Na5Fe2P2(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(24), one O(26), one O(7), one O(9), and two equivalent O(1) atoms. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(10), one O(23), one O(25), one O(8), and two equivalent O(2) atoms. In the third Na site, Na(3) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(13), one O(3), one O(5), and two equivalent O(9) atoms. In the fourth Na site, Na(4) is bonded in a 7-coordinate geometry to one O(12), one O(14), one O(2), one O(4), one O(6), and two equivalent O(10) atoms. In the fifth Na site, Na(5) is bonded in a 7-coordinate geometry to one O(15), one O(17), one O(23), one O(25), one O(27), and two equivalent O(19) atoms. In the sixth Na site, Na(6) is bonded in a 7-coordinate geometry to one O(16), one O(18), one O(24), one O(26), one O(28), and two equivalent O(20) atoms. In the seventh Na site, Na(7) is bonded in a 6-coordinate geometry to one O(16), one O(17), one O(22), one O(23), one O(25), and one O(28) atom. In the eighth Na site, Na(8) is bonded in a 7-coordinate geometry to one O(15), one O(18), one O(24), one O(26), one O(27), and two equivalent O(21) atoms. In the ninth Na site, Na(9) is bonded to one O(19), one O(21), one O(4), one O(6), and two equivalent O(27) atoms to form distorted NaO6 octahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Na(9)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and  an edgeedge with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 6-55°. In the tenth Na site, Na(10) is bonded in a 6-coordinate geometry to one O(20), one O(22), one O(3), one O(5), and two equivalent O(28) atoms. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(10), one O(12), one O(16), one O(4), one O(6), and one O(7) atom to form distorted FeO6 octahedra that share corners with two equivalent Na(9)O6 octahedra,  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 corner-sharing octahedral tilt angles range from 6-19°. In the second Fe site, Fe(2) is bonded to one O(13), one O(17), one O(19), one O(22), one O(23), and one O(25) atom to form distorted FeO6 octahedra that share  a cornercorner with one Na(9)O6 octahedra,  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 corner-sharing octahedral tilt angles are 52°. In the third Fe site, Fe(3) is bonded to one O(11), one O(15), one O(3), one O(5), one O(8), and one O(9) atom to form 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(14), one O(18), one O(20), one O(21), one O(24), and one O(26) atom to form distorted FeO6 octahedra that share  a cornercorner with one Na(9)O6 octahedra,  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 corner-sharing octahedral tilt angles are 55°. There are four inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(28), 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(27), 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(2), 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(1), 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(13), one O(17), one O(7), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, and corners with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-51°. In the second P site, P(2) is bonded to one O(10), one O(14), one O(18), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, and corners with two equivalent Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 35-46°. In the third P site, P(3) is bonded to one O(11), one O(15), one O(19), and one O(21) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra, and  an edgeedge with one Na(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 35-50°. In the fourth P site, P(4) is bonded to one O(12), one O(16), one O(20), and one O(22) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, and corners with two equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-51°. There are twenty-eight inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Na(3), two equivalent Na(1), and one C(4) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Na(4), two equivalent Na(2), and one C(3) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Na(10), one Na(3), one Fe(3), and one C(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Na(4), one Na(9), one Fe(1), and one C(2) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Na(10), one Na(3), one Fe(3), and one C(1) atom. In the sixth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to one Na(4), one Na(9), one Fe(1), and one C(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Na(1), one Fe(1), and one P(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Na(2), one Fe(3), and one P(2) atom. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one Na(1), two equivalent Na(3), one Fe(3), and one P(1) atom. In the tenth O site, O(10) is bonded in a 1-coordinate geometry to one Na(2), two equivalent Na(4), one Fe(1), and one P(2) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Na(3), one Fe(3), and one P(3) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Na(4), one Fe(1), and one P(4) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Na(3), one Fe(2), and one P(1) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Na(4), one Fe(4), and one P(2) atom. In the fifteenth O site, O(15) is bonded in a 4-coordinate geometry to one Na(5), one Na(8), one Fe(3), and one P(3) atom. In the sixteenth O site, O(16) is bonded in a 4-coordinate geometry to one Na(6), one Na(7), one Fe(1), and one P(4) atom. In the seventeenth O site, O(17) is bonded in a rectangular see-saw-like geometry to one Na(5), one Na(7), one Fe(2), and one P(1) atom. In the eighteenth O site, O(18) is bonded in a distorted rectangular see-saw-like geometry to one Na(6), one Na(8), one Fe(4), and one P(2) atom. In the nineteenth O site, O(19) is bonded in a 1-coordinate geometry to one Na(9), two equivalent Na(5), one Fe(2), and one P(3) atom. In the twentieth O site, O(20) is bonded in a 5-coordinate geometry to one Na(10), two equivalent Na(6), one Fe(4), and one P(4) atom. In the twenty-first O site, O(21) is bonded in a 5-coordinate geometry to one Na(9), two equivalent Na(8), one Fe(4), and one P(3) atom. In the twenty-second O site, O(22) is bonded in a 4-coordinate geometry to one Na(10), one Na(7), one Fe(2), and one P(4) atom. In the twenty-third O site, O(23) is bonded in a 5-coordinate geometry to one Na(2), one Na(5), one Na(7), one Fe(2), and one C(3) atom. In the twenty-fourth O site, O(24) is bonded in a 1-coordinate geometry to one Na(1), one Na(6), one Na(8), one Fe(4), and one C(4) atom. In the twenty-fifth O site, O(25) is bonded in a 5-coordinate geometry to one Na(2), one Na(5), one Na(7), one Fe(2), and one C(3) atom. In the twenty-sixth O site, O(26) is bonded in a 5-coordinate geometry to one Na(1), one Na(6), one Na(8), one Fe(4), and one C(4) atom. In the twenty-seventh O site, O(27) is bonded in a 5-coordinate geometry to one Na(5), one Na(8), two equivalent Na(9), and one C(2) atom. In the twenty-eighth O site, O(28) is bonded in a 5-coordinate geometry to one Na(6), one Na(7), two equivalent Na(10), and one C(1) atom.
Na5Fe2P2(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(24), one O(26), one O(7), one O(9), and two equivalent O(1) atoms. The Na(1)-O(24) bond length is 2.84 Å. The Na(1)-O(26) bond length is 2.45 Å. The Na(1)-O(7) bond length is 2.27 Å. The Na(1)-O(9) bond length is 2.66 Å. There is one shorter (2.48 Å) and one longer (2.89 Å) Na(1)-O(1) bond length. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(10), one O(23), one O(25), one O(8), and two equivalent O(2) atoms. The Na(2)-O(10) bond length is 2.44 Å. The Na(2)-O(23) bond length is 2.65 Å. The Na(2)-O(25) bond length is 2.40 Å. The Na(2)-O(8) bond length is 2.49 Å. There is one shorter (2.49 Å) and one longer (2.80 Å) Na(2)-O(2) bond length. In the third Na site, Na(3) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(13), one O(3), one O(5), and two equivalent O(9) atoms. The Na(3)-O(1) bond length is 2.30 Å. The Na(3)-O(11) bond length is 2.41 Å. The Na(3)-O(13) bond length is 2.33 Å. The Na(3)-O(3) bond length is 2.65 Å. The Na(3)-O(5) bond length is 2.50 Å. There is one shorter (2.47 Å) and one longer (2.91 Å) Na(3)-O(9) bond length. In the fourth Na site, Na(4) is bonded in a 7-coordinate geometry to one O(12), one O(14), one O(2), one O(4), one O(6), and two equivalent O(10) atoms. The Na(4)-O(12) bond length is 2.30 Å. The Na(4)-O(14) bond length is 2.61 Å. The Na(4)-O(2) bond length is 2.26 Å. The Na(4)-O(4) bond length is 2.60 Å. The Na(4)-O(6) bond length is 2.40 Å. There is one shorter (2.54 Å) and one longer (2.93 Å) Na(4)-O(10) bond length. In the fifth Na site, Na(5) is bonded in a 7-coordinate geometry to one O(15), one O(17), one O(23), one O(25), one O(27), and two equivalent O(19) atoms. The Na(5)-O(15) bond length is 2.67 Å. The Na(5)-O(17) bond length is 2.29 Å. The Na(5)-O(23) bond length is 2.43 Å. The Na(5)-O(25) bond length is 2.60 Å. The Na(5)-O(27) bond length is 2.30 Å. There is one shorter (2.59 Å) and one longer (2.88 Å) Na(5)-O(19) bond length. In the sixth Na site, Na(6) is bonded in a 7-coordinate geometry to one O(16), one O(18), one O(24), one O(26), one O(28), and two equivalent O(20) atoms. The Na(6)-O(16) bond length is 2.40 Å. The Na(6)-O(18) bond length is 2.40 Å. The Na(6)-O(24) bond length is 2.47 Å. The Na(6)-O(26) bond length is 2.67 Å. The Na(6)-O(28) bond length is 2.34 Å. There is one shorter (2.51 Å) and one longer (2.86 Å) Na(6)-O(20) bond length. In the seventh Na site, Na(7) is bonded in a 6-coordinate geometry to one O(16), one O(17), one O(22), one O(23), one O(25), and one O(28) atom. The Na(7)-O(16) bond length is 2.48 Å. The Na(7)-O(17) bond length is 2.31 Å. The Na(7)-O(22) bond length is 2.47 Å. The Na(7)-O(23) bond length is 2.43 Å. The Na(7)-O(25) bond length is 2.67 Å. The Na(7)-O(28) bond length is 2.40 Å. In the eighth Na site, Na(8) is bonded in a 7-coordinate geometry to one O(15), one O(18), one O(24), one O(26), one O(27), and two equivalent O(21) atoms. The Na(8)-O(15) bond length is 2.55 Å. The Na(8)-O(18) bond length is 2.34 Å. The Na(8)-O(24) bond length is 2.43 Å. The Na(8)-O(26) bond length is 2.65 Å. The Na(8)-O(27) bond length is 2.26 Å. There is one shorter (2.57 Å) and one longer (2.85 Å) Na(8)-O(21) bond length. In the ninth Na site, Na(9) is bonded to one O(19), one O(21), one O(4), one O(6), and two equivalent O(27) atoms to form distorted NaO6 octahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Na(9)O6 octahedra, corners with two equivalent Fe(1)O6 octahedra, and  an edgeedge with one P(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 6-55°. The Na(9)-O(19) bond length is 2.47 Å. The Na(9)-O(21) bond length is 2.66 Å. The Na(9)-O(4) bond length is 2.28 Å. The Na(9)-O(6) bond length is 2.46 Å. There is one shorter (2.43 Å) and one longer (2.84 Å) Na(9)-O(27) bond length. In the tenth Na site, Na(10) is bonded in a 6-coordinate geometry to one O(20), one O(22), one O(3), one O(5), and two equivalent O(28) atoms. The Na(10)-O(20) bond length is 2.73 Å. The Na(10)-O(22) bond length is 2.41 Å. The Na(10)-O(3) bond length is 2.34 Å. The Na(10)-O(5) bond length is 2.58 Å. There is one shorter (2.44 Å) and one longer (2.85 Å) Na(10)-O(28) bond length. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(10), one O(12), one O(16), one O(4), one O(6), and one O(7) atom to form distorted FeO6 octahedra that share corners with two equivalent Na(9)O6 octahedra,  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 corner-sharing octahedral tilt angles range from 6-19°. The Fe(1)-O(10) bond length is 2.33 Å. The Fe(1)-O(12) bond length is 2.07 Å. The Fe(1)-O(16) bond length is 2.15 Å. The Fe(1)-O(4) bond length is 2.24 Å. The Fe(1)-O(6) bond length is 2.29 Å. The Fe(1)-O(7) bond length is 2.11 Å. In the second Fe site, Fe(2) is bonded to one O(13), one O(17), one O(19), one O(22), one O(23), and one O(25) atom to form distorted FeO6 octahedra that share  a cornercorner with one Na(9)O6 octahedra,  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 corner-sharing octahedral tilt angles are 52°. The Fe(2)-O(13) bond length is 2.00 Å. The Fe(2)-O(17) bond length is 2.12 Å. The Fe(2)-O(19) bond length is 2.27 Å. The Fe(2)-O(22) bond length is 2.20 Å. The Fe(2)-O(23) bond length is 2.26 Å. The Fe(2)-O(25) bond length is 2.23 Å. In the third Fe site, Fe(3) is bonded to one O(11), one O(15), one O(3), one O(5), one O(8), and one O(9) atom to form 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 1.99 Å. The Fe(3)-O(15) bond length is 2.02 Å. The Fe(3)-O(3) bond length is 2.16 Å. The Fe(3)-O(5) bond length is 2.17 Å. The Fe(3)-O(8) bond length is 1.99 Å. The Fe(3)-O(9) bond length is 2.05 Å. In the fourth Fe site, Fe(4) is bonded to one O(14), one O(18), one O(20), one O(21), one O(24), and one O(26) atom to form distorted FeO6 octahedra that share  a cornercorner with one Na(9)O6 octahedra,  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 corner-sharing octahedral tilt angles are 55°. The Fe(4)-O(14) bond length is 1.93 Å. The Fe(4)-O(18) bond length is 1.99 Å. The Fe(4)-O(20) bond length is 2.03 Å. The Fe(4)-O(21) bond length is 2.04 Å. The Fe(4)-O(24) bond length is 2.13 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(28), one O(3), and one O(5) atom. The C(1)-O(28) bond length is 1.29 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(27), one O(4), and one O(6) atom. The C(2)-O(27) bond length is 1.31 Å. The C(2)-O(4) bond length is 1.30 Å. The C(2)-O(6) bond length is 1.29 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one O(2), one O(23), and one O(25) atom. The C(3)-O(2) bond length is 1.27 Å. The C(3)-O(23) bond length is 1.32 Å. The C(3)-O(25) bond length is 1.32 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one O(1), one O(24), and one O(26) atom. The C(4)-O(1) bond length is 1.26 Å. The C(4)-O(24) bond length is 1.33 Å. The C(4)-O(26) bond length is 1.32 Å. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(13), one O(17), one O(7), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, and corners with two equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-51°. The P(1)-O(13) bond length is 1.55 Å. The P(1)-O(17) bond length is 1.55 Å. The P(1)-O(7) bond length is 1.53 Å. The P(1)-O(9) bond length is 1.58 Å. In the second P site, P(2) is bonded to one O(10), one O(14), one O(18), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra, and corners with two equivalent Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 35-46°. The P(2)-O(10) bond length is 1.53 Å. The P(2)-O(14) bond length is 1.57 Å. The P(2)-O(18) bond length is 1.57 Å. The P(2)-O(8) bond length is 1.55 Å. In the third P site, P(3) is bonded to one O(11), one O(15), one O(19), and one O(21) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra, and  an edgeedge with one Na(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 35-50°. The P(3)-O(11) bond length is 1.55 Å. The P(3)-O(15) bond length is 1.58 Å. The P(3)-O(19) bond length is 1.54 Å. The P(3)-O(21) bond length is 1.57 Å. In the fourth P site, P(4) is bonded to one O(12), one O(16), one O(20), and one O(22) atom to form PO4 tetrahedra that share  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, and corners with two equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-51°. The P(4)-O(12) bond length is 1.53 Å. The P(4)-O(16) bond length is 1.56 Å. The P(4)-O(20) bond length is 1.59 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 4-coordinate geometry to one Na(3), two equivalent Na(1), and one C(4) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Na(4), two equivalent Na(2), and one C(3) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Na(10), one Na(3), one Fe(3), and one C(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Na(4), one Na(9), one Fe(1), and one C(2) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Na(10), one Na(3), one Fe(3), and one C(1) atom. In the sixth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to one Na(4), one Na(9), one Fe(1), and one C(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Na(1), one Fe(1), and one P(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Na(2), one Fe(3), and one P(2) atom. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one Na(1), two equivalent Na(3), one Fe(3), and one P(1) atom. In the tenth O site, O(10) is bonded in a 1-coordinate geometry to one Na(2), two equivalent Na(4), one Fe(1), and one P(2) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Na(3), one Fe(3), and one P(3) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Na(4), one Fe(1), and one P(4) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Na(3), one Fe(2), and one P(1) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one Na(4), one Fe(4), and one P(2) atom. In the fifteenth O site, O(15) is bonded in a 4-coordinate geometry to one Na(5), one Na(8), one Fe(3), and one P(3) atom. In the sixteenth O site, O(16) is bonded in a 4-coordinate geometry to one Na(6), one Na(7), one Fe(1), and one P(4) atom. In the seventeenth O site, O(17) is bonded in a rectangular see-saw-like geometry to one Na(5), one Na(7), one Fe(2), and one P(1) atom. In the eighteenth O site, O(18) is bonded in a distorted rectangular see-saw-like geometry to one Na(6), one Na(8), one Fe(4), and one P(2) atom. In the nineteenth O site, O(19) is bonded in a 1-coordinate geometry to one Na(9), two equivalent Na(5), one Fe(2), and one P(3) atom. In the twentieth O site, O(20) is bonded in a 5-coordinate geometry to one Na(10), two equivalent Na(6), one Fe(4), and one P(4) atom. In the twenty-first O site, O(21) is bonded in a 5-coordinate geometry to one Na(9), two equivalent Na(8), one Fe(4), and one P(3) atom. In the twenty-second O site, O(22) is bonded in a 4-coordinate geometry to one Na(10), one Na(7), one Fe(2), and one P(4) atom. In the twenty-third O site, O(23) is bonded in a 5-coordinate geometry to one Na(2), one Na(5), one Na(7), one Fe(2), and one C(3) atom. In the twenty-fourth O site, O(24) is bonded in a 1-coordinate geometry to one Na(1), one Na(6), one Na(8), one Fe(4), and one C(4) atom. In the twenty-fifth O site, O(25) is bonded in a 5-coordinate geometry to one Na(2), one Na(5), one Na(7), one Fe(2), and one C(3) atom. In the twenty-sixth O site, O(26) is bonded in a 5-coordinate geometry to one Na(1), one Na(6), one Na(8), one Fe(4), and one C(4) atom. In the twenty-seventh O site, O(27) is bonded in a 5-coordinate geometry to one Na(5), one Na(8), two equivalent Na(9), and one C(2) atom. In the twenty-eighth O site, O(28) is bonded in a 5-coordinate geometry to one Na(6), one Na(7), two equivalent Na(10), and one C(1) atom.