The material structure described by Er17Ru6Te3 crystallizes in the monoclinic C2/m space group. There are eighteen inequivalent Er sites. In the first Er site, Er(1) is bonded in a 4-coordinate geometry to three equivalent Ru(4) and one Te(1) atom. In the second Er site, Er(2) is bonded in a 5-coordinate geometry to one Ru(2), two equivalent Ru(4), and two equivalent Te(3) atoms. In the third Er site, Er(3) is bonded in a 2-coordinate geometry to three equivalent Ru(6) and two equivalent Te(1) atoms. In the fourth Er site, Er(4) is bonded to one Ru(4), two equivalent Ru(5), and one Te(3) atom to form a mixture of distorted edge and corner-sharing ErTeRu3 tetrahedra. In the fifth Er site, Er(5) is bonded in a 2-coordinate geometry to one Ru(4), two equivalent Ru(2), and two equivalent Te(1) atoms. In the sixth Er site, Er(6) is bonded in a 4-coordinate geometry to one Ru(6), two equivalent Ru(2), and one Te(2) atom. In the seventh Er site, Er(7) is bonded in a 6-coordinate geometry to two equivalent Ru(1), two equivalent Ru(3), and two equivalent Te(3) atoms. In the eighth Er site, Er(8) is bonded in a 2-coordinate geometry to one Ru(5), two equivalent Ru(1), and two equivalent Te(3) atoms. In the ninth Er site, Er(9) is bonded in a 2-coordinate geometry to one Ru(2), two equivalent Ru(3), and two equivalent Te(2) atoms. In the tenth Er site, Er(10) is bonded to one Ru(3), two equivalent Ru(2), and one Te(3) atom to form distorted corner-sharing ErTeRu3 tetrahedra. In the eleventh Er site, Er(11) is bonded to one Ru(1), two equivalent Ru(5), and one Te(2) atom to form a mixture of distorted edge and corner-sharing ErTeRu3 tetrahedra. In the twelfth Er site, Er(12) is bonded in a 5-coordinate geometry to one Ru(5), two equivalent Ru(6), and two equivalent Te(2) atoms. In the thirteenth Er site, Er(13) is bonded in a 6-coordinate geometry to two equivalent Ru(1), two equivalent Ru(3), and two equivalent Te(2) atoms. In the fourteenth Er site, Er(14) is bonded in a 4-coordinate geometry to one Ru(2), two equivalent Ru(6), and one Te(1) atom. In the fifteenth Er site, Er(15) is bonded in a 5-coordinate geometry to one Ru(5), two equivalent Ru(4), and two equivalent Te(1) atoms. In the sixteenth Er site, Er(16) is bonded to one Ru(6), two equivalent Ru(5), and one Te(1) atom to form a mixture of distorted edge and corner-sharing ErTeRu3 tetrahedra. In the seventeenth Er site, Er(17) is bonded in a square co-planar geometry to two equivalent Ru(1) and two equivalent Te(3) atoms. In the eighteenth Er site, Er(18) is bonded in a square co-planar geometry to two equivalent Ru(3) and two equivalent Te(2) atoms. There are six inequivalent Ru sites. In the first Ru site, Ru(1) is bonded in a 8-coordinate geometry to one Er(11), one Er(17), two equivalent Er(13), two equivalent Er(7), two equivalent Er(8), and one Ru(3) atom. In the second Ru site, Ru(2) is bonded in a 9-coordinate geometry to one Er(14), one Er(2), one Er(9), two equivalent Er(10), two equivalent Er(5), and two equivalent Er(6) atoms. In the third Ru site, Ru(3) is bonded in a 9-coordinate geometry to one Er(10), one Er(18), two equivalent Er(13), two equivalent Er(7), two equivalent Er(9), and one Ru(1) atom. In the fourth Ru site, Ru(4) is bonded in a 9-coordinate geometry to one Er(4), one Er(5), two equivalent Er(15), two equivalent Er(2), and three equivalent Er(1) atoms. In the fifth Ru site, Ru(5) is bonded in a 9-coordinate geometry to one Er(12), one Er(15), one Er(8), two equivalent Er(11), two equivalent Er(16), and two equivalent Er(4) atoms. In the sixth Ru site, Ru(6) is bonded in a 9-coordinate geometry to one Er(16), one Er(6), two equivalent Er(12), two equivalent Er(14), and three equivalent Er(3) atoms. There are three inequivalent Te sites. In the first Te site, Te(1) is bonded in a 9-coordinate geometry to one Er(1), one Er(14), one Er(16), two equivalent Er(15), two equivalent Er(3), and two equivalent Er(5) atoms. In the second Te site, Te(2) is bonded in a 9-coordinate geometry to one Er(11), one Er(18), one Er(6), two equivalent Er(12), two equivalent Er(13), and two equivalent Er(9) atoms. In the third Te site, Te(3) is bonded in a 9-coordinate geometry to one Er(10), one Er(17), one Er(4), two equivalent Er(2), two equivalent Er(7), and two equivalent Er(8) atoms. is represented by the CIF card [CIF]
data_Er17(TeRu2)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   20.315
_cell_length_b   20.315
_cell_length_c   16.196
_cell_angle_alpha   84.797
_cell_angle_beta   84.797
_cell_angle_gamma   11.285
_symmetry_Int_Tables_number   1
_cell_volume   1302.532
_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
  Er  Er0  1  0.730  0.730  0.070  1.0
  Er  Er1  1  0.356  0.356  0.922  1.0
  Er  Er2  1  0.732  0.732  0.585  1.0
  Er  Er3  1  0.866  0.866  0.097  1.0
  Er  Er4  1  0.815  0.815  0.781  1.0
  Er  Er5  1  0.869  0.869  0.597  1.0
  Er  Er6  1  0.185  0.185  0.219  1.0
  Er  Er7  1  0.473  0.473  0.836  1.0
  Er  Er8  1  0.558  0.558  0.889  1.0
  Er  Er9  1  0.131  0.131  0.403  1.0
  Er  Er10  1  0.559  0.559  0.388  1.0
  Er  Er11  1  0.907  0.907  0.771  1.0
  Er  Er12  1  0.527  0.527  0.164  1.0
  Er  Er13  1  0.090  0.090  0.732  1.0
  Er  Er14  1  0.361  0.361  0.422  1.0
  Er  Er15  1  0.639  0.639  0.578  1.0
  Er  Er16  1  0.644  0.644  0.078  1.0
  Er  Er17  1  0.475  0.475  0.334  1.0
  Er  Er18  1  0.696  0.696  0.400  1.0
  Er  Er19  1  0.442  0.442  0.111  1.0
  Er  Er20  1  0.702  0.702  0.876  1.0
  Er  Er21  1  0.298  0.298  0.124  1.0
  Er  Er22  1  0.176  0.176  0.708  1.0
  Er  Er23  1  0.525  0.525  0.666  1.0
  Er  Er24  1  0.000  0.000  0.000  1.0
  Er  Er25  1  0.093  0.093  0.229  1.0
  Er  Er26  1  0.824  0.824  0.292  1.0
  Er  Er27  1  0.134  0.134  0.903  1.0
  Er  Er28  1  0.910  0.910  0.268  1.0
  Er  Er29  1  0.441  0.441  0.612  1.0
  Er  Er30  1  0.270  0.270  0.930  1.0
  Er  Er31  1  0.304  0.304  0.600  1.0
  Er  Er32  1  0.000  0.000  0.500  1.0
  Er  Er33  1  0.268  0.268  0.415  1.0
  Te  Te34  1  0.750  0.750  0.253  1.0
  Te  Te35  1  0.074  0.074  0.546  1.0
  Te  Te36  1  0.250  0.250  0.747  1.0
  Te  Te37  1  0.076  0.076  0.045  1.0
  Te  Te38  1  0.926  0.926  0.454  1.0
  Te  Te39  1  0.924  0.924  0.955  1.0
  Ru  Ru40  1  0.977  0.977  0.189  1.0
  Ru  Ru41  1  0.362  0.362  0.723  1.0
  Ru  Ru42  1  0.025  0.025  0.308  1.0
  Ru  Ru43  1  0.638  0.638  0.277  1.0
  Ru  Ru44  1  0.191  0.191  0.006  1.0
  Ru  Ru45  1  0.809  0.809  0.994  1.0
  Ru  Ru46  1  0.635  0.635  0.779  1.0
  Ru  Ru47  1  0.188  0.188  0.522  1.0
  Ru  Ru48  1  0.023  0.023  0.811  1.0
  Ru  Ru49  1  0.812  0.812  0.478  1.0
  Ru  Ru50  1  0.365  0.365  0.221  1.0
  Ru  Ru51  1  0.975  0.975  0.692  1.0
[/CIF]
.
The material structure described by Er17Ru6Te3 crystallizes in the monoclinic C2/m space group. There are eighteen inequivalent Er sites. In the first Er site, Er(1) is bonded in a 4-coordinate geometry to three equivalent Ru(4) and one Te(1) atom. In the second Er site, Er(2) is bonded in a 5-coordinate geometry to one Ru(2), two equivalent Ru(4), and two equivalent Te(3) atoms. In the third Er site, Er(3) is bonded in a 2-coordinate geometry to three equivalent Ru(6) and two equivalent Te(1) atoms. In the fourth Er site, Er(4) is bonded to one Ru(4), two equivalent Ru(5), and one Te(3) atom to form a mixture of distorted edge and corner-sharing ErTeRu3 tetrahedra. In the fifth Er site, Er(5) is bonded in a 2-coordinate geometry to one Ru(4), two equivalent Ru(2), and two equivalent Te(1) atoms. In the sixth Er site, Er(6) is bonded in a 4-coordinate geometry to one Ru(6), two equivalent Ru(2), and one Te(2) atom. In the seventh Er site, Er(7) is bonded in a 6-coordinate geometry to two equivalent Ru(1), two equivalent Ru(3), and two equivalent Te(3) atoms. In the eighth Er site, Er(8) is bonded in a 2-coordinate geometry to one Ru(5), two equivalent Ru(1), and two equivalent Te(3) atoms. In the ninth Er site, Er(9) is bonded in a 2-coordinate geometry to one Ru(2), two equivalent Ru(3), and two equivalent Te(2) atoms. In the tenth Er site, Er(10) is bonded to one Ru(3), two equivalent Ru(2), and one Te(3) atom to form distorted corner-sharing ErTeRu3 tetrahedra. In the eleventh Er site, Er(11) is bonded to one Ru(1), two equivalent Ru(5), and one Te(2) atom to form a mixture of distorted edge and corner-sharing ErTeRu3 tetrahedra. In the twelfth Er site, Er(12) is bonded in a 5-coordinate geometry to one Ru(5), two equivalent Ru(6), and two equivalent Te(2) atoms. In the thirteenth Er site, Er(13) is bonded in a 6-coordinate geometry to two equivalent Ru(1), two equivalent Ru(3), and two equivalent Te(2) atoms. In the fourteenth Er site, Er(14) is bonded in a 4-coordinate geometry to one Ru(2), two equivalent Ru(6), and one Te(1) atom. In the fifteenth Er site, Er(15) is bonded in a 5-coordinate geometry to one Ru(5), two equivalent Ru(4), and two equivalent Te(1) atoms. In the sixteenth Er site, Er(16) is bonded to one Ru(6), two equivalent Ru(5), and one Te(1) atom to form a mixture of distorted edge and corner-sharing ErTeRu3 tetrahedra. In the seventeenth Er site, Er(17) is bonded in a square co-planar geometry to two equivalent Ru(1) and two equivalent Te(3) atoms. In the eighteenth Er site, Er(18) is bonded in a square co-planar geometry to two equivalent Ru(3) and two equivalent Te(2) atoms. There are six inequivalent Ru sites. In the first Ru site, Ru(1) is bonded in a 8-coordinate geometry to one Er(11), one Er(17), two equivalent Er(13), two equivalent Er(7), two equivalent Er(8), and one Ru(3) atom. In the second Ru site, Ru(2) is bonded in a 9-coordinate geometry to one Er(14), one Er(2), one Er(9), two equivalent Er(10), two equivalent Er(5), and two equivalent Er(6) atoms. In the third Ru site, Ru(3) is bonded in a 9-coordinate geometry to one Er(10), one Er(18), two equivalent Er(13), two equivalent Er(7), two equivalent Er(9), and one Ru(1) atom. In the fourth Ru site, Ru(4) is bonded in a 9-coordinate geometry to one Er(4), one Er(5), two equivalent Er(15), two equivalent Er(2), and three equivalent Er(1) atoms. In the fifth Ru site, Ru(5) is bonded in a 9-coordinate geometry to one Er(12), one Er(15), one Er(8), two equivalent Er(11), two equivalent Er(16), and two equivalent Er(4) atoms. In the sixth Ru site, Ru(6) is bonded in a 9-coordinate geometry to one Er(16), one Er(6), two equivalent Er(12), two equivalent Er(14), and three equivalent Er(3) atoms. There are three inequivalent Te sites. In the first Te site, Te(1) is bonded in a 9-coordinate geometry to one Er(1), one Er(14), one Er(16), two equivalent Er(15), two equivalent Er(3), and two equivalent Er(5) atoms. In the second Te site, Te(2) is bonded in a 9-coordinate geometry to one Er(11), one Er(18), one Er(6), two equivalent Er(12), two equivalent Er(13), and two equivalent Er(9) atoms. In the third Te site, Te(3) is bonded in a 9-coordinate geometry to one Er(10), one Er(17), one Er(4), two equivalent Er(2), two equivalent Er(7), and two equivalent Er(8) atoms. is represented by the CIF card [CIF]
data_Er17(TeRu2)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   20.315
_cell_length_b   20.315
_cell_length_c   16.196
_cell_angle_alpha   84.797
_cell_angle_beta   84.797
_cell_angle_gamma   11.285
_symmetry_Int_Tables_number   1
_cell_volume   1302.532
_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
  Er  Er0  1  0.730  0.730  0.070  1.0
  Er  Er1  1  0.356  0.356  0.922  1.0
  Er  Er2  1  0.732  0.732  0.585  1.0
  Er  Er3  1  0.866  0.866  0.097  1.0
  Er  Er4  1  0.815  0.815  0.781  1.0
  Er  Er5  1  0.869  0.869  0.597  1.0
  Er  Er6  1  0.185  0.185  0.219  1.0
  Er  Er7  1  0.473  0.473  0.836  1.0
  Er  Er8  1  0.558  0.558  0.889  1.0
  Er  Er9  1  0.131  0.131  0.403  1.0
  Er  Er10  1  0.559  0.559  0.388  1.0
  Er  Er11  1  0.907  0.907  0.771  1.0
  Er  Er12  1  0.527  0.527  0.164  1.0
  Er  Er13  1  0.090  0.090  0.732  1.0
  Er  Er14  1  0.361  0.361  0.422  1.0
  Er  Er15  1  0.639  0.639  0.578  1.0
  Er  Er16  1  0.644  0.644  0.078  1.0
  Er  Er17  1  0.475  0.475  0.334  1.0
  Er  Er18  1  0.696  0.696  0.400  1.0
  Er  Er19  1  0.442  0.442  0.111  1.0
  Er  Er20  1  0.702  0.702  0.876  1.0
  Er  Er21  1  0.298  0.298  0.124  1.0
  Er  Er22  1  0.176  0.176  0.708  1.0
  Er  Er23  1  0.525  0.525  0.666  1.0
  Er  Er24  1  0.000  0.000  0.000  1.0
  Er  Er25  1  0.093  0.093  0.229  1.0
  Er  Er26  1  0.824  0.824  0.292  1.0
  Er  Er27  1  0.134  0.134  0.903  1.0
  Er  Er28  1  0.910  0.910  0.268  1.0
  Er  Er29  1  0.441  0.441  0.612  1.0
  Er  Er30  1  0.270  0.270  0.930  1.0
  Er  Er31  1  0.304  0.304  0.600  1.0
  Er  Er32  1  0.000  0.000  0.500  1.0
  Er  Er33  1  0.268  0.268  0.415  1.0
  Te  Te34  1  0.750  0.750  0.253  1.0
  Te  Te35  1  0.074  0.074  0.546  1.0
  Te  Te36  1  0.250  0.250  0.747  1.0
  Te  Te37  1  0.076  0.076  0.045  1.0
  Te  Te38  1  0.926  0.926  0.454  1.0
  Te  Te39  1  0.924  0.924  0.955  1.0
  Ru  Ru40  1  0.977  0.977  0.189  1.0
  Ru  Ru41  1  0.362  0.362  0.723  1.0
  Ru  Ru42  1  0.025  0.025  0.308  1.0
  Ru  Ru43  1  0.638  0.638  0.277  1.0
  Ru  Ru44  1  0.191  0.191  0.006  1.0
  Ru  Ru45  1  0.809  0.809  0.994  1.0
  Ru  Ru46  1  0.635  0.635  0.779  1.0
  Ru  Ru47  1  0.188  0.188  0.522  1.0
  Ru  Ru48  1  0.023  0.023  0.811  1.0
  Ru  Ru49  1  0.812  0.812  0.478  1.0
  Ru  Ru50  1  0.365  0.365  0.221  1.0
  Ru  Ru51  1  0.975  0.975  0.692  1.0
[/CIF]
.