The material structure described by Tb12(MnC3)5 crystallizes in the orthorhombic Amm2 space group. There are seven inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a rectangular see-saw-like geometry to one C(7), one C(8), and two equivalent C(3) atoms. In the second Tb site, Tb(2) is bonded in a rectangular see-saw-like geometry to two equivalent C(4) and two equivalent C(9) atoms. In the third Tb site, Tb(3) is bonded to one C(2), one C(3), one C(5), and two equivalent C(7) atoms to form a mixture of distorted corner and edge-sharing TbC5 square pyramids. In the fourth Tb site, Tb(4) is bonded to one C(1), one C(3), one C(5), and two equivalent C(8) atoms to form a mixture of distorted corner and edge-sharing TbC5 square pyramids. In the fifth Tb site, Tb(5) is bonded to one C(1), one C(4), one C(6), and two equivalent C(9) atoms to form a mixture of distorted corner and edge-sharing TbC5 square pyramids. In the sixth Tb site, Tb(6) is bonded in a 8-coordinate geometry to one C(7), one C(9), two equivalent C(1), two equivalent C(5), and two equivalent C(8) atoms. In the seventh Tb site, Tb(7) is bonded in a 8-coordinate geometry to two equivalent C(2), two equivalent C(6), two equivalent C(7), and two equivalent C(9) atoms. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a distorted trigonal non-coplanar geometry to one C(1), one C(3), and one C(4) atom. In the second Mn site, Mn(2) is bonded in a 3-coordinate geometry to one C(2) and two equivalent C(3) atoms. In the third Mn site, Mn(3) is bonded in a trigonal planar geometry to one C(7), one C(8), and one C(9) atom. There are nine inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to one Tb(4), one Tb(5), two equivalent Tb(6), one Mn(1), and one C(5) atom. In the second C site, C(2) is bonded in a 6-coordinate geometry to two equivalent Tb(3), two equivalent Tb(7), one Mn(2), and one C(6) atom. In the third C site, C(3) is bonded to one Tb(3), one Tb(4), two equivalent Tb(1), one Mn(1), and one Mn(2) atom to form CTb4Mn2 octahedra that share  a cornercorner with one C(4)Tb4Mn2 octahedra, corners with three equivalent C(3)Tb4Mn2 octahedra, edges with two equivalent C(7)Tb5Mn octahedra, and edges with two equivalent C(8)Tb5Mn octahedra. The corner-sharing octahedral tilt angles range from 1-33°. In the fourth C site, C(4) is bonded to two equivalent Tb(2), two equivalent Tb(5), and two equivalent Mn(1) atoms to form CTb4Mn2 octahedra that share corners with two equivalent C(3)Tb4Mn2 octahedra, corners with two equivalent C(4)Tb4Mn2 octahedra, and edges with four equivalent C(9)Tb5Mn octahedra. The corner-sharing octahedral tilt angles range from 3-33°. In the fifth C site, C(5) is bonded in a 5-coordinate geometry to one Tb(3), one Tb(4), two equivalent Tb(6), and one C(1) atom. In the sixth C site, C(6) is bonded in a 5-coordinate geometry to two equivalent Tb(5), two equivalent Tb(7), and one C(2) atom. In the seventh C site, C(7) is bonded to one Tb(1), one Tb(6), one Tb(7), two equivalent Tb(3), and one Mn(3) atom to form distorted CTb5Mn octahedra that share corners with two equivalent C(9)Tb5Mn octahedra, corners with three equivalent C(7)Tb5Mn octahedra,  an edgeedge with one C(9)Tb5Mn octahedra, edges with two equivalent C(3)Tb4Mn2 octahedra, and edges with two equivalent C(8)Tb5Mn octahedra. The corner-sharing octahedral tilt angles range from 10-41°. In the eighth C site, C(8) is bonded to one Tb(1), two equivalent Tb(4), two equivalent Tb(6), and one Mn(3) atom to form distorted CTb5Mn octahedra that share  a cornercorner with one C(9)Tb5Mn octahedra, corners with four equivalent C(8)Tb5Mn octahedra,  an edgeedge with one C(9)Tb5Mn octahedra, edges with two equivalent C(3)Tb4Mn2 octahedra, and edges with two equivalent C(7)Tb5Mn octahedra. The corner-sharing octahedral tilt angles range from 9-40°. In the ninth C site, C(9) is bonded to one Tb(2), one Tb(6), one Tb(7), two equivalent Tb(5), and one Mn(3) atom to form distorted CTb5Mn octahedra that share  a cornercorner with one C(8)Tb5Mn octahedra, corners with two equivalent C(7)Tb5Mn octahedra, corners with two equivalent C(9)Tb5Mn octahedra,  an edgeedge with one C(7)Tb5Mn octahedra,  an edgeedge with one C(8)Tb5Mn octahedra,  an edgeedge with one C(9)Tb5Mn octahedra, and edges with two equivalent C(4)Tb4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 10-40°. is represented by the CIF file [CIF]
data_Tb12(MnC3)5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.082
_cell_length_b   10.500
_cell_length_c   10.503
_cell_angle_alpha   120.011
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   485.286
_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  0.500  0.207  0.207  1.0
  Tb  Tb1  1  0.500  0.000  0.790  1.0
  Tb  Tb2  1  0.500  0.793  0.000  1.0
  Tb  Tb3  1  1.000  0.731  0.186  1.0
  Tb  Tb4  1  1.000  0.456  0.269  1.0
  Tb  Tb5  1  0.000  0.544  0.814  1.0
  Tb  Tb6  1  0.000  0.814  0.545  1.0
  Tb  Tb7  1  0.000  0.186  0.731  1.0
  Tb  Tb8  1  1.000  0.269  0.455  1.0
  Tb  Tb9  1  0.500  0.573  0.572  1.0
  Tb  Tb10  1  0.500  1.000  0.430  1.0
  Tb  Tb11  1  0.500  0.427  0.999  1.0
  Mn  Mn12  1  0.000  0.845  0.845  1.0
  Mn  Mn13  1  1.000  1.000  0.155  1.0
  Mn  Mn14  1  0.000  0.155  0.001  1.0
  Mn  Mn15  1  0.500  0.666  0.333  1.0
  Mn  Mn16  1  0.500  0.334  0.667  1.0
  C  C17  1  0.000  0.673  0.673  1.0
  C  C18  1  0.000  1.000  0.327  1.0
  C  C19  1  1.000  0.327  1.000  1.0
  C  C20  1  0.000  0.206  0.205  1.0
  C  C21  1  0.000  1.000  0.797  1.0
  C  C22  1  1.000  0.794  1.000  1.0
  C  C23  1  1.000  0.545  0.544  1.0
  C  C24  1  0.000  1.000  0.455  1.0
  C  C25  1  0.000  0.455  1.000  1.0
  C  C26  1  0.500  0.717  0.197  1.0
  C  C27  1  0.500  0.479  0.282  1.0
  C  C28  1  0.500  0.521  0.803  1.0
  C  C29  1  0.500  0.804  0.521  1.0
  C  C30  1  0.500  0.196  0.717  1.0
  C  C31  1  0.500  0.283  0.480  1.0
[/CIF]
.
The material structure described by Tb12(MnC3)5 crystallizes in the orthorhombic Amm2 space group. There are seven inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a rectangular see-saw-like geometry to one C(7), one C(8), and two equivalent C(3) atoms. In the second Tb site, Tb(2) is bonded in a rectangular see-saw-like geometry to two equivalent C(4) and two equivalent C(9) atoms. In the third Tb site, Tb(3) is bonded to one C(2), one C(3), one C(5), and two equivalent C(7) atoms to form a mixture of distorted corner and edge-sharing TbC5 square pyramids. In the fourth Tb site, Tb(4) is bonded to one C(1), one C(3), one C(5), and two equivalent C(8) atoms to form a mixture of distorted corner and edge-sharing TbC5 square pyramids. In the fifth Tb site, Tb(5) is bonded to one C(1), one C(4), one C(6), and two equivalent C(9) atoms to form a mixture of distorted corner and edge-sharing TbC5 square pyramids. In the sixth Tb site, Tb(6) is bonded in a 8-coordinate geometry to one C(7), one C(9), two equivalent C(1), two equivalent C(5), and two equivalent C(8) atoms. In the seventh Tb site, Tb(7) is bonded in a 8-coordinate geometry to two equivalent C(2), two equivalent C(6), two equivalent C(7), and two equivalent C(9) atoms. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a distorted trigonal non-coplanar geometry to one C(1), one C(3), and one C(4) atom. In the second Mn site, Mn(2) is bonded in a 3-coordinate geometry to one C(2) and two equivalent C(3) atoms. In the third Mn site, Mn(3) is bonded in a trigonal planar geometry to one C(7), one C(8), and one C(9) atom. There are nine inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to one Tb(4), one Tb(5), two equivalent Tb(6), one Mn(1), and one C(5) atom. In the second C site, C(2) is bonded in a 6-coordinate geometry to two equivalent Tb(3), two equivalent Tb(7), one Mn(2), and one C(6) atom. In the third C site, C(3) is bonded to one Tb(3), one Tb(4), two equivalent Tb(1), one Mn(1), and one Mn(2) atom to form CTb4Mn2 octahedra that share  a cornercorner with one C(4)Tb4Mn2 octahedra, corners with three equivalent C(3)Tb4Mn2 octahedra, edges with two equivalent C(7)Tb5Mn octahedra, and edges with two equivalent C(8)Tb5Mn octahedra. The corner-sharing octahedral tilt angles range from 1-33°. In the fourth C site, C(4) is bonded to two equivalent Tb(2), two equivalent Tb(5), and two equivalent Mn(1) atoms to form CTb4Mn2 octahedra that share corners with two equivalent C(3)Tb4Mn2 octahedra, corners with two equivalent C(4)Tb4Mn2 octahedra, and edges with four equivalent C(9)Tb5Mn octahedra. The corner-sharing octahedral tilt angles range from 3-33°. In the fifth C site, C(5) is bonded in a 5-coordinate geometry to one Tb(3), one Tb(4), two equivalent Tb(6), and one C(1) atom. In the sixth C site, C(6) is bonded in a 5-coordinate geometry to two equivalent Tb(5), two equivalent Tb(7), and one C(2) atom. In the seventh C site, C(7) is bonded to one Tb(1), one Tb(6), one Tb(7), two equivalent Tb(3), and one Mn(3) atom to form distorted CTb5Mn octahedra that share corners with two equivalent C(9)Tb5Mn octahedra, corners with three equivalent C(7)Tb5Mn octahedra,  an edgeedge with one C(9)Tb5Mn octahedra, edges with two equivalent C(3)Tb4Mn2 octahedra, and edges with two equivalent C(8)Tb5Mn octahedra. The corner-sharing octahedral tilt angles range from 10-41°. In the eighth C site, C(8) is bonded to one Tb(1), two equivalent Tb(4), two equivalent Tb(6), and one Mn(3) atom to form distorted CTb5Mn octahedra that share  a cornercorner with one C(9)Tb5Mn octahedra, corners with four equivalent C(8)Tb5Mn octahedra,  an edgeedge with one C(9)Tb5Mn octahedra, edges with two equivalent C(3)Tb4Mn2 octahedra, and edges with two equivalent C(7)Tb5Mn octahedra. The corner-sharing octahedral tilt angles range from 9-40°. In the ninth C site, C(9) is bonded to one Tb(2), one Tb(6), one Tb(7), two equivalent Tb(5), and one Mn(3) atom to form distorted CTb5Mn octahedra that share  a cornercorner with one C(8)Tb5Mn octahedra, corners with two equivalent C(7)Tb5Mn octahedra, corners with two equivalent C(9)Tb5Mn octahedra,  an edgeedge with one C(7)Tb5Mn octahedra,  an edgeedge with one C(8)Tb5Mn octahedra,  an edgeedge with one C(9)Tb5Mn octahedra, and edges with two equivalent C(4)Tb4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 10-40°. is represented by the CIF file [CIF]
data_Tb12(MnC3)5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.082
_cell_length_b   10.500
_cell_length_c   10.503
_cell_angle_alpha   120.011
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   485.286
_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  0.500  0.207  0.207  1.0
  Tb  Tb1  1  0.500  0.000  0.790  1.0
  Tb  Tb2  1  0.500  0.793  0.000  1.0
  Tb  Tb3  1  1.000  0.731  0.186  1.0
  Tb  Tb4  1  1.000  0.456  0.269  1.0
  Tb  Tb5  1  0.000  0.544  0.814  1.0
  Tb  Tb6  1  0.000  0.814  0.545  1.0
  Tb  Tb7  1  0.000  0.186  0.731  1.0
  Tb  Tb8  1  1.000  0.269  0.455  1.0
  Tb  Tb9  1  0.500  0.573  0.572  1.0
  Tb  Tb10  1  0.500  1.000  0.430  1.0
  Tb  Tb11  1  0.500  0.427  0.999  1.0
  Mn  Mn12  1  0.000  0.845  0.845  1.0
  Mn  Mn13  1  1.000  1.000  0.155  1.0
  Mn  Mn14  1  0.000  0.155  0.001  1.0
  Mn  Mn15  1  0.500  0.666  0.333  1.0
  Mn  Mn16  1  0.500  0.334  0.667  1.0
  C  C17  1  0.000  0.673  0.673  1.0
  C  C18  1  0.000  1.000  0.327  1.0
  C  C19  1  1.000  0.327  1.000  1.0
  C  C20  1  0.000  0.206  0.205  1.0
  C  C21  1  0.000  1.000  0.797  1.0
  C  C22  1  1.000  0.794  1.000  1.0
  C  C23  1  1.000  0.545  0.544  1.0
  C  C24  1  0.000  1.000  0.455  1.0
  C  C25  1  0.000  0.455  1.000  1.0
  C  C26  1  0.500  0.717  0.197  1.0
  C  C27  1  0.500  0.479  0.282  1.0
  C  C28  1  0.500  0.521  0.803  1.0
  C  C29  1  0.500  0.804  0.521  1.0
  C  C30  1  0.500  0.196  0.717  1.0
  C  C31  1  0.500  0.283  0.480  1.0
[/CIF]
.