The material structure described by La2GeO5 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(5), three equivalent O(1), and three equivalent O(4) atoms. In the second La site, La(2) is bonded to one O(5), three equivalent O(2), and three equivalent O(3) atoms to form distorted LaO7 hexagonal pyramids that share corners with two equivalent Ge(1)O4 tetrahedra, edges with six equivalent La(2)O7 hexagonal pyramids, and  an edgeedge with one Ge(1)O4 tetrahedra. Ge(1) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form GeO4 tetrahedra that share corners with two equivalent La(2)O7 hexagonal pyramids and  an edgeedge with one La(2)O7 hexagonal pyramid. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to three equivalent La(1) and one Ge(1) atom. In the second O site, O(2) is bonded to three equivalent La(2) and one Ge(1) atom to form distorted OLa3Ge tetrahedra that share corners with two equivalent O(5)La3Ge tetrahedra, corners with four equivalent O(2)La3Ge tetrahedra, corners with five equivalent O(3)La4 tetrahedra,  an edgeedge with one O(2)La3Ge tetrahedra,  an edgeedge with one O(5)La3Ge tetrahedra, and edges with two equivalent O(3)La4 tetrahedra. In the third O site, O(3) is bonded to one La(1) and three equivalent La(2) atoms to form OLa4 tetrahedra that share  a cornercorner with one O(5)La3Ge tetrahedra, corners with four equivalent O(3)La4 tetrahedra, corners with five equivalent O(2)La3Ge tetrahedra,  an edgeedge with one O(3)La4 tetrahedra, edges with two equivalent O(2)La3Ge tetrahedra, and edges with two equivalent O(5)La3Ge tetrahedra. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to three equivalent La(1) and one Ge(1) atom. In the fifth O site, O(5) is bonded to one La(2), two equivalent La(1), and one Ge(1) atom to form distorted OLa3Ge tetrahedra that share  a cornercorner with one O(3)La4 tetrahedra, corners with two equivalent O(2)La3Ge tetrahedra, corners with two equivalent O(5)La3Ge tetrahedra,  an edgeedge with one O(2)La3Ge tetrahedra, and edges with two equivalent O(3)La4 tetrahedra. is represented by the CIF card [CIF]
data_La2GeO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.473
_cell_length_b   7.101
_cell_length_c   9.608
_cell_angle_alpha   72.590
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   486.509
_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
  La  La0  1  0.355  0.916  0.382  1.0
  La  La1  1  0.145  0.416  0.382  1.0
  La  La2  1  0.625  0.235  0.978  1.0
  La  La3  1  0.645  0.084  0.618  1.0
  La  La4  1  0.875  0.735  0.978  1.0
  La  La5  1  0.375  0.765  0.022  1.0
  La  La6  1  0.855  0.584  0.618  1.0
  La  La7  1  0.125  0.265  0.022  1.0
  Ge  Ge8  1  0.588  0.460  0.298  1.0
  Ge  Ge9  1  0.912  0.960  0.298  1.0
  Ge  Ge10  1  0.088  0.040  0.702  1.0
  Ge  Ge11  1  0.412  0.540  0.702  1.0
  O  O12  1  0.227  0.553  0.592  1.0
  O  O13  1  0.862  0.010  0.110  1.0
  O  O14  1  0.138  0.990  0.890  1.0
  O  O15  1  0.879  0.449  0.886  1.0
  O  O16  1  0.773  0.447  0.408  1.0
  O  O17  1  0.638  0.510  0.110  1.0
  O  O18  1  0.955  0.250  0.631  1.0
  O  O19  1  0.121  0.551  0.114  1.0
  O  O20  1  0.455  0.250  0.369  1.0
  O  O21  1  0.076  0.144  0.291  1.0
  O  O22  1  0.727  0.947  0.408  1.0
  O  O23  1  0.621  0.949  0.886  1.0
  O  O24  1  0.545  0.750  0.631  1.0
  O  O25  1  0.273  0.053  0.592  1.0
  O  O26  1  0.045  0.750  0.369  1.0
  O  O27  1  0.379  0.051  0.114  1.0
  O  O28  1  0.924  0.856  0.709  1.0
  O  O29  1  0.576  0.356  0.709  1.0
  O  O30  1  0.362  0.490  0.890  1.0
  O  O31  1  0.424  0.644  0.291  1.0
[/CIF]
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The material structure described by La2GeO5 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(5), three equivalent O(1), and three equivalent O(4) atoms. In the second La site, La(2) is bonded to one O(5), three equivalent O(2), and three equivalent O(3) atoms to form distorted LaO7 hexagonal pyramids that share corners with two equivalent Ge(1)O4 tetrahedra, edges with six equivalent La(2)O7 hexagonal pyramids, and  an edgeedge with one Ge(1)O4 tetrahedra. Ge(1) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form GeO4 tetrahedra that share corners with two equivalent La(2)O7 hexagonal pyramids and  an edgeedge with one La(2)O7 hexagonal pyramid. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to three equivalent La(1) and one Ge(1) atom. In the second O site, O(2) is bonded to three equivalent La(2) and one Ge(1) atom to form distorted OLa3Ge tetrahedra that share corners with two equivalent O(5)La3Ge tetrahedra, corners with four equivalent O(2)La3Ge tetrahedra, corners with five equivalent O(3)La4 tetrahedra,  an edgeedge with one O(2)La3Ge tetrahedra,  an edgeedge with one O(5)La3Ge tetrahedra, and edges with two equivalent O(3)La4 tetrahedra. In the third O site, O(3) is bonded to one La(1) and three equivalent La(2) atoms to form OLa4 tetrahedra that share  a cornercorner with one O(5)La3Ge tetrahedra, corners with four equivalent O(3)La4 tetrahedra, corners with five equivalent O(2)La3Ge tetrahedra,  an edgeedge with one O(3)La4 tetrahedra, edges with two equivalent O(2)La3Ge tetrahedra, and edges with two equivalent O(5)La3Ge tetrahedra. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to three equivalent La(1) and one Ge(1) atom. In the fifth O site, O(5) is bonded to one La(2), two equivalent La(1), and one Ge(1) atom to form distorted OLa3Ge tetrahedra that share  a cornercorner with one O(3)La4 tetrahedra, corners with two equivalent O(2)La3Ge tetrahedra, corners with two equivalent O(5)La3Ge tetrahedra,  an edgeedge with one O(2)La3Ge tetrahedra, and edges with two equivalent O(3)La4 tetrahedra. is represented by the CIF card [CIF]
data_La2GeO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.473
_cell_length_b   7.101
_cell_length_c   9.608
_cell_angle_alpha   72.590
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   486.509
_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
  La  La0  1  0.355  0.916  0.382  1.0
  La  La1  1  0.145  0.416  0.382  1.0
  La  La2  1  0.625  0.235  0.978  1.0
  La  La3  1  0.645  0.084  0.618  1.0
  La  La4  1  0.875  0.735  0.978  1.0
  La  La5  1  0.375  0.765  0.022  1.0
  La  La6  1  0.855  0.584  0.618  1.0
  La  La7  1  0.125  0.265  0.022  1.0
  Ge  Ge8  1  0.588  0.460  0.298  1.0
  Ge  Ge9  1  0.912  0.960  0.298  1.0
  Ge  Ge10  1  0.088  0.040  0.702  1.0
  Ge  Ge11  1  0.412  0.540  0.702  1.0
  O  O12  1  0.227  0.553  0.592  1.0
  O  O13  1  0.862  0.010  0.110  1.0
  O  O14  1  0.138  0.990  0.890  1.0
  O  O15  1  0.879  0.449  0.886  1.0
  O  O16  1  0.773  0.447  0.408  1.0
  O  O17  1  0.638  0.510  0.110  1.0
  O  O18  1  0.955  0.250  0.631  1.0
  O  O19  1  0.121  0.551  0.114  1.0
  O  O20  1  0.455  0.250  0.369  1.0
  O  O21  1  0.076  0.144  0.291  1.0
  O  O22  1  0.727  0.947  0.408  1.0
  O  O23  1  0.621  0.949  0.886  1.0
  O  O24  1  0.545  0.750  0.631  1.0
  O  O25  1  0.273  0.053  0.592  1.0
  O  O26  1  0.045  0.750  0.369  1.0
  O  O27  1  0.379  0.051  0.114  1.0
  O  O28  1  0.924  0.856  0.709  1.0
  O  O29  1  0.576  0.356  0.709  1.0
  O  O30  1  0.362  0.490  0.890  1.0
  O  O31  1  0.424  0.644  0.291  1.0
[/CIF]
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