The material structure described by Tm2GeO5 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded to one O(1), one O(3), one O(5), two equivalent O(2), and two equivalent O(4) atoms to form distorted TmO7 hexagonal pyramids that share corners with two equivalent Tm(2)O7 hexagonal pyramids, corners with three equivalent Ge(1)O5 trigonal bipyramids, edges with two equivalent Tm(1)O7 hexagonal pyramids, edges with three equivalent Tm(2)O7 hexagonal pyramids, and edges with two equivalent Ge(1)O5 trigonal bipyramids. In the second Tm site, Tm(2) is bonded to one O(3), one O(4), two equivalent O(5), and three equivalent O(1) atoms to form distorted TmO7 hexagonal pyramids that share corners with two equivalent Tm(1)O7 hexagonal pyramids,  a cornercorner with one Ge(1)O5 trigonal bipyramid, edges with three equivalent Tm(1)O7 hexagonal pyramids, edges with four equivalent Tm(2)O7 hexagonal pyramids, and edges with two equivalent Ge(1)O5 trigonal bipyramids. Ge(1) is bonded to one O(2), one O(4), one O(5), and two equivalent O(3) atoms to form distorted GeO5 trigonal bipyramids that share  a cornercorner with one Tm(2)O7 hexagonal pyramid, corners with three equivalent Tm(1)O7 hexagonal pyramids, corners with two equivalent Ge(1)O5 trigonal bipyramids, edges with two equivalent Tm(1)O7 hexagonal pyramids, and edges with two equivalent Tm(2)O7 hexagonal pyramids. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Tm(1) and three equivalent Tm(2) atoms to form OTm4 tetrahedra that share corners with two equivalent O(3)Tm2Ge2 tetrahedra, corners with two equivalent O(1)Tm4 tetrahedra, corners with five equivalent O(4)Tm3Ge tetrahedra, corners with five equivalent O(5)Tm3Ge tetrahedra,  an edgeedge with one O(3)Tm2Ge2 tetrahedra,  an edgeedge with one O(5)Tm3Ge tetrahedra, and edges with two equivalent O(1)Tm4 tetrahedra. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Tm(1) and one Ge(1) atom. In the third O site, O(3) is bonded to one Tm(1), one Tm(2), and two equivalent Ge(1) atoms to form distorted OTm2Ge2 tetrahedra that share  a cornercorner with one O(4)Tm3Ge tetrahedra,  a cornercorner with one O(5)Tm3Ge tetrahedra, corners with two equivalent O(3)Tm2Ge2 tetrahedra, corners with two equivalent O(1)Tm4 tetrahedra,  an edgeedge with one O(1)Tm4 tetrahedra, edges with two equivalent O(4)Tm3Ge tetrahedra, and edges with two equivalent O(5)Tm3Ge tetrahedra. In the fourth O site, O(4) is bonded to one Tm(2), two equivalent Tm(1), and one Ge(1) atom to form OTm3Ge tetrahedra that share  a cornercorner with one O(3)Tm2Ge2 tetrahedra,  a cornercorner with one O(5)Tm3Ge tetrahedra, corners with two equivalent O(4)Tm3Ge tetrahedra, corners with five equivalent O(1)Tm4 tetrahedra, edges with two equivalent O(3)Tm2Ge2 tetrahedra, and edges with two equivalent O(5)Tm3Ge tetrahedra. In the fifth O site, O(5) is bonded to one Tm(1), two equivalent Tm(2), and one Ge(1) atom to form OTm3Ge tetrahedra that share  a cornercorner with one O(3)Tm2Ge2 tetrahedra,  a cornercorner with one O(4)Tm3Ge tetrahedra, corners with two equivalent O(5)Tm3Ge tetrahedra, corners with five equivalent O(1)Tm4 tetrahedra,  an edgeedge with one O(1)Tm4 tetrahedra, edges with two equivalent O(3)Tm2Ge2 tetrahedra, and edges with two equivalent O(4)Tm3Ge tetrahedra. is represented by the CIF card [CIF]
data_Tm2GeO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.626
_cell_length_b   10.097
_cell_length_c   10.918
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   399.751
_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  0.250  0.111  0.779  1.0
  Tm  Tm1  1  0.250  0.136  0.444  1.0
  Tm  Tm2  1  0.750  0.364  0.944  1.0
  Tm  Tm3  1  0.750  0.389  0.279  1.0
  Tm  Tm4  1  0.250  0.611  0.721  1.0
  Tm  Tm5  1  0.250  0.636  0.056  1.0
  Tm  Tm6  1  0.750  0.864  0.556  1.0
  Tm  Tm7  1  0.750  0.889  0.221  1.0
  Ge  Ge8  1  0.250  0.175  0.121  1.0
  Ge  Ge9  1  0.750  0.325  0.621  1.0
  Ge  Ge10  1  0.250  0.675  0.379  1.0
  Ge  Ge11  1  0.750  0.825  0.879  1.0
  O  O12  1  0.250  0.992  0.605  1.0
  O  O13  1  0.250  0.006  0.155  1.0
  O  O14  1  0.750  0.233  0.118  1.0
  O  O15  1  0.750  0.243  0.770  1.0
  O  O16  1  0.250  0.224  0.961  1.0
  O  O17  1  0.750  0.276  0.461  1.0
  O  O18  1  0.250  0.257  0.270  1.0
  O  O19  1  0.250  0.267  0.618  1.0
  O  O20  1  0.750  0.494  0.655  1.0
  O  O21  1  0.750  0.508  0.105  1.0
  O  O22  1  0.250  0.492  0.895  1.0
  O  O23  1  0.250  0.506  0.345  1.0
  O  O24  1  0.750  0.733  0.382  1.0
  O  O25  1  0.750  0.743  0.730  1.0
  O  O26  1  0.250  0.724  0.539  1.0
  O  O27  1  0.750  0.776  0.039  1.0
  O  O28  1  0.250  0.757  0.230  1.0
  O  O29  1  0.250  0.767  0.882  1.0
  O  O30  1  0.750  0.994  0.845  1.0
  O  O31  1  0.750  0.008  0.395  1.0
[/CIF]
.
The material structure described by Tm2GeO5 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded to one O(1), one O(3), one O(5), two equivalent O(2), and two equivalent O(4) atoms to form distorted TmO7 hexagonal pyramids that share corners with two equivalent Tm(2)O7 hexagonal pyramids, corners with three equivalent Ge(1)O5 trigonal bipyramids, edges with two equivalent Tm(1)O7 hexagonal pyramids, edges with three equivalent Tm(2)O7 hexagonal pyramids, and edges with two equivalent Ge(1)O5 trigonal bipyramids. In the second Tm site, Tm(2) is bonded to one O(3), one O(4), two equivalent O(5), and three equivalent O(1) atoms to form distorted TmO7 hexagonal pyramids that share corners with two equivalent Tm(1)O7 hexagonal pyramids,  a cornercorner with one Ge(1)O5 trigonal bipyramid, edges with three equivalent Tm(1)O7 hexagonal pyramids, edges with four equivalent Tm(2)O7 hexagonal pyramids, and edges with two equivalent Ge(1)O5 trigonal bipyramids. Ge(1) is bonded to one O(2), one O(4), one O(5), and two equivalent O(3) atoms to form distorted GeO5 trigonal bipyramids that share  a cornercorner with one Tm(2)O7 hexagonal pyramid, corners with three equivalent Tm(1)O7 hexagonal pyramids, corners with two equivalent Ge(1)O5 trigonal bipyramids, edges with two equivalent Tm(1)O7 hexagonal pyramids, and edges with two equivalent Tm(2)O7 hexagonal pyramids. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Tm(1) and three equivalent Tm(2) atoms to form OTm4 tetrahedra that share corners with two equivalent O(3)Tm2Ge2 tetrahedra, corners with two equivalent O(1)Tm4 tetrahedra, corners with five equivalent O(4)Tm3Ge tetrahedra, corners with five equivalent O(5)Tm3Ge tetrahedra,  an edgeedge with one O(3)Tm2Ge2 tetrahedra,  an edgeedge with one O(5)Tm3Ge tetrahedra, and edges with two equivalent O(1)Tm4 tetrahedra. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Tm(1) and one Ge(1) atom. In the third O site, O(3) is bonded to one Tm(1), one Tm(2), and two equivalent Ge(1) atoms to form distorted OTm2Ge2 tetrahedra that share  a cornercorner with one O(4)Tm3Ge tetrahedra,  a cornercorner with one O(5)Tm3Ge tetrahedra, corners with two equivalent O(3)Tm2Ge2 tetrahedra, corners with two equivalent O(1)Tm4 tetrahedra,  an edgeedge with one O(1)Tm4 tetrahedra, edges with two equivalent O(4)Tm3Ge tetrahedra, and edges with two equivalent O(5)Tm3Ge tetrahedra. In the fourth O site, O(4) is bonded to one Tm(2), two equivalent Tm(1), and one Ge(1) atom to form OTm3Ge tetrahedra that share  a cornercorner with one O(3)Tm2Ge2 tetrahedra,  a cornercorner with one O(5)Tm3Ge tetrahedra, corners with two equivalent O(4)Tm3Ge tetrahedra, corners with five equivalent O(1)Tm4 tetrahedra, edges with two equivalent O(3)Tm2Ge2 tetrahedra, and edges with two equivalent O(5)Tm3Ge tetrahedra. In the fifth O site, O(5) is bonded to one Tm(1), two equivalent Tm(2), and one Ge(1) atom to form OTm3Ge tetrahedra that share  a cornercorner with one O(3)Tm2Ge2 tetrahedra,  a cornercorner with one O(4)Tm3Ge tetrahedra, corners with two equivalent O(5)Tm3Ge tetrahedra, corners with five equivalent O(1)Tm4 tetrahedra,  an edgeedge with one O(1)Tm4 tetrahedra, edges with two equivalent O(3)Tm2Ge2 tetrahedra, and edges with two equivalent O(4)Tm3Ge tetrahedra. is represented by the CIF card [CIF]
data_Tm2GeO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.626
_cell_length_b   10.097
_cell_length_c   10.918
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   399.751
_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  0.250  0.111  0.779  1.0
  Tm  Tm1  1  0.250  0.136  0.444  1.0
  Tm  Tm2  1  0.750  0.364  0.944  1.0
  Tm  Tm3  1  0.750  0.389  0.279  1.0
  Tm  Tm4  1  0.250  0.611  0.721  1.0
  Tm  Tm5  1  0.250  0.636  0.056  1.0
  Tm  Tm6  1  0.750  0.864  0.556  1.0
  Tm  Tm7  1  0.750  0.889  0.221  1.0
  Ge  Ge8  1  0.250  0.175  0.121  1.0
  Ge  Ge9  1  0.750  0.325  0.621  1.0
  Ge  Ge10  1  0.250  0.675  0.379  1.0
  Ge  Ge11  1  0.750  0.825  0.879  1.0
  O  O12  1  0.250  0.992  0.605  1.0
  O  O13  1  0.250  0.006  0.155  1.0
  O  O14  1  0.750  0.233  0.118  1.0
  O  O15  1  0.750  0.243  0.770  1.0
  O  O16  1  0.250  0.224  0.961  1.0
  O  O17  1  0.750  0.276  0.461  1.0
  O  O18  1  0.250  0.257  0.270  1.0
  O  O19  1  0.250  0.267  0.618  1.0
  O  O20  1  0.750  0.494  0.655  1.0
  O  O21  1  0.750  0.508  0.105  1.0
  O  O22  1  0.250  0.492  0.895  1.0
  O  O23  1  0.250  0.506  0.345  1.0
  O  O24  1  0.750  0.733  0.382  1.0
  O  O25  1  0.750  0.743  0.730  1.0
  O  O26  1  0.250  0.724  0.539  1.0
  O  O27  1  0.750  0.776  0.039  1.0
  O  O28  1  0.250  0.757  0.230  1.0
  O  O29  1  0.250  0.767  0.882  1.0
  O  O30  1  0.750  0.994  0.845  1.0
  O  O31  1  0.750  0.008  0.395  1.0
[/CIF]
.