The structure described by Gd2P4O13 crystallizes in the monoclinic C2/c space group. Gd(1) is bonded in a 8-coordinate geometry to one O(2), one O(6), two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(3), and one O(7) atom to form corner-sharing PO4 tetrahedra. In the second P site, P(2) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form corner-sharing PO4 tetrahedra. There are seven inequivalent O sites. In the first O site, O(7) is bonded in a bent 120 degrees geometry to two equivalent P(1) atoms. In the second O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Gd(1) and one P(1) atom. In the third O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Gd(1) and one P(1) atom. In the fourth O site, O(3) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. In the fifth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Gd(1) and one P(2) atom. In the sixth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Gd(1) and one P(2) atom. In the seventh O site, O(6) is bonded in a bent 150 degrees geometry to one Gd(1) and one P(2) atom. is represented by the CIF file [CIF]
data_Gd2P4O13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.936
_cell_length_b   6.936
_cell_length_c   13.132
_cell_angle_alpha   76.244
_cell_angle_beta   76.244
_cell_angle_gamma   59.230
_symmetry_Int_Tables_number   1
_cell_volume   522.139
_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
  Gd  Gd0  1  0.312  0.307  0.051  1.0
  Gd  Gd1  1  0.693  0.688  0.449  1.0
  Gd  Gd2  1  0.307  0.312  0.551  1.0
  Gd  Gd3  1  0.688  0.693  0.949  1.0
  P  P4  1  0.156  0.865  0.135  1.0
  P  P5  1  0.865  0.156  0.635  1.0
  P  P6  1  0.774  0.761  0.159  1.0
  P  P7  1  0.239  0.226  0.341  1.0
  P  P8  1  0.761  0.774  0.659  1.0
  P  P9  1  0.226  0.239  0.841  1.0
  P  P10  1  0.135  0.844  0.365  1.0
  P  P11  1  0.844  0.135  0.865  1.0
  O  O12  1  0.321  0.686  0.063  1.0
  O  O13  1  0.122  0.101  0.104  1.0
  O  O14  1  0.686  0.321  0.563  1.0
  O  O15  1  0.101  0.093  0.346  1.0
  O  O16  1  0.925  0.565  0.094  1.0
  O  O17  1  0.576  0.924  0.095  1.0
  O  O18  1  0.706  0.694  0.274  1.0
  O  O19  1  0.101  0.122  0.604  1.0
  O  O20  1  0.093  0.101  0.846  1.0
  O  O21  1  0.306  0.294  0.226  1.0
  O  O22  1  0.076  0.424  0.405  1.0
  O  O23  1  0.435  0.075  0.406  1.0
  O  O24  1  0.565  0.925  0.594  1.0
  O  O25  1  0.924  0.576  0.595  1.0
  O  O26  1  0.694  0.706  0.774  1.0
  O  O27  1  0.907  0.899  0.154  1.0
  O  O28  1  0.899  0.878  0.396  1.0
  O  O29  1  0.294  0.306  0.726  1.0
  O  O30  1  0.424  0.076  0.905  1.0
  O  O31  1  0.075  0.435  0.906  1.0
  O  O32  1  0.240  0.760  0.250  1.0
  O  O33  1  0.899  0.907  0.654  1.0
  O  O34  1  0.314  0.679  0.437  1.0
  O  O35  1  0.878  0.899  0.896  1.0
  O  O36  1  0.760  0.240  0.750  1.0
  O  O37  1  0.679  0.314  0.937  1.0
[/CIF]
.
The structure described by Gd2P4O13 crystallizes in the monoclinic C2/c space group. Gd(1) is bonded in a 8-coordinate geometry to one O(2), one O(6), two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(3), and one O(7) atom to form corner-sharing PO4 tetrahedra. In the second P site, P(2) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form corner-sharing PO4 tetrahedra. There are seven inequivalent O sites. In the first O site, O(7) is bonded in a bent 120 degrees geometry to two equivalent P(1) atoms. In the second O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Gd(1) and one P(1) atom. In the third O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Gd(1) and one P(1) atom. In the fourth O site, O(3) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. In the fifth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Gd(1) and one P(2) atom. In the sixth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Gd(1) and one P(2) atom. In the seventh O site, O(6) is bonded in a bent 150 degrees geometry to one Gd(1) and one P(2) atom. is represented by the CIF file [CIF]
data_Gd2P4O13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.936
_cell_length_b   6.936
_cell_length_c   13.132
_cell_angle_alpha   76.244
_cell_angle_beta   76.244
_cell_angle_gamma   59.230
_symmetry_Int_Tables_number   1
_cell_volume   522.139
_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
  Gd  Gd0  1  0.312  0.307  0.051  1.0
  Gd  Gd1  1  0.693  0.688  0.449  1.0
  Gd  Gd2  1  0.307  0.312  0.551  1.0
  Gd  Gd3  1  0.688  0.693  0.949  1.0
  P  P4  1  0.156  0.865  0.135  1.0
  P  P5  1  0.865  0.156  0.635  1.0
  P  P6  1  0.774  0.761  0.159  1.0
  P  P7  1  0.239  0.226  0.341  1.0
  P  P8  1  0.761  0.774  0.659  1.0
  P  P9  1  0.226  0.239  0.841  1.0
  P  P10  1  0.135  0.844  0.365  1.0
  P  P11  1  0.844  0.135  0.865  1.0
  O  O12  1  0.321  0.686  0.063  1.0
  O  O13  1  0.122  0.101  0.104  1.0
  O  O14  1  0.686  0.321  0.563  1.0
  O  O15  1  0.101  0.093  0.346  1.0
  O  O16  1  0.925  0.565  0.094  1.0
  O  O17  1  0.576  0.924  0.095  1.0
  O  O18  1  0.706  0.694  0.274  1.0
  O  O19  1  0.101  0.122  0.604  1.0
  O  O20  1  0.093  0.101  0.846  1.0
  O  O21  1  0.306  0.294  0.226  1.0
  O  O22  1  0.076  0.424  0.405  1.0
  O  O23  1  0.435  0.075  0.406  1.0
  O  O24  1  0.565  0.925  0.594  1.0
  O  O25  1  0.924  0.576  0.595  1.0
  O  O26  1  0.694  0.706  0.774  1.0
  O  O27  1  0.907  0.899  0.154  1.0
  O  O28  1  0.899  0.878  0.396  1.0
  O  O29  1  0.294  0.306  0.726  1.0
  O  O30  1  0.424  0.076  0.905  1.0
  O  O31  1  0.075  0.435  0.906  1.0
  O  O32  1  0.240  0.760  0.250  1.0
  O  O33  1  0.899  0.907  0.654  1.0
  O  O34  1  0.314  0.679  0.437  1.0
  O  O35  1  0.878  0.899  0.896  1.0
  O  O36  1  0.760  0.240  0.750  1.0
  O  O37  1  0.679  0.314  0.937  1.0
[/CIF]
.