The crystal structure described by Tm2Cu(GeO3)4 crystallizes in the triclinic P-1 space group. Tm(1) is bonded in a 7-coordinate geometry to one O(1), one O(4), one O(5), two equivalent O(3), and two equivalent O(6) atoms. Cu(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(4) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form corner-sharing GeO4 tetrahedra. In the second Ge site, Ge(2) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form corner-sharing GeO4 tetrahedra. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Tm(1), one Cu(1), and one Ge(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Ge(1) and one Ge(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Tm(1) and one Ge(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Tm(1), one Cu(1), and one Ge(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Tm(1), one Ge(1), and one Ge(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to two equivalent Tm(1) and one Ge(2) atom. is represented by the CIF card [CIF]
data_Tm2Cu(GeO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.984
_cell_length_b   7.194
_cell_length_c   7.963
_cell_angle_alpha   113.998
_cell_angle_beta   87.051
_cell_angle_gamma   102.379
_symmetry_Int_Tables_number   1
_cell_volume   254.569
_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
  Tm  Tm0  1  0.960  0.770  0.548  1.0
  Tm  Tm1  1  0.040  0.230  0.452  1.0
  Cu  Cu2  1  0.000  0.000  0.000  1.0
  Ge  Ge3  1  0.421  0.620  0.792  1.0
  Ge  Ge4  1  0.579  0.380  0.208  1.0
  Ge  Ge5  1  0.543  0.164  0.776  1.0
  Ge  Ge6  1  0.457  0.836  0.224  1.0
  O  O7  1  0.746  0.777  0.801  1.0
  O  O8  1  0.254  0.223  0.199  1.0
  O  O9  1  0.736  0.294  0.991  1.0
  O  O10  1  0.264  0.706  0.009  1.0
  O  O11  1  0.789  0.428  0.396  1.0
  O  O12  1  0.211  0.572  0.604  1.0
  O  O13  1  0.752  0.010  0.207  1.0
  O  O14  1  0.248  0.990  0.793  1.0
  O  O15  1  0.419  0.345  0.715  1.0
  O  O16  1  0.581  0.655  0.285  1.0
  O  O17  1  0.778  0.064  0.608  1.0
  O  O18  1  0.222  0.936  0.392  1.0
[/CIF]
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The crystal structure described by Tm2Cu(GeO3)4 crystallizes in the triclinic P-1 space group. Tm(1) is bonded in a 7-coordinate geometry to one O(1), one O(4), one O(5), two equivalent O(3), and two equivalent O(6) atoms. Cu(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(4) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form corner-sharing GeO4 tetrahedra. In the second Ge site, Ge(2) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form corner-sharing GeO4 tetrahedra. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Tm(1), one Cu(1), and one Ge(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Ge(1) and one Ge(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Tm(1) and one Ge(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Tm(1), one Cu(1), and one Ge(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Tm(1), one Ge(1), and one Ge(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to two equivalent Tm(1) and one Ge(2) atom. is represented by the CIF card [CIF]
data_Tm2Cu(GeO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.984
_cell_length_b   7.194
_cell_length_c   7.963
_cell_angle_alpha   113.998
_cell_angle_beta   87.051
_cell_angle_gamma   102.379
_symmetry_Int_Tables_number   1
_cell_volume   254.569
_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
  Tm  Tm0  1  0.960  0.770  0.548  1.0
  Tm  Tm1  1  0.040  0.230  0.452  1.0
  Cu  Cu2  1  0.000  0.000  0.000  1.0
  Ge  Ge3  1  0.421  0.620  0.792  1.0
  Ge  Ge4  1  0.579  0.380  0.208  1.0
  Ge  Ge5  1  0.543  0.164  0.776  1.0
  Ge  Ge6  1  0.457  0.836  0.224  1.0
  O  O7  1  0.746  0.777  0.801  1.0
  O  O8  1  0.254  0.223  0.199  1.0
  O  O9  1  0.736  0.294  0.991  1.0
  O  O10  1  0.264  0.706  0.009  1.0
  O  O11  1  0.789  0.428  0.396  1.0
  O  O12  1  0.211  0.572  0.604  1.0
  O  O13  1  0.752  0.010  0.207  1.0
  O  O14  1  0.248  0.990  0.793  1.0
  O  O15  1  0.419  0.345  0.715  1.0
  O  O16  1  0.581  0.655  0.285  1.0
  O  O17  1  0.778  0.064  0.608  1.0
  O  O18  1  0.222  0.936  0.392  1.0
[/CIF]
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