Na3Li3Fe2P2(CO7)2 crystallizes in the triclinic P1 space group. There are six inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(2), one O(24), one O(25), and one O(9) atom. In the second Na site, Na(2) is bonded to one O(1), one O(11), one O(12), one O(4), one O(5), one O(7), and one O(9) atom to form distorted NaO7 pentagonal bipyramids that share  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  an edgeedge with one P(1)O4 tetrahedra, and edges with two equivalent Li(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 65°. In the third Na site, Na(3) is bonded in a 7-coordinate geometry to one O(13), one O(14), one O(2), one O(3), one O(6), one O(7), and one O(9) atom. In the fourth Na site, Na(4) is bonded in a 6-coordinate geometry to one O(13), one O(14), one O(2), one O(3), one O(6), and one O(8) atom. In the fifth Na site, Na(5) is bonded in a 7-coordinate geometry to one O(15), one O(16), one O(19), one O(21), one O(23), one O(26), and one O(27) atom. In the sixth Na site, Na(6) is bonded in a 7-coordinate geometry to one O(17), one O(18), one O(19), one O(21), one O(24), one O(25), and one O(28) atom. There are six inequivalent Li sites. In the first Li site, Li(1) is bonded in a 5-coordinate geometry to one O(1), one O(23), one O(26), one O(7), and one O(8) atom. In the second Li site, Li(2) is bonded to one O(1), one O(10), one O(11), one O(12), and one O(5) atom to form distorted LiO5 trigonal bipyramids that share  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and edges with two equivalent Na(2)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 60°. In the third Li site, Li(3) is bonded to one O(15), one O(16), one O(22), one O(23), and one O(27) atom to form distorted LiO5 trigonal bipyramids that share  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, and  an edgeedge with one Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles are 89°. In the fourth Li site, Li(4) is bonded in a 5-coordinate geometry to one O(17), one O(18), one O(20), one O(24), and one O(28) atom. In the fifth Li site, Li(5) is bonded in a 4-coordinate geometry to one O(19), one O(20), one O(27), and one O(4) atom. In the sixth Li site, Li(6) is bonded in a 4-coordinate geometry to one O(21), one O(22), one O(28), and one O(3) atom. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 6-coordinate geometry to one O(14), one O(16), one O(3), one O(5), one O(7), and one O(8) atom. In the second Fe site, Fe(2) is bonded in a 6-coordinate geometry to one O(10), one O(12), one O(18), one O(4), one O(6), and one O(9) atom. In the third Fe site, Fe(3) is bonded to one O(11), one O(17), one O(19), one O(20), one O(23), and one O(25) atom to form distorted FeO6 octahedra that share  a cornercorner with one Na(2)O7 pentagonal bipyramid,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra,  a cornercorner with one Li(2)O5 trigonal bipyramid, and  a cornercorner with one Li(3)O5 trigonal bipyramid. In the fourth Fe site, Fe(4) is bonded to one O(13), one O(15), one O(21), one O(22), one O(24), and one O(26) atom to form distorted FeO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra, and  an edgeedge with one Li(3)O5 trigonal bipyramid. There are four inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(27), one O(3), and one O(5) atom. In the second C site, C(2) is bonded in a trigonal planar geometry to one O(28), one O(4), and one O(6) atom. In the third C site, C(3) is bonded in a trigonal planar geometry to one O(1), one O(23), and one O(25) atom. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one O(2), one O(24), and one O(26) atom. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(11), one O(15), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra,  a cornercorner with one Li(2)O5 trigonal bipyramid,  a cornercorner with one Li(3)O5 trigonal bipyramid, and  an edgeedge with one Na(2)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 44-61°. In the second P site, P(2) is bonded to one O(10), one O(13), one O(17), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra,  a cornercorner with one Na(2)O7 pentagonal bipyramid, and  a cornercorner with one Li(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 48-57°. In the third P site, P(3) is bonded to one O(12), one O(16), one O(19), and one O(20) atom to form PO4 tetrahedra that share corners with two equivalent Fe(3)O6 octahedra,  a cornercorner with one Na(2)O7 pentagonal bipyramid,  a cornercorner with one Li(2)O5 trigonal bipyramid, and  a cornercorner with one Li(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 47-50°. In the fourth P site, P(4) is bonded to one O(14), one O(18), one O(21), and one O(22) atom to form PO4 tetrahedra that share corners with two equivalent Fe(4)O6 octahedra and  a cornercorner with one Li(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 44-53°. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Li(1), one Li(2), and one C(3) atom. In the second O site, O(2) is bonded to one Na(1), one Na(3), one Na(4), and one C(4) atom to form distorted edge-sharing ONa3C trigonal pyramids. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Na(3), one Na(4), one Li(6), one Fe(1), and one C(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Na(2), one Li(5), one Fe(2), and one C(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Na(2), one Li(2), one Fe(1), and one C(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Na(3), one Na(4), one Fe(2), and one C(2) atom. In the seventh O site, O(7) is bonded in a 5-coordinate geometry to one Na(2), one Na(3), one Li(1), one Fe(1), and one P(1) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Na(4), one Li(1), one Fe(1), and one P(1) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Na(3), one Fe(2), and one P(2) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Na(1), one Li(2), one Fe(2), and one P(2) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Na(2), one Li(2), one Fe(3), and one P(1) atom. In the twelfth O site, O(12) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), one Li(2), one Fe(2), and one P(3) atom. In the thirteenth O site, O(13) is bonded to one Na(3), one Na(4), one Fe(4), and one P(2) atom to form distorted ONa2FeP tetrahedra that share  a cornercorner with one O(17)NaLiFeP trigonal pyramid and  an edgeedge with one O(2)Na3C trigonal pyramid. In the fourteenth O site, O(14) is bonded in a rectangular see-saw-like geometry to one Na(3), one Na(4), one Fe(1), and one P(4) atom. In the fifteenth O site, O(15) is bonded in a distorted rectangular see-saw-like geometry to one Na(5), one Li(3), one Fe(4), and one P(1) atom. In the sixteenth O site, O(16) is bonded to one Na(5), one Li(3), one Fe(1), and one P(3) atom to form distorted ONaLiFeP tetrahedra that share corners with two equivalent O(23)NaLi2FeC trigonal bipyramids and  a cornercorner with one O(20)Li2FeP trigonal pyramid. In the seventeenth O site, O(17) is bonded to one Na(6), one Li(4), one Fe(3), and one P(2) atom to form distorted ONaLiFeP trigonal pyramids that share  a cornercorner with one O(13)Na2FeP tetrahedra,  a cornercorner with one O(23)NaLi2FeC trigonal bipyramid, and  an edgeedge with one O(20)Li2FeP trigonal pyramid. In the eighteenth O site, O(18) is bonded in a 4-coordinate geometry to one Na(6), one Li(4), one Fe(2), and one P(4) atom. In the nineteenth O site, O(19) is bonded in a 5-coordinate geometry to one Na(5), one Na(6), one Li(5), one Fe(3), and one P(3) atom. In the twentieth O site, O(20) is bonded to one Li(4), one Li(5), one Fe(3), and one P(3) atom to form distorted OLi2FeP trigonal pyramids that share  a cornercorner with one O(16)NaLiFeP tetrahedra,  a cornercorner with one O(23)NaLi2FeC trigonal bipyramid, and  an edgeedge with one O(17)NaLiFeP trigonal pyramid. In the twenty-first O site, O(21) is bonded in a 5-coordinate geometry to one Na(5), one Na(6), one Li(6), one Fe(4), and one P(4) atom. In the twenty-second O site, O(22) is bonded in a 4-coordinate geometry to one Li(3), one Li(6), one Fe(4), and one P(4) atom. In the twenty-third O site, O(23) is bonded to one Na(5), one Li(1), one Li(3), one Fe(3), and one C(3) atom to form distorted ONaLi2FeC trigonal bipyramids that share corners with two equivalent O(16)NaLiFeP tetrahedra,  a cornercorner with one O(20)Li2FeP trigonal pyramid, and  a cornercorner with one O(17)NaLiFeP trigonal pyramid. In the twenty-fourth O site, O(24) is bonded in a 5-coordinate geometry to one Na(1), one Na(6), one Li(4), one Fe(4), and one C(4) atom. In the twenty-fifth O site, O(25) is bonded in a 4-coordinate geometry to one Na(1), one Na(6), one Fe(3), and one C(3) atom. In the twenty-sixth O site, O(26) is bonded in a 4-coordinate geometry to one Na(5), one Li(1), one Fe(4), and one C(4) atom. In the twenty-seventh O site, O(27) is bonded in a distorted rectangular see-saw-like geometry to one Na(5), one Li(3), one Li(5), and one C(1) atom. In the twenty-eighth O site, O(28) is bonded in a distorted rectangular see-saw-like geometry to one Na(6), one Li(4), one Li(6), and one C(2) atom.
Na3Li3Fe2P2(CO7)2 crystallizes in the triclinic P1 space group. There are six inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(2), one O(24), one O(25), and one O(9) atom. The Na(1)-O(1) bond length is 2.87 Å. The Na(1)-O(10) bond length is 2.45 Å. The Na(1)-O(2) bond length is 2.31 Å. The Na(1)-O(24) bond length is 2.61 Å. The Na(1)-O(25) bond length is 2.23 Å. The Na(1)-O(9) bond length is 2.40 Å. In the second Na site, Na(2) is bonded to one O(1), one O(11), one O(12), one O(4), one O(5), one O(7), and one O(9) atom to form distorted NaO7 pentagonal bipyramids that share  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  an edgeedge with one P(1)O4 tetrahedra, and edges with two equivalent Li(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 65°. The Na(2)-O(1) bond length is 2.36 Å. The Na(2)-O(11) bond length is 2.46 Å. The Na(2)-O(12) bond length is 2.40 Å. The Na(2)-O(4) bond length is 2.70 Å. The Na(2)-O(5) bond length is 2.38 Å. The Na(2)-O(7) bond length is 2.66 Å. The Na(2)-O(9) bond length is 2.47 Å. In the third Na site, Na(3) is bonded in a 7-coordinate geometry to one O(13), one O(14), one O(2), one O(3), one O(6), one O(7), and one O(9) atom. The Na(3)-O(13) bond length is 2.49 Å. The Na(3)-O(14) bond length is 2.30 Å. The Na(3)-O(2) bond length is 2.25 Å. The Na(3)-O(3) bond length is 2.69 Å. The Na(3)-O(6) bond length is 2.47 Å. The Na(3)-O(7) bond length is 2.45 Å. The Na(3)-O(9) bond length is 2.90 Å. In the fourth Na site, Na(4) is bonded in a 6-coordinate geometry to one O(13), one O(14), one O(2), one O(3), one O(6), and one O(8) atom. The Na(4)-O(13) bond length is 2.44 Å. The Na(4)-O(14) bond length is 2.31 Å. The Na(4)-O(2) bond length is 2.25 Å. The Na(4)-O(3) bond length is 2.70 Å. The Na(4)-O(6) bond length is 2.42 Å. The Na(4)-O(8) bond length is 2.36 Å. In the fifth Na site, Na(5) is bonded in a 7-coordinate geometry to one O(15), one O(16), one O(19), one O(21), one O(23), one O(26), and one O(27) atom. The Na(5)-O(15) bond length is 2.40 Å. The Na(5)-O(16) bond length is 2.49 Å. The Na(5)-O(19) bond length is 2.71 Å. The Na(5)-O(21) bond length is 2.46 Å. The Na(5)-O(23) bond length is 2.42 Å. The Na(5)-O(26) bond length is 2.58 Å. The Na(5)-O(27) bond length is 2.36 Å. In the sixth Na site, Na(6) is bonded in a 7-coordinate geometry to one O(17), one O(18), one O(19), one O(21), one O(24), one O(25), and one O(28) atom. The Na(6)-O(17) bond length is 2.33 Å. The Na(6)-O(18) bond length is 2.52 Å. The Na(6)-O(19) bond length is 2.52 Å. The Na(6)-O(21) bond length is 2.76 Å. The Na(6)-O(24) bond length is 2.46 Å. The Na(6)-O(25) bond length is 2.64 Å. The Na(6)-O(28) bond length is 2.36 Å. There are six inequivalent Li sites. In the first Li site, Li(1) is bonded in a 5-coordinate geometry to one O(1), one O(23), one O(26), one O(7), and one O(8) atom. The Li(1)-O(1) bond length is 2.20 Å. The Li(1)-O(23) bond length is 2.48 Å. The Li(1)-O(26) bond length is 2.09 Å. The Li(1)-O(7) bond length is 2.23 Å. The Li(1)-O(8) bond length is 2.36 Å. In the second Li site, Li(2) is bonded to one O(1), one O(10), one O(11), one O(12), and one O(5) atom to form distorted LiO5 trigonal bipyramids that share  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and edges with two equivalent Na(2)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 60°. The Li(2)-O(1) bond length is 2.11 Å. The Li(2)-O(10) bond length is 2.27 Å. The Li(2)-O(11) bond length is 2.12 Å. The Li(2)-O(12) bond length is 2.18 Å. The Li(2)-O(5) bond length is 2.55 Å. In the third Li site, Li(3) is bonded to one O(15), one O(16), one O(22), one O(23), and one O(27) atom to form distorted LiO5 trigonal bipyramids that share  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, and  an edgeedge with one Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles are 89°. The Li(3)-O(15) bond length is 2.21 Å. The Li(3)-O(16) bond length is 2.15 Å. The Li(3)-O(22) bond length is 2.13 Å. The Li(3)-O(23) bond length is 2.42 Å. The Li(3)-O(27) bond length is 2.13 Å. In the fourth Li site, Li(4) is bonded in a 5-coordinate geometry to one O(17), one O(18), one O(20), one O(24), and one O(28) atom. The Li(4)-O(17) bond length is 2.11 Å. The Li(4)-O(18) bond length is 2.15 Å. The Li(4)-O(20) bond length is 2.12 Å. The Li(4)-O(24) bond length is 2.59 Å. The Li(4)-O(28) bond length is 2.13 Å. In the fifth Li site, Li(5) is bonded in a 4-coordinate geometry to one O(19), one O(20), one O(27), and one O(4) atom. The Li(5)-O(19) bond length is 2.24 Å. The Li(5)-O(20) bond length is 2.26 Å. The Li(5)-O(27) bond length is 2.08 Å. The Li(5)-O(4) bond length is 2.05 Å. In the sixth Li site, Li(6) is bonded in a 4-coordinate geometry to one O(21), one O(22), one O(28), and one O(3) atom. The Li(6)-O(21) bond length is 2.31 Å. The Li(6)-O(22) bond length is 2.17 Å. The Li(6)-O(28) bond length is 2.10 Å. The Li(6)-O(3) bond length is 2.04 Å. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 6-coordinate geometry to one O(14), one O(16), one O(3), one O(5), one O(7), and one O(8) atom. The Fe(1)-O(14) bond length is 2.11 Å. The Fe(1)-O(16) bond length is 2.07 Å. The Fe(1)-O(3) bond length is 2.56 Å. The Fe(1)-O(5) bond length is 2.10 Å. The Fe(1)-O(7) bond length is 2.19 Å. The Fe(1)-O(8) bond length is 2.14 Å. In the second Fe site, Fe(2) is bonded in a 6-coordinate geometry to one O(10), one O(12), one O(18), one O(4), one O(6), and one O(9) atom. The Fe(2)-O(10) bond length is 2.13 Å. The Fe(2)-O(12) bond length is 2.13 Å. The Fe(2)-O(18) bond length is 2.12 Å. The Fe(2)-O(4) bond length is 2.51 Å. The Fe(2)-O(6) bond length is 2.18 Å. The Fe(2)-O(9) bond length is 2.12 Å. In the third Fe site, Fe(3) is bonded to one O(11), one O(17), one O(19), one O(20), one O(23), and one O(25) atom to form distorted FeO6 octahedra that share  a cornercorner with one Na(2)O7 pentagonal bipyramid,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra,  a cornercorner with one Li(2)O5 trigonal bipyramid, and  a cornercorner with one Li(3)O5 trigonal bipyramid. The Fe(3)-O(11) bond length is 2.06 Å. The Fe(3)-O(17) bond length is 2.13 Å. The Fe(3)-O(19) bond length is 2.18 Å. The Fe(3)-O(20) bond length is 2.16 Å. The Fe(3)-O(23) bond length is 2.24 Å. The Fe(3)-O(25) bond length is 2.24 Å. In the fourth Fe site, Fe(4) is bonded to one O(13), one O(15), one O(21), one O(22), one O(24), and one O(26) atom to form distorted FeO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(4)O4 tetrahedra, and  an edgeedge with one Li(3)O5 trigonal bipyramid. The Fe(4)-O(13) bond length is 2.06 Å. The Fe(4)-O(15) bond length is 2.16 Å. The Fe(4)-O(21) bond length is 2.17 Å. The Fe(4)-O(22) bond length is 2.16 Å. The Fe(4)-O(24) bond length is 2.16 Å. The Fe(4)-O(26) bond length is 2.35 Å. There are four inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(27), one O(3), and one O(5) atom. The C(1)-O(27) bond length is 1.30 Å. The C(1)-O(3) bond length is 1.30 Å. The C(1)-O(5) bond length is 1.31 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one O(28), one O(4), and one O(6) atom. The C(2)-O(28) bond length is 1.30 Å. The C(2)-O(4) bond length is 1.30 Å. The C(2)-O(6) bond length is 1.31 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one O(1), one O(23), and one O(25) atom. The C(3)-O(1) bond length is 1.30 Å. The C(3)-O(23) bond length is 1.30 Å. The C(3)-O(25) bond length is 1.30 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one O(2), one O(24), and one O(26) atom. The C(4)-O(2) bond length is 1.29 Å. The C(4)-O(24) bond length is 1.31 Å. The C(4)-O(26) bond length is 1.30 Å. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(11), one O(15), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra,  a cornercorner with one Li(2)O5 trigonal bipyramid,  a cornercorner with one Li(3)O5 trigonal bipyramid, and  an edgeedge with one Na(2)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 44-61°. The P(1)-O(11) bond length is 1.57 Å. The P(1)-O(15) bond length is 1.55 Å. The P(1)-O(7) bond length is 1.56 Å. The P(1)-O(8) bond length is 1.55 Å. In the second P site, P(2) is bonded to one O(10), one O(13), one O(17), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra,  a cornercorner with one Na(2)O7 pentagonal bipyramid, and  a cornercorner with one Li(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 48-57°. The P(2)-O(10) bond length is 1.57 Å. The P(2)-O(13) bond length is 1.56 Å. The P(2)-O(17) bond length is 1.55 Å. The P(2)-O(9) bond length is 1.56 Å. In the third P site, P(3) is bonded to one O(12), one O(16), one O(19), and one O(20) atom to form PO4 tetrahedra that share corners with two equivalent Fe(3)O6 octahedra,  a cornercorner with one Na(2)O7 pentagonal bipyramid,  a cornercorner with one Li(2)O5 trigonal bipyramid, and  a cornercorner with one Li(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 47-50°. The P(3)-O(12) bond length is 1.56 Å. The P(3)-O(16) bond length is 1.56 Å. The P(3)-O(19) bond length is 1.55 Å. The P(3)-O(20) bond length is 1.56 Å. In the fourth P site, P(4) is bonded to one O(14), one O(18), one O(21), and one O(22) atom to form PO4 tetrahedra that share corners with two equivalent Fe(4)O6 octahedra and  a cornercorner with one Li(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 44-53°. The P(4)-O(14) bond length is 1.55 Å. The P(4)-O(18) bond length is 1.56 Å. The P(4)-O(21) bond length is 1.56 Å. The P(4)-O(22) bond length is 1.56 Å. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Li(1), one Li(2), and one C(3) atom. In the second O site, O(2) is bonded to one Na(1), one Na(3), one Na(4), and one C(4) atom to form distorted edge-sharing ONa3C trigonal pyramids. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Na(3), one Na(4), one Li(6), one Fe(1), and one C(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Na(2), one Li(5), one Fe(2), and one C(2) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Na(2), one Li(2), one Fe(1), and one C(1) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Na(3), one Na(4), one Fe(2), and one C(2) atom. In the seventh O site, O(7) is bonded in a 5-coordinate geometry to one Na(2), one Na(3), one Li(1), one Fe(1), and one P(1) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Na(4), one Li(1), one Fe(1), and one P(1) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Na(3), one Fe(2), and one P(2) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Na(1), one Li(2), one Fe(2), and one P(2) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Na(2), one Li(2), one Fe(3), and one P(1) atom. In the twelfth O site, O(12) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), one Li(2), one Fe(2), and one P(3) atom. In the thirteenth O site, O(13) is bonded to one Na(3), one Na(4), one Fe(4), and one P(2) atom to form distorted ONa2FeP tetrahedra that share  a cornercorner with one O(17)NaLiFeP trigonal pyramid and  an edgeedge with one O(2)Na3C trigonal pyramid. In the fourteenth O site, O(14) is bonded in a rectangular see-saw-like geometry to one Na(3), one Na(4), one Fe(1), and one P(4) atom. In the fifteenth O site, O(15) is bonded in a distorted rectangular see-saw-like geometry to one Na(5), one Li(3), one Fe(4), and one P(1) atom. In the sixteenth O site, O(16) is bonded to one Na(5), one Li(3), one Fe(1), and one P(3) atom to form distorted ONaLiFeP tetrahedra that share corners with two equivalent O(23)NaLi2FeC trigonal bipyramids and  a cornercorner with one O(20)Li2FeP trigonal pyramid. In the seventeenth O site, O(17) is bonded to one Na(6), one Li(4), one Fe(3), and one P(2) atom to form distorted ONaLiFeP trigonal pyramids that share  a cornercorner with one O(13)Na2FeP tetrahedra,  a cornercorner with one O(23)NaLi2FeC trigonal bipyramid, and  an edgeedge with one O(20)Li2FeP trigonal pyramid. In the eighteenth O site, O(18) is bonded in a 4-coordinate geometry to one Na(6), one Li(4), one Fe(2), and one P(4) atom. In the nineteenth O site, O(19) is bonded in a 5-coordinate geometry to one Na(5), one Na(6), one Li(5), one Fe(3), and one P(3) atom. In the twentieth O site, O(20) is bonded to one Li(4), one Li(5), one Fe(3), and one P(3) atom to form distorted OLi2FeP trigonal pyramids that share  a cornercorner with one O(16)NaLiFeP tetrahedra,  a cornercorner with one O(23)NaLi2FeC trigonal bipyramid, and  an edgeedge with one O(17)NaLiFeP trigonal pyramid. In the twenty-first O site, O(21) is bonded in a 5-coordinate geometry to one Na(5), one Na(6), one Li(6), one Fe(4), and one P(4) atom. In the twenty-second O site, O(22) is bonded in a 4-coordinate geometry to one Li(3), one Li(6), one Fe(4), and one P(4) atom. In the twenty-third O site, O(23) is bonded to one Na(5), one Li(1), one Li(3), one Fe(3), and one C(3) atom to form distorted ONaLi2FeC trigonal bipyramids that share corners with two equivalent O(16)NaLiFeP tetrahedra,  a cornercorner with one O(20)Li2FeP trigonal pyramid, and  a cornercorner with one O(17)NaLiFeP trigonal pyramid. In the twenty-fourth O site, O(24) is bonded in a 5-coordinate geometry to one Na(1), one Na(6), one Li(4), one Fe(4), and one C(4) atom. In the twenty-fifth O site, O(25) is bonded in a 4-coordinate geometry to one Na(1), one Na(6), one Fe(3), and one C(3) atom. In the twenty-sixth O site, O(26) is bonded in a 4-coordinate geometry to one Na(5), one Li(1), one Fe(4), and one C(4) atom. In the twenty-seventh O site, O(27) is bonded in a distorted rectangular see-saw-like geometry to one Na(5), one Li(3), one Li(5), and one C(1) atom. In the twenty-eighth O site, O(28) is bonded in a distorted rectangular see-saw-like geometry to one Na(6), one Li(4), one Li(6), and one C(2) atom.