The structure described by Tm2GeO5 crystallizes in the monoclinic C2/c space group. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 7-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms. In the second Tm site, Tm(2) is bonded in a 6-coordinate geometry to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms. Ge(1) is bonded in a tetrahedral geometry to one O(2), one O(3), one O(4), and one O(5) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Tm(1) and two equivalent Tm(2) atoms to form edge-sharing OTm4 tetrahedra. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to two equivalent Tm(2) and one Ge(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Tm(2), 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 Tm(2), and one Ge(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Tm(1) and one Ge(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tm2GeO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.091
_cell_length_b   8.091
_cell_length_c   10.242
_cell_angle_alpha   61.291
_cell_angle_beta   61.291
_cell_angle_gamma   49.068
_symmetry_Int_Tables_number   1
_cell_volume   430.194
_cell_formula_units_Z   4
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  0.724  0.207  0.465  1.0
  Tm  Tm1  1  0.267  0.005  0.163  1.0
  Tm  Tm2  1  0.995  0.733  0.337  1.0
  Tm  Tm3  1  0.793  0.276  0.035  1.0
  Tm  Tm4  1  0.207  0.724  0.965  1.0
  Tm  Tm5  1  0.005  0.267  0.663  1.0
  Tm  Tm6  1  0.733  0.995  0.837  1.0
  Tm  Tm7  1  0.276  0.793  0.535  1.0
  Ge  Ge8  1  0.410  0.218  0.310  1.0
  Ge  Ge9  1  0.218  0.410  0.810  1.0
  Ge  Ge10  1  0.782  0.590  0.190  1.0
  Ge  Ge11  1  0.590  0.782  0.690  1.0
  O  O12  1  0.082  0.883  0.399  1.0
  O  O13  1  0.221  0.369  0.450  1.0
  O  O14  1  0.918  0.314  0.176  1.0
  O  O15  1  0.686  0.082  0.324  1.0
  O  O16  1  0.631  0.779  0.050  1.0
  O  O17  1  0.117  0.918  0.101  1.0
  O  O18  1  0.350  0.039  0.325  1.0
  O  O19  1  0.421  0.414  0.133  1.0
  O  O20  1  0.586  0.579  0.367  1.0
  O  O21  1  0.961  0.650  0.175  1.0
  O  O22  1  0.039  0.350  0.825  1.0
  O  O23  1  0.414  0.421  0.633  1.0
  O  O24  1  0.579  0.586  0.867  1.0
  O  O25  1  0.650  0.961  0.675  1.0
  O  O26  1  0.883  0.082  0.899  1.0
  O  O27  1  0.369  0.221  0.950  1.0
  O  O28  1  0.314  0.918  0.676  1.0
  O  O29  1  0.082  0.686  0.824  1.0
  O  O30  1  0.779  0.631  0.550  1.0
  O  O31  1  0.918  0.117  0.601  1.0
[/CIF]
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The structure described by Tm2GeO5 crystallizes in the monoclinic C2/c space group. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 7-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms. In the second Tm site, Tm(2) is bonded in a 6-coordinate geometry to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms. Ge(1) is bonded in a tetrahedral geometry to one O(2), one O(3), one O(4), and one O(5) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Tm(1) and two equivalent Tm(2) atoms to form edge-sharing OTm4 tetrahedra. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to two equivalent Tm(2) and one Ge(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Tm(2), 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 Tm(2), and one Ge(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Tm(1) and one Ge(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tm2GeO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.091
_cell_length_b   8.091
_cell_length_c   10.242
_cell_angle_alpha   61.291
_cell_angle_beta   61.291
_cell_angle_gamma   49.068
_symmetry_Int_Tables_number   1
_cell_volume   430.194
_cell_formula_units_Z   4
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  0.724  0.207  0.465  1.0
  Tm  Tm1  1  0.267  0.005  0.163  1.0
  Tm  Tm2  1  0.995  0.733  0.337  1.0
  Tm  Tm3  1  0.793  0.276  0.035  1.0
  Tm  Tm4  1  0.207  0.724  0.965  1.0
  Tm  Tm5  1  0.005  0.267  0.663  1.0
  Tm  Tm6  1  0.733  0.995  0.837  1.0
  Tm  Tm7  1  0.276  0.793  0.535  1.0
  Ge  Ge8  1  0.410  0.218  0.310  1.0
  Ge  Ge9  1  0.218  0.410  0.810  1.0
  Ge  Ge10  1  0.782  0.590  0.190  1.0
  Ge  Ge11  1  0.590  0.782  0.690  1.0
  O  O12  1  0.082  0.883  0.399  1.0
  O  O13  1  0.221  0.369  0.450  1.0
  O  O14  1  0.918  0.314  0.176  1.0
  O  O15  1  0.686  0.082  0.324  1.0
  O  O16  1  0.631  0.779  0.050  1.0
  O  O17  1  0.117  0.918  0.101  1.0
  O  O18  1  0.350  0.039  0.325  1.0
  O  O19  1  0.421  0.414  0.133  1.0
  O  O20  1  0.586  0.579  0.367  1.0
  O  O21  1  0.961  0.650  0.175  1.0
  O  O22  1  0.039  0.350  0.825  1.0
  O  O23  1  0.414  0.421  0.633  1.0
  O  O24  1  0.579  0.586  0.867  1.0
  O  O25  1  0.650  0.961  0.675  1.0
  O  O26  1  0.883  0.082  0.899  1.0
  O  O27  1  0.369  0.221  0.950  1.0
  O  O28  1  0.314  0.918  0.676  1.0
  O  O29  1  0.082  0.686  0.824  1.0
  O  O30  1  0.779  0.631  0.550  1.0
  O  O31  1  0.918  0.117  0.601  1.0
[/CIF]
.