The crystal structure described by Sm4(GeO5)3 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to one O(2), one O(3), one O(6), one O(7), and four equivalent O(5) atoms to form distorted SmO8 pentagonal bipyramids that share corners with two equivalent Ge(1)O4 tetrahedra and edges with three equivalent Sm(1)O8 pentagonal bipyramids. In the second Sm site, Sm(2) is bonded in a 8-coordinate geometry to one O(2), one O(3), one O(4), one O(7), two equivalent O(1), and two equivalent O(5) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form GeO4 tetrahedra that share corners with two equivalent Ge(2)O6 octahedra and corners with two equivalent Sm(1)O8 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 57°. In the second Ge site, Ge(2) is bonded to two equivalent O(4) and four equivalent O(1) atoms to form GeO6 octahedra that share corners with two equivalent Ge(2)O6 octahedra and corners with four equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 45°. There are seven inequivalent O sites. In the first O site, O(2) is bonded in a trigonal planar geometry to one Sm(1), one Sm(2), and one Ge(1) atom. In the second O site, O(3) is bonded in a distorted trigonal planar geometry to one Sm(1), one Sm(2), and one Ge(1) atom. In the third O site, O(4) is bonded to two equivalent Sm(2) and two equivalent Ge(2) atoms to form distorted corner-sharing OSm2Ge2 tetrahedra. In the fourth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Sm(2) and two equivalent Sm(1) atoms. In the fifth O site, O(6) is bonded in a bent 150 degrees geometry to two equivalent Sm(1) atoms. In the sixth O site, O(7) is bonded in a rectangular see-saw-like geometry to two equivalent Sm(1) and two equivalent Sm(2) atoms. In the seventh O site, O(1) is bonded in a distorted trigonal planar geometry to one Sm(2), one Ge(1), and one Ge(2) atom. is represented by the CIF card [CIF]
data_Sm4(GeO5)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.581
_cell_length_b   9.581
_cell_length_c   7.182
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   109.786
_symmetry_Int_Tables_number   1
_cell_volume   620.283
_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
  Sm  Sm0  1  0.591  0.303  0.250  1.0
  Sm  Sm1  1  0.697  0.409  0.750  1.0
  Sm  Sm2  1  0.409  0.697  0.750  1.0
  Sm  Sm3  1  0.303  0.591  0.250  1.0
  Sm  Sm4  1  0.927  0.663  0.250  1.0
  Sm  Sm5  1  0.337  0.073  0.750  1.0
  Sm  Sm6  1  0.073  0.337  0.750  1.0
  Sm  Sm7  1  0.663  0.927  0.250  1.0
  Ge  Ge8  1  0.271  0.966  0.250  1.0
  Ge  Ge9  1  0.034  0.729  0.750  1.0
  Ge  Ge10  1  0.729  0.034  0.750  1.0
  Ge  Ge11  1  0.966  0.271  0.250  1.0
  Ge  Ge12  1  0.000  0.000  0.500  1.0
  Ge  Ge13  1  0.000  0.000  0.000  1.0
  O  O14  1  0.207  0.035  0.452  1.0
  O  O15  1  0.965  0.793  0.548  1.0
  O  O16  1  0.207  0.035  0.048  1.0
  O  O17  1  0.965  0.793  0.952  1.0
  O  O18  1  0.793  0.965  0.548  1.0
  O  O19  1  0.035  0.207  0.452  1.0
  O  O20  1  0.793  0.965  0.952  1.0
  O  O21  1  0.035  0.207  0.048  1.0
  O  O22  1  0.771  0.189  0.250  1.0
  O  O23  1  0.811  0.229  0.750  1.0
  O  O24  1  0.229  0.811  0.750  1.0
  O  O25  1  0.189  0.771  0.250  1.0
  O  O26  1  0.466  0.031  0.250  1.0
  O  O27  1  0.969  0.534  0.750  1.0
  O  O28  1  0.534  0.969  0.750  1.0
  O  O29  1  0.031  0.466  0.250  1.0
  O  O30  1  0.933  0.933  0.250  1.0
  O  O31  1  0.067  0.067  0.750  1.0
  O  O32  1  0.492  0.755  0.440  1.0
  O  O33  1  0.245  0.508  0.560  1.0
  O  O34  1  0.492  0.755  0.060  1.0
  O  O35  1  0.245  0.508  0.940  1.0
  O  O36  1  0.508  0.245  0.560  1.0
  O  O37  1  0.755  0.492  0.440  1.0
  O  O38  1  0.508  0.245  0.940  1.0
  O  O39  1  0.755  0.492  0.060  1.0
  O  O40  1  0.403  0.403  0.250  1.0
  O  O41  1  0.597  0.597  0.750  1.0
  O  O42  1  0.609  0.609  0.250  1.0
  O  O43  1  0.391  0.391  0.750  1.0
[/CIF]
.
The crystal structure described by Sm4(GeO5)3 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to one O(2), one O(3), one O(6), one O(7), and four equivalent O(5) atoms to form distorted SmO8 pentagonal bipyramids that share corners with two equivalent Ge(1)O4 tetrahedra and edges with three equivalent Sm(1)O8 pentagonal bipyramids. In the second Sm site, Sm(2) is bonded in a 8-coordinate geometry to one O(2), one O(3), one O(4), one O(7), two equivalent O(1), and two equivalent O(5) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form GeO4 tetrahedra that share corners with two equivalent Ge(2)O6 octahedra and corners with two equivalent Sm(1)O8 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 57°. In the second Ge site, Ge(2) is bonded to two equivalent O(4) and four equivalent O(1) atoms to form GeO6 octahedra that share corners with two equivalent Ge(2)O6 octahedra and corners with four equivalent Ge(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 45°. There are seven inequivalent O sites. In the first O site, O(2) is bonded in a trigonal planar geometry to one Sm(1), one Sm(2), and one Ge(1) atom. In the second O site, O(3) is bonded in a distorted trigonal planar geometry to one Sm(1), one Sm(2), and one Ge(1) atom. In the third O site, O(4) is bonded to two equivalent Sm(2) and two equivalent Ge(2) atoms to form distorted corner-sharing OSm2Ge2 tetrahedra. In the fourth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Sm(2) and two equivalent Sm(1) atoms. In the fifth O site, O(6) is bonded in a bent 150 degrees geometry to two equivalent Sm(1) atoms. In the sixth O site, O(7) is bonded in a rectangular see-saw-like geometry to two equivalent Sm(1) and two equivalent Sm(2) atoms. In the seventh O site, O(1) is bonded in a distorted trigonal planar geometry to one Sm(2), one Ge(1), and one Ge(2) atom. is represented by the CIF card [CIF]
data_Sm4(GeO5)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.581
_cell_length_b   9.581
_cell_length_c   7.182
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   109.786
_symmetry_Int_Tables_number   1
_cell_volume   620.283
_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
  Sm  Sm0  1  0.591  0.303  0.250  1.0
  Sm  Sm1  1  0.697  0.409  0.750  1.0
  Sm  Sm2  1  0.409  0.697  0.750  1.0
  Sm  Sm3  1  0.303  0.591  0.250  1.0
  Sm  Sm4  1  0.927  0.663  0.250  1.0
  Sm  Sm5  1  0.337  0.073  0.750  1.0
  Sm  Sm6  1  0.073  0.337  0.750  1.0
  Sm  Sm7  1  0.663  0.927  0.250  1.0
  Ge  Ge8  1  0.271  0.966  0.250  1.0
  Ge  Ge9  1  0.034  0.729  0.750  1.0
  Ge  Ge10  1  0.729  0.034  0.750  1.0
  Ge  Ge11  1  0.966  0.271  0.250  1.0
  Ge  Ge12  1  0.000  0.000  0.500  1.0
  Ge  Ge13  1  0.000  0.000  0.000  1.0
  O  O14  1  0.207  0.035  0.452  1.0
  O  O15  1  0.965  0.793  0.548  1.0
  O  O16  1  0.207  0.035  0.048  1.0
  O  O17  1  0.965  0.793  0.952  1.0
  O  O18  1  0.793  0.965  0.548  1.0
  O  O19  1  0.035  0.207  0.452  1.0
  O  O20  1  0.793  0.965  0.952  1.0
  O  O21  1  0.035  0.207  0.048  1.0
  O  O22  1  0.771  0.189  0.250  1.0
  O  O23  1  0.811  0.229  0.750  1.0
  O  O24  1  0.229  0.811  0.750  1.0
  O  O25  1  0.189  0.771  0.250  1.0
  O  O26  1  0.466  0.031  0.250  1.0
  O  O27  1  0.969  0.534  0.750  1.0
  O  O28  1  0.534  0.969  0.750  1.0
  O  O29  1  0.031  0.466  0.250  1.0
  O  O30  1  0.933  0.933  0.250  1.0
  O  O31  1  0.067  0.067  0.750  1.0
  O  O32  1  0.492  0.755  0.440  1.0
  O  O33  1  0.245  0.508  0.560  1.0
  O  O34  1  0.492  0.755  0.060  1.0
  O  O35  1  0.245  0.508  0.940  1.0
  O  O36  1  0.508  0.245  0.560  1.0
  O  O37  1  0.755  0.492  0.440  1.0
  O  O38  1  0.508  0.245  0.940  1.0
  O  O39  1  0.755  0.492  0.060  1.0
  O  O40  1  0.403  0.403  0.250  1.0
  O  O41  1  0.597  0.597  0.750  1.0
  O  O42  1  0.609  0.609  0.250  1.0
  O  O43  1  0.391  0.391  0.750  1.0
[/CIF]
.