The structure described by LiUAsO6 crystallizes in the triclinic P-1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(11), one O(12), one O(7), and one O(8) atom to form LiO4 tetrahedra that share corners with two equivalent U(1)O6 octahedra,  a cornercorner with one As(1)O4 tetrahedra, and corners with two equivalent As(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 60-77°. In the second Li site, Li(2) is bonded to one O(2), one O(3), one O(6), and one O(9) atom to form distorted LiO4 trigonal pyramids that share corners with two equivalent U(1)O6 octahedra,  a cornercorner with one As(2)O4 tetrahedra, and corners with two equivalent As(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 76-79°. There are two inequivalent U sites. In the first U site, U(1) is bonded to one O(1), one O(11), one O(2), one O(4), one O(8), and one O(9) atom to form UO6 octahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent As(1)O4 tetrahedra, corners with two equivalent As(2)O4 tetrahedra, and corners with two equivalent Li(2)O4 trigonal pyramids. In the second U site, U(2) is bonded in a 7-coordinate geometry to one O(10), one O(12), one O(3), one O(6), one O(7), and two equivalent O(5) atoms. There are two inequivalent As sites. In the first As site, As(1) is bonded to one O(11), one O(5), one O(6), and one O(9) atom to form AsO4 tetrahedra that share corners with two equivalent U(1)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, and corners with two equivalent Li(2)O4 trigonal pyramids. The corner-sharing octahedral tilt angles range from 41-55°. In the second As site, As(2) is bonded to one O(10), one O(12), one O(2), and one O(8) atom to form AsO4 tetrahedra that share corners with two equivalent U(1)O6 octahedra, corners with two equivalent Li(1)O4 tetrahedra, and  a cornercorner with one Li(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 44-48°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one U(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Li(2), one U(1), and one As(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Li(2) and one U(2) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one U(1) atom. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to two equivalent U(2) and one As(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Li(2), one U(2), and one As(1) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Li(1) and one U(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Li(1), one U(1), and one As(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Li(2), one U(1), and one As(1) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one U(2) and one As(2) atom. In the eleventh O site, O(11) is bonded in a trigonal planar geometry to one Li(1), one U(1), and one As(1) atom. In the twelfth O site, O(12) is bonded in a trigonal planar geometry to one Li(1), one U(2), and one As(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_LiUAsO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.236
_cell_length_b   10.291
_cell_length_c   11.212
_cell_angle_alpha   65.094
_cell_angle_beta   76.780
_cell_angle_gamma   76.479
_symmetry_Int_Tables_number   1
_cell_volume   526.981
_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
  Li  Li0  1  0.546  0.377  0.769  1.0
  Li  Li1  1  0.454  0.623  0.231  1.0
  Li  Li2  1  0.458  0.093  0.295  1.0
  Li  Li3  1  0.542  0.907  0.705  1.0
  U  U4  1  0.499  0.280  0.479  1.0
  U  U5  1  0.982  0.798  0.982  1.0
  U  U6  1  0.501  0.720  0.521  1.0
  U  U7  1  0.018  0.202  0.018  1.0
  As  As8  1  0.934  0.108  0.728  1.0
  As  As9  1  0.939  0.582  0.783  1.0
  As  As10  1  0.061  0.418  0.217  1.0
  As  As11  1  0.066  0.892  0.272  1.0
  O  O12  1  0.284  0.878  0.539  1.0
  O  O13  1  0.732  0.712  0.675  1.0
  O  O14  1  0.692  0.180  0.119  1.0
  O  O15  1  0.268  0.288  0.325  1.0
  O  O16  1  0.726  0.563  0.505  1.0
  O  O17  1  0.936  0.096  0.886  1.0
  O  O18  1  0.274  0.437  0.495  1.0
  O  O19  1  0.176  0.052  0.230  1.0
  O  O20  1  0.342  0.227  0.914  1.0
  O  O21  1  0.739  0.439  0.296  1.0
  O  O22  1  0.824  0.948  0.770  1.0
  O  O23  1  0.750  0.887  0.359  1.0
  O  O24  1  0.076  0.358  0.094  1.0
  O  O25  1  0.924  0.642  0.906  1.0
  O  O26  1  0.285  0.742  0.351  1.0
  O  O27  1  0.064  0.904  0.114  1.0
  O  O28  1  0.828  0.417  0.849  1.0
  O  O29  1  0.715  0.258  0.649  1.0
  O  O30  1  0.658  0.773  0.086  1.0
  O  O31  1  0.261  0.561  0.704  1.0
  O  O32  1  0.250  0.113  0.641  1.0
  O  O33  1  0.172  0.583  0.151  1.0
  O  O34  1  0.308  0.820  0.881  1.0
  O  O35  1  0.716  0.122  0.461  1.0
[/CIF]
.
The structure described by LiUAsO6 crystallizes in the triclinic P-1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(11), one O(12), one O(7), and one O(8) atom to form LiO4 tetrahedra that share corners with two equivalent U(1)O6 octahedra,  a cornercorner with one As(1)O4 tetrahedra, and corners with two equivalent As(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 60-77°. In the second Li site, Li(2) is bonded to one O(2), one O(3), one O(6), and one O(9) atom to form distorted LiO4 trigonal pyramids that share corners with two equivalent U(1)O6 octahedra,  a cornercorner with one As(2)O4 tetrahedra, and corners with two equivalent As(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 76-79°. There are two inequivalent U sites. In the first U site, U(1) is bonded to one O(1), one O(11), one O(2), one O(4), one O(8), and one O(9) atom to form UO6 octahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent As(1)O4 tetrahedra, corners with two equivalent As(2)O4 tetrahedra, and corners with two equivalent Li(2)O4 trigonal pyramids. In the second U site, U(2) is bonded in a 7-coordinate geometry to one O(10), one O(12), one O(3), one O(6), one O(7), and two equivalent O(5) atoms. There are two inequivalent As sites. In the first As site, As(1) is bonded to one O(11), one O(5), one O(6), and one O(9) atom to form AsO4 tetrahedra that share corners with two equivalent U(1)O6 octahedra,  a cornercorner with one Li(1)O4 tetrahedra, and corners with two equivalent Li(2)O4 trigonal pyramids. The corner-sharing octahedral tilt angles range from 41-55°. In the second As site, As(2) is bonded to one O(10), one O(12), one O(2), and one O(8) atom to form AsO4 tetrahedra that share corners with two equivalent U(1)O6 octahedra, corners with two equivalent Li(1)O4 tetrahedra, and  a cornercorner with one Li(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 44-48°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one U(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Li(2), one U(1), and one As(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Li(2) and one U(2) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one U(1) atom. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to two equivalent U(2) and one As(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Li(2), one U(2), and one As(1) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Li(1) and one U(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Li(1), one U(1), and one As(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Li(2), one U(1), and one As(1) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one U(2) and one As(2) atom. In the eleventh O site, O(11) is bonded in a trigonal planar geometry to one Li(1), one U(1), and one As(1) atom. In the twelfth O site, O(12) is bonded in a trigonal planar geometry to one Li(1), one U(2), and one As(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_LiUAsO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.236
_cell_length_b   10.291
_cell_length_c   11.212
_cell_angle_alpha   65.094
_cell_angle_beta   76.780
_cell_angle_gamma   76.479
_symmetry_Int_Tables_number   1
_cell_volume   526.981
_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
  Li  Li0  1  0.546  0.377  0.769  1.0
  Li  Li1  1  0.454  0.623  0.231  1.0
  Li  Li2  1  0.458  0.093  0.295  1.0
  Li  Li3  1  0.542  0.907  0.705  1.0
  U  U4  1  0.499  0.280  0.479  1.0
  U  U5  1  0.982  0.798  0.982  1.0
  U  U6  1  0.501  0.720  0.521  1.0
  U  U7  1  0.018  0.202  0.018  1.0
  As  As8  1  0.934  0.108  0.728  1.0
  As  As9  1  0.939  0.582  0.783  1.0
  As  As10  1  0.061  0.418  0.217  1.0
  As  As11  1  0.066  0.892  0.272  1.0
  O  O12  1  0.284  0.878  0.539  1.0
  O  O13  1  0.732  0.712  0.675  1.0
  O  O14  1  0.692  0.180  0.119  1.0
  O  O15  1  0.268  0.288  0.325  1.0
  O  O16  1  0.726  0.563  0.505  1.0
  O  O17  1  0.936  0.096  0.886  1.0
  O  O18  1  0.274  0.437  0.495  1.0
  O  O19  1  0.176  0.052  0.230  1.0
  O  O20  1  0.342  0.227  0.914  1.0
  O  O21  1  0.739  0.439  0.296  1.0
  O  O22  1  0.824  0.948  0.770  1.0
  O  O23  1  0.750  0.887  0.359  1.0
  O  O24  1  0.076  0.358  0.094  1.0
  O  O25  1  0.924  0.642  0.906  1.0
  O  O26  1  0.285  0.742  0.351  1.0
  O  O27  1  0.064  0.904  0.114  1.0
  O  O28  1  0.828  0.417  0.849  1.0
  O  O29  1  0.715  0.258  0.649  1.0
  O  O30  1  0.658  0.773  0.086  1.0
  O  O31  1  0.261  0.561  0.704  1.0
  O  O32  1  0.250  0.113  0.641  1.0
  O  O33  1  0.172  0.583  0.151  1.0
  O  O34  1  0.308  0.820  0.881  1.0
  O  O35  1  0.716  0.122  0.461  1.0
[/CIF]
.