  1  0.258  0.908  0.355  1.0
  S  S9  1  0.742  0.092  0.645  1.0
  O  O10  1  0.537  0.624  0.824  1.0
  O  O11  1  0.463  0.376  0.176  1.0
  O  O12  1  0.463  0.876  0.324  1.0
  O  O13  1  0.537  0.124  0.676  1.0
  O  O14  1  0.741  0.939  0.579  1.0
  O  O15  1  0.259  0.061  0.421  1.0
  O  O16  1  0.259  0.561  0.079  1.0
  O  O17  1  0.741  0.439  0.921  1.0
  O  O18  1  0.319  0.909  0.879  1.0
  O  O19  1  0.681  0.091  0.121  1.0
  O  O20  1  0.681  0.591  0.379  1.0
  O  O21  1  0.319  0.409  0.621  1.0
  O  O22  1  0.839  0.772  0.944  1.0
  O  O23  1  0.161  0.228  0.056  1.0
  O  O24  1  0.161  0.728  0.444  1.0
  O  O25  1  0.839  0.272  0.556  1.0
  O  O26  1  0.369  0.587  0.620  1.0
  O  O27  1  0.631  0.413  0.380  1.0
  O  O28  1  0.631  0.913  0.120  1.0
  O  O29  1  0.369  0.087  0.880  1.0
  O  O30  1  0.771  0.924  0.923  1.0
  O  O31  1  0.229  0.076  0.077  1.0
  O  O32  1  0.229  0.576  0.423  1.0
  O  O33  1  0.771  0.424  0.577  1.0
  O  O34  1  0.913  0.620  0.781  1.0
  O  O35  1  0.087  0.380  0.219  1.0
  O  O36  1  0.087  0.880  0.281  1.0
  O  O37  1  0.913  0.120  0.719  1.0
[/CIF]
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The material described by K2Cu(SO7)2 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and two equivalent O(7) atoms. Cu(1) is bonded in an octahedral geometry to two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms. S(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(4), and one O(7) atom. There are seven inequivalent O sites. In the first O site, O(7) is bonded in a distorted single-bond geometry to two equivalent K(1) and one S(1) atom. In the second O site, O(1) is bonded in a distorted bent 120 degrees geometry to one K(1) and one S(1) atom. In the third O site, O(2) is bonded in a distorted single-bond geometry to one K(1) and one S(1) atom. In the fourth O site, O(3) is bonded in a 3-coordinate geometry to one K(1), one Cu(1), and one O(5) atom. In the fifth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one K(1), one S(1), and one O(6) atom. In the sixth O site, O(5) is bonded in a 3-coordinate geometry to one K(1), one Cu(1), and one O(3) atom. In the seventh O site, O(6) is bonded in a bent 120 degrees geometry to one Cu(1) and one O(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2Cu(SO7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.350
_cell_length_b   7.591
_cell_length_c   13.448
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   102.587
_symmetry_Int_Tables_number   1
_cell_volume   632.655
_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
  K  K0  1  0.850  0.629  0.155  1.0
  K  K1  1  0.150  0.371  0.845  1.0
  K  K2  1  0.150  0.871  0.655  1.0
  K  K3  1  0.850  0.129  0.345  1.0
  Cu  Cu4  1  0.500  0.000  0.000  1.0
  Cu  Cu5  1  0.500  0.500  0.500  1.0
  S  S6  1  0.742  0.592  0.855  1.0
  S  S7  1  0.258  0.408  0.145  1.0
  S  S8  1  0.258  0.908  0.355  1.0
  S  S9  1  0.742  0.092  0.645  1.0
  O  O10  1  0.537  0.624  0.824  1.0
  O  O11  1  0.463  0.376  0.176  1.0
  O  O12  1  0.463  0.876  0.324  1.0
  O  O13  1  0.537  0.124  0.676  1.0
  O  O14  1  0.741  0.939  0.579  1.0
  O  O15  1  0.259  0.061  0.421  1.0
  O  O16  1  0.259  0.561  0.079  1.0
  O  O17  1  0.741  0.439  0.921  1.0
  O  O18  1  0.319  0.909  0.879  1.0
  O  O19  1  0.681  0.091  0.121  1.0
  O  O20  1  0.681  0.591  0.379  1.0
  O  O21  1  0.319  0.409  0.621  1.0
  O  O22  1  0.839  0.772  0.944  1.0
  O  O23  1  0.161  0.228  0.056  1.0
  O  O24  1  0.161  0.728  0.444  1.0
  O  O25  1  0.839  0.272  0.556  1.0
  O  O26  1  0.369  0.587  0.620  1.0
  O  O27  1  0.631  0.413  0.380  1.0
  O  O28  1  0.631  0.913  0.120  1.0
  O  O29  1  0.369  0.087  0.880  1.0
  O  O30  1  0.771  0.924  0.923  1.0
  O  O31  1  0.229  0.076  0.077  1.0
  O  O32  1  0.229  0.576  0.423  1.0
  O  O33  1  0.771  0.424  0.577  1.0
  O  O34  1  0.913  0.620  0.781  1.0
  O  O35  1  0.087  0.380  0.219  1.0
  O  O36  1  0.087  0.880  0.281  1.0
  O  O37  1  0.913  0.120  0.719  1.0
[/CIF]
.