The material structure described by Tb3(MnGe)4 crystallizes in the orthorhombic Immm space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 12-coordinate geometry to six equivalent Mn(1), two equivalent Ge(1), and four equivalent Ge(2) atoms. In the second Tb site, Tb(2) is bonded to two equivalent Ge(1) and four equivalent Ge(2) atoms to form TbGe6 octahedra that share corners with four equivalent Mn(1)Tb3Ge4 tetrahedra, edges with two equivalent Tb(2)Ge6 octahedra, and edges with eight equivalent Mn(1)Tb3Ge4 tetrahedra. Mn(1) is bonded to three equivalent Tb(1), one Ge(2), and three equivalent Ge(1) atoms to form distorted MnTb3Ge4 tetrahedra that share  a cornercorner with one Tb(2)Ge6 octahedra, corners with five equivalent Mn(1)Tb3Ge4 tetrahedra, edges with two equivalent Tb(2)Ge6 octahedra, edges with six equivalent Mn(1)Tb3Ge4 tetrahedra, and faces with four equivalent Mn(1)Tb3Ge4 tetrahedra. The corner-sharing octahedral tilt angles are 57°. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Tb(2), two equivalent Tb(1), and six equivalent Mn(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Tb(2), four equivalent Tb(1), two equivalent Mn(1), and one Ge(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tb3(MnGe)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.013
_cell_length_b   8.013
_cell_length_c   8.013
_cell_angle_alpha   149.979
_cell_angle_beta   127.874
_cell_angle_gamma   61.330
_symmetry_Int_Tables_number   1
_cell_volume   201.433
_cell_formula_units_Z   1
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
  Tb  Tb0  1  0.124  0.124  0.000  1.0
  Tb  Tb1  1  0.500  0.000  0.500  1.0
  Tb  Tb2  1  0.876  0.876  0.000  1.0
  Mn  Mn3  1  0.487  0.676  0.811  1.0
  Mn  Mn4  1  0.135  0.324  0.811  1.0
  Mn  Mn5  1  0.865  0.676  0.189  1.0
  Mn  Mn6  1  0.513  0.324  0.189  1.0
  Ge  Ge7  1  0.280  0.780  0.500  1.0
  Ge  Ge8  1  0.198  0.500  0.698  1.0
  Ge  Ge9  1  0.802  0.500  0.302  1.0
  Ge  Ge10  1  0.720  0.220  0.500  1.0
[/CIF]
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The material structure described by Tb3(MnGe)4 crystallizes in the orthorhombic Immm space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 12-coordinate geometry to six equivalent Mn(1), two equivalent Ge(1), and four equivalent Ge(2) atoms. In the second Tb site, Tb(2) is bonded to two equivalent Ge(1) and four equivalent Ge(2) atoms to form TbGe6 octahedra that share corners with four equivalent Mn(1)Tb3Ge4 tetrahedra, edges with two equivalent Tb(2)Ge6 octahedra, and edges with eight equivalent Mn(1)Tb3Ge4 tetrahedra. Mn(1) is bonded to three equivalent Tb(1), one Ge(2), and three equivalent Ge(1) atoms to form distorted MnTb3Ge4 tetrahedra that share  a cornercorner with one Tb(2)Ge6 octahedra, corners with five equivalent Mn(1)Tb3Ge4 tetrahedra, edges with two equivalent Tb(2)Ge6 octahedra, edges with six equivalent Mn(1)Tb3Ge4 tetrahedra, and faces with four equivalent Mn(1)Tb3Ge4 tetrahedra. The corner-sharing octahedral tilt angles are 57°. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Tb(2), two equivalent Tb(1), and six equivalent Mn(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Tb(2), four equivalent Tb(1), two equivalent Mn(1), and one Ge(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tb3(MnGe)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.013
_cell_length_b   8.013
_cell_length_c   8.013
_cell_angle_alpha   149.979
_cell_angle_beta   127.874
_cell_angle_gamma   61.330
_symmetry_Int_Tables_number   1
_cell_volume   201.433
_cell_formula_units_Z   1
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
  Tb  Tb0  1  0.124  0.124  0.000  1.0
  Tb  Tb1  1  0.500  0.000  0.500  1.0
  Tb  Tb2  1  0.876  0.876  0.000  1.0
  Mn  Mn3  1  0.487  0.676  0.811  1.0
  Mn  Mn4  1  0.135  0.324  0.811  1.0
  Mn  Mn5  1  0.865  0.676  0.189  1.0
  Mn  Mn6  1  0.513  0.324  0.189  1.0
  Ge  Ge7  1  0.280  0.780  0.500  1.0
  Ge  Ge8  1  0.198  0.500  0.698  1.0
  Ge  Ge9  1  0.802  0.500  0.302  1.0
  Ge  Ge10  1  0.720  0.220  0.500  1.0
[/CIF]
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