The material structure described by Lu3Fe2Si3 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Lu sites. In the first Lu site, Lu(1) is bonded in a 9-coordinate geometry to four equivalent Fe(1), two equivalent Si(2), and three equivalent Si(1) atoms. In the second Lu site, Lu(2) is bonded in a 10-coordinate geometry to four equivalent Fe(1), two equivalent Si(1), and five equivalent Si(2) atoms. Fe(1) is bonded in a 10-coordinate geometry to two equivalent Lu(1), four equivalent Lu(2), one Si(1), and three equivalent Si(2) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to three equivalent Lu(1), four equivalent Lu(2), and two equivalent Fe(1) atoms. In the second Si site, Si(2) is bonded in a 10-coordinate geometry to one Lu(1), five equivalent Lu(2), three equivalent Fe(1), and one Si(2) atom. is represented by the CIF file [CIF]
data_Lu3Fe2Si3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.499
_cell_length_b   5.499
_cell_length_c   13.439
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   136.595
_symmetry_Int_Tables_number   1
_cell_volume   279.241
_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
  Lu  Lu0  1  0.633  0.367  0.250  1.0
  Lu  Lu1  1  0.367  0.633  0.750  1.0
  Lu  Lu2  1  0.918  0.082  0.113  1.0
  Lu  Lu3  1  0.082  0.918  0.887  1.0
  Lu  Lu4  1  0.082  0.918  0.613  1.0
  Lu  Lu5  1  0.918  0.082  0.387  1.0
  Fe  Fe6  1  0.786  0.214  0.582  1.0
  Fe  Fe7  1  0.214  0.786  0.418  1.0
  Fe  Fe8  1  0.214  0.786  0.082  1.0
  Fe  Fe9  1  0.786  0.214  0.918  1.0
  Si  Si10  1  0.329  0.671  0.250  1.0
  Si  Si11  1  0.671  0.329  0.750  1.0
  Si  Si12  1  0.616  0.384  0.039  1.0
  Si  Si13  1  0.384  0.616  0.961  1.0
  Si  Si14  1  0.384  0.616  0.539  1.0
  Si  Si15  1  0.616  0.384  0.461  1.0
[/CIF]
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The material structure described by Lu3Fe2Si3 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Lu sites. In the first Lu site, Lu(1) is bonded in a 9-coordinate geometry to four equivalent Fe(1), two equivalent Si(2), and three equivalent Si(1) atoms. In the second Lu site, Lu(2) is bonded in a 10-coordinate geometry to four equivalent Fe(1), two equivalent Si(1), and five equivalent Si(2) atoms. Fe(1) is bonded in a 10-coordinate geometry to two equivalent Lu(1), four equivalent Lu(2), one Si(1), and three equivalent Si(2) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to three equivalent Lu(1), four equivalent Lu(2), and two equivalent Fe(1) atoms. In the second Si site, Si(2) is bonded in a 10-coordinate geometry to one Lu(1), five equivalent Lu(2), three equivalent Fe(1), and one Si(2) atom. is represented by the CIF file [CIF]
data_Lu3Fe2Si3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.499
_cell_length_b   5.499
_cell_length_c   13.439
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   136.595
_symmetry_Int_Tables_number   1
_cell_volume   279.241
_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
  Lu  Lu0  1  0.633  0.367  0.250  1.0
  Lu  Lu1  1  0.367  0.633  0.750  1.0
  Lu  Lu2  1  0.918  0.082  0.113  1.0
  Lu  Lu3  1  0.082  0.918  0.887  1.0
  Lu  Lu4  1  0.082  0.918  0.613  1.0
  Lu  Lu5  1  0.918  0.082  0.387  1.0
  Fe  Fe6  1  0.786  0.214  0.582  1.0
  Fe  Fe7  1  0.214  0.786  0.418  1.0
  Fe  Fe8  1  0.214  0.786  0.082  1.0
  Fe  Fe9  1  0.786  0.214  0.918  1.0
  Si  Si10  1  0.329  0.671  0.250  1.0
  Si  Si11  1  0.671  0.329  0.750  1.0
  Si  Si12  1  0.616  0.384  0.039  1.0
  Si  Si13  1  0.384  0.616  0.961  1.0
  Si  Si14  1  0.384  0.616  0.539  1.0
  Si  Si15  1  0.616  0.384  0.461  1.0
[/CIF]
.