Na5LiFe2P2(CO7)2 crystallizes in the triclinic P1 space group. There are ten inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(23), one O(26), one O(7), and one O(8) atom. In the second Na site, Na(2) 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 third Na site, Na(3) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(12), one O(4), one O(5), one O(7), and one O(9) atom. In the fourth Na site, Na(4) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(11), one O(12), one O(4), one O(5), and one O(8) atom. In the fifth Na site, Na(5) 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 sixth Na site, Na(6) is bonded in a 7-coordinate geometry to one O(10), one O(13), one O(14), one O(2), one O(3), one O(6), and one O(8) atom. In the seventh Na site, Na(7) is bonded to one O(15), one O(16), one O(19), one O(21), one O(23), one O(26), and one O(27) atom to form distorted NaO7 pentagonal bipyramids that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra,  an edgeedge with one Fe(3)O6 octahedra,  an edgeedge with one P(3)O4 tetrahedra, and  a faceface with one Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles are 68°. In the eighth Na site, Na(8) 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. In the ninth Na site, Na(9) is bonded in a 6-coordinate geometry to one O(17), one O(18), one O(20), one O(24), one O(25), and one O(28) atom. In the tenth Na site, Na(10) is bonded in a 6-coordinate geometry to one O(21), one O(22), one O(27), one O(28), one O(3), and one O(6) atom. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 5-coordinate geometry to one O(15), one O(16), one O(22), one O(23), and one O(27) atom. In the second Li site, Li(2) is bonded in a 5-coordinate geometry to one O(19), one O(20), one O(27), one O(4), and one O(5) atom. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(14), one O(16), one O(3), one O(5), one O(7), and one O(8) atom to form distorted FeO6 octahedra that share  a cornercorner with one Na(7)O7 pentagonal bipyramid,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, and corners with two equivalent P(1)O4 tetrahedra. In the second Fe site, Fe(2) is bonded to one O(10), one O(12), one O(18), one O(4), one O(6), and one O(9) atom to form distorted FeO6 octahedra that share  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. 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 P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and  an edgeedge with one Na(7)O7 pentagonal 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  a faceface with one Na(7)O7 pentagonal 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, corners with two equivalent Fe(1)O6 octahedra, and  a cornercorner with one Na(7)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 43-59°. 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, and corners with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-55°. 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  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra, and  an edgeedge with one Na(7)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 41-57°. 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  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra, corners with two equivalent Fe(4)O6 octahedra, and  a cornercorner with one Na(7)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 44-55°. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), one Na(3), one Na(4), and one C(3) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), one Na(5), one Na(6), and one C(4) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Na(10), one Na(5), one Na(6), one Fe(1), and one C(1) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Na(3), one Na(4), one Li(2), one Fe(2), and one C(2) atom. In the fifth O site, O(5) is bonded to one Na(3), one Na(4), one Li(2), one Fe(1), and one C(1) atom to form distorted ONa2LiFeC trigonal bipyramids that share  a cornercorner with one O(16)NaLiFeP tetrahedra, corners with two equivalent O(11)Na2FeP tetrahedra, and  a cornercorner with one O(20)NaLiFeP trigonal pyramid. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Na(10), one Na(5), one Na(6), 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(1), one Na(3), one Na(5), one Fe(1), and one P(1) atom. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Na(1), one Na(4), one Na(6), one Fe(1), and one P(1) atom. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one Na(2), one Na(3), one Na(5), one Fe(2), and one P(2) atom. In the tenth O site, O(10) is bonded in a 5-coordinate geometry to one Na(2), one Na(4), one Na(6), one Fe(2), and one P(2) atom. In the eleventh O site, O(11) is bonded to one Na(3), one Na(4), one Fe(3), and one P(1) atom to form distorted ONa2FeP tetrahedra that share  a cornercorner with one O(23)Na2LiFeC trigonal bipyramid, corners with two equivalent O(5)Na2LiFeC trigonal bipyramids, and  a cornercorner with one O(20)NaLiFeP trigonal pyramid. In the twelfth O site, O(12) is bonded in a distorted rectangular see-saw-like geometry to one Na(3), one Na(4), one Fe(2), and one P(3) atom. In the thirteenth O site, O(13) is bonded to one Na(5), one Na(6), one Fe(4), and one P(2) atom to form distorted corner-sharing ONa2FeP tetrahedra. In the fourteenth O site, O(14) is bonded in a rectangular see-saw-like geometry to one Na(5), one Na(6), 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(7), one Li(1), one Fe(4), and one P(1) atom. In the sixteenth O site, O(16) is bonded to one Na(7), one Li(1), one Fe(1), and one P(3) atom to form distorted ONaLiFeP tetrahedra that share  a cornercorner with one O(5)Na2LiFeC trigonal bipyramid, corners with two equivalent O(23)Na2LiFeC trigonal bipyramids, and  a cornercorner with one O(20)NaLiFeP trigonal pyramid. In the seventeenth O site, O(17) is bonded in a rectangular see-saw-like geometry to one Na(8), one Na(9), one Fe(3), and one P(2) atom. In the eighteenth O site, O(18) is bonded to one Na(8), one Na(9), one Fe(2), and one P(4) atom to form distorted ONa2FeP tetrahedra that share corners with two equivalent O(24)Na3FeC trigonal bipyramids and  a cornercorner with one O(20)NaLiFeP trigonal pyramid. In the nineteenth O site, O(19) is bonded in a 5-coordinate geometry to one Na(7), one Na(8), one Li(2), one Fe(3), and one P(3) atom. In the twentieth O site, O(20) is bonded to one Na(9), one Li(2), one Fe(3), and one P(3) atom to form distorted ONaLiFeP trigonal pyramids that share  a cornercorner with one O(11)Na2FeP tetrahedra,  a cornercorner with one O(18)Na2FeP tetrahedra,  a cornercorner with one O(16)NaLiFeP tetrahedra,  a cornercorner with one O(23)Na2LiFeC trigonal bipyramid,  a cornercorner with one O(5)Na2LiFeC trigonal bipyramid, and  a cornercorner with one O(24)Na3FeC trigonal bipyramid. In the twenty-first O site, O(21) is bonded in a 4-coordinate geometry to one Na(10), one Na(7), one Na(8), 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 Na(10), one Li(1), one Fe(4), and one P(4) atom. In the twenty-third O site, O(23) is bonded to one Na(1), one Na(7), one Li(1), one Fe(3), and one C(3) atom to form distorted ONa2LiFeC trigonal bipyramids that share  a cornercorner with one O(11)Na2FeP tetrahedra, corners with two equivalent O(16)NaLiFeP tetrahedra, and  a cornercorner with one O(20)NaLiFeP trigonal pyramid. In the twenty-fourth O site, O(24) is bonded to one Na(2), one Na(8), one Na(9), one Fe(4), and one C(4) atom to form distorted ONa3FeC trigonal bipyramids that share  a cornercorner with one O(13)Na2FeP tetrahedra, corners with two equivalent O(18)Na2FeP tetrahedra, and  a cornercorner with one O(20)NaLiFeP trigonal pyramid. In the twenty-fifth O site, O(25) is bonded in a 5-coordinate geometry to one Na(2), one Na(8), one Na(9), one Fe(3), and one C(3) atom. In the twenty-sixth O site, O(26) is bonded in a 1-coordinate geometry to one Na(1), one Na(7), one Fe(4), and one C(4) atom. In the twenty-seventh O site, O(27) is bonded in a 4-coordinate geometry to one Na(10), one Na(7), one Li(1), one Li(2), 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(10), one Na(8), one Na(9), and one C(2) atom.
Na5LiFe2P2(CO7)2 crystallizes in the triclinic P1 space group. There are ten inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(23), one O(26), one O(7), and one O(8) atom. The Na(1)-O(1) bond length is 2.44 Å. The Na(1)-O(2) bond length is 2.73 Å. The Na(1)-O(23) bond length is 2.52 Å. The Na(1)-O(26) bond length is 2.33 Å. The Na(1)-O(7) bond length is 2.44 Å. The Na(1)-O(8) bond length is 2.55 Å. In the second Na site, Na(2) 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(2)-O(1) bond length is 2.73 Å. The Na(2)-O(10) bond length is 2.47 Å. The Na(2)-O(2) bond length is 2.48 Å. The Na(2)-O(24) bond length is 2.53 Å. The Na(2)-O(25) bond length is 2.33 Å. The Na(2)-O(9) bond length is 2.46 Å. In the third Na site, Na(3) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(12), one O(4), one O(5), one O(7), and one O(9) atom. The Na(3)-O(1) bond length is 2.31 Å. The Na(3)-O(11) bond length is 2.45 Å. The Na(3)-O(12) bond length is 2.36 Å. The Na(3)-O(4) bond length is 2.61 Å. The Na(3)-O(5) bond length is 2.43 Å. The Na(3)-O(7) bond length is 2.81 Å. The Na(3)-O(9) bond length is 2.49 Å. In the fourth Na site, Na(4) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(11), one O(12), one O(4), one O(5), and one O(8) atom. The Na(4)-O(1) bond length is 2.32 Å. The Na(4)-O(10) bond length is 2.49 Å. The Na(4)-O(11) bond length is 2.43 Å. The Na(4)-O(12) bond length is 2.37 Å. The Na(4)-O(4) bond length is 2.63 Å. The Na(4)-O(5) bond length is 2.39 Å. The Na(4)-O(8) bond length is 2.90 Å. In the fifth Na site, Na(5) 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(5)-O(13) bond length is 2.43 Å. The Na(5)-O(14) bond length is 2.30 Å. The Na(5)-O(2) bond length is 2.31 Å. The Na(5)-O(3) bond length is 2.67 Å. The Na(5)-O(6) bond length is 2.48 Å. The Na(5)-O(7) bond length is 2.56 Å. The Na(5)-O(9) bond length is 2.86 Å. In the sixth Na site, Na(6) is bonded in a 7-coordinate geometry to one O(10), one O(13), one O(14), one O(2), one O(3), one O(6), and one O(8) atom. The Na(6)-O(10) bond length is 2.84 Å. The Na(6)-O(13) bond length is 2.42 Å. The Na(6)-O(14) bond length is 2.31 Å. The Na(6)-O(2) bond length is 2.30 Å. The Na(6)-O(3) bond length is 2.69 Å. The Na(6)-O(6) bond length is 2.47 Å. The Na(6)-O(8) bond length is 2.52 Å. In the seventh Na site, Na(7) is bonded to one O(15), one O(16), one O(19), one O(21), one O(23), one O(26), and one O(27) atom to form distorted NaO7 pentagonal bipyramids that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra,  an edgeedge with one Fe(3)O6 octahedra,  an edgeedge with one P(3)O4 tetrahedra, and  a faceface with one Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles are 68°. The Na(7)-O(15) bond length is 2.38 Å. The Na(7)-O(16) bond length is 2.46 Å. The Na(7)-O(19) bond length is 2.70 Å. The Na(7)-O(21) bond length is 2.51 Å. The Na(7)-O(23) bond length is 2.44 Å. The Na(7)-O(26) bond length is 2.63 Å. The Na(7)-O(27) bond length is 2.38 Å. In the eighth Na site, Na(8) 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(8)-O(17) bond length is 2.31 Å. The Na(8)-O(18) bond length is 2.45 Å. The Na(8)-O(19) bond length is 2.53 Å. The Na(8)-O(21) bond length is 2.92 Å. The Na(8)-O(24) bond length is 2.49 Å. The Na(8)-O(25) bond length is 2.60 Å. The Na(8)-O(28) bond length is 2.30 Å. In the ninth Na site, Na(9) is bonded in a 6-coordinate geometry to one O(17), one O(18), one O(20), one O(24), one O(25), and one O(28) atom. The Na(9)-O(17) bond length is 2.30 Å. The Na(9)-O(18) bond length is 2.42 Å. The Na(9)-O(20) bond length is 2.42 Å. The Na(9)-O(24) bond length is 2.45 Å. The Na(9)-O(25) bond length is 2.61 Å. The Na(9)-O(28) bond length is 2.30 Å. In the tenth Na site, Na(10) is bonded in a 6-coordinate geometry to one O(21), one O(22), one O(27), one O(28), one O(3), and one O(6) atom. The Na(10)-O(21) bond length is 2.48 Å. The Na(10)-O(22) bond length is 2.42 Å. The Na(10)-O(27) bond length is 2.83 Å. The Na(10)-O(28) bond length is 2.41 Å. The Na(10)-O(3) bond length is 2.32 Å. The Na(10)-O(6) bond length is 2.62 Å. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 5-coordinate geometry to one O(15), one O(16), one O(22), one O(23), and one O(27) atom. The Li(1)-O(15) bond length is 2.14 Å. The Li(1)-O(16) bond length is 2.15 Å. The Li(1)-O(22) bond length is 2.37 Å. The Li(1)-O(23) bond length is 2.52 Å. The Li(1)-O(27) bond length is 2.20 Å. In the second Li site, Li(2) is bonded in a 5-coordinate geometry to one O(19), one O(20), one O(27), one O(4), and one O(5) atom. The Li(2)-O(19) bond length is 2.32 Å. The Li(2)-O(20) bond length is 2.24 Å. The Li(2)-O(27) bond length is 2.32 Å. The Li(2)-O(4) bond length is 2.26 Å. The Li(2)-O(5) bond length is 2.52 Å. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(14), one O(16), one O(3), one O(5), one O(7), and one O(8) atom to form distorted FeO6 octahedra that share  a cornercorner with one Na(7)O7 pentagonal bipyramid,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, and corners with two equivalent P(1)O4 tetrahedra. The Fe(1)-O(14) bond length is 2.12 Å. The Fe(1)-O(16) bond length is 2.13 Å. The Fe(1)-O(3) bond length is 2.30 Å. The Fe(1)-O(5) bond length is 2.36 Å. The Fe(1)-O(7) bond length is 2.12 Å. The Fe(1)-O(8) bond length is 2.13 Å. In the second Fe site, Fe(2) is bonded to one O(10), one O(12), one O(18), one O(4), one O(6), and one O(9) atom to form distorted FeO6 octahedra that share  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. The Fe(2)-O(10) bond length is 2.12 Å. The Fe(2)-O(12) bond length is 2.17 Å. The Fe(2)-O(18) bond length is 2.12 Å. The Fe(2)-O(4) bond length is 2.39 Å. The Fe(2)-O(6) bond length is 2.25 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 P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, corners with two equivalent P(3)O4 tetrahedra, and  an edgeedge with one Na(7)O7 pentagonal bipyramid. The Fe(3)-O(11) bond length is 2.05 Å. The Fe(3)-O(17) bond length is 2.16 Å. The Fe(3)-O(19) bond length is 2.17 Å. The Fe(3)-O(20) bond length is 2.16 Å. The Fe(3)-O(23) bond length is 2.27 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  a faceface with one Na(7)O7 pentagonal bipyramid. The Fe(4)-O(13) bond length is 2.12 Å. The Fe(4)-O(15) bond length is 2.16 Å. The Fe(4)-O(21) bond length is 2.12 Å. The Fe(4)-O(22) bond length is 2.12 Å. The Fe(4)-O(24) bond length is 2.33 Å. The Fe(4)-O(26) bond length is 2.21 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 1.31 Å. The C(1)-O(5) bond length is 1.30 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 1.29 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 1.29 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 1.30 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, corners with two equivalent Fe(1)O6 octahedra, and  a cornercorner with one Na(7)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 43-59°. The P(1)-O(11) bond length is 1.56 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 1.56 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, and corners with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 43-55°. The P(2)-O(10) bond length is 1.56 Å. The P(2)-O(13) bond length is 1.56 Å. The P(2)-O(17) bond length is 1.54 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  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra, and  an edgeedge with one Na(7)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 41-57°. The P(3)-O(12) bond length is 1.55 Å. The P(3)-O(16) bond length is 1.57 Å. The P(3)-O(19) bond length is 1.56 Å. The P(3)-O(20) bond length is 1.55 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  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra, corners with two equivalent Fe(4)O6 octahedra, and  a cornercorner with one Na(7)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 44-55°. The P(4)-O(14) bond length is 1.54 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 5-coordinate geometry to one Na(1), one Na(2), one Na(3), one Na(4), and one C(3) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), one Na(5), one Na(6), and one C(4) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Na(10), one Na(5), one Na(6), one Fe(1), and one C(1) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Na(3), one Na(4), one Li(2), one Fe(2), and one C(2) atom. In the fifth O site, O(5) is bonded to one Na(3), one Na(4), one Li(2), one Fe(1), and one C(1) atom to form distorted ONa2LiFeC trigonal bipyramids that share  a cornercorner with one O(16)NaLiFeP tetrahedra, corners with two equivalent O(11)Na2FeP tetrahedra, and  a cornercorner with one O(20)NaLiFeP trigonal pyramid. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Na(10), one Na(5), one Na(6), 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(1), one Na(3), one Na(5), one Fe(1), and one P(1) atom. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Na(1), one Na(4), one Na(6), one Fe(1), and one P(1) atom. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one Na(2), one Na(3), one Na(5), one Fe(2), and one P(2) atom. In the tenth O site, O(10) is bonded in a 5-coordinate geometry to one Na(2), one Na(4), one Na(6), one Fe(2), and one P(2) atom. In the eleventh O site, O(11) is bonded to one Na(3), one Na(4), one Fe(3), and one P(1) atom to form distorted ONa2FeP tetrahedra that share  a cornercorner with one O(23)Na2LiFeC trigonal bipyramid, corners with two equivalent O(5)Na2LiFeC trigonal bipyramids, and  a cornercorner with one O(20)NaLiFeP trigonal pyramid. In the twelfth O site, O(12) is bonded in a distorted rectangular see-saw-like geometry to one Na(3), one Na(4), one Fe(2), and one P(3) atom. In the thirteenth O site, O(13) is bonded to one Na(5), one Na(6), one Fe(4), and one P(2) atom to form distorted corner-sharing ONa2FeP tetrahedra. In the fourteenth O site, O(14) is bonded in a rectangular see-saw-like geometry to one Na(5), one Na(6), 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(7), one Li(1), one Fe(4), and one P(1) atom. In the sixteenth O site, O(16) is bonded to one Na(7), one Li(1), one Fe(1), and one P(3) atom to form distorted ONaLiFeP tetrahedra that share  a cornercorner with one O(5)Na2LiFeC trigonal bipyramid, corners with two equivalent O(23)Na2LiFeC trigonal bipyramids, and  a cornercorner with one O(20)NaLiFeP trigonal pyramid. In the seventeenth O site, O(17) is bonded in a rectangular see-saw-like geometry to one Na(8), one Na(9), one Fe(3), and one P(2) atom. In the eighteenth O site, O(18) is bonded to one Na(8), one Na(9), one Fe(2), and one P(4) atom to form distorted ONa2FeP tetrahedra that share corners with two equivalent O(24)Na3FeC trigonal bipyramids and  a cornercorner with one O(20)NaLiFeP trigonal pyramid. In the nineteenth O site, O(19) is bonded in a 5-coordinate geometry to one Na(7), one Na(8), one Li(2), one Fe(3), and one P(3) atom. In the twentieth O site, O(20) is bonded to one Na(9), one Li(2), one Fe(3), and one P(3) atom to form distorted ONaLiFeP trigonal pyramids that share  a cornercorner with one O(11)Na2FeP tetrahedra,  a cornercorner with one O(18)Na2FeP tetrahedra,  a cornercorner with one O(16)NaLiFeP tetrahedra,  a cornercorner with one O(23)Na2LiFeC trigonal bipyramid,  a cornercorner with one O(5)Na2LiFeC trigonal bipyramid, and  a cornercorner with one O(24)Na3FeC trigonal bipyramid. In the twenty-first O site, O(21) is bonded in a 4-coordinate geometry to one Na(10), one Na(7), one Na(8), 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 Na(10), one Li(1), one Fe(4), and one P(4) atom. In the twenty-third O site, O(23) is bonded to one Na(1), one Na(7), one Li(1), one Fe(3), and one C(3) atom to form distorted ONa2LiFeC trigonal bipyramids that share  a cornercorner with one O(11)Na2FeP tetrahedra, corners with two equivalent O(16)NaLiFeP tetrahedra, and  a cornercorner with one O(20)NaLiFeP trigonal pyramid. In the twenty-fourth O site, O(24) is bonded to one Na(2), one Na(8), one Na(9), one Fe(4), and one C(4) atom to form distorted ONa3FeC trigonal bipyramids that share  a cornercorner with one O(13)Na2FeP tetrahedra, corners with two equivalent O(18)Na2FeP tetrahedra, and  a cornercorner with one O(20)NaLiFeP trigonal pyramid. In the twenty-fifth O site, O(25) is bonded in a 5-coordinate geometry to one Na(2), one Na(8), one Na(9), one Fe(3), and one C(3) atom. In the twenty-sixth O site, O(26) is bonded in a 1-coordinate geometry to one Na(1), one Na(7), one Fe(4), and one C(4) atom. In the twenty-seventh O site, O(27) is bonded in a 4-coordinate geometry to one Na(10), one Na(7), one Li(1), one Li(2), 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(10), one Na(8), one Na(9), and one C(2) atom.