The crystal structure described by Tb3(RuSi3)4 crystallizes in the orthorhombic Cmce space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 18-coordinate geometry to two equivalent Ru(1), four equivalent Ru(2), four equivalent Si(2), four equivalent Si(3), and four equivalent Si(4) atoms. In the second Tb site, Tb(2) is bonded in a 16-coordinate geometry to four Ru(1,1,1); four equivalent Si(1); four equivalent Si(3); and four equivalent Si(4) atoms. There are six inequivalent Ru sites. In the first Ru site, Ru(2) is bonded in a 7-coordinate geometry to two equivalent Tb(1), two equivalent Si(3), two equivalent Si(4), and three equivalent Si(2) atoms. In the second Ru site, Ru(2) is bonded in a 7-coordinate geometry to two equivalent Tb(1), two equivalent Si(3), two equivalent Si(4), and three equivalent Si(2) atoms. In the third Ru site, Ru(2) is bonded in a 7-coordinate geometry to two equivalent Tb(1), two equivalent Si(3), two equivalent Si(4), and three equivalent Si(2) atoms. In the fourth Ru site, Ru(1) is bonded in a 5-coordinate geometry to one Tb(1), four equivalent Tb(2), one Si(1), two equivalent Si(3), and two equivalent Si(4) atoms. In the fifth Ru site, Ru(1) is bonded in a 5-coordinate geometry to one Tb(1), four equivalent Tb(2), one Si(1), two equivalent Si(3), and two equivalent Si(4) atoms. In the sixth Ru site, Ru(1) is bonded in a 5-coordinate geometry to one Tb(1), four equivalent Tb(2), one Si(1), two equivalent Si(3), and two equivalent Si(4) atoms. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to four equivalent Tb(2), one Ru(1), two equivalent Si(3), and two equivalent Si(4) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Tb(1), three equivalent Ru(2), two equivalent Si(3), and two equivalent Si(4) atoms. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to one Tb(1), two equivalent Tb(2), one Ru(1), one Ru(2), one Si(1), one Si(2), and two equivalent Si(4) atoms. In the fourth Si site, Si(4) is bonded in a 9-coordinate geometry to one Tb(1), two equivalent Tb(2), one Ru(1), one Ru(2), one Si(1), one Si(2), and two equivalent Si(3) atoms. is represented by the CIF file [CIF]
data_Tb3(Si3Ru)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.122
_cell_length_b   10.122
_cell_length_c   8.145
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   132.555
_symmetry_Int_Tables_number   1
_cell_volume   614.707
_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
  Tb  Tb0  1  0.500  0.500  0.500  1.0
  Tb  Tb1  1  0.000  0.000  0.000  1.0
  Tb  Tb2  1  0.504  0.004  0.750  1.0
  Tb  Tb3  1  0.996  0.496  0.250  1.0
  Tb  Tb4  1  0.496  0.996  0.250  1.0
  Tb  Tb5  1  0.004  0.504  0.750  1.0
  Si  Si6  1  0.795  0.205  0.500  1.0
  Si  Si7  1  0.295  0.705  0.000  1.0
  Si  Si8  1  0.205  0.795  0.500  1.0
  Si  Si9  1  0.705  0.295  0.000  1.0
  Si  Si10  1  0.333  0.333  0.833  1.0
  Si  Si11  1  0.667  0.667  0.167  1.0
  Si  Si12  1  0.167  0.167  0.333  1.0
  Si  Si13  1  0.833  0.833  0.667  1.0
  Si  Si14  1  0.123  0.889  0.729  1.0
  Si  Si15  1  0.111  0.877  0.271  1.0
  Si  Si16  1  0.611  0.377  0.229  1.0
  Si  Si17  1  0.623  0.389  0.771  1.0
  Si  Si18  1  0.877  0.111  0.271  1.0
  Si  Si19  1  0.889  0.123  0.729  1.0
  Si  Si20  1  0.389  0.623  0.771  1.0
  Si  Si21  1  0.377  0.611  0.229  1.0
  Si  Si22  1  0.346  0.112  0.507  1.0
  Si  Si23  1  0.888  0.654  0.493  1.0
  Si  Si24  1  0.388  0.154  0.007  1.0
  Si  Si25  1  0.846  0.612  0.993  1.0
  Si  Si26  1  0.654  0.888  0.493  1.0
  Si  Si27  1  0.112  0.346  0.507  1.0
  Si  Si28  1  0.612  0.846  0.993  1.0
  Si  Si29  1  0.154  0.388  0.007  1.0
  Ru  Ru30  1  0.669  0.331  0.500  1.0
  Ru  Ru31  1  0.169  0.831  0.000  1.0
  Ru  Ru32  1  0.331  0.669  0.500  1.0
  Ru  Ru33  1  0.831  0.169  0.000  1.0
  Ru  Ru34  1  0.127  0.127  0.627  1.0
  Ru  Ru35  1  0.873  0.873  0.373  1.0
  Ru  Ru36  1  0.373  0.373  0.127  1.0
  Ru  Ru37  1  0.627  0.627  0.873  1.0
[/CIF]
.
The crystal structure described by Tb3(RuSi3)4 crystallizes in the orthorhombic Cmce space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 18-coordinate geometry to two equivalent Ru(1), four equivalent Ru(2), four equivalent Si(2), four equivalent Si(3), and four equivalent Si(4) atoms. In the second Tb site, Tb(2) is bonded in a 16-coordinate geometry to four Ru(1,1,1); four equivalent Si(1); four equivalent Si(3); and four equivalent Si(4) atoms. There are six inequivalent Ru sites. In the first Ru site, Ru(2) is bonded in a 7-coordinate geometry to two equivalent Tb(1), two equivalent Si(3), two equivalent Si(4), and three equivalent Si(2) atoms. In the second Ru site, Ru(2) is bonded in a 7-coordinate geometry to two equivalent Tb(1), two equivalent Si(3), two equivalent Si(4), and three equivalent Si(2) atoms. In the third Ru site, Ru(2) is bonded in a 7-coordinate geometry to two equivalent Tb(1), two equivalent Si(3), two equivalent Si(4), and three equivalent Si(2) atoms. In the fourth Ru site, Ru(1) is bonded in a 5-coordinate geometry to one Tb(1), four equivalent Tb(2), one Si(1), two equivalent Si(3), and two equivalent Si(4) atoms. In the fifth Ru site, Ru(1) is bonded in a 5-coordinate geometry to one Tb(1), four equivalent Tb(2), one Si(1), two equivalent Si(3), and two equivalent Si(4) atoms. In the sixth Ru site, Ru(1) is bonded in a 5-coordinate geometry to one Tb(1), four equivalent Tb(2), one Si(1), two equivalent Si(3), and two equivalent Si(4) atoms. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to four equivalent Tb(2), one Ru(1), two equivalent Si(3), and two equivalent Si(4) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Tb(1), three equivalent Ru(2), two equivalent Si(3), and two equivalent Si(4) atoms. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to one Tb(1), two equivalent Tb(2), one Ru(1), one Ru(2), one Si(1), one Si(2), and two equivalent Si(4) atoms. In the fourth Si site, Si(4) is bonded in a 9-coordinate geometry to one Tb(1), two equivalent Tb(2), one Ru(1), one Ru(2), one Si(1), one Si(2), and two equivalent Si(3) atoms. is represented by the CIF file [CIF]
data_Tb3(Si3Ru)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.122
_cell_length_b   10.122
_cell_length_c   8.145
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   132.555
_symmetry_Int_Tables_number   1
_cell_volume   614.707
_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
  Tb  Tb0  1  0.500  0.500  0.500  1.0
  Tb  Tb1  1  0.000  0.000  0.000  1.0
  Tb  Tb2  1  0.504  0.004  0.750  1.0
  Tb  Tb3  1  0.996  0.496  0.250  1.0
  Tb  Tb4  1  0.496  0.996  0.250  1.0
  Tb  Tb5  1  0.004  0.504  0.750  1.0
  Si  Si6  1  0.795  0.205  0.500  1.0
  Si  Si7  1  0.295  0.705  0.000  1.0
  Si  Si8  1  0.205  0.795  0.500  1.0
  Si  Si9  1  0.705  0.295  0.000  1.0
  Si  Si10  1  0.333  0.333  0.833  1.0
  Si  Si11  1  0.667  0.667  0.167  1.0
  Si  Si12  1  0.167  0.167  0.333  1.0
  Si  Si13  1  0.833  0.833  0.667  1.0
  Si  Si14  1  0.123  0.889  0.729  1.0
  Si  Si15  1  0.111  0.877  0.271  1.0
  Si  Si16  1  0.611  0.377  0.229  1.0
  Si  Si17  1  0.623  0.389  0.771  1.0
  Si  Si18  1  0.877  0.111  0.271  1.0
  Si  Si19  1  0.889  0.123  0.729  1.0
  Si  Si20  1  0.389  0.623  0.771  1.0
  Si  Si21  1  0.377  0.611  0.229  1.0
  Si  Si22  1  0.346  0.112  0.507  1.0
  Si  Si23  1  0.888  0.654  0.493  1.0
  Si  Si24  1  0.388  0.154  0.007  1.0
  Si  Si25  1  0.846  0.612  0.993  1.0
  Si  Si26  1  0.654  0.888  0.493  1.0
  Si  Si27  1  0.112  0.346  0.507  1.0
  Si  Si28  1  0.612  0.846  0.993  1.0
  Si  Si29  1  0.154  0.388  0.007  1.0
  Ru  Ru30  1  0.669  0.331  0.500  1.0
  Ru  Ru31  1  0.169  0.831  0.000  1.0
  Ru  Ru32  1  0.331  0.669  0.500  1.0
  Ru  Ru33  1  0.831  0.169  0.000  1.0
  Ru  Ru34  1  0.127  0.127  0.627  1.0
  Ru  Ru35  1  0.873  0.873  0.373  1.0
  Ru  Ru36  1  0.373  0.373  0.127  1.0
  Ru  Ru37  1  0.627  0.627  0.873  1.0
[/CIF]
.