The material described by CeMn2(GeO3)4 crystallizes in the tetragonal P4/nbm space group. Ce(1) is bonded in a 8-coordinate geometry to eight equivalent O(1) atoms. Mn(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form MnO6 octahedra that share corners with eight equivalent Ge(1)O4 tetrahedra. Ge(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form GeO4 tetrahedra that share corners with four equivalent Mn(1)O6 octahedra and corners with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 51-69°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Ce(1), one Mn(1), and one Ge(1) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one Mn(1) and two equivalent Ge(1) atoms. is represented by the CIF file [CIF]
data_CeMn2(GeO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.969
_cell_length_b   9.989
_cell_length_c   9.989
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   495.776
_cell_formula_units_Z   2
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
  Ce  Ce0  1  0.500  0.750  0.750  1.0
  Ce  Ce1  1  0.500  0.250  0.250  1.0
  Mn  Mn2  1  0.500  0.500  0.000  1.0
  Mn  Mn3  1  0.500  0.000  0.500  1.0
  Mn  Mn4  1  0.500  0.500  0.500  1.0
  Mn  Mn5  1  0.500  0.000  0.000  1.0
  Ge  Ge6  1  0.000  0.250  0.976  1.0
  Ge  Ge7  1  0.000  0.976  0.250  1.0
  Ge  Ge8  1  0.000  0.250  0.524  1.0
  Ge  Ge9  1  0.000  0.476  0.750  1.0
  Ge  Ge10  1  0.000  0.750  0.476  1.0
  Ge  Ge11  1  0.000  0.750  0.024  1.0
  Ge  Ge12  1  0.000  0.024  0.750  1.0
  Ge  Ge13  1  0.000  0.524  0.250  1.0
  O  O14  1  0.256  0.564  0.667  1.0
  O  O15  1  0.256  0.936  0.833  1.0
  O  O16  1  0.256  0.667  0.936  1.0
  O  O17  1  0.256  0.833  0.564  1.0
  O  O18  1  0.744  0.667  0.564  1.0
  O  O19  1  0.744  0.936  0.667  1.0
  O  O20  1  0.744  0.564  0.833  1.0
  O  O21  1  0.744  0.833  0.936  1.0
  O  O22  1  0.744  0.436  0.333  1.0
  O  O23  1  0.744  0.064  0.167  1.0
  O  O24  1  0.744  0.333  0.064  1.0
  O  O25  1  0.744  0.167  0.436  1.0
  O  O26  1  0.256  0.333  0.436  1.0
  O  O27  1  0.256  0.064  0.333  1.0
  O  O28  1  0.173  0.630  0.370  1.0
  O  O29  1  0.173  0.130  0.630  1.0
  O  O30  1  0.173  0.370  0.870  1.0
  O  O31  1  0.173  0.870  0.130  1.0
  O  O32  1  0.827  0.630  0.130  1.0
  O  O33  1  0.256  0.436  0.167  1.0
  O  O34  1  0.827  0.370  0.630  1.0
  O  O35  1  0.827  0.130  0.870  1.0
  O  O36  1  0.256  0.167  0.064  1.0
  O  O37  1  0.827  0.870  0.370  1.0
[/CIF]
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The material described by CeMn2(GeO3)4 crystallizes in the tetragonal P4/nbm space group. Ce(1) is bonded in a 8-coordinate geometry to eight equivalent O(1) atoms. Mn(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form MnO6 octahedra that share corners with eight equivalent Ge(1)O4 tetrahedra. Ge(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form GeO4 tetrahedra that share corners with four equivalent Mn(1)O6 octahedra and corners with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 51-69°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Ce(1), one Mn(1), and one Ge(1) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one Mn(1) and two equivalent Ge(1) atoms. is represented by the CIF file [CIF]
data_CeMn2(GeO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.969
_cell_length_b   9.989
_cell_length_c   9.989
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   495.776
_cell_formula_units_Z   2
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
  Ce  Ce0  1  0.500  0.750  0.750  1.0
  Ce  Ce1  1  0.500  0.250  0.250  1.0
  Mn  Mn2  1  0.500  0.500  0.000  1.0
  Mn  Mn3  1  0.500  0.000  0.500  1.0
  Mn  Mn4  1  0.500  0.500  0.500  1.0
  Mn  Mn5  1  0.500  0.000  0.000  1.0
  Ge  Ge6  1  0.000  0.250  0.976  1.0
  Ge  Ge7  1  0.000  0.976  0.250  1.0
  Ge  Ge8  1  0.000  0.250  0.524  1.0
  Ge  Ge9  1  0.000  0.476  0.750  1.0
  Ge  Ge10  1  0.000  0.750  0.476  1.0
  Ge  Ge11  1  0.000  0.750  0.024  1.0
  Ge  Ge12  1  0.000  0.024  0.750  1.0
  Ge  Ge13  1  0.000  0.524  0.250  1.0
  O  O14  1  0.256  0.564  0.667  1.0
  O  O15  1  0.256  0.936  0.833  1.0
  O  O16  1  0.256  0.667  0.936  1.0
  O  O17  1  0.256  0.833  0.564  1.0
  O  O18  1  0.744  0.667  0.564  1.0
  O  O19  1  0.744  0.936  0.667  1.0
  O  O20  1  0.744  0.564  0.833  1.0
  O  O21  1  0.744  0.833  0.936  1.0
  O  O22  1  0.744  0.436  0.333  1.0
  O  O23  1  0.744  0.064  0.167  1.0
  O  O24  1  0.744  0.333  0.064  1.0
  O  O25  1  0.744  0.167  0.436  1.0
  O  O26  1  0.256  0.333  0.436  1.0
  O  O27  1  0.256  0.064  0.333  1.0
  O  O28  1  0.173  0.630  0.370  1.0
  O  O29  1  0.173  0.130  0.630  1.0
  O  O30  1  0.173  0.370  0.870  1.0
  O  O31  1  0.173  0.870  0.130  1.0
  O  O32  1  0.827  0.630  0.130  1.0
  O  O33  1  0.256  0.436  0.167  1.0
  O  O34  1  0.827  0.370  0.630  1.0
  O  O35  1  0.827  0.130  0.870  1.0
  O  O36  1  0.256  0.167  0.064  1.0
  O  O37  1  0.827  0.870  0.370  1.0
[/CIF]
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