The material described by Li3P7 crystallizes in the orthorhombic P2_12_12_1 space group. There are three inequivalent Li sites. In the first Li site, Li(1) is bonded in a 3-coordinate geometry to one P(5), two equivalent P(6), and two equivalent P(7) atoms. In the second Li site, Li(2) is bonded to one P(2), one P(3), one P(5), one P(6), and one P(7) atom to form distorted LiP5 tetrahedra that share corners with three equivalent P(1)LiP3 tetrahedra,  a cornercorner with one Li(3)P5 trigonal bipyramid, and  an edgeedge with one Li(3)P5 trigonal bipyramid. In the third Li site, Li(3) is bonded to one P(1), one P(2), one P(3), one P(4), and one P(5) atom to form distorted LiP5 trigonal bipyramids that share  a cornercorner with one Li(2)P5 tetrahedra,  a cornercorner with one P(1)LiP3 tetrahedra, corners with two equivalent P(5)Li3P2 trigonal bipyramids, and  an edgeedge with one Li(2)P5 tetrahedra. There are seven inequivalent P sites. In the first P site, P(6) is bonded in a 5-coordinate geometry to one Li(2), two equivalent Li(1), one P(1), and one P(3) atom. In the second P site, P(7) is bonded in a 5-coordinate geometry to one Li(2), two equivalent Li(1), one P(1), and one P(2) atom. In the third P site, P(1) is bonded to one Li(3), one P(5), one P(6), and one P(7) atom to form distorted PLiP3 tetrahedra that share corners with three equivalent Li(2)P5 tetrahedra,  a cornercorner with one Li(3)P5 trigonal bipyramid, and  a cornercorner with one P(5)Li3P2 trigonal bipyramid. In the fourth P site, P(2) is bonded in a 5-coordinate geometry to one Li(2), one Li(3), one P(3), one P(4), and one P(7) atom. In the fifth P site, P(3) is bonded in a 5-coordinate geometry to one Li(2), one Li(3), one P(2), one P(4), and one P(6) atom. In the sixth P site, P(4) is bonded in a 4-coordinate geometry to one Li(3), one P(2), one P(3), and one P(5) atom. In the seventh P site, P(5) is bonded to one Li(1), one Li(2), one Li(3), one P(1), and one P(4) atom to form distorted PLi3P2 trigonal bipyramids that share  a cornercorner with one P(1)LiP3 tetrahedra and corners with two equivalent Li(3)P5 trigonal bipyramids. is represented by the CIF file [CIF]
data_Li3P7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.619
_cell_length_b   9.798
_cell_length_c   10.487
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   782.944
_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  0.849  0.308  0.816  1.0
  Li  Li1  1  0.349  0.192  0.184  1.0
  Li  Li2  1  0.151  0.808  0.684  1.0
  Li  Li3  1  0.651  0.692  0.316  1.0
  Li  Li4  1  0.567  0.025  0.014  1.0
  Li  Li5  1  0.067  0.475  0.986  1.0
  Li  Li6  1  0.433  0.525  0.486  1.0
  Li  Li7  1  0.933  0.975  0.514  1.0
  Li  Li8  1  0.404  0.302  0.693  1.0
  Li  Li9  1  0.904  0.198  0.307  1.0
  Li  Li10  1  0.596  0.802  0.807  1.0
  Li  Li11  1  0.096  0.698  0.193  1.0
  P  P12  1  0.283  0.874  0.320  1.0
  P  P13  1  0.783  0.626  0.680  1.0
  P  P14  1  0.717  0.374  0.180  1.0
  P  P15  1  0.217  0.126  0.820  1.0
  P  P16  1  0.638  0.048  0.389  1.0
  P  P17  1  0.138  0.452  0.611  1.0
  P  P18  1  0.362  0.548  0.111  1.0
  P  P19  1  0.862  0.952  0.889  1.0
  P  P20  1  0.535  0.943  0.567  1.0
  P  P21  1  0.035  0.557  0.433  1.0
  P  P22  1  0.465  0.443  0.933  1.0
  P  P23  1  0.965  0.057  0.067  1.0
  P  P24  1  0.407  0.133  0.496  1.0
  P  P25  1  0.907  0.367  0.504  1.0
  P  P26  1  0.593  0.633  0.004  1.0
  P  P27  1  0.093  0.867  0.996  1.0
  P  P28  1  0.314  0.929  0.883  1.0
  P  P29  1  0.814  0.571  0.117  1.0
  P  P30  1  0.686  0.429  0.617  1.0
  P  P31  1  0.186  0.071  0.383  1.0
  P  P32  1  0.125  0.219  0.996  1.0
  P  P33  1  0.625  0.281  0.004  1.0
  P  P34  1  0.875  0.719  0.504  1.0
  P  P35  1  0.375  0.781  0.496  1.0
  P  P36  1  0.966  0.070  0.735  1.0
  P  P37  1  0.466  0.430  0.265  1.0
  P  P38  1  0.034  0.570  0.765  1.0
  P  P39  1  0.534  0.930  0.235  1.0
[/CIF]
.
The material described by Li3P7 crystallizes in the orthorhombic P2_12_12_1 space group. There are three inequivalent Li sites. In the first Li site, Li(1) is bonded in a 3-coordinate geometry to one P(5), two equivalent P(6), and two equivalent P(7) atoms. In the second Li site, Li(2) is bonded to one P(2), one P(3), one P(5), one P(6), and one P(7) atom to form distorted LiP5 tetrahedra that share corners with three equivalent P(1)LiP3 tetrahedra,  a cornercorner with one Li(3)P5 trigonal bipyramid, and  an edgeedge with one Li(3)P5 trigonal bipyramid. In the third Li site, Li(3) is bonded to one P(1), one P(2), one P(3), one P(4), and one P(5) atom to form distorted LiP5 trigonal bipyramids that share  a cornercorner with one Li(2)P5 tetrahedra,  a cornercorner with one P(1)LiP3 tetrahedra, corners with two equivalent P(5)Li3P2 trigonal bipyramids, and  an edgeedge with one Li(2)P5 tetrahedra. There are seven inequivalent P sites. In the first P site, P(6) is bonded in a 5-coordinate geometry to one Li(2), two equivalent Li(1), one P(1), and one P(3) atom. In the second P site, P(7) is bonded in a 5-coordinate geometry to one Li(2), two equivalent Li(1), one P(1), and one P(2) atom. In the third P site, P(1) is bonded to one Li(3), one P(5), one P(6), and one P(7) atom to form distorted PLiP3 tetrahedra that share corners with three equivalent Li(2)P5 tetrahedra,  a cornercorner with one Li(3)P5 trigonal bipyramid, and  a cornercorner with one P(5)Li3P2 trigonal bipyramid. In the fourth P site, P(2) is bonded in a 5-coordinate geometry to one Li(2), one Li(3), one P(3), one P(4), and one P(7) atom. In the fifth P site, P(3) is bonded in a 5-coordinate geometry to one Li(2), one Li(3), one P(2), one P(4), and one P(6) atom. In the sixth P site, P(4) is bonded in a 4-coordinate geometry to one Li(3), one P(2), one P(3), and one P(5) atom. In the seventh P site, P(5) is bonded to one Li(1), one Li(2), one Li(3), one P(1), and one P(4) atom to form distorted PLi3P2 trigonal bipyramids that share  a cornercorner with one P(1)LiP3 tetrahedra and corners with two equivalent Li(3)P5 trigonal bipyramids. is represented by the CIF file [CIF]
data_Li3P7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.619
_cell_length_b   9.798
_cell_length_c   10.487
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   782.944
_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  0.849  0.308  0.816  1.0
  Li  Li1  1  0.349  0.192  0.184  1.0
  Li  Li2  1  0.151  0.808  0.684  1.0
  Li  Li3  1  0.651  0.692  0.316  1.0
  Li  Li4  1  0.567  0.025  0.014  1.0
  Li  Li5  1  0.067  0.475  0.986  1.0
  Li  Li6  1  0.433  0.525  0.486  1.0
  Li  Li7  1  0.933  0.975  0.514  1.0
  Li  Li8  1  0.404  0.302  0.693  1.0
  Li  Li9  1  0.904  0.198  0.307  1.0
  Li  Li10  1  0.596  0.802  0.807  1.0
  Li  Li11  1  0.096  0.698  0.193  1.0
  P  P12  1  0.283  0.874  0.320  1.0
  P  P13  1  0.783  0.626  0.680  1.0
  P  P14  1  0.717  0.374  0.180  1.0
  P  P15  1  0.217  0.126  0.820  1.0
  P  P16  1  0.638  0.048  0.389  1.0
  P  P17  1  0.138  0.452  0.611  1.0
  P  P18  1  0.362  0.548  0.111  1.0
  P  P19  1  0.862  0.952  0.889  1.0
  P  P20  1  0.535  0.943  0.567  1.0
  P  P21  1  0.035  0.557  0.433  1.0
  P  P22  1  0.465  0.443  0.933  1.0
  P  P23  1  0.965  0.057  0.067  1.0
  P  P24  1  0.407  0.133  0.496  1.0
  P  P25  1  0.907  0.367  0.504  1.0
  P  P26  1  0.593  0.633  0.004  1.0
  P  P27  1  0.093  0.867  0.996  1.0
  P  P28  1  0.314  0.929  0.883  1.0
  P  P29  1  0.814  0.571  0.117  1.0
  P  P30  1  0.686  0.429  0.617  1.0
  P  P31  1  0.186  0.071  0.383  1.0
  P  P32  1  0.125  0.219  0.996  1.0
  P  P33  1  0.625  0.281  0.004  1.0
  P  P34  1  0.875  0.719  0.504  1.0
  P  P35  1  0.375  0.781  0.496  1.0
  P  P36  1  0.966  0.070  0.735  1.0
  P  P37  1  0.466  0.430  0.265  1.0
  P  P38  1  0.034  0.570  0.765  1.0
  P  P39  1  0.534  0.930  0.235  1.0
[/CIF]
.