The material described by LiSrAl2B2O7 crystallizes in the triclinic P1 space group. Li(1) is bonded in a 3-coordinate geometry to one O(4), one O(6), and one O(7) atom. Sr(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(5), one O(6), and one O(7) atom. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form corner-sharing AlO4 tetrahedra. In the second Al site, Al(2) is bonded to one O(4), one O(5), one O(6), and one O(7) atom to form corner-sharing AlO4 tetrahedra. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(5), one O(6), and one O(7) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Sr(1), one Al(1), and one B(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Sr(1), one Al(1), and one B(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Sr(1), one Al(1), and one B(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Li(1), one Al(1), and one Al(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Sr(1), one Al(2), and one B(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Li(1), one Sr(1), one Al(2), and one B(1) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Li(1), one Sr(1), one Al(2), and one B(1) atom. is represented by the CIF file [CIF]
data_SrLiAl2B2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.649
_cell_length_b   8.625
_cell_length_c   8.925
_cell_angle_alpha   32.586
_cell_angle_beta   32.453
_cell_angle_gamma   32.951
_symmetry_Int_Tables_number   1
_cell_volume   172.450
_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
  Sr  Sr0  1  0.010  0.001  0.000  1.0
  Li  Li1  1  0.775  0.836  0.980  1.0
  Al  Al2  1  0.444  0.463  0.388  1.0
  Al  Al3  1  0.557  0.539  0.597  1.0
  B  B4  1  0.261  0.229  0.292  1.0
  B  B5  1  0.742  0.757  0.712  1.0
  O  O6  1  0.043  0.691  0.465  1.0
  O  O7  1  0.493  0.062  0.653  1.0
  O  O8  1  0.668  0.506  0.014  1.0
  O  O9  1  0.549  0.580  0.375  1.0
  O  O10  1  0.314  0.935  0.552  1.0
  O  O11  1  0.522  0.250  0.990  1.0
  O  O12  1  0.967  0.495  0.333  1.0
[/CIF]
.
The material described by LiSrAl2B2O7 crystallizes in the triclinic P1 space group. Li(1) is bonded in a 3-coordinate geometry to one O(4), one O(6), and one O(7) atom. Sr(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(5), one O(6), and one O(7) atom. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form corner-sharing AlO4 tetrahedra. In the second Al site, Al(2) is bonded to one O(4), one O(5), one O(6), and one O(7) atom to form corner-sharing AlO4 tetrahedra. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(5), one O(6), and one O(7) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Sr(1), one Al(1), and one B(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Sr(1), one Al(1), and one B(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Sr(1), one Al(1), and one B(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Li(1), one Al(1), and one Al(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Sr(1), one Al(2), and one B(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Li(1), one Sr(1), one Al(2), and one B(1) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Li(1), one Sr(1), one Al(2), and one B(1) atom. is represented by the CIF file [CIF]
data_SrLiAl2B2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.649
_cell_length_b   8.625
_cell_length_c   8.925
_cell_angle_alpha   32.586
_cell_angle_beta   32.453
_cell_angle_gamma   32.951
_symmetry_Int_Tables_number   1
_cell_volume   172.450
_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
  Sr  Sr0  1  0.010  0.001  0.000  1.0
  Li  Li1  1  0.775  0.836  0.980  1.0
  Al  Al2  1  0.444  0.463  0.388  1.0
  Al  Al3  1  0.557  0.539  0.597  1.0
  B  B4  1  0.261  0.229  0.292  1.0
  B  B5  1  0.742  0.757  0.712  1.0
  O  O6  1  0.043  0.691  0.465  1.0
  O  O7  1  0.493  0.062  0.653  1.0
  O  O8  1  0.668  0.506  0.014  1.0
  O  O9  1  0.549  0.580  0.375  1.0
  O  O10  1  0.314  0.935  0.552  1.0
  O  O11  1  0.522  0.250  0.990  1.0
  O  O12  1  0.967  0.495  0.333  1.0
[/CIF]
.