The material described by Y2GeO5 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded to one O(1), one O(3), one O(4), two equivalent O(2), and two equivalent O(5) atoms to form distorted YO7 hexagonal pyramids that share corners with two equivalent Y(2)O7 hexagonal pyramids, corners with three equivalent Ge(1)O5 trigonal bipyramids, edges with two equivalent Y(1)O7 hexagonal pyramids, edges with three equivalent Y(2)O7 hexagonal pyramids, and edges with two equivalent Ge(1)O5 trigonal bipyramids. In the second Y site, Y(2) is bonded to one O(4), one O(5), two equivalent O(3), and three equivalent O(1) atoms to form distorted YO7 hexagonal pyramids that share corners with two equivalent Y(1)O7 hexagonal pyramids,  a cornercorner with one Ge(1)O5 trigonal bipyramid, edges with three equivalent Y(1)O7 hexagonal pyramids, edges with four equivalent Y(2)O7 hexagonal pyramids, and edges with two equivalent Ge(1)O5 trigonal bipyramids. Ge(1) is bonded to one O(2), one O(3), one O(5), and two equivalent O(4) atoms to form distorted GeO5 trigonal bipyramids that share  a cornercorner with one Y(2)O7 hexagonal pyramid, corners with three equivalent Y(1)O7 hexagonal pyramids, corners with two equivalent Ge(1)O5 trigonal bipyramids, edges with two equivalent Y(1)O7 hexagonal pyramids, and edges with two equivalent Y(2)O7 hexagonal pyramids. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Y(1) and three equivalent Y(2) atoms to form OY4 tetrahedra that share corners with two equivalent O(4)Y2Ge2 tetrahedra, corners with two equivalent O(1)Y4 tetrahedra, corners with five equivalent O(3)Y3Ge tetrahedra, corners with five equivalent O(5)Y3Ge tetrahedra,  an edgeedge with one O(4)Y2Ge2 tetrahedra,  an edgeedge with one O(3)Y3Ge tetrahedra, and edges with two equivalent O(1)Y4 tetrahedra. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Y(1) and one Ge(1) atom. In the third O site, O(3) is bonded to one Y(1), two equivalent Y(2), and one Ge(1) atom to form OY3Ge tetrahedra that share  a cornercorner with one O(4)Y2Ge2 tetrahedra,  a cornercorner with one O(5)Y3Ge tetrahedra, corners with two equivalent O(3)Y3Ge tetrahedra, corners with five equivalent O(1)Y4 tetrahedra,  an edgeedge with one O(1)Y4 tetrahedra, edges with two equivalent O(4)Y2Ge2 tetrahedra, and edges with two equivalent O(5)Y3Ge tetrahedra. In the fourth O site, O(4) is bonded to one Y(1), one Y(2), and two equivalent Ge(1) atoms to form distorted OY2Ge2 tetrahedra that share  a cornercorner with one O(3)Y3Ge tetrahedra,  a cornercorner with one O(5)Y3Ge tetrahedra, corners with two equivalent O(4)Y2Ge2 tetrahedra, corners with two equivalent O(1)Y4 tetrahedra,  an edgeedge with one O(1)Y4 tetrahedra, edges with two equivalent O(3)Y3Ge tetrahedra, and edges with two equivalent O(5)Y3Ge tetrahedra. In the fifth O site, O(5) is bonded to one Y(2), two equivalent Y(1), and one Ge(1) atom to form OY3Ge tetrahedra that share  a cornercorner with one O(4)Y2Ge2 tetrahedra,  a cornercorner with one O(3)Y3Ge tetrahedra, corners with two equivalent O(5)Y3Ge tetrahedra, corners with five equivalent O(1)Y4 tetrahedra, edges with two equivalent O(4)Y2Ge2 tetrahedra, and edges with two equivalent O(3)Y3Ge tetrahedra. is represented by the CIF file [CIF]
data_Y2GeO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.695
_cell_length_b   10.268
_cell_length_c   11.019
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   418.020
_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
  Y  Y0  1  0.250  0.108  0.219  1.0
  Y  Y1  1  0.250  0.136  0.556  1.0
  Y  Y2  1  0.750  0.364  0.056  1.0
  Y  Y3  1  0.750  0.392  0.719  1.0
  Y  Y4  1  0.250  0.608  0.281  1.0
  Y  Y5  1  0.250  0.636  0.944  1.0
  Y  Y6  1  0.750  0.864  0.444  1.0
  Y  Y7  1  0.750  0.892  0.781  1.0
  Ge  Ge8  1  0.250  0.177  0.878  1.0
  Ge  Ge9  1  0.750  0.323  0.378  1.0
  Ge  Ge10  1  0.250  0.677  0.622  1.0
  Ge  Ge11  1  0.750  0.823  0.122  1.0
  O  O12  1  0.750  0.008  0.605  1.0
  O  O13  1  0.250  0.011  0.844  1.0
  O  O14  1  0.250  0.224  0.036  1.0
  O  O15  1  0.750  0.230  0.880  1.0
  O  O16  1  0.750  0.240  0.231  1.0
  O  O17  1  0.250  0.260  0.731  1.0
  O  O18  1  0.250  0.270  0.380  1.0
  O  O19  1  0.750  0.276  0.536  1.0
  O  O20  1  0.750  0.489  0.344  1.0
  O  O21  1  0.250  0.492  0.105  1.0
  O  O22  1  0.750  0.508  0.895  1.0
  O  O23  1  0.250  0.511  0.656  1.0
  O  O24  1  0.250  0.724  0.464  1.0
  O  O25  1  0.750  0.730  0.620  1.0
  O  O26  1  0.750  0.740  0.269  1.0
  O  O27  1  0.250  0.760  0.769  1.0
  O  O28  1  0.250  0.770  0.120  1.0
  O  O29  1  0.750  0.776  0.964  1.0
  O  O30  1  0.750  0.989  0.156  1.0
  O  O31  1  0.250  0.992  0.395  1.0
[/CIF]
.
The material described by Y2GeO5 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded to one O(1), one O(3), one O(4), two equivalent O(2), and two equivalent O(5) atoms to form distorted YO7 hexagonal pyramids that share corners with two equivalent Y(2)O7 hexagonal pyramids, corners with three equivalent Ge(1)O5 trigonal bipyramids, edges with two equivalent Y(1)O7 hexagonal pyramids, edges with three equivalent Y(2)O7 hexagonal pyramids, and edges with two equivalent Ge(1)O5 trigonal bipyramids. In the second Y site, Y(2) is bonded to one O(4), one O(5), two equivalent O(3), and three equivalent O(1) atoms to form distorted YO7 hexagonal pyramids that share corners with two equivalent Y(1)O7 hexagonal pyramids,  a cornercorner with one Ge(1)O5 trigonal bipyramid, edges with three equivalent Y(1)O7 hexagonal pyramids, edges with four equivalent Y(2)O7 hexagonal pyramids, and edges with two equivalent Ge(1)O5 trigonal bipyramids. Ge(1) is bonded to one O(2), one O(3), one O(5), and two equivalent O(4) atoms to form distorted GeO5 trigonal bipyramids that share  a cornercorner with one Y(2)O7 hexagonal pyramid, corners with three equivalent Y(1)O7 hexagonal pyramids, corners with two equivalent Ge(1)O5 trigonal bipyramids, edges with two equivalent Y(1)O7 hexagonal pyramids, and edges with two equivalent Y(2)O7 hexagonal pyramids. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Y(1) and three equivalent Y(2) atoms to form OY4 tetrahedra that share corners with two equivalent O(4)Y2Ge2 tetrahedra, corners with two equivalent O(1)Y4 tetrahedra, corners with five equivalent O(3)Y3Ge tetrahedra, corners with five equivalent O(5)Y3Ge tetrahedra,  an edgeedge with one O(4)Y2Ge2 tetrahedra,  an edgeedge with one O(3)Y3Ge tetrahedra, and edges with two equivalent O(1)Y4 tetrahedra. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Y(1) and one Ge(1) atom. In the third O site, O(3) is bonded to one Y(1), two equivalent Y(2), and one Ge(1) atom to form OY3Ge tetrahedra that share  a cornercorner with one O(4)Y2Ge2 tetrahedra,  a cornercorner with one O(5)Y3Ge tetrahedra, corners with two equivalent O(3)Y3Ge tetrahedra, corners with five equivalent O(1)Y4 tetrahedra,  an edgeedge with one O(1)Y4 tetrahedra, edges with two equivalent O(4)Y2Ge2 tetrahedra, and edges with two equivalent O(5)Y3Ge tetrahedra. In the fourth O site, O(4) is bonded to one Y(1), one Y(2), and two equivalent Ge(1) atoms to form distorted OY2Ge2 tetrahedra that share  a cornercorner with one O(3)Y3Ge tetrahedra,  a cornercorner with one O(5)Y3Ge tetrahedra, corners with two equivalent O(4)Y2Ge2 tetrahedra, corners with two equivalent O(1)Y4 tetrahedra,  an edgeedge with one O(1)Y4 tetrahedra, edges with two equivalent O(3)Y3Ge tetrahedra, and edges with two equivalent O(5)Y3Ge tetrahedra. In the fifth O site, O(5) is bonded to one Y(2), two equivalent Y(1), and one Ge(1) atom to form OY3Ge tetrahedra that share  a cornercorner with one O(4)Y2Ge2 tetrahedra,  a cornercorner with one O(3)Y3Ge tetrahedra, corners with two equivalent O(5)Y3Ge tetrahedra, corners with five equivalent O(1)Y4 tetrahedra, edges with two equivalent O(4)Y2Ge2 tetrahedra, and edges with two equivalent O(3)Y3Ge tetrahedra. is represented by the CIF file [CIF]
data_Y2GeO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.695
_cell_length_b   10.268
_cell_length_c   11.019
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   418.020
_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
  Y  Y0  1  0.250  0.108  0.219  1.0
  Y  Y1  1  0.250  0.136  0.556  1.0
  Y  Y2  1  0.750  0.364  0.056  1.0
  Y  Y3  1  0.750  0.392  0.719  1.0
  Y  Y4  1  0.250  0.608  0.281  1.0
  Y  Y5  1  0.250  0.636  0.944  1.0
  Y  Y6  1  0.750  0.864  0.444  1.0
  Y  Y7  1  0.750  0.892  0.781  1.0
  Ge  Ge8  1  0.250  0.177  0.878  1.0
  Ge  Ge9  1  0.750  0.323  0.378  1.0
  Ge  Ge10  1  0.250  0.677  0.622  1.0
  Ge  Ge11  1  0.750  0.823  0.122  1.0
  O  O12  1  0.750  0.008  0.605  1.0
  O  O13  1  0.250  0.011  0.844  1.0
  O  O14  1  0.250  0.224  0.036  1.0
  O  O15  1  0.750  0.230  0.880  1.0
  O  O16  1  0.750  0.240  0.231  1.0
  O  O17  1  0.250  0.260  0.731  1.0
  O  O18  1  0.250  0.270  0.380  1.0
  O  O19  1  0.750  0.276  0.536  1.0
  O  O20  1  0.750  0.489  0.344  1.0
  O  O21  1  0.250  0.492  0.105  1.0
  O  O22  1  0.750  0.508  0.895  1.0
  O  O23  1  0.250  0.511  0.656  1.0
  O  O24  1  0.250  0.724  0.464  1.0
  O  O25  1  0.750  0.730  0.620  1.0
  O  O26  1  0.750  0.740  0.269  1.0
  O  O27  1  0.250  0.760  0.769  1.0
  O  O28  1  0.250  0.770  0.120  1.0
  O  O29  1  0.750  0.776  0.964  1.0
  O  O30  1  0.750  0.989  0.156  1.0
  O  O31  1  0.250  0.992  0.395  1.0
[/CIF]
.