The crystal structure described by Tm(CuO2)2 crystallizes in the monoclinic C2/c space group. Tm(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. In the second Cu site, Cu(2) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Tm(1), one Cu(1), and one Cu(2) atom to form a mixture of edge and corner-sharing OTm2Cu2 tetrahedra. In the second O site, O(2) is bonded to two equivalent Tm(1), one Cu(1), and one Cu(2) atom to form a mixture of distorted edge and corner-sharing OTm2Cu2 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tm(CuO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.539
_cell_length_b   6.127
_cell_length_c   6.127
_cell_angle_alpha   101.602
_cell_angle_beta   64.109
_cell_angle_gamma   64.109
_symmetry_Int_Tables_number   1
_cell_volume   147.257
_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
  Tm  Tm0  1  0.750  0.125  0.375  1.0
  Tm  Tm1  1  0.250  0.875  0.625  1.0
  Cu  Cu2  1  0.500  0.000  0.000  1.0
  Cu  Cu3  1  0.500  0.500  0.000  1.0
  Cu  Cu4  1  0.000  0.500  0.000  1.0
  Cu  Cu5  1  0.000  0.500  0.500  1.0
  O  O6  1  0.702  0.166  0.024  1.0
  O  O7  1  0.798  0.476  0.334  1.0
  O  O8  1  0.904  0.279  0.632  1.0
  O  O9  1  0.404  0.132  0.779  1.0
  O  O10  1  0.596  0.868  0.221  1.0
  O  O11  1  0.096  0.721  0.368  1.0
  O  O12  1  0.202  0.524  0.666  1.0
  O  O13  1  0.298  0.834  0.976  1.0
[/CIF]
.
The crystal structure described by Tm(CuO2)2 crystallizes in the monoclinic C2/c space group. Tm(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. In the second Cu site, Cu(2) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Tm(1), one Cu(1), and one Cu(2) atom to form a mixture of edge and corner-sharing OTm2Cu2 tetrahedra. In the second O site, O(2) is bonded to two equivalent Tm(1), one Cu(1), and one Cu(2) atom to form a mixture of distorted edge and corner-sharing OTm2Cu2 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tm(CuO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.539
_cell_length_b   6.127
_cell_length_c   6.127
_cell_angle_alpha   101.602
_cell_angle_beta   64.109
_cell_angle_gamma   64.109
_symmetry_Int_Tables_number   1
_cell_volume   147.257
_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
  Tm  Tm0  1  0.750  0.125  0.375  1.0
  Tm  Tm1  1  0.250  0.875  0.625  1.0
  Cu  Cu2  1  0.500  0.000  0.000  1.0
  Cu  Cu3  1  0.500  0.500  0.000  1.0
  Cu  Cu4  1  0.000  0.500  0.000  1.0
  Cu  Cu5  1  0.000  0.500  0.500  1.0
  O  O6  1  0.702  0.166  0.024  1.0
  O  O7  1  0.798  0.476  0.334  1.0
  O  O8  1  0.904  0.279  0.632  1.0
  O  O9  1  0.404  0.132  0.779  1.0
  O  O10  1  0.596  0.868  0.221  1.0
  O  O11  1  0.096  0.721  0.368  1.0
  O  O12  1  0.202  0.524  0.666  1.0
  O  O13  1  0.298  0.834  0.976  1.0
[/CIF]
.