The compound described by Y2GeO5 is Baddeleyite-derived structured and crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded to one O(4), two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form YO7 pentagonal bipyramids that share  a cornercorner with one Y(2)O7 pentagonal bipyramid, corners with four equivalent Ge(1)O4 tetrahedra, edges with two equivalent Y(2)O7 pentagonal bipyramids, edges with three equivalent Y(1)O7 pentagonal bipyramids, and  an edgeedge with one Ge(1)O4 tetrahedra. In the second Y site, Y(2) is bonded to one O(3), three equivalent O(4), and three equivalent O(5) atoms to form distorted YO7 pentagonal bipyramids that share  a cornercorner with one Y(1)O7 pentagonal bipyramid, corners with two equivalent Ge(1)O4 tetrahedra, edges with two equivalent Y(1)O7 pentagonal bipyramids, edges with six equivalent Y(2)O7 pentagonal bipyramids, and  an edgeedge with one Ge(1)O4 tetrahedra. Ge(1) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form GeO4 tetrahedra that share corners with two equivalent Y(2)O7 pentagonal bipyramids, corners with four equivalent Y(1)O7 pentagonal bipyramids,  an edgeedge with one Y(1)O7 pentagonal bipyramid, and  an edgeedge with one Y(2)O7 pentagonal bipyramid. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Y(1) and one Ge(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Y(1) and one Ge(1) atom. In the third O site, O(3) is bonded to one Y(2), two equivalent Y(1), and one Ge(1) atom to form distorted OY3Ge trigonal pyramids that share  a cornercorner with one O(4)Y4 tetrahedra, corners with two equivalent O(3)Y3Ge trigonal pyramids, corners with two equivalent O(5)Y3Ge trigonal pyramids, edges with two equivalent O(4)Y4 tetrahedra, and  an edgeedge with one O(5)Y3Ge trigonal pyramid. In the fourth O site, O(4) is bonded to one Y(1) and three equivalent Y(2) atoms to form OY4 tetrahedra that share corners with four equivalent O(4)Y4 tetrahedra,  a cornercorner with one O(3)Y3Ge trigonal pyramid, corners with five equivalent O(5)Y3Ge trigonal pyramids,  an edgeedge with one O(4)Y4 tetrahedra, edges with two equivalent O(3)Y3Ge trigonal pyramids, and edges with two equivalent O(5)Y3Ge trigonal pyramids. In the fifth O site, O(5) is bonded to three equivalent Y(2) and one Ge(1) atom to form distorted OY3Ge trigonal pyramids that share corners with five equivalent O(4)Y4 tetrahedra, corners with two equivalent O(3)Y3Ge trigonal pyramids, corners with four equivalent O(5)Y3Ge trigonal pyramids, edges with two equivalent O(4)Y4 tetrahedra,  an edgeedge with one O(3)Y3Ge trigonal pyramid, and  an edgeedge with one O(5)Y3Ge trigonal pyramid. is represented by the CIF file [CIF]
data_Y2GeO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.923
_cell_length_b   6.762
_cell_length_c   9.318
_cell_angle_alpha   80.694
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   430.436
_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  0.642  0.988  0.151  1.0
  Y  Y1  1  0.858  0.488  0.151  1.0
  Y  Y2  1  0.620  0.230  0.470  1.0
  Y  Y3  1  0.120  0.270  0.530  1.0
  Y  Y4  1  0.880  0.730  0.470  1.0
  Y  Y5  1  0.380  0.770  0.530  1.0
  Y  Y6  1  0.142  0.512  0.849  1.0
  Y  Y7  1  0.358  0.012  0.849  1.0
  Ge  Ge8  1  0.101  0.989  0.200  1.0
  Ge  Ge9  1  0.399  0.489  0.200  1.0
  Ge  Ge10  1  0.601  0.511  0.800  1.0
  Ge  Ge11  1  0.899  0.011  0.800  1.0
  O  O12  1  0.310  0.990  0.099  1.0
  O  O13  1  0.928  0.170  0.136  1.0
  O  O14  1  0.190  0.490  0.099  1.0
  O  O15  1  0.567  0.285  0.219  1.0
  O  O16  1  0.572  0.670  0.136  1.0
  O  O17  1  0.933  0.785  0.219  1.0
  O  O18  1  0.880  0.417  0.395  1.0
  O  O19  1  0.354  0.475  0.391  1.0
  O  O20  1  0.620  0.917  0.395  1.0
  O  O21  1  0.146  0.975  0.391  1.0
  O  O22  1  0.854  0.025  0.609  1.0
  O  O23  1  0.380  0.083  0.605  1.0
  O  O24  1  0.646  0.525  0.609  1.0
  O  O25  1  0.120  0.583  0.605  1.0
  O  O26  1  0.067  0.215  0.781  1.0
  O  O27  1  0.428  0.330  0.864  1.0
  O  O28  1  0.433  0.715  0.781  1.0
  O  O29  1  0.810  0.510  0.901  1.0
  O  O30  1  0.072  0.830  0.864  1.0
  O  O31  1  0.690  0.010  0.901  1.0
[/CIF]
.
The compound described by Y2GeO5 is Baddeleyite-derived structured and crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded to one O(4), two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form YO7 pentagonal bipyramids that share  a cornercorner with one Y(2)O7 pentagonal bipyramid, corners with four equivalent Ge(1)O4 tetrahedra, edges with two equivalent Y(2)O7 pentagonal bipyramids, edges with three equivalent Y(1)O7 pentagonal bipyramids, and  an edgeedge with one Ge(1)O4 tetrahedra. In the second Y site, Y(2) is bonded to one O(3), three equivalent O(4), and three equivalent O(5) atoms to form distorted YO7 pentagonal bipyramids that share  a cornercorner with one Y(1)O7 pentagonal bipyramid, corners with two equivalent Ge(1)O4 tetrahedra, edges with two equivalent Y(1)O7 pentagonal bipyramids, edges with six equivalent Y(2)O7 pentagonal bipyramids, and  an edgeedge with one Ge(1)O4 tetrahedra. Ge(1) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form GeO4 tetrahedra that share corners with two equivalent Y(2)O7 pentagonal bipyramids, corners with four equivalent Y(1)O7 pentagonal bipyramids,  an edgeedge with one Y(1)O7 pentagonal bipyramid, and  an edgeedge with one Y(2)O7 pentagonal bipyramid. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Y(1) and one Ge(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Y(1) and one Ge(1) atom. In the third O site, O(3) is bonded to one Y(2), two equivalent Y(1), and one Ge(1) atom to form distorted OY3Ge trigonal pyramids that share  a cornercorner with one O(4)Y4 tetrahedra, corners with two equivalent O(3)Y3Ge trigonal pyramids, corners with two equivalent O(5)Y3Ge trigonal pyramids, edges with two equivalent O(4)Y4 tetrahedra, and  an edgeedge with one O(5)Y3Ge trigonal pyramid. In the fourth O site, O(4) is bonded to one Y(1) and three equivalent Y(2) atoms to form OY4 tetrahedra that share corners with four equivalent O(4)Y4 tetrahedra,  a cornercorner with one O(3)Y3Ge trigonal pyramid, corners with five equivalent O(5)Y3Ge trigonal pyramids,  an edgeedge with one O(4)Y4 tetrahedra, edges with two equivalent O(3)Y3Ge trigonal pyramids, and edges with two equivalent O(5)Y3Ge trigonal pyramids. In the fifth O site, O(5) is bonded to three equivalent Y(2) and one Ge(1) atom to form distorted OY3Ge trigonal pyramids that share corners with five equivalent O(4)Y4 tetrahedra, corners with two equivalent O(3)Y3Ge trigonal pyramids, corners with four equivalent O(5)Y3Ge trigonal pyramids, edges with two equivalent O(4)Y4 tetrahedra,  an edgeedge with one O(3)Y3Ge trigonal pyramid, and  an edgeedge with one O(5)Y3Ge trigonal pyramid. is represented by the CIF file [CIF]
data_Y2GeO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.923
_cell_length_b   6.762
_cell_length_c   9.318
_cell_angle_alpha   80.694
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   430.436
_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  0.642  0.988  0.151  1.0
  Y  Y1  1  0.858  0.488  0.151  1.0
  Y  Y2  1  0.620  0.230  0.470  1.0
  Y  Y3  1  0.120  0.270  0.530  1.0
  Y  Y4  1  0.880  0.730  0.470  1.0
  Y  Y5  1  0.380  0.770  0.530  1.0
  Y  Y6  1  0.142  0.512  0.849  1.0
  Y  Y7  1  0.358  0.012  0.849  1.0
  Ge  Ge8  1  0.101  0.989  0.200  1.0
  Ge  Ge9  1  0.399  0.489  0.200  1.0
  Ge  Ge10  1  0.601  0.511  0.800  1.0
  Ge  Ge11  1  0.899  0.011  0.800  1.0
  O  O12  1  0.310  0.990  0.099  1.0
  O  O13  1  0.928  0.170  0.136  1.0
  O  O14  1  0.190  0.490  0.099  1.0
  O  O15  1  0.567  0.285  0.219  1.0
  O  O16  1  0.572  0.670  0.136  1.0
  O  O17  1  0.933  0.785  0.219  1.0
  O  O18  1  0.880  0.417  0.395  1.0
  O  O19  1  0.354  0.475  0.391  1.0
  O  O20  1  0.620  0.917  0.395  1.0
  O  O21  1  0.146  0.975  0.391  1.0
  O  O22  1  0.854  0.025  0.609  1.0
  O  O23  1  0.380  0.083  0.605  1.0
  O  O24  1  0.646  0.525  0.609  1.0
  O  O25  1  0.120  0.583  0.605  1.0
  O  O26  1  0.067  0.215  0.781  1.0
  O  O27  1  0.428  0.330  0.864  1.0
  O  O28  1  0.433  0.715  0.781  1.0
  O  O29  1  0.810  0.510  0.901  1.0
  O  O30  1  0.072  0.830  0.864  1.0
  O  O31  1  0.690  0.010  0.901  1.0
[/CIF]
.