The material structure described by CaCuGeH2O5 crystallizes in the monoclinic P2_1/c space group. Ca(1) is bonded to one O(2), one O(3), one O(4), two equivalent O(1), and two equivalent O(5) atoms to form distorted CaO7 pentagonal bipyramids that share corners with three equivalent Ge(1)O4 tetrahedra, edges with two equivalent Ca(1)O7 pentagonal bipyramids, and  an edgeedge with one Ge(1)O4 tetrahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to two equivalent O(2) and two equivalent O(3) atoms. In the second Cu site, Cu(2) is bonded in a square co-planar geometry to two equivalent O(2) and two equivalent O(4) atoms. Ge(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form GeO4 tetrahedra that share corners with three equivalent Ca(1)O7 pentagonal bipyramids and  an edgeedge with one Ca(1)O7 pentagonal bipyramid. There are two inequivalent H sites. In the first H site, H(1) is bonded in a distorted linear geometry to one O(1) and one O(5) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(5) atom. There are five inequivalent O sites. In the first O site, O(4) is bonded in a distorted trigonal planar geometry to one Ca(1), one Cu(2), and one Ge(1) atom. In the second O site, O(5) is bonded in a distorted water-like geometry to two equivalent Ca(1), one H(1), and one H(2) atom. In the third O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Ca(1), one Ge(1), and one H(1) atom. In the fourth O site, O(2) is bonded to one Ca(1), one Cu(1), one Cu(2), and one Ge(1) atom to form distorted corner-sharing OCaCu2Ge trigonal pyramids. In the fifth O site, O(3) is bonded in a distorted trigonal planar geometry to one Ca(1), one Cu(1), and one Ge(1) atom. is represented by the CIF card [CIF]
data_CaCuGeH2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.220
_cell_length_b   5.572
_cell_length_c   16.266
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   102.613
_symmetry_Int_Tables_number   1
_cell_volume   461.768
_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
  Ca  Ca0  1  0.157  0.338  0.822  1.0
  Ca  Ca1  1  0.843  0.162  0.322  1.0
  Ca  Ca2  1  0.843  0.662  0.178  1.0
  Ca  Ca3  1  0.157  0.838  0.678  1.0
  Cu  Cu4  1  0.000  0.000  0.000  1.0
  Cu  Cu5  1  0.000  0.500  0.500  1.0
  Cu  Cu6  1  0.500  0.500  0.000  1.0
  Cu  Cu7  1  0.500  0.000  0.500  1.0
  Ge  Ge8  1  0.490  0.965  0.889  1.0
  Ge  Ge9  1  0.510  0.535  0.389  1.0
  Ge  Ge10  1  0.510  0.035  0.111  1.0
  Ge  Ge11  1  0.490  0.465  0.611  1.0
  H  H12  1  0.688  0.584  0.763  1.0
  H  H13  1  0.312  0.916  0.263  1.0
  H  H14  1  0.312  0.416  0.237  1.0
  H  H15  1  0.688  0.084  0.737  1.0
  H  H16  1  0.863  0.750  0.833  1.0
  H  H17  1  0.137  0.750  0.333  1.0
  H  H18  1  0.137  0.250  0.167  1.0
  H  H19  1  0.863  0.250  0.667  1.0
  O  O20  1  0.408  0.041  0.788  1.0
  O  O21  1  0.592  0.459  0.288  1.0
  O  O22  1  0.592  0.959  0.212  1.0
  O  O23  1  0.408  0.541  0.712  1.0
  O  O24  1  0.340  0.170  0.951  1.0
  O  O25  1  0.660  0.330  0.451  1.0
  O  O26  1  0.660  0.830  0.049  1.0
  O  O27  1  0.340  0.670  0.549  1.0
  O  O28  1  0.839  0.031  0.894  1.0
  O  O29  1  0.161  0.469  0.394  1.0
  O  O30  1  0.161  0.969  0.106  1.0
  O  O31  1  0.839  0.531  0.606  1.0
  O  O32  1  0.347  0.653  0.912  1.0
  O  O33  1  0.653  0.847  0.412  1.0
  O  O34  1  0.653  0.347  0.088  1.0
  O  O35  1  0.347  0.153  0.588  1.0
  O  O36  1  0.867  0.620  0.792  1.0
  O  O37  1  0.133  0.880  0.292  1.0
  O  O38  1  0.133  0.380  0.208  1.0
  O  O39  1  0.867  0.120  0.708  1.0
[/CIF]
.
The material structure described by CaCuGeH2O5 crystallizes in the monoclinic P2_1/c space group. Ca(1) is bonded to one O(2), one O(3), one O(4), two equivalent O(1), and two equivalent O(5) atoms to form distorted CaO7 pentagonal bipyramids that share corners with three equivalent Ge(1)O4 tetrahedra, edges with two equivalent Ca(1)O7 pentagonal bipyramids, and  an edgeedge with one Ge(1)O4 tetrahedra. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to two equivalent O(2) and two equivalent O(3) atoms. In the second Cu site, Cu(2) is bonded in a square co-planar geometry to two equivalent O(2) and two equivalent O(4) atoms. Ge(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form GeO4 tetrahedra that share corners with three equivalent Ca(1)O7 pentagonal bipyramids and  an edgeedge with one Ca(1)O7 pentagonal bipyramid. There are two inequivalent H sites. In the first H site, H(1) is bonded in a distorted linear geometry to one O(1) and one O(5) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(5) atom. There are five inequivalent O sites. In the first O site, O(4) is bonded in a distorted trigonal planar geometry to one Ca(1), one Cu(2), and one Ge(1) atom. In the second O site, O(5) is bonded in a distorted water-like geometry to two equivalent Ca(1), one H(1), and one H(2) atom. In the third O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Ca(1), one Ge(1), and one H(1) atom. In the fourth O site, O(2) is bonded to one Ca(1), one Cu(1), one Cu(2), and one Ge(1) atom to form distorted corner-sharing OCaCu2Ge trigonal pyramids. In the fifth O site, O(3) is bonded in a distorted trigonal planar geometry to one Ca(1), one Cu(1), and one Ge(1) atom. is represented by the CIF card [CIF]
data_CaCuGeH2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.220
_cell_length_b   5.572
_cell_length_c   16.266
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   102.613
_symmetry_Int_Tables_number   1
_cell_volume   461.768
_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
  Ca  Ca0  1  0.157  0.338  0.822  1.0
  Ca  Ca1  1  0.843  0.162  0.322  1.0
  Ca  Ca2  1  0.843  0.662  0.178  1.0
  Ca  Ca3  1  0.157  0.838  0.678  1.0
  Cu  Cu4  1  0.000  0.000  0.000  1.0
  Cu  Cu5  1  0.000  0.500  0.500  1.0
  Cu  Cu6  1  0.500  0.500  0.000  1.0
  Cu  Cu7  1  0.500  0.000  0.500  1.0
  Ge  Ge8  1  0.490  0.965  0.889  1.0
  Ge  Ge9  1  0.510  0.535  0.389  1.0
  Ge  Ge10  1  0.510  0.035  0.111  1.0
  Ge  Ge11  1  0.490  0.465  0.611  1.0
  H  H12  1  0.688  0.584  0.763  1.0
  H  H13  1  0.312  0.916  0.263  1.0
  H  H14  1  0.312  0.416  0.237  1.0
  H  H15  1  0.688  0.084  0.737  1.0
  H  H16  1  0.863  0.750  0.833  1.0
  H  H17  1  0.137  0.750  0.333  1.0
  H  H18  1  0.137  0.250  0.167  1.0
  H  H19  1  0.863  0.250  0.667  1.0
  O  O20  1  0.408  0.041  0.788  1.0
  O  O21  1  0.592  0.459  0.288  1.0
  O  O22  1  0.592  0.959  0.212  1.0
  O  O23  1  0.408  0.541  0.712  1.0
  O  O24  1  0.340  0.170  0.951  1.0
  O  O25  1  0.660  0.330  0.451  1.0
  O  O26  1  0.660  0.830  0.049  1.0
  O  O27  1  0.340  0.670  0.549  1.0
  O  O28  1  0.839  0.031  0.894  1.0
  O  O29  1  0.161  0.469  0.394  1.0
  O  O30  1  0.161  0.969  0.106  1.0
  O  O31  1  0.839  0.531  0.606  1.0
  O  O32  1  0.347  0.653  0.912  1.0
  O  O33  1  0.653  0.847  0.412  1.0
  O  O34  1  0.653  0.347  0.088  1.0
  O  O35  1  0.347  0.153  0.588  1.0
  O  O36  1  0.867  0.620  0.792  1.0
  O  O37  1  0.133  0.880  0.292  1.0
  O  O38  1  0.133  0.380  0.208  1.0
  O  O39  1  0.867  0.120  0.708  1.0
[/CIF]
.