The structure described by Li2Nb2(PO4)3 crystallizes in the monoclinic C2/c space group. Li(1) is bonded in a rectangular see-saw-like geometry to one O(3), one O(4), one O(5), and one O(6) atom. Nb(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form NbO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra and corners with four equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form PO4 tetrahedra that share corners with four equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 22-40°. In the second P site, P(2) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form PO4 tetrahedra that share corners with four equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 17-43°. There are six inequivalent O sites. In the first O site, O(5) is bonded in a 3-coordinate geometry to one Li(1), one Nb(1), and one P(2) atom. In the second O site, O(6) is bonded in a distorted trigonal planar geometry to one Li(1), one Nb(1), and one P(2) atom. In the third O site, O(1) is bonded in a bent 150 degrees geometry to one Nb(1) and one P(1) atom. In the fourth O site, O(2) is bonded in a linear geometry to one Nb(1) and one P(2) atom. In the fifth O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(1), one Nb(1), and one P(1) atom. In the sixth O site, O(4) is bonded in a 3-coordinate geometry to one Li(1), one Nb(1), and one P(2) atom. is represented by the CIF file [CIF]
data_Li2Nb2(PO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.901
_cell_length_b   8.901
_cell_length_c   8.897
_cell_angle_alpha   60.386
_cell_angle_beta   60.386
_cell_angle_gamma   62.123
_symmetry_Int_Tables_number   1
_cell_volume   508.998
_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  0.323  0.185  0.548  1.0
  Li  Li1  1  0.815  0.677  0.952  1.0
  Li  Li2  1  0.185  0.323  0.048  1.0
  Li  Li3  1  0.677  0.815  0.452  1.0
  Nb  Nb4  1  0.860  0.361  0.858  1.0
  Nb  Nb5  1  0.639  0.140  0.642  1.0
  Nb  Nb6  1  0.361  0.860  0.358  1.0
  Nb  Nb7  1  0.140  0.639  0.142  1.0
  P  P8  1  0.534  0.466  0.250  1.0
  P  P9  1  0.466  0.534  0.750  1.0
  P  P10  1  0.243  0.047  0.963  1.0
  P  P11  1  0.953  0.757  0.537  1.0
  P  P12  1  0.047  0.243  0.463  1.0
  P  P13  1  0.757  0.953  0.037  1.0
  O  O14  1  0.499  0.374  0.702  1.0
  O  O15  1  0.886  0.188  0.511  1.0
  O  O16  1  0.716  0.456  0.087  1.0
  O  O17  1  0.698  0.968  0.891  1.0
  O  O18  1  0.374  0.499  0.202  1.0
  O  O19  1  0.544  0.284  0.413  1.0
  O  O20  1  0.088  0.230  0.945  1.0
  O  O21  1  0.396  0.070  0.771  1.0
  O  O22  1  0.770  0.912  0.555  1.0
  O  O23  1  0.032  0.302  0.609  1.0
  O  O24  1  0.070  0.396  0.271  1.0
  O  O25  1  0.812  0.114  0.989  1.0
  O  O26  1  0.188  0.886  0.011  1.0
  O  O27  1  0.930  0.604  0.729  1.0
  O  O28  1  0.968  0.698  0.391  1.0
  O  O29  1  0.230  0.088  0.445  1.0
  O  O30  1  0.604  0.930  0.229  1.0
  O  O31  1  0.912  0.770  0.055  1.0
  O  O32  1  0.456  0.716  0.587  1.0
  O  O33  1  0.626  0.501  0.798  1.0
  O  O34  1  0.302  0.032  0.109  1.0
  O  O35  1  0.284  0.544  0.913  1.0
  O  O36  1  0.114  0.812  0.489  1.0
  O  O37  1  0.501  0.626  0.298  1.0
[/CIF]
.
The structure described by Li2Nb2(PO4)3 crystallizes in the monoclinic C2/c space group. Li(1) is bonded in a rectangular see-saw-like geometry to one O(3), one O(4), one O(5), and one O(6) atom. Nb(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form NbO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra and corners with four equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form PO4 tetrahedra that share corners with four equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 22-40°. In the second P site, P(2) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form PO4 tetrahedra that share corners with four equivalent Nb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 17-43°. There are six inequivalent O sites. In the first O site, O(5) is bonded in a 3-coordinate geometry to one Li(1), one Nb(1), and one P(2) atom. In the second O site, O(6) is bonded in a distorted trigonal planar geometry to one Li(1), one Nb(1), and one P(2) atom. In the third O site, O(1) is bonded in a bent 150 degrees geometry to one Nb(1) and one P(1) atom. In the fourth O site, O(2) is bonded in a linear geometry to one Nb(1) and one P(2) atom. In the fifth O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(1), one Nb(1), and one P(1) atom. In the sixth O site, O(4) is bonded in a 3-coordinate geometry to one Li(1), one Nb(1), and one P(2) atom. is represented by the CIF file [CIF]
data_Li2Nb2(PO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.901
_cell_length_b   8.901
_cell_length_c   8.897
_cell_angle_alpha   60.386
_cell_angle_beta   60.386
_cell_angle_gamma   62.123
_symmetry_Int_Tables_number   1
_cell_volume   508.998
_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  0.323  0.185  0.548  1.0
  Li  Li1  1  0.815  0.677  0.952  1.0
  Li  Li2  1  0.185  0.323  0.048  1.0
  Li  Li3  1  0.677  0.815  0.452  1.0
  Nb  Nb4  1  0.860  0.361  0.858  1.0
  Nb  Nb5  1  0.639  0.140  0.642  1.0
  Nb  Nb6  1  0.361  0.860  0.358  1.0
  Nb  Nb7  1  0.140  0.639  0.142  1.0
  P  P8  1  0.534  0.466  0.250  1.0
  P  P9  1  0.466  0.534  0.750  1.0
  P  P10  1  0.243  0.047  0.963  1.0
  P  P11  1  0.953  0.757  0.537  1.0
  P  P12  1  0.047  0.243  0.463  1.0
  P  P13  1  0.757  0.953  0.037  1.0
  O  O14  1  0.499  0.374  0.702  1.0
  O  O15  1  0.886  0.188  0.511  1.0
  O  O16  1  0.716  0.456  0.087  1.0
  O  O17  1  0.698  0.968  0.891  1.0
  O  O18  1  0.374  0.499  0.202  1.0
  O  O19  1  0.544  0.284  0.413  1.0
  O  O20  1  0.088  0.230  0.945  1.0
  O  O21  1  0.396  0.070  0.771  1.0
  O  O22  1  0.770  0.912  0.555  1.0
  O  O23  1  0.032  0.302  0.609  1.0
  O  O24  1  0.070  0.396  0.271  1.0
  O  O25  1  0.812  0.114  0.989  1.0
  O  O26  1  0.188  0.886  0.011  1.0
  O  O27  1  0.930  0.604  0.729  1.0
  O  O28  1  0.968  0.698  0.391  1.0
  O  O29  1  0.230  0.088  0.445  1.0
  O  O30  1  0.604  0.930  0.229  1.0
  O  O31  1  0.912  0.770  0.055  1.0
  O  O32  1  0.456  0.716  0.587  1.0
  O  O33  1  0.626  0.501  0.798  1.0
  O  O34  1  0.302  0.032  0.109  1.0
  O  O35  1  0.284  0.544  0.913  1.0
  O  O36  1  0.114  0.812  0.489  1.0
  O  O37  1  0.501  0.626  0.298  1.0
[/CIF]
.