The crystal structure described by Gd2Mn(GeO3)4 crystallizes in the orthorhombic Cmme space group. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded to two equivalent O(4) and four equivalent O(2) atoms to form GdO6 octahedra that share corners with eight equivalent Ge(1)O4 tetrahedra. In the second Gd site, Gd(2) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. Mn(1) is bonded to two equivalent O(3) 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 one O(1), one O(2), one O(3), and one O(4) atom to form GeO4 tetrahedra that share corners with two equivalent Gd(1)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, and corners with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-70°. There are four inequivalent O sites. In the first O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1) and two equivalent Ge(1) atoms. In the second O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Gd(1) and two equivalent Ge(1) atoms. In the third O site, O(1) is bonded in a distorted trigonal planar geometry to one Gd(2), one Mn(1), and one Ge(1) atom. In the fourth O site, O(2) is bonded in a distorted trigonal planar geometry to one Gd(1), one Gd(2), and one Ge(1) atom. is represented by the CIF file [CIF]
data_Gd2Mn(GeO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.056
_cell_length_b   10.106
_cell_length_c   10.106
_cell_angle_alpha   90.680
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   516.346
_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
  Gd  Gd0  1  0.500  0.000  0.500  1.0
  Gd  Gd1  1  0.500  0.500  0.000  1.0
  Gd  Gd2  1  0.500  0.750  0.750  1.0
  Gd  Gd3  1  0.500  0.250  0.250  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  0.994  0.746  0.476  1.0
  Ge  Ge7  1  0.006  0.254  0.524  1.0
  Ge  Ge8  1  0.006  0.246  0.976  1.0
  Ge  Ge9  1  0.994  0.754  0.024  1.0
  Ge  Ge10  1  0.006  0.476  0.746  1.0
  Ge  Ge11  1  0.994  0.524  0.254  1.0
  Ge  Ge12  1  0.994  0.976  0.246  1.0
  Ge  Ge13  1  0.006  0.024  0.754  1.0
  O  O14  1  0.262  0.560  0.668  1.0
  O  O15  1  0.248  0.062  0.328  1.0
  O  O16  1  0.248  0.438  0.172  1.0
  O  O17  1  0.262  0.940  0.832  1.0
  O  O18  1  0.738  0.440  0.332  1.0
  O  O19  1  0.752  0.938  0.672  1.0
  O  O20  1  0.752  0.562  0.828  1.0
  O  O21  1  0.738  0.060  0.168  1.0
  O  O22  1  0.738  0.668  0.560  1.0
  O  O23  1  0.752  0.328  0.062  1.0
  O  O24  1  0.752  0.172  0.438  1.0
  O  O25  1  0.738  0.832  0.940  1.0
  O  O26  1  0.262  0.332  0.440  1.0
  O  O27  1  0.248  0.672  0.938  1.0
  O  O28  1  0.248  0.828  0.562  1.0
  O  O29  1  0.262  0.168  0.060  1.0
  O  O30  1  0.832  0.369  0.631  1.0
  O  O31  1  0.833  0.872  0.372  1.0
  O  O32  1  0.833  0.628  0.128  1.0
  O  O33  1  0.832  0.131  0.869  1.0
  O  O34  1  0.168  0.631  0.369  1.0
  O  O35  1  0.167  0.128  0.628  1.0
  O  O36  1  0.167  0.372  0.872  1.0
  O  O37  1  0.168  0.869  0.131  1.0
[/CIF]
.
The crystal structure described by Gd2Mn(GeO3)4 crystallizes in the orthorhombic Cmme space group. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded to two equivalent O(4) and four equivalent O(2) atoms to form GdO6 octahedra that share corners with eight equivalent Ge(1)O4 tetrahedra. In the second Gd site, Gd(2) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. Mn(1) is bonded to two equivalent O(3) 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 one O(1), one O(2), one O(3), and one O(4) atom to form GeO4 tetrahedra that share corners with two equivalent Gd(1)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, and corners with two equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 50-70°. There are four inequivalent O sites. In the first O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Mn(1) and two equivalent Ge(1) atoms. In the second O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Gd(1) and two equivalent Ge(1) atoms. In the third O site, O(1) is bonded in a distorted trigonal planar geometry to one Gd(2), one Mn(1), and one Ge(1) atom. In the fourth O site, O(2) is bonded in a distorted trigonal planar geometry to one Gd(1), one Gd(2), and one Ge(1) atom. is represented by the CIF file [CIF]
data_Gd2Mn(GeO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.056
_cell_length_b   10.106
_cell_length_c   10.106
_cell_angle_alpha   90.680
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   516.346
_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
  Gd  Gd0  1  0.500  0.000  0.500  1.0
  Gd  Gd1  1  0.500  0.500  0.000  1.0
  Gd  Gd2  1  0.500  0.750  0.750  1.0
  Gd  Gd3  1  0.500  0.250  0.250  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  0.994  0.746  0.476  1.0
  Ge  Ge7  1  0.006  0.254  0.524  1.0
  Ge  Ge8  1  0.006  0.246  0.976  1.0
  Ge  Ge9  1  0.994  0.754  0.024  1.0
  Ge  Ge10  1  0.006  0.476  0.746  1.0
  Ge  Ge11  1  0.994  0.524  0.254  1.0
  Ge  Ge12  1  0.994  0.976  0.246  1.0
  Ge  Ge13  1  0.006  0.024  0.754  1.0
  O  O14  1  0.262  0.560  0.668  1.0
  O  O15  1  0.248  0.062  0.328  1.0
  O  O16  1  0.248  0.438  0.172  1.0
  O  O17  1  0.262  0.940  0.832  1.0
  O  O18  1  0.738  0.440  0.332  1.0
  O  O19  1  0.752  0.938  0.672  1.0
  O  O20  1  0.752  0.562  0.828  1.0
  O  O21  1  0.738  0.060  0.168  1.0
  O  O22  1  0.738  0.668  0.560  1.0
  O  O23  1  0.752  0.328  0.062  1.0
  O  O24  1  0.752  0.172  0.438  1.0
  O  O25  1  0.738  0.832  0.940  1.0
  O  O26  1  0.262  0.332  0.440  1.0
  O  O27  1  0.248  0.672  0.938  1.0
  O  O28  1  0.248  0.828  0.562  1.0
  O  O29  1  0.262  0.168  0.060  1.0
  O  O30  1  0.832  0.369  0.631  1.0
  O  O31  1  0.833  0.872  0.372  1.0
  O  O32  1  0.833  0.628  0.128  1.0
  O  O33  1  0.832  0.131  0.869  1.0
  O  O34  1  0.168  0.631  0.369  1.0
  O  O35  1  0.167  0.128  0.628  1.0
  O  O36  1  0.167  0.372  0.872  1.0
  O  O37  1  0.168  0.869  0.131  1.0
[/CIF]
.