The crystal structure described by Gd2TiO5 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded to one O(1), one O(5), two equivalent O(2), and three equivalent O(3) atoms to form distorted GdO7 hexagonal pyramids that share corners with two equivalent Gd(2)O7 hexagonal pyramids,  a cornercorner with one Ti(1)O5 trigonal bipyramid, edges with three equivalent Gd(2)O7 hexagonal pyramids, edges with four equivalent Gd(1)O7 hexagonal pyramids, and edges with two equivalent Ti(1)O5 trigonal bipyramids. In the second Gd site, Gd(2) is bonded to one O(2), one O(3), one O(5), two equivalent O(1), and two equivalent O(4) atoms to form distorted GdO7 hexagonal pyramids that share corners with two equivalent Gd(1)O7 hexagonal pyramids, corners with three equivalent Ti(1)O5 trigonal bipyramids, edges with two equivalent Gd(2)O7 hexagonal pyramids, edges with three equivalent Gd(1)O7 hexagonal pyramids, and edges with two equivalent Ti(1)O5 trigonal bipyramids. Ti(1) is bonded to one O(1), one O(2), one O(4), and two equivalent O(5) atoms to form distorted TiO5 trigonal bipyramids that share  a cornercorner with one Gd(1)O7 hexagonal pyramid, corners with three equivalent Gd(2)O7 hexagonal pyramids, corners with two equivalent Ti(1)O5 trigonal bipyramids, edges with two equivalent Gd(1)O7 hexagonal pyramids, and edges with two equivalent Gd(2)O7 hexagonal pyramids. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Gd(1), two equivalent Gd(2), and one Ti(1) atom to form OGd3Ti tetrahedra that share  a cornercorner with one O(5)Gd2Ti2 tetrahedra,  a cornercorner with one O(2)Gd3Ti tetrahedra, corners with two equivalent O(1)Gd3Ti tetrahedra, corners with five equivalent O(3)Gd4 tetrahedra, edges with two equivalent O(5)Gd2Ti2 tetrahedra, and edges with two equivalent O(2)Gd3Ti tetrahedra. In the second O site, O(2) is bonded to one Gd(2), two equivalent Gd(1), and one Ti(1) atom to form OGd3Ti tetrahedra that share  a cornercorner with one O(5)Gd2Ti2 tetrahedra,  a cornercorner with one O(1)Gd3Ti tetrahedra, corners with two equivalent O(2)Gd3Ti tetrahedra, corners with five equivalent O(3)Gd4 tetrahedra,  an edgeedge with one O(3)Gd4 tetrahedra, edges with two equivalent O(5)Gd2Ti2 tetrahedra, and edges with two equivalent O(1)Gd3Ti tetrahedra. In the third O site, O(3) is bonded to one Gd(2) and three equivalent Gd(1) atoms to form OGd4 tetrahedra that share corners with two equivalent O(5)Gd2Ti2 tetrahedra, corners with two equivalent O(3)Gd4 tetrahedra, corners with five equivalent O(1)Gd3Ti tetrahedra, corners with five equivalent O(2)Gd3Ti tetrahedra,  an edgeedge with one O(5)Gd2Ti2 tetrahedra,  an edgeedge with one O(2)Gd3Ti tetrahedra, and edges with two equivalent O(3)Gd4 tetrahedra. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Gd(2) and one Ti(1) atom. In the fifth O site, O(5) is bonded to one Gd(1), one Gd(2), and two equivalent Ti(1) atoms to form distorted OGd2Ti2 tetrahedra that share  a cornercorner with one O(1)Gd3Ti tetrahedra,  a cornercorner with one O(2)Gd3Ti tetrahedra, corners with two equivalent O(5)Gd2Ti2 tetrahedra, corners with two equivalent O(3)Gd4 tetrahedra,  an edgeedge with one O(3)Gd4 tetrahedra, edges with two equivalent O(1)Gd3Ti tetrahedra, and edges with two equivalent O(2)Gd3Ti tetrahedra. is represented by the CIF card [CIF]
data_Gd2TiO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.746
_cell_length_b   10.498
_cell_length_c   11.344
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   446.089
_cell_formula_units_Z   4
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  0.750  0.363  0.443  1.0
  Gd  Gd1  1  0.250  0.637  0.557  1.0
  Gd  Gd2  1  0.750  0.888  0.722  1.0
  Gd  Gd3  1  0.750  0.388  0.778  1.0
  Gd  Gd4  1  0.250  0.112  0.278  1.0
  Gd  Gd5  1  0.250  0.612  0.222  1.0
  Gd  Gd6  1  0.750  0.863  0.057  1.0
  Gd  Gd7  1  0.250  0.137  0.943  1.0
  Ti  Ti8  1  0.250  0.177  0.621  1.0
  Ti  Ti9  1  0.750  0.323  0.121  1.0
  Ti  Ti10  1  0.750  0.823  0.379  1.0
  Ti  Ti11  1  0.250  0.677  0.879  1.0
  O  O12  1  0.750  0.240  0.270  1.0
  O  O13  1  0.250  0.260  0.770  1.0
  O  O14  1  0.250  0.224  0.459  1.0
  O  O15  1  0.750  0.007  0.896  1.0
  O  O16  1  0.750  0.988  0.344  1.0
  O  O17  1  0.250  0.493  0.396  1.0
  O  O18  1  0.750  0.507  0.604  1.0
  O  O19  1  0.750  0.776  0.541  1.0
  O  O20  1  0.250  0.765  0.382  1.0
  O  O21  1  0.750  0.735  0.882  1.0
  O  O22  1  0.750  0.276  0.959  1.0
  O  O23  1  0.750  0.488  0.156  1.0
  O  O24  1  0.250  0.265  0.118  1.0
  O  O25  1  0.250  0.012  0.656  1.0
  O  O26  1  0.750  0.235  0.618  1.0
  O  O27  1  0.250  0.993  0.104  1.0
  O  O28  1  0.750  0.740  0.230  1.0
  O  O29  1  0.250  0.724  0.041  1.0
  O  O30  1  0.250  0.512  0.844  1.0
  O  O31  1  0.250  0.760  0.730  1.0
[/CIF]
.
The crystal structure described by Gd2TiO5 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded to one O(1), one O(5), two equivalent O(2), and three equivalent O(3) atoms to form distorted GdO7 hexagonal pyramids that share corners with two equivalent Gd(2)O7 hexagonal pyramids,  a cornercorner with one Ti(1)O5 trigonal bipyramid, edges with three equivalent Gd(2)O7 hexagonal pyramids, edges with four equivalent Gd(1)O7 hexagonal pyramids, and edges with two equivalent Ti(1)O5 trigonal bipyramids. In the second Gd site, Gd(2) is bonded to one O(2), one O(3), one O(5), two equivalent O(1), and two equivalent O(4) atoms to form distorted GdO7 hexagonal pyramids that share corners with two equivalent Gd(1)O7 hexagonal pyramids, corners with three equivalent Ti(1)O5 trigonal bipyramids, edges with two equivalent Gd(2)O7 hexagonal pyramids, edges with three equivalent Gd(1)O7 hexagonal pyramids, and edges with two equivalent Ti(1)O5 trigonal bipyramids. Ti(1) is bonded to one O(1), one O(2), one O(4), and two equivalent O(5) atoms to form distorted TiO5 trigonal bipyramids that share  a cornercorner with one Gd(1)O7 hexagonal pyramid, corners with three equivalent Gd(2)O7 hexagonal pyramids, corners with two equivalent Ti(1)O5 trigonal bipyramids, edges with two equivalent Gd(1)O7 hexagonal pyramids, and edges with two equivalent Gd(2)O7 hexagonal pyramids. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Gd(1), two equivalent Gd(2), and one Ti(1) atom to form OGd3Ti tetrahedra that share  a cornercorner with one O(5)Gd2Ti2 tetrahedra,  a cornercorner with one O(2)Gd3Ti tetrahedra, corners with two equivalent O(1)Gd3Ti tetrahedra, corners with five equivalent O(3)Gd4 tetrahedra, edges with two equivalent O(5)Gd2Ti2 tetrahedra, and edges with two equivalent O(2)Gd3Ti tetrahedra. In the second O site, O(2) is bonded to one Gd(2), two equivalent Gd(1), and one Ti(1) atom to form OGd3Ti tetrahedra that share  a cornercorner with one O(5)Gd2Ti2 tetrahedra,  a cornercorner with one O(1)Gd3Ti tetrahedra, corners with two equivalent O(2)Gd3Ti tetrahedra, corners with five equivalent O(3)Gd4 tetrahedra,  an edgeedge with one O(3)Gd4 tetrahedra, edges with two equivalent O(5)Gd2Ti2 tetrahedra, and edges with two equivalent O(1)Gd3Ti tetrahedra. In the third O site, O(3) is bonded to one Gd(2) and three equivalent Gd(1) atoms to form OGd4 tetrahedra that share corners with two equivalent O(5)Gd2Ti2 tetrahedra, corners with two equivalent O(3)Gd4 tetrahedra, corners with five equivalent O(1)Gd3Ti tetrahedra, corners with five equivalent O(2)Gd3Ti tetrahedra,  an edgeedge with one O(5)Gd2Ti2 tetrahedra,  an edgeedge with one O(2)Gd3Ti tetrahedra, and edges with two equivalent O(3)Gd4 tetrahedra. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Gd(2) and one Ti(1) atom. In the fifth O site, O(5) is bonded to one Gd(1), one Gd(2), and two equivalent Ti(1) atoms to form distorted OGd2Ti2 tetrahedra that share  a cornercorner with one O(1)Gd3Ti tetrahedra,  a cornercorner with one O(2)Gd3Ti tetrahedra, corners with two equivalent O(5)Gd2Ti2 tetrahedra, corners with two equivalent O(3)Gd4 tetrahedra,  an edgeedge with one O(3)Gd4 tetrahedra, edges with two equivalent O(1)Gd3Ti tetrahedra, and edges with two equivalent O(2)Gd3Ti tetrahedra. is represented by the CIF card [CIF]
data_Gd2TiO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.746
_cell_length_b   10.498
_cell_length_c   11.344
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   446.089
_cell_formula_units_Z   4
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  0.750  0.363  0.443  1.0
  Gd  Gd1  1  0.250  0.637  0.557  1.0
  Gd  Gd2  1  0.750  0.888  0.722  1.0
  Gd  Gd3  1  0.750  0.388  0.778  1.0
  Gd  Gd4  1  0.250  0.112  0.278  1.0
  Gd  Gd5  1  0.250  0.612  0.222  1.0
  Gd  Gd6  1  0.750  0.863  0.057  1.0
  Gd  Gd7  1  0.250  0.137  0.943  1.0
  Ti  Ti8  1  0.250  0.177  0.621  1.0
  Ti  Ti9  1  0.750  0.323  0.121  1.0
  Ti  Ti10  1  0.750  0.823  0.379  1.0
  Ti  Ti11  1  0.250  0.677  0.879  1.0
  O  O12  1  0.750  0.240  0.270  1.0
  O  O13  1  0.250  0.260  0.770  1.0
  O  O14  1  0.250  0.224  0.459  1.0
  O  O15  1  0.750  0.007  0.896  1.0
  O  O16  1  0.750  0.988  0.344  1.0
  O  O17  1  0.250  0.493  0.396  1.0
  O  O18  1  0.750  0.507  0.604  1.0
  O  O19  1  0.750  0.776  0.541  1.0
  O  O20  1  0.250  0.765  0.382  1.0
  O  O21  1  0.750  0.735  0.882  1.0
  O  O22  1  0.750  0.276  0.959  1.0
  O  O23  1  0.750  0.488  0.156  1.0
  O  O24  1  0.250  0.265  0.118  1.0
  O  O25  1  0.250  0.012  0.656  1.0
  O  O26  1  0.750  0.235  0.618  1.0
  O  O27  1  0.250  0.993  0.104  1.0
  O  O28  1  0.750  0.740  0.230  1.0
  O  O29  1  0.250  0.724  0.041  1.0
  O  O30  1  0.250  0.512  0.844  1.0
  O  O31  1  0.250  0.760  0.730  1.0
[/CIF]
.