The material described by Li4Cu(PO4)2 is Clathrate-derived structured and crystallizes in the monoclinic Pc space group. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(2), one O(3), one O(4), and one O(8) atom to form LiO4 tetrahedra that share corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Cu(1)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one Li(2)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(3), one O(5), one O(6), and one O(8) atom to form LiO4 tetrahedra that share corners with two equivalent Li(4)O4 tetrahedra, corners with two equivalent Cu(1)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra,  an edgeedge with one Li(1)O4 tetrahedra, and  an edgeedge with one Li(3)O4 tetrahedra. In the third Li site, Li(3) is bonded to one O(4), one O(6), one O(7), and one O(8) atom to form LiO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one Li(2)O4 tetrahedra. In the fourth Li site, Li(4) is bonded to one O(1), one O(5), one O(6), and one O(7) atom to form LiO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Cu(1)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. Cu(1) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form CuO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(4), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra, and corners with two equivalent Cu(1)O4 tetrahedra. In the second P site, P(2) is bonded to one O(2), one O(5), one O(7), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra, and corners with two equivalent Cu(1)O4 tetrahedra. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(4), one Cu(1), and one P(1) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one Li(1), one Cu(1), and one P(2) atom. In the third O site, O(3) is bonded to one Li(1), one Li(2), one Cu(1), and one P(1) atom to form OLi2CuP tetrahedra that share corners with two equivalent O(5)Li2CuP tetrahedra, corners with two equivalent O(6)Li3P tetrahedra, and  an edgeedge with one O(8)Li3P trigonal pyramid. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Li(1), one Li(3), and one P(1) atom. In the fifth O site, O(5) is bonded to one Li(2), one Li(4), one Cu(1), and one P(2) atom to form distorted OLi2CuP tetrahedra that share corners with two equivalent O(3)Li2CuP tetrahedra, corners with two equivalent O(6)Li3P tetrahedra, and corners with two equivalent O(8)Li3P trigonal pyramids. In the sixth O site, O(6) is bonded to one Li(2), one Li(3), one Li(4), and one P(1) atom to form OLi3P tetrahedra that share corners with two equivalent O(3)Li2CuP tetrahedra, corners with two equivalent O(5)Li2CuP tetrahedra, and  an edgeedge with one O(8)Li3P trigonal pyramid. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Li(3), one Li(4), and one P(2) atom. In the eighth O site, O(8) is bonded to one Li(1), one Li(2), one Li(3), and one P(2) atom to form distorted OLi3P trigonal pyramids that share corners with two equivalent O(5)Li2CuP tetrahedra,  an edgeedge with one O(3)Li2CuP tetrahedra, and  an edgeedge with one O(6)Li3P tetrahedra. is represented by the CIF file [CIF]
data_Li4Cu(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.002
_cell_length_b   6.345
_cell_length_c   10.569
_cell_angle_alpha   88.741
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   335.404
_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  0.939  0.997  0.845  1.0
  Li  Li1  1  0.458  0.261  0.424  1.0
  Li  Li2  1  0.542  0.261  0.924  1.0
  Li  Li3  1  0.061  0.997  0.345  1.0
  Li  Li4  1  0.941  0.510  0.837  1.0
  Li  Li5  1  0.059  0.510  0.337  1.0
  Li  Li6  1  0.434  0.505  0.661  1.0
  Li  Li7  1  0.566  0.505  0.161  1.0
  Cu  Cu8  1  0.577  0.977  0.160  1.0
  Cu  Cu9  1  0.423  0.977  0.660  1.0
  P  P10  1  0.573  0.751  0.406  1.0
  P  P11  1  0.951  0.250  0.593  1.0
  P  P12  1  0.427  0.751  0.906  1.0
  P  P13  1  0.049  0.250  0.093  1.0
  O  O14  1  0.523  0.751  0.046  1.0
  O  O15  1  0.960  0.041  0.164  1.0
  O  O16  1  0.537  0.964  0.842  1.0
  O  O17  1  0.463  0.964  0.342  1.0
  O  O18  1  0.123  0.751  0.895  1.0
  O  O19  1  0.364  0.248  0.092  1.0
  O  O20  1  0.877  0.751  0.395  1.0
  O  O21  1  0.477  0.751  0.546  1.0
  O  O22  1  0.547  0.555  0.840  1.0
  O  O23  1  0.453  0.555  0.340  1.0
  O  O24  1  0.054  0.439  0.666  1.0
  O  O25  1  0.946  0.439  0.166  1.0
  O  O26  1  0.944  0.250  0.954  1.0
  O  O27  1  0.056  0.250  0.454  1.0
  O  O28  1  0.636  0.248  0.592  1.0
  O  O29  1  0.040  0.041  0.664  1.0
[/CIF]
.
The material described by Li4Cu(PO4)2 is Clathrate-derived structured and crystallizes in the monoclinic Pc space group. There are four inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(2), one O(3), one O(4), and one O(8) atom to form LiO4 tetrahedra that share corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Cu(1)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one Li(2)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(3), one O(5), one O(6), and one O(8) atom to form LiO4 tetrahedra that share corners with two equivalent Li(4)O4 tetrahedra, corners with two equivalent Cu(1)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra,  an edgeedge with one Li(1)O4 tetrahedra, and  an edgeedge with one Li(3)O4 tetrahedra. In the third Li site, Li(3) is bonded to one O(4), one O(6), one O(7), and one O(8) atom to form LiO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  an edgeedge with one Li(2)O4 tetrahedra. In the fourth Li site, Li(4) is bonded to one O(1), one O(5), one O(6), and one O(7) atom to form LiO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Cu(1)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. Cu(1) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form CuO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra, corners with two equivalent P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(4), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra, and corners with two equivalent Cu(1)O4 tetrahedra. In the second P site, P(2) is bonded to one O(2), one O(5), one O(7), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra, and corners with two equivalent Cu(1)O4 tetrahedra. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(4), one Cu(1), and one P(1) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one Li(1), one Cu(1), and one P(2) atom. In the third O site, O(3) is bonded to one Li(1), one Li(2), one Cu(1), and one P(1) atom to form OLi2CuP tetrahedra that share corners with two equivalent O(5)Li2CuP tetrahedra, corners with two equivalent O(6)Li3P tetrahedra, and  an edgeedge with one O(8)Li3P trigonal pyramid. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Li(1), one Li(3), and one P(1) atom. In the fifth O site, O(5) is bonded to one Li(2), one Li(4), one Cu(1), and one P(2) atom to form distorted OLi2CuP tetrahedra that share corners with two equivalent O(3)Li2CuP tetrahedra, corners with two equivalent O(6)Li3P tetrahedra, and corners with two equivalent O(8)Li3P trigonal pyramids. In the sixth O site, O(6) is bonded to one Li(2), one Li(3), one Li(4), and one P(1) atom to form OLi3P tetrahedra that share corners with two equivalent O(3)Li2CuP tetrahedra, corners with two equivalent O(5)Li2CuP tetrahedra, and  an edgeedge with one O(8)Li3P trigonal pyramid. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Li(3), one Li(4), and one P(2) atom. In the eighth O site, O(8) is bonded to one Li(1), one Li(2), one Li(3), and one P(2) atom to form distorted OLi3P trigonal pyramids that share corners with two equivalent O(5)Li2CuP tetrahedra,  an edgeedge with one O(3)Li2CuP tetrahedra, and  an edgeedge with one O(6)Li3P tetrahedra. is represented by the CIF file [CIF]
data_Li4Cu(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.002
_cell_length_b   6.345
_cell_length_c   10.569
_cell_angle_alpha   88.741
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   335.404
_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  0.939  0.997  0.845  1.0
  Li  Li1  1  0.458  0.261  0.424  1.0
  Li  Li2  1  0.542  0.261  0.924  1.0
  Li  Li3  1  0.061  0.997  0.345  1.0
  Li  Li4  1  0.941  0.510  0.837  1.0
  Li  Li5  1  0.059  0.510  0.337  1.0
  Li  Li6  1  0.434  0.505  0.661  1.0
  Li  Li7  1  0.566  0.505  0.161  1.0
  Cu  Cu8  1  0.577  0.977  0.160  1.0
  Cu  Cu9  1  0.423  0.977  0.660  1.0
  P  P10  1  0.573  0.751  0.406  1.0
  P  P11  1  0.951  0.250  0.593  1.0
  P  P12  1  0.427  0.751  0.906  1.0
  P  P13  1  0.049  0.250  0.093  1.0
  O  O14  1  0.523  0.751  0.046  1.0
  O  O15  1  0.960  0.041  0.164  1.0
  O  O16  1  0.537  0.964  0.842  1.0
  O  O17  1  0.463  0.964  0.342  1.0
  O  O18  1  0.123  0.751  0.895  1.0
  O  O19  1  0.364  0.248  0.092  1.0
  O  O20  1  0.877  0.751  0.395  1.0
  O  O21  1  0.477  0.751  0.546  1.0
  O  O22  1  0.547  0.555  0.840  1.0
  O  O23  1  0.453  0.555  0.340  1.0
  O  O24  1  0.054  0.439  0.666  1.0
  O  O25  1  0.946  0.439  0.166  1.0
  O  O26  1  0.944  0.250  0.954  1.0
  O  O27  1  0.056  0.250  0.454  1.0
  O  O28  1  0.636  0.248  0.592  1.0
  O  O29  1  0.040  0.041  0.664  1.0
[/CIF]
.