NaLi2FeCPO7 crystallizes in the triclinic P1 space group. There are four 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(17), one O(18), one O(19), one O(21), one O(24), one O(25), and one O(28) atom. There are eight inequivalent Li sites. In the first Li site, Li(1) is bonded in a distorted see-saw-like geometry to one O(1), one O(10), one O(11), and one O(12) atom. In the second Li site, Li(2) is bonded in a distorted see-saw-like geometry to one O(13), one O(14), one O(2), and one O(7) atom. In the third Li site, Li(3) is bonded in a 5-coordinate geometry to one O(13), one O(14), one O(2), one O(6), and one O(8) atom. In the fourth Li site, Li(4) is bonded in a 6-coordinate geometry to one O(15), one O(16), one O(21), one O(23), one O(26), and one O(27) atom. In the fifth Li site, Li(5) is bonded in a 6-coordinate geometry to one O(15), one O(16), one O(22), one O(23), one O(26), and one O(27) atom. In the sixth Li site, Li(6) is bonded in a 4-coordinate geometry to one O(17), one O(18), one O(20), one O(24), and one O(28) atom. In the seventh Li site, Li(7) is bonded in a 4-coordinate geometry to one O(19), one O(20), one O(27), and one O(4) atom. In the eighth Li site, Li(8) 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 P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. 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, and corners with two equivalent P(4)O4 tetrahedra. 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 and  a cornercorner with one Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-65°. 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 and  a cornercorner with one Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-64°. 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. The corner-sharing octahedral tilt angles range from 48-49°. 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. The corner-sharing octahedral tilt angles range from 45-50°. 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 Li(1), 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 Li(2), one Li(3), and one C(4) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Li(8), 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(3), one Li(7), one Fe(2), and one C(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Na(3), one Fe(1), and one C(1) atom. In the sixth O site, O(6) is bonded in a 1-coordinate geometry to one Li(3), one Fe(2), and one C(2) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Na(1), one Na(3), one Li(2), one Fe(1), and one P(1) atom. In the eighth O site, O(8) is bonded to one Na(1), one Li(3), one Fe(1), and one P(1) atom to form distorted ONaLiFeP trigonal pyramids that share  a cornercorner with one O(13)Li2FeP tetrahedra,  a cornercorner with one O(16)Li2FeP tetrahedra,  a cornercorner with one O(11)NaLiFeP tetrahedra,  a cornercorner with one O(15)Li2FeP trigonal pyramid, and  an edgeedge with one O(14)Li2FeP trigonal pyramid. In the ninth O site, O(9) is bonded to one Na(2), one Na(3), one Fe(2), and one P(2) atom to form distorted ONa2FeP trigonal pyramids that share  a cornercorner with one O(13)Li2FeP tetrahedra,  a cornercorner with one O(11)NaLiFeP tetrahedra,  a cornercorner with one O(18)NaLiFeP tetrahedra,  a cornercorner with one O(10)NaLiFeP trigonal pyramid, and  an edgeedge with one O(10)NaLiFeP trigonal pyramid. In the tenth O site, O(10) is bonded to one Na(2), one Li(1), one Fe(2), and one P(2) atom to form distorted ONaLiFeP trigonal pyramids that share  a cornercorner with one O(13)Li2FeP tetrahedra,  a cornercorner with one O(11)NaLiFeP tetrahedra,  a cornercorner with one O(18)NaLiFeP tetrahedra,  a cornercorner with one O(9)Na2FeP trigonal pyramid, and  an edgeedge with one O(9)Na2FeP trigonal pyramid. In the eleventh O site, O(11) is bonded to one Na(3), one Li(1), one Fe(3), and one P(1) atom to form distorted ONaLiFeP tetrahedra that share  a cornercorner with one O(15)Li2FeP trigonal pyramid,  a cornercorner with one O(20)Li2FeP trigonal pyramid,  a cornercorner with one O(9)Na2FeP trigonal pyramid,  a cornercorner with one O(10)NaLiFeP trigonal pyramid, and  a cornercorner with one O(8)NaLiFeP trigonal pyramid. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Na(3), one Li(1), one Fe(2), and one P(3) atom. In the thirteenth O site, O(13) is bonded to one Li(2), one Li(3), one Fe(4), and one P(2) atom to form OLi2FeP tetrahedra that share  a cornercorner with one O(15)Li2FeP trigonal pyramid,  a cornercorner with one O(22)Li2FeP trigonal pyramid,  a cornercorner with one O(9)Na2FeP trigonal pyramid,  a cornercorner with one O(10)NaLiFeP trigonal pyramid,  a cornercorner with one O(8)NaLiFeP trigonal pyramid, and corners with two equivalent O(14)Li2FeP trigonal pyramids. In the fourteenth O site, O(14) is bonded to one Li(2), one Li(3), one Fe(1), and one P(4) atom to form distorted OLi2FeP trigonal pyramids that share  a cornercorner with one O(16)Li2FeP tetrahedra,  a cornercorner with one O(18)NaLiFeP tetrahedra, corners with two equivalent O(13)Li2FeP tetrahedra,  a cornercorner with one O(22)Li2FeP trigonal pyramid, and  an edgeedge with one O(8)NaLiFeP trigonal pyramid. In the fifteenth O site, O(15) is bonded to one Li(4), one Li(5), one Fe(4), and one P(1) atom to form distorted OLi2FeP trigonal pyramids that share  a cornercorner with one O(13)Li2FeP tetrahedra,  a cornercorner with one O(11)NaLiFeP tetrahedra, corners with two equivalent O(16)Li2FeP tetrahedra, corners with two equivalent O(27)Li3C tetrahedra,  a cornercorner with one O(8)NaLiFeP trigonal pyramid, and  an edgeedge with one O(22)Li2FeP trigonal pyramid. In the sixteenth O site, O(16) is bonded to one Li(4), one Li(5), one Fe(1), and one P(3) atom to form OLi2FeP tetrahedra that share  a cornercorner with one O(14)Li2FeP trigonal pyramid,  a cornercorner with one O(20)Li2FeP trigonal pyramid,  a cornercorner with one O(22)Li2FeP trigonal pyramid,  a cornercorner with one O(8)NaLiFeP trigonal pyramid, corners with two equivalent O(15)Li2FeP trigonal pyramids, and  an edgeedge with one O(27)Li3C tetrahedra. In the seventeenth O site, O(17) is bonded in a 4-coordinate geometry to one Na(4), one Li(6), one Fe(3), and one P(2) atom. In the eighteenth O site, O(18) is bonded to one Na(4), one Li(6), one Fe(2), and one P(4) atom to form distorted ONaLiFeP tetrahedra that share  a cornercorner with one O(14)Li2FeP trigonal pyramid,  a cornercorner with one O(20)Li2FeP trigonal pyramid,  a cornercorner with one O(22)Li2FeP trigonal pyramid,  a cornercorner with one O(9)Na2FeP trigonal pyramid,  a cornercorner with one O(10)NaLiFeP trigonal pyramid, and  an edgeedge with one O(28)NaLi2C tetrahedra. In the nineteenth O site, O(19) is bonded in a 4-coordinate geometry to one Na(4), one Li(7), one Fe(3), and one P(3) atom. In the twentieth O site, O(20) is bonded to one Li(6), one Li(7), one Fe(3), and one P(3) atom to form distorted OLi2FeP trigonal pyramids that share  a cornercorner with one O(16)Li2FeP tetrahedra,  a cornercorner with one O(27)Li3C tetrahedra,  a cornercorner with one O(28)NaLi2C tetrahedra,  a cornercorner with one O(11)NaLiFeP tetrahedra, and  a cornercorner with one O(18)NaLiFeP tetrahedra. In the twenty-first O site, O(21) is bonded in a 4-coordinate geometry to one Na(4), one Li(4), one Li(8), one Fe(4), and one P(4) atom. In the twenty-second O site, O(22) is bonded to one Li(5), one Li(8), one Fe(4), and one P(4) atom to form distorted OLi2FeP trigonal pyramids that share  a cornercorner with one O(13)Li2FeP tetrahedra,  a cornercorner with one O(16)Li2FeP tetrahedra,  a cornercorner with one O(27)Li3C tetrahedra,  a cornercorner with one O(28)NaLi2C tetrahedra,  a cornercorner with one O(18)NaLiFeP tetrahedra,  a cornercorner with one O(14)Li2FeP trigonal pyramid, and  an edgeedge with one O(15)Li2FeP trigonal pyramid. In the twenty-third O site, O(23) is bonded in a distorted single-bond geometry to one Na(1), one Li(4), one Li(5), one Fe(3), and one C(3) atom. In the twenty-fourth O site, O(24) is bonded in a 5-coordinate geometry to one Na(2), one Na(4), one Li(6), one Fe(4), and one C(4) atom. In the twenty-fifth O site, O(25) is bonded in a 1-coordinate geometry to one Na(2), one Na(4), 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 Li(4), one Li(5), one Fe(4), and one C(4) atom. In the twenty-seventh O site, O(27) is bonded to one Li(4), one Li(5), one Li(7), and one C(1) atom to form a mixture of edge and corner-sharing OLi3C tetrahedra. In the twenty-eighth O site, O(28) is bonded to one Na(4), one Li(6), one Li(8), and one C(2) atom to form distorted ONaLi2C tetrahedra that share  a cornercorner with one O(20)Li2FeP trigonal pyramid,  a cornercorner with one O(22)Li2FeP trigonal pyramid, and  an edgeedge with one O(18)NaLiFeP tetrahedra.
NaLi2FeCPO7 crystallizes in the triclinic P1 space group. There are four 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 2.37 Å. The Na(1)-O(2) bond length is 2.62 Å. The Na(1)-O(23) bond length is 2.43 Å. The Na(1)-O(26) bond length is 2.22 Å. The Na(1)-O(7) bond length is 2.44 Å. The Na(1)-O(8) bond length is 2.41 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 2.68 Å. The Na(2)-O(10) bond length is 2.42 Å. The Na(2)-O(2) bond length is 2.40 Å. The Na(2)-O(24) bond length is 2.38 Å. The Na(2)-O(25) bond length is 2.24 Å. The Na(2)-O(9) bond length is 2.38 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 2.34 Å. The Na(3)-O(11) bond length is 2.48 Å. The Na(3)-O(12) bond length is 2.35 Å. The Na(3)-O(4) bond length is 2.62 Å. The Na(3)-O(5) bond length is 2.40 Å. The Na(3)-O(7) bond length is 2.92 Å. The Na(3)-O(9) bond length is 2.40 Å. In the fourth Na site, Na(4) 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(4)-O(17) bond length is 2.33 Å. The Na(4)-O(18) bond length is 2.44 Å. The Na(4)-O(19) bond length is 2.42 Å. The Na(4)-O(21) bond length is 2.86 Å. The Na(4)-O(24) bond length is 2.38 Å. The Na(4)-O(25) bond length is 2.52 Å. The Na(4)-O(28) bond length is 2.35 Å. There are eight inequivalent Li sites. In the first Li site, Li(1) is bonded in a distorted see-saw-like geometry to one O(1), one O(10), one O(11), and one O(12) atom. The Li(1)-O(1) bond length is 2.06 Å. The Li(1)-O(10) bond length is 2.08 Å. The Li(1)-O(11) bond length is 2.12 Å. The Li(1)-O(12) bond length is 2.13 Å. In the second Li site, Li(2) is bonded in a distorted see-saw-like geometry to one O(13), one O(14), one O(2), and one O(7) atom. The Li(2)-O(13) bond length is 2.21 Å. The Li(2)-O(14) bond length is 2.20 Å. The Li(2)-O(2) bond length is 2.13 Å. The Li(2)-O(7) bond length is 2.17 Å. In the third Li site, Li(3) is bonded in a 5-coordinate geometry to one O(13), one O(14), one O(2), one O(6), and one O(8) atom. The Li(3)-O(13) bond length is 2.18 Å. The Li(3)-O(14) bond length is 2.21 Å. The Li(3)-O(2) bond length is 2.17 Å. The Li(3)-O(6) bond length is 2.56 Å. The Li(3)-O(8) bond length is 2.04 Å. In the fourth Li site, Li(4) is bonded in a 6-coordinate geometry to one O(15), one O(16), one O(21), one O(23), one O(26), and one O(27) atom. The Li(4)-O(15) bond length is 2.15 Å. The Li(4)-O(16) bond length is 2.25 Å. The Li(4)-O(21) bond length is 2.20 Å. The Li(4)-O(23) bond length is 2.58 Å. The Li(4)-O(26) bond length is 2.60 Å. The Li(4)-O(27) bond length is 2.16 Å. In the fifth Li site, Li(5) is bonded in a 6-coordinate geometry to one O(15), one O(16), one O(22), one O(23), one O(26), and one O(27) atom. The Li(5)-O(15) bond length is 2.19 Å. The Li(5)-O(16) bond length is 2.18 Å. The Li(5)-O(22) bond length is 2.06 Å. The Li(5)-O(23) bond length is 2.50 Å. The Li(5)-O(26) bond length is 2.63 Å. The Li(5)-O(27) bond length is 2.20 Å. In the sixth Li site, Li(6) is bonded in a 4-coordinate geometry to one O(17), one O(18), one O(20), one O(24), and one O(28) atom. The Li(6)-O(17) bond length is 2.09 Å. The Li(6)-O(18) bond length is 2.12 Å. The Li(6)-O(20) bond length is 2.12 Å. The Li(6)-O(24) bond length is 2.59 Å. The Li(6)-O(28) bond length is 2.11 Å. In the seventh Li site, Li(7) is bonded in a 4-coordinate geometry to one O(19), one O(20), one O(27), and one O(4) atom. The Li(7)-O(19) bond length is 2.19 Å. The Li(7)-O(20) bond length is 2.32 Å. The Li(7)-O(27) bond length is 2.07 Å. The Li(7)-O(4) bond length is 2.02 Å. In the eighth Li site, Li(8) is bonded in a 4-coordinate geometry to one O(21), one O(22), one O(28), and one O(3) atom. The Li(8)-O(21) bond length is 2.31 Å. The Li(8)-O(22) bond length is 2.26 Å. The Li(8)-O(28) bond length is 2.02 Å. The Li(8)-O(3) bond length is 1.98 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 2.15 Å. The Fe(1)-O(16) bond length is 2.09 Å. The Fe(1)-O(3) bond length is 2.53 Å. The Fe(1)-O(5) bond length is 2.12 Å. The Fe(1)-O(7) bond length is 2.12 Å. The Fe(1)-O(8) bond length is 2.10 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 2.12 Å. The Fe(2)-O(12) bond length is 2.19 Å. The Fe(2)-O(18) bond length is 2.08 Å. The Fe(2)-O(4) bond length is 2.59 Å. The Fe(2)-O(6) bond length is 2.10 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, and corners with two equivalent P(3)O4 tetrahedra. The Fe(3)-O(11) bond length is 2.08 Å. The Fe(3)-O(17) bond length is 2.22 Å. The Fe(3)-O(19) bond length is 2.14 Å. The Fe(3)-O(20) bond length is 2.13 Å. The Fe(3)-O(23) bond length is 2.27 Å. The Fe(3)-O(25) bond length is 2.21 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, and corners with two equivalent P(4)O4 tetrahedra. The Fe(4)-O(13) bond length is 2.08 Å. The Fe(4)-O(15) bond length is 2.17 Å. The Fe(4)-O(21) bond length is 2.14 Å. The Fe(4)-O(22) bond length is 2.13 Å. The Fe(4)-O(24) bond length is 2.29 Å. The Fe(4)-O(26) bond length is 2.19 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 1.30 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 and  a cornercorner with one Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-65°. 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 1.55 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 and  a cornercorner with one Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-64°. The P(2)-O(10) bond length is 1.55 Å. The P(2)-O(13) bond length is 1.58 Å. The P(2)-O(17) bond length is 1.55 Å. The P(2)-O(9) bond length is 1.54 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. The corner-sharing octahedral tilt angles range from 48-49°. 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 1.55 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 corners with two equivalent Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-50°. The P(4)-O(14) bond length is 1.56 Å. The P(4)-O(18) bond length is 1.57 Å. The P(4)-O(21) bond length is 1.55 Å. The P(4)-O(22) bond length is 1.55 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 Li(1), 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 Li(2), one Li(3), and one C(4) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Li(8), 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(3), one Li(7), one Fe(2), and one C(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Na(3), one Fe(1), and one C(1) atom. In the sixth O site, O(6) is bonded in a 1-coordinate geometry to one Li(3), one Fe(2), and one C(2) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Na(1), one Na(3), one Li(2), one Fe(1), and one P(1) atom. In the eighth O site, O(8) is bonded to one Na(1), one Li(3), one Fe(1), and one P(1) atom to form distorted ONaLiFeP trigonal pyramids that share  a cornercorner with one O(13)Li2FeP tetrahedra,  a cornercorner with one O(16)Li2FeP tetrahedra,  a cornercorner with one O(11)NaLiFeP tetrahedra,  a cornercorner with one O(15)Li2FeP trigonal pyramid, and  an edgeedge with one O(14)Li2FeP trigonal pyramid. In the ninth O site, O(9) is bonded to one Na(2), one Na(3), one Fe(2), and one P(2) atom to form distorted ONa2FeP trigonal pyramids that share  a cornercorner with one O(13)Li2FeP tetrahedra,  a cornercorner with one O(11)NaLiFeP tetrahedra,  a cornercorner with one O(18)NaLiFeP tetrahedra,  a cornercorner with one O(10)NaLiFeP trigonal pyramid, and  an edgeedge with one O(10)NaLiFeP trigonal pyramid. In the tenth O site, O(10) is bonded to one Na(2), one Li(1), one Fe(2), and one P(2) atom to form distorted ONaLiFeP trigonal pyramids that share  a cornercorner with one O(13)Li2FeP tetrahedra,  a cornercorner with one O(11)NaLiFeP tetrahedra,  a cornercorner with one O(18)NaLiFeP tetrahedra,  a cornercorner with one O(9)Na2FeP trigonal pyramid, and  an edgeedge with one O(9)Na2FeP trigonal pyramid. In the eleventh O site, O(11) is bonded to one Na(3), one Li(1), one Fe(3), and one P(1) atom to form distorted ONaLiFeP tetrahedra that share  a cornercorner with one O(15)Li2FeP trigonal pyramid,  a cornercorner with one O(20)Li2FeP trigonal pyramid,  a cornercorner with one O(9)Na2FeP trigonal pyramid,  a cornercorner with one O(10)NaLiFeP trigonal pyramid, and  a cornercorner with one O(8)NaLiFeP trigonal pyramid. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Na(3), one Li(1), one Fe(2), and one P(3) atom. In the thirteenth O site, O(13) is bonded to one Li(2), one Li(3), one Fe(4), and one P(2) atom to form OLi2FeP tetrahedra that share  a cornercorner with one O(15)Li2FeP trigonal pyramid,  a cornercorner with one O(22)Li2FeP trigonal pyramid,  a cornercorner with one O(9)Na2FeP trigonal pyramid,  a cornercorner with one O(10)NaLiFeP trigonal pyramid,  a cornercorner with one O(8)NaLiFeP trigonal pyramid, and corners with two equivalent O(14)Li2FeP trigonal pyramids. In the fourteenth O site, O(14) is bonded to one Li(2), one Li(3), one Fe(1), and one P(4) atom to form distorted OLi2FeP trigonal pyramids that share  a cornercorner with one O(16)Li2FeP tetrahedra,  a cornercorner with one O(18)NaLiFeP tetrahedra, corners with two equivalent O(13)Li2FeP tetrahedra,  a cornercorner with one O(22)Li2FeP trigonal pyramid, and  an edgeedge with one O(8)NaLiFeP trigonal pyramid. In the fifteenth O site, O(15) is bonded to one Li(4), one Li(5), one Fe(4), and one P(1) atom to form distorted OLi2FeP trigonal pyramids that share  a cornercorner with one O(13)Li2FeP tetrahedra,  a cornercorner with one O(11)NaLiFeP tetrahedra, corners with two equivalent O(16)Li2FeP tetrahedra, corners with two equivalent O(27)Li3C tetrahedra,  a cornercorner with one O(8)NaLiFeP trigonal pyramid, and  an edgeedge with one O(22)Li2FeP trigonal pyramid. In the sixteenth O site, O(16) is bonded to one Li(4), one Li(5), one Fe(1), and one P(3) atom to form OLi2FeP tetrahedra that share  a cornercorner with one O(14)Li2FeP trigonal pyramid,  a cornercorner with one O(20)Li2FeP trigonal pyramid,  a cornercorner with one O(22)Li2FeP trigonal pyramid,  a cornercorner with one O(8)NaLiFeP trigonal pyramid, corners with two equivalent O(15)Li2FeP trigonal pyramids, and  an edgeedge with one O(27)Li3C tetrahedra. In the seventeenth O site, O(17) is bonded in a 4-coordinate geometry to one Na(4), one Li(6), one Fe(3), and one P(2) atom. In the eighteenth O site, O(18) is bonded to one Na(4), one Li(6), one Fe(2), and one P(4) atom to form distorted ONaLiFeP tetrahedra that share  a cornercorner with one O(14)Li2FeP trigonal pyramid,  a cornercorner with one O(20)Li2FeP trigonal pyramid,  a cornercorner with one O(22)Li2FeP trigonal pyramid,  a cornercorner with one O(9)Na2FeP trigonal pyramid,  a cornercorner with one O(10)NaLiFeP trigonal pyramid, and  an edgeedge with one O(28)NaLi2C tetrahedra. In the nineteenth O site, O(19) is bonded in a 4-coordinate geometry to one Na(4), one Li(7), one Fe(3), and one P(3) atom. In the twentieth O site, O(20) is bonded to one Li(6), one Li(7), one Fe(3), and one P(3) atom to form distorted OLi2FeP trigonal pyramids that share  a cornercorner with one O(16)Li2FeP tetrahedra,  a cornercorner with one O(27)Li3C tetrahedra,  a cornercorner with one O(28)NaLi2C tetrahedra,  a cornercorner with one O(11)NaLiFeP tetrahedra, and  a cornercorner with one O(18)NaLiFeP tetrahedra. In the twenty-first O site, O(21) is bonded in a 4-coordinate geometry to one Na(4), one Li(4), one Li(8), one Fe(4), and one P(4) atom. In the twenty-second O site, O(22) is bonded to one Li(5), one Li(8), one Fe(4), and one P(4) atom to form distorted OLi2FeP trigonal pyramids that share  a cornercorner with one O(13)Li2FeP tetrahedra,  a cornercorner with one O(16)Li2FeP tetrahedra,  a cornercorner with one O(27)Li3C tetrahedra,  a cornercorner with one O(28)NaLi2C tetrahedra,  a cornercorner with one O(18)NaLiFeP tetrahedra,  a cornercorner with one O(14)Li2FeP trigonal pyramid, and  an edgeedge with one O(15)Li2FeP trigonal pyramid. In the twenty-third O site, O(23) is bonded in a distorted single-bond geometry to one Na(1), one Li(4), one Li(5), one Fe(3), and one C(3) atom. In the twenty-fourth O site, O(24) is bonded in a 5-coordinate geometry to one Na(2), one Na(4), one Li(6), one Fe(4), and one C(4) atom. In the twenty-fifth O site, O(25) is bonded in a 1-coordinate geometry to one Na(2), one Na(4), 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 Li(4), one Li(5), one Fe(4), and one C(4) atom. In the twenty-seventh O site, O(27) is bonded to one Li(4), one Li(5), one Li(7), and one C(1) atom to form a mixture of edge and corner-sharing OLi3C tetrahedra. In the twenty-eighth O site, O(28) is bonded to one Na(4), one Li(6), one Li(8), and one C(2) atom to form distorted ONaLi2C tetrahedra that share  a cornercorner with one O(20)Li2FeP trigonal pyramid,  a cornercorner with one O(22)Li2FeP trigonal pyramid, and  an edgeedge with one O(18)NaLiFeP tetrahedra.