The structure described by LiTi(Si2O5)2 crystallizes in the orthorhombic Pnc2 space group. Li(1) is bonded in a rectangular see-saw-like geometry to two equivalent O(3) and two equivalent O(4) atoms. Ti(1) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form distorted TiO4 trigonal pyramids that share corners with two equivalent Si(1)O4 tetrahedra and corners with two equivalent Si(2)O4 tetrahedra. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form SiO4 tetrahedra that share  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  a cornercorner with one Ti(1)O4 trigonal pyramid. In the second Si site, Si(2) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form SiO4 tetrahedra that share  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, and  a cornercorner with one Ti(1)O4 trigonal pyramid. There are six inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(2) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Li(1), one Ti(1), and one Si(1) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Li(1), one Ti(1), and one Si(2) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(2) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to two equivalent Si(2) atoms. is represented by the CIF file [CIF]
data_LiTi(Si2O5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.000
_cell_length_b   7.107
_cell_length_c   11.708
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   416.031
_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
  Li  Li0  1  0.500  0.500  0.296  1.0
  Li  Li1  1  0.500  0.000  0.796  1.0
  Ti  Ti2  1  0.000  0.500  0.377  1.0
  Ti  Ti3  1  0.000  0.000  0.877  1.0
  Si  Si4  1  0.083  0.212  0.167  1.0
  Si  Si5  1  0.083  0.288  0.667  1.0
  Si  Si6  1  0.416  0.710  0.014  1.0
  Si  Si7  1  0.416  0.790  0.514  1.0
  Si  Si8  1  0.584  0.290  0.014  1.0
  Si  Si9  1  0.584  0.210  0.514  1.0
  Si  Si10  1  0.917  0.712  0.667  1.0
  Si  Si11  1  0.917  0.788  0.167  1.0
  O  O12  1  0.000  0.000  0.208  1.0
  O  O13  1  0.000  0.500  0.708  1.0
  O  O14  1  0.812  0.312  0.115  1.0
  O  O15  1  0.812  0.188  0.615  1.0
  O  O16  1  0.196  0.335  0.273  1.0
  O  O17  1  0.196  0.165  0.773  1.0
  O  O18  1  0.297  0.662  0.411  1.0
  O  O19  1  0.297  0.838  0.911  1.0
  O  O20  1  0.690  0.809  0.066  1.0
  O  O21  1  0.690  0.691  0.566  1.0
  O  O22  1  0.500  0.500  0.971  1.0
  O  O23  1  0.500  0.000  0.471  1.0
  O  O24  1  0.310  0.309  0.566  1.0
  O  O25  1  0.310  0.191  0.066  1.0
  O  O26  1  0.703  0.338  0.411  1.0
  O  O27  1  0.703  0.162  0.911  1.0
  O  O28  1  0.804  0.835  0.773  1.0
  O  O29  1  0.804  0.665  0.273  1.0
  O  O30  1  0.188  0.812  0.615  1.0
  O  O31  1  0.188  0.688  0.115  1.0
[/CIF]
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The structure described by LiTi(Si2O5)2 crystallizes in the orthorhombic Pnc2 space group. Li(1) is bonded in a rectangular see-saw-like geometry to two equivalent O(3) and two equivalent O(4) atoms. Ti(1) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form distorted TiO4 trigonal pyramids that share corners with two equivalent Si(1)O4 tetrahedra and corners with two equivalent Si(2)O4 tetrahedra. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form SiO4 tetrahedra that share  a cornercorner with one Si(1)O4 tetrahedra, corners with two equivalent Si(2)O4 tetrahedra, and  a cornercorner with one Ti(1)O4 trigonal pyramid. In the second Si site, Si(2) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form SiO4 tetrahedra that share  a cornercorner with one Si(2)O4 tetrahedra, corners with two equivalent Si(1)O4 tetrahedra, and  a cornercorner with one Ti(1)O4 trigonal pyramid. There are six inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to two equivalent Si(1) atoms. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(2) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Li(1), one Ti(1), and one Si(1) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Li(1), one Ti(1), and one Si(2) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Si(1) and one Si(2) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to two equivalent Si(2) atoms. is represented by the CIF file [CIF]
data_LiTi(Si2O5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.000
_cell_length_b   7.107
_cell_length_c   11.708
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   416.031
_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
  Li  Li0  1  0.500  0.500  0.296  1.0
  Li  Li1  1  0.500  0.000  0.796  1.0
  Ti  Ti2  1  0.000  0.500  0.377  1.0
  Ti  Ti3  1  0.000  0.000  0.877  1.0
  Si  Si4  1  0.083  0.212  0.167  1.0
  Si  Si5  1  0.083  0.288  0.667  1.0
  Si  Si6  1  0.416  0.710  0.014  1.0
  Si  Si7  1  0.416  0.790  0.514  1.0
  Si  Si8  1  0.584  0.290  0.014  1.0
  Si  Si9  1  0.584  0.210  0.514  1.0
  Si  Si10  1  0.917  0.712  0.667  1.0
  Si  Si11  1  0.917  0.788  0.167  1.0
  O  O12  1  0.000  0.000  0.208  1.0
  O  O13  1  0.000  0.500  0.708  1.0
  O  O14  1  0.812  0.312  0.115  1.0
  O  O15  1  0.812  0.188  0.615  1.0
  O  O16  1  0.196  0.335  0.273  1.0
  O  O17  1  0.196  0.165  0.773  1.0
  O  O18  1  0.297  0.662  0.411  1.0
  O  O19  1  0.297  0.838  0.911  1.0
  O  O20  1  0.690  0.809  0.066  1.0
  O  O21  1  0.690  0.691  0.566  1.0
  O  O22  1  0.500  0.500  0.971  1.0
  O  O23  1  0.500  0.000  0.471  1.0
  O  O24  1  0.310  0.309  0.566  1.0
  O  O25  1  0.310  0.191  0.066  1.0
  O  O26  1  0.703  0.338  0.411  1.0
  O  O27  1  0.703  0.162  0.911  1.0
  O  O28  1  0.804  0.835  0.773  1.0
  O  O29  1  0.804  0.665  0.273  1.0
  O  O30  1  0.188  0.812  0.615  1.0
  O  O31  1  0.188  0.688  0.115  1.0
[/CIF]
.