The compound described by Er3Pd7P4 crystallizes in the monoclinic C2/m space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 6-coordinate geometry to two equivalent Pd(1), four equivalent Pd(2), four equivalent Pd(4), two equivalent P(1), and four equivalent P(2) atoms. In the second Er site, Er(2) is bonded in a 14-coordinate geometry to two equivalent Pd(2), two equivalent Pd(3), three equivalent Pd(1), three equivalent Pd(4), two equivalent P(1), and two equivalent P(2) atoms. There are four inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 12-coordinate geometry to one Er(1), three equivalent Er(2), one Pd(3), two equivalent Pd(1), two equivalent Pd(2), and three equivalent P(2) atoms. In the second Pd site, Pd(2) is bonded to two equivalent Er(1), two equivalent Er(2), one Pd(4), two equivalent Pd(1), two equivalent Pd(3), one P(2), and two equivalent P(1) atoms to form distorted PdEr4P3Pd5 cuboctahedra that share corners with four equivalent Pd(2)Er4P3Pd5 cuboctahedra,  an edgeedge with one Pd(2)Er4P3Pd5 cuboctahedra, faces with two equivalent Pd(3)Er4P2Pd6 cuboctahedra, and faces with three equivalent Pd(2)Er4P3Pd5 cuboctahedra. In the third Pd site, Pd(3) is bonded to four equivalent Er(2), two equivalent Pd(1), four equivalent Pd(2), and two equivalent P(1) atoms to form distorted PdEr4P2Pd6 cuboctahedra that share faces with two equivalent Pd(3)Er4P2Pd6 cuboctahedra and faces with four equivalent Pd(2)Er4P3Pd5 cuboctahedra. In the fourth Pd site, Pd(4) is bonded in a 12-coordinate geometry to two equivalent Er(1), three equivalent Er(2), one Pd(2), two equivalent Pd(4), one P(2), and three equivalent P(1) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to one Er(1), two equivalent Er(2), one Pd(3), two equivalent Pd(2), and three equivalent Pd(4) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to two equivalent Er(1), two equivalent Er(2), one Pd(2), one Pd(4), and three equivalent Pd(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er3P4Pd7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.967
_cell_length_b   7.865
_cell_length_c   8.145
_cell_angle_alpha   71.275
_cell_angle_beta   75.906
_cell_angle_gamma   75.394
_symmetry_Int_Tables_number   1
_cell_volume   229.230
_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
  Er  Er0  1  0.500  0.500  0.500  1.0
  Er  Er1  1  0.180  0.815  0.824  1.0
  Er  Er2  1  0.820  0.185  0.176  1.0
  P  P3  1  0.606  0.107  0.681  1.0
  P  P4  1  0.394  0.893  0.319  1.0
  P  P5  1  0.159  0.434  0.249  1.0
  P  P6  1  0.841  0.566  0.751  1.0
  Pd  Pd7  1  0.332  0.415  0.921  1.0
  Pd  Pd8  1  0.990  0.235  0.785  1.0
  Pd  Pd9  1  0.010  0.765  0.215  1.0
  Pd  Pd10  1  0.500  0.000  0.000  1.0
  Pd  Pd11  1  0.804  0.861  0.531  1.0
  Pd  Pd12  1  0.196  0.139  0.469  1.0
  Pd  Pd13  1  0.668  0.585  0.079  1.0
[/CIF]
.
The compound described by Er3Pd7P4 crystallizes in the monoclinic C2/m space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 6-coordinate geometry to two equivalent Pd(1), four equivalent Pd(2), four equivalent Pd(4), two equivalent P(1), and four equivalent P(2) atoms. In the second Er site, Er(2) is bonded in a 14-coordinate geometry to two equivalent Pd(2), two equivalent Pd(3), three equivalent Pd(1), three equivalent Pd(4), two equivalent P(1), and two equivalent P(2) atoms. There are four inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 12-coordinate geometry to one Er(1), three equivalent Er(2), one Pd(3), two equivalent Pd(1), two equivalent Pd(2), and three equivalent P(2) atoms. In the second Pd site, Pd(2) is bonded to two equivalent Er(1), two equivalent Er(2), one Pd(4), two equivalent Pd(1), two equivalent Pd(3), one P(2), and two equivalent P(1) atoms to form distorted PdEr4P3Pd5 cuboctahedra that share corners with four equivalent Pd(2)Er4P3Pd5 cuboctahedra,  an edgeedge with one Pd(2)Er4P3Pd5 cuboctahedra, faces with two equivalent Pd(3)Er4P2Pd6 cuboctahedra, and faces with three equivalent Pd(2)Er4P3Pd5 cuboctahedra. In the third Pd site, Pd(3) is bonded to four equivalent Er(2), two equivalent Pd(1), four equivalent Pd(2), and two equivalent P(1) atoms to form distorted PdEr4P2Pd6 cuboctahedra that share faces with two equivalent Pd(3)Er4P2Pd6 cuboctahedra and faces with four equivalent Pd(2)Er4P3Pd5 cuboctahedra. In the fourth Pd site, Pd(4) is bonded in a 12-coordinate geometry to two equivalent Er(1), three equivalent Er(2), one Pd(2), two equivalent Pd(4), one P(2), and three equivalent P(1) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to one Er(1), two equivalent Er(2), one Pd(3), two equivalent Pd(2), and three equivalent Pd(4) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to two equivalent Er(1), two equivalent Er(2), one Pd(2), one Pd(4), and three equivalent Pd(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er3P4Pd7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.967
_cell_length_b   7.865
_cell_length_c   8.145
_cell_angle_alpha   71.275
_cell_angle_beta   75.906
_cell_angle_gamma   75.394
_symmetry_Int_Tables_number   1
_cell_volume   229.230
_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
  Er  Er0  1  0.500  0.500  0.500  1.0
  Er  Er1  1  0.180  0.815  0.824  1.0
  Er  Er2  1  0.820  0.185  0.176  1.0
  P  P3  1  0.606  0.107  0.681  1.0
  P  P4  1  0.394  0.893  0.319  1.0
  P  P5  1  0.159  0.434  0.249  1.0
  P  P6  1  0.841  0.566  0.751  1.0
  Pd  Pd7  1  0.332  0.415  0.921  1.0
  Pd  Pd8  1  0.990  0.235  0.785  1.0
  Pd  Pd9  1  0.010  0.765  0.215  1.0
  Pd  Pd10  1  0.500  0.000  0.000  1.0
  Pd  Pd11  1  0.804  0.861  0.531  1.0
  Pd  Pd12  1  0.196  0.139  0.469  1.0
  Pd  Pd13  1  0.668  0.585  0.079  1.0
[/CIF]
.