Na4C4Bi2SO16 crystallizes in the triclinic P1 space group. There are eight inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(18), one O(2), one O(20), one O(22), one O(26), and one O(3) atom to form distorted NaO6 octahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Na(3)O6 octahedra,  a cornercorner with one Na(5)O6 octahedra,  a cornercorner with one Na(7)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra,  an edgeedge with one Bi(4)O6 octahedra, and  an edgeedge with one S(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 59-83°. In the second Na site, Na(2) is bonded to one O(1), one O(15), one O(22), one O(23), one O(27), and one O(4) atom to form distorted NaO6 octahedra that share  a cornercorner with one Na(1)O6 octahedra,  a cornercorner with one Na(3)O6 octahedra,  a cornercorner with one Na(4)O6 octahedra,  a cornercorner with one Na(5)O6 octahedra,  a cornercorner with one Na(6)O6 octahedra,  a cornercorner with one Na(7)O6 octahedra,  a cornercorner with one Na(8)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(4)O6 octahedra, and  an edgeedge with one S(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 56-83°. In the third Na site, Na(3) is bonded to one O(13), one O(14), one O(26), one O(27), one O(32), and one O(8) atom to form distorted NaO6 octahedra that share  a cornercorner with one Na(1)O6 octahedra,  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Na(4)O6 octahedra,  a cornercorner with one Na(6)O6 octahedra,  a cornercorner with one Na(8)O6 octahedra,  an edgeedge with one Bi(3)O6 octahedra,  an edgeedge with one Bi(4)O6 octahedra, and  an edgeedge with one S(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 59-84°. In the fourth Na site, Na(4) is bonded to one O(12), one O(13), one O(16), one O(4), one O(5), and one O(7) atom to form distorted NaO6 octahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Na(3)O6 octahedra,  a cornercorner with one Na(5)O6 octahedra,  a cornercorner with one Na(7)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(3)O6 octahedra, and  an edgeedge with one S(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 55-85°. In the fifth Na site, Na(5) is bonded to one O(10), one O(21), one O(22), one O(31), one O(5), and one O(9) atom to form distorted NaO6 octahedra that share  a cornercorner with one Na(1)O6 octahedra,  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Na(4)O6 octahedra,  a cornercorner with one Na(6)O6 octahedra,  a cornercorner with one Na(8)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra, and  an edgeedge with one S(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 58-85°. In the sixth Na site, Na(6) is bonded to one O(17), one O(19), one O(21), one O(27), one O(28), and one O(29) atom to form distorted NaO6 octahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Na(3)O6 octahedra,  a cornercorner with one Na(5)O6 octahedra,  a cornercorner with one Na(7)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(3)O6 octahedra, and  an edgeedge with one S(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 56-81°. In the seventh Na site, Na(7) is bonded to one O(1), one O(19), one O(20), one O(25), one O(6), and one O(7) atom to form distorted NaO6 octahedra that share  a cornercorner with one Na(1)O6 octahedra,  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Na(4)O6 octahedra,  a cornercorner with one Na(6)O6 octahedra,  a cornercorner with one Na(8)O6 octahedra,  an edgeedge with one Bi(3)O6 octahedra,  an edgeedge with one Bi(4)O6 octahedra, and  an edgeedge with one S(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 55-83°. In the eighth Na site, Na(8) is bonded to one O(11), one O(14), one O(15), one O(30), one O(31), and one O(6) atom to form distorted NaO6 octahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Na(3)O6 octahedra,  a cornercorner with one Na(5)O6 octahedra,  a cornercorner with one Na(7)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra,  an edgeedge with one Bi(4)O6 octahedra, and  an edgeedge with one S(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 62-84°. There are eight inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(1), 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(2), one O(4), and one O(8) atom. In the third C site, C(3) is bonded in a trigonal planar geometry to one O(16), one O(20), and one O(9) atom. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one O(10), one O(15), and one O(19) atom. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one O(14), one O(17), and one O(23) atom. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one O(13), one O(18), and one O(24) atom. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one O(25), one O(29), and one O(31) atom. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one O(28), one O(30), and one O(32) atom. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(23), one O(28), one O(29), one O(4), one O(5), and one O(9) atom to form BiO6 octahedra that share  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Na(4)O6 octahedra,  an edgeedge with one Na(5)O6 octahedra, and  an edgeedge with one Na(6)O6 octahedra. In the second Bi site, Bi(2) is bonded to one O(10), one O(2), one O(24), one O(3), one O(30), and one O(31) atom to form BiO6 octahedra that share  an edgeedge with one Na(1)O6 octahedra,  an edgeedge with one Na(5)O6 octahedra, and  an edgeedge with one Na(8)O6 octahedra. In the third Bi site, Bi(3) is bonded to one O(13), one O(16), one O(17), one O(19), one O(25), and one O(8) atom to form BiO6 octahedra that share  an edgeedge with one Na(3)O6 octahedra,  an edgeedge with one Na(4)O6 octahedra,  an edgeedge with one Na(6)O6 octahedra, and  an edgeedge with one Na(7)O6 octahedra. In the fourth Bi site, Bi(4) is bonded to one O(1), one O(14), one O(15), one O(18), one O(20), and one O(32) atom to form BiO6 octahedra that share  an edgeedge with one Na(1)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Na(3)O6 octahedra,  an edgeedge with one Na(7)O6 octahedra, and  an edgeedge with one Na(8)O6 octahedra. There are two inequivalent S sites. In the first S site, S(1) is bonded to one O(11), one O(12), one O(6), and one O(7) atom to form SO4 tetrahedra that share  an edgeedge with one Na(4)O6 octahedra,  an edgeedge with one Na(7)O6 octahedra, and  an edgeedge with one Na(8)O6 octahedra. In the second S site, S(2) is bonded to one O(21), one O(22), one O(26), and one O(27) atom to form SO4 tetrahedra that share  an edgeedge with one Na(1)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Na(3)O6 octahedra,  an edgeedge with one Na(5)O6 octahedra, and  an edgeedge with one Na(6)O6 octahedra. There are thirty-two inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Na(2), one Na(7), one C(1), and one Bi(4) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Na(1), one C(2), and one Bi(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Na(1), one C(1), and one Bi(2) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Na(2), one Na(4), one C(2), and one Bi(1) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Na(4), one Na(5), one C(1), and one Bi(1) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Na(7), one Na(8), and one S(1) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one Na(4), one Na(7), and one S(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one Na(3), one C(2), and one Bi(3) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Na(5), one C(3), and one Bi(1) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Na(5), one C(4), and one Bi(2) atom. In the eleventh O site, O(11) is bonded in an L-shaped geometry to one Na(8) and one S(1) atom. In the twelfth O site, O(12) is bonded in an L-shaped geometry to one Na(4) and one S(1) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one Na(3), one Na(4), one C(6), and one Bi(3) atom. In the fourteenth O site, O(14) is bonded in a distorted rectangular see-saw-like geometry to one Na(3), one Na(8), one C(5), and one Bi(4) atom. In the fifteenth O site, O(15) is bonded in a 4-coordinate geometry to one Na(2), one Na(8), one C(4), and one Bi(4) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one Na(4), one C(3), and one Bi(3) atom. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Na(6), one C(5), and one Bi(3) atom. In the eighteenth O site, O(18) is bonded in a 3-coordinate geometry to one Na(1), one C(6), and one Bi(4) atom. In the nineteenth O site, O(19) is bonded in a distorted rectangular see-saw-like geometry to one Na(6), one Na(7), one C(4), and one Bi(3) atom. In the twentieth O site, O(20) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(7), one C(3), and one Bi(4) atom. In the twenty-first O site, O(21) is bonded in a 3-coordinate geometry to one Na(5), one Na(6), and one S(2) atom. In the twenty-second O site, O(22) is bonded to one Na(1), one Na(2), one Na(5), and one S(2) atom to form distorted edge-sharing ONa3S trigonal pyramids. In the twenty-third O site, O(23) is bonded in a 3-coordinate geometry to one Na(2), one C(5), and one Bi(1) atom. In the twenty-fourth O site, O(24) is bonded in a distorted bent 120 degrees geometry to one C(6) and one Bi(2) atom. In the twenty-fifth O site, O(25) is bonded in a 3-coordinate geometry to one Na(7), one C(7), and one Bi(3) atom. In the twenty-sixth O site, O(26) is bonded in a distorted T-shaped geometry to one Na(1), one Na(3), and one S(2) atom. In the twenty-seventh O site, O(27) is bonded to one Na(2), one Na(3), one Na(6), and one S(2) atom to form edge-sharing ONa3S trigonal pyramids. In the twenty-eighth O site, O(28) is bonded in a 3-coordinate geometry to one Na(6), one C(8), and one Bi(1) atom. In the twenty-ninth O site, O(29) is bonded in a 3-coordinate geometry to one Na(6), one C(7), and one Bi(1) atom. In the thirtieth O site, O(30) is bonded in a 3-coordinate geometry to one Na(8), one C(8), and one Bi(2) atom. In the thirty-first O site, O(31) is bonded in a distorted single-bond geometry to one Na(5), one Na(8), one C(7), and one Bi(2) atom. In the thirty-second O site, O(32) is bonded in a 3-coordinate geometry to one Na(3), one C(8), and one Bi(4) atom.
Na4C4Bi2SO16 crystallizes in the triclinic P1 space group. There are eight inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(18), one O(2), one O(20), one O(22), one O(26), and one O(3) atom to form distorted NaO6 octahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Na(3)O6 octahedra,  a cornercorner with one Na(5)O6 octahedra,  a cornercorner with one Na(7)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra,  an edgeedge with one Bi(4)O6 octahedra, and  an edgeedge with one S(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 59-83°. The Na(1)-O(18) bond length is 2.47 Å. The Na(1)-O(2) bond length is 2.50 Å. The Na(1)-O(20) bond length is 2.65 Å. The Na(1)-O(22) bond length is 2.36 Å. The Na(1)-O(26) bond length is 2.37 Å. The Na(1)-O(3) bond length is 2.54 Å. In the second Na site, Na(2) is bonded to one O(1), one O(15), one O(22), one O(23), one O(27), and one O(4) atom to form distorted NaO6 octahedra that share  a cornercorner with one Na(1)O6 octahedra,  a cornercorner with one Na(3)O6 octahedra,  a cornercorner with one Na(4)O6 octahedra,  a cornercorner with one Na(5)O6 octahedra,  a cornercorner with one Na(6)O6 octahedra,  a cornercorner with one Na(7)O6 octahedra,  a cornercorner with one Na(8)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(4)O6 octahedra, and  an edgeedge with one S(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 56-83°. The Na(2)-O(1) bond length is 2.63 Å. The Na(2)-O(15) bond length is 2.45 Å. The Na(2)-O(22) bond length is 2.36 Å. The Na(2)-O(23) bond length is 2.50 Å. The Na(2)-O(27) bond length is 2.47 Å. The Na(2)-O(4) bond length is 2.46 Å. In the third Na site, Na(3) is bonded to one O(13), one O(14), one O(26), one O(27), one O(32), and one O(8) atom to form distorted NaO6 octahedra that share  a cornercorner with one Na(1)O6 octahedra,  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Na(4)O6 octahedra,  a cornercorner with one Na(6)O6 octahedra,  a cornercorner with one Na(8)O6 octahedra,  an edgeedge with one Bi(3)O6 octahedra,  an edgeedge with one Bi(4)O6 octahedra, and  an edgeedge with one S(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 59-84°. The Na(3)-O(13) bond length is 2.49 Å. The Na(3)-O(14) bond length is 2.55 Å. The Na(3)-O(26) bond length is 2.36 Å. The Na(3)-O(27) bond length is 2.44 Å. The Na(3)-O(32) bond length is 2.42 Å. The Na(3)-O(8) bond length is 2.46 Å. In the fourth Na site, Na(4) is bonded to one O(12), one O(13), one O(16), one O(4), one O(5), and one O(7) atom to form distorted NaO6 octahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Na(3)O6 octahedra,  a cornercorner with one Na(5)O6 octahedra,  a cornercorner with one Na(7)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(3)O6 octahedra, and  an edgeedge with one S(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 55-85°. The Na(4)-O(12) bond length is 2.26 Å. The Na(4)-O(13) bond length is 2.59 Å. The Na(4)-O(16) bond length is 2.53 Å. The Na(4)-O(4) bond length is 2.59 Å. The Na(4)-O(5) bond length is 2.64 Å. The Na(4)-O(7) bond length is 2.35 Å. In the fifth Na site, Na(5) is bonded to one O(10), one O(21), one O(22), one O(31), one O(5), and one O(9) atom to form distorted NaO6 octahedra that share  a cornercorner with one Na(1)O6 octahedra,  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Na(4)O6 octahedra,  a cornercorner with one Na(6)O6 octahedra,  a cornercorner with one Na(8)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra, and  an edgeedge with one S(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 58-85°. The Na(5)-O(10) bond length is 2.48 Å. The Na(5)-O(21) bond length is 2.35 Å. The Na(5)-O(22) bond length is 2.45 Å. The Na(5)-O(31) bond length is 2.54 Å. The Na(5)-O(5) bond length is 2.59 Å. The Na(5)-O(9) bond length is 2.46 Å. In the sixth Na site, Na(6) is bonded to one O(17), one O(19), one O(21), one O(27), one O(28), and one O(29) atom to form distorted NaO6 octahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Na(3)O6 octahedra,  a cornercorner with one Na(5)O6 octahedra,  a cornercorner with one Na(7)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(3)O6 octahedra, and  an edgeedge with one S(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 56-81°. The Na(6)-O(17) bond length is 2.49 Å. The Na(6)-O(19) bond length is 2.66 Å. The Na(6)-O(21) bond length is 2.31 Å. The Na(6)-O(27) bond length is 2.46 Å. The Na(6)-O(28) bond length is 2.49 Å. The Na(6)-O(29) bond length is 2.53 Å. In the seventh Na site, Na(7) is bonded to one O(1), one O(19), one O(20), one O(25), one O(6), and one O(7) atom to form distorted NaO6 octahedra that share  a cornercorner with one Na(1)O6 octahedra,  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Na(4)O6 octahedra,  a cornercorner with one Na(6)O6 octahedra,  a cornercorner with one Na(8)O6 octahedra,  an edgeedge with one Bi(3)O6 octahedra,  an edgeedge with one Bi(4)O6 octahedra, and  an edgeedge with one S(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 55-83°. The Na(7)-O(1) bond length is 2.56 Å. The Na(7)-O(19) bond length is 2.62 Å. The Na(7)-O(20) bond length is 2.57 Å. The Na(7)-O(25) bond length is 2.44 Å. The Na(7)-O(6) bond length is 2.28 Å. The Na(7)-O(7) bond length is 2.34 Å. In the eighth Na site, Na(8) is bonded to one O(11), one O(14), one O(15), one O(30), one O(31), and one O(6) atom to form distorted NaO6 octahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Na(3)O6 octahedra,  a cornercorner with one Na(5)O6 octahedra,  a cornercorner with one Na(7)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra,  an edgeedge with one Bi(4)O6 octahedra, and  an edgeedge with one S(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 62-84°. The Na(8)-O(11) bond length is 2.30 Å. The Na(8)-O(14) bond length is 2.62 Å. The Na(8)-O(15) bond length is 2.66 Å. The Na(8)-O(30) bond length is 2.46 Å. The Na(8)-O(31) bond length is 2.62 Å. The Na(8)-O(6) bond length is 2.28 Å. There are eight inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(1), one O(3), and one O(5) atom. The C(1)-O(1) bond length is 1.31 Å. The C(1)-O(3) bond length is 1.29 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(2), one O(4), and one O(8) atom. The C(2)-O(2) bond length is 1.30 Å. The C(2)-O(4) bond length is 1.31 Å. The C(2)-O(8) bond length is 1.30 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one O(16), one O(20), and one O(9) atom. The C(3)-O(16) bond length is 1.30 Å. The C(3)-O(20) bond length is 1.31 Å. The C(3)-O(9) bond length is 1.30 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one O(10), one O(15), and one O(19) atom. The C(4)-O(10) bond length is 1.29 Å. The C(4)-O(15) bond length is 1.31 Å. The C(4)-O(19) bond length is 1.31 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one O(14), one O(17), and one O(23) atom. The C(5)-O(14) bond length is 1.31 Å. The C(5)-O(17) bond length is 1.29 Å. The C(5)-O(23) bond length is 1.30 Å. In the sixth C site, C(6) is bonded in a trigonal planar geometry to one O(13), one O(18), and one O(24) atom. The C(6)-O(13) bond length is 1.31 Å. The C(6)-O(18) bond length is 1.30 Å. The C(6)-O(24) bond length is 1.29 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one O(25), one O(29), and one O(31) atom. The C(7)-O(25) bond length is 1.30 Å. The C(7)-O(29) bond length is 1.30 Å. The C(7)-O(31) bond length is 1.31 Å. In the eighth C site, C(8) is bonded in a trigonal planar geometry to one O(28), one O(30), and one O(32) atom. The C(8)-O(28) bond length is 1.30 Å. The C(8)-O(30) bond length is 1.30 Å. The C(8)-O(32) bond length is 1.31 Å. There are four inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(23), one O(28), one O(29), one O(4), one O(5), and one O(9) atom to form BiO6 octahedra that share  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Na(4)O6 octahedra,  an edgeedge with one Na(5)O6 octahedra, and  an edgeedge with one Na(6)O6 octahedra. The Bi(1)-O(23) bond length is 2.38 Å. The Bi(1)-O(28) bond length is 2.38 Å. The Bi(1)-O(29) bond length is 2.33 Å. The Bi(1)-O(4) bond length is 2.44 Å. The Bi(1)-O(5) bond length is 2.39 Å. The Bi(1)-O(9) bond length is 2.43 Å. In the second Bi site, Bi(2) is bonded to one O(10), one O(2), one O(24), one O(3), one O(30), and one O(31) atom to form BiO6 octahedra that share  an edgeedge with one Na(1)O6 octahedra,  an edgeedge with one Na(5)O6 octahedra, and  an edgeedge with one Na(8)O6 octahedra. The Bi(2)-O(10) bond length is 2.46 Å. The Bi(2)-O(2) bond length is 2.38 Å. The Bi(2)-O(24) bond length is 2.32 Å. The Bi(2)-O(3) bond length is 2.41 Å. The Bi(2)-O(30) bond length is 2.36 Å. The Bi(2)-O(31) bond length is 2.42 Å. In the third Bi site, Bi(3) is bonded to one O(13), one O(16), one O(17), one O(19), one O(25), and one O(8) atom to form BiO6 octahedra that share  an edgeedge with one Na(3)O6 octahedra,  an edgeedge with one Na(4)O6 octahedra,  an edgeedge with one Na(6)O6 octahedra, and  an edgeedge with one Na(7)O6 octahedra. The Bi(3)-O(13) bond length is 2.41 Å. The Bi(3)-O(16) bond length is 2.34 Å. The Bi(3)-O(17) bond length is 2.40 Å. The Bi(3)-O(19) bond length is 2.42 Å. The Bi(3)-O(25) bond length is 2.41 Å. The Bi(3)-O(8) bond length is 2.36 Å. In the fourth Bi site, Bi(4) is bonded to one O(1), one O(14), one O(15), one O(18), one O(20), and one O(32) atom to form BiO6 octahedra that share  an edgeedge with one Na(1)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Na(3)O6 octahedra,  an edgeedge with one Na(7)O6 octahedra, and  an edgeedge with one Na(8)O6 octahedra. The Bi(4)-O(1) bond length is 2.45 Å. The Bi(4)-O(14) bond length is 2.38 Å. The Bi(4)-O(15) bond length is 2.43 Å. The Bi(4)-O(18) bond length is 2.33 Å. The Bi(4)-O(20) bond length is 2.43 Å. The Bi(4)-O(32) bond length is 2.36 Å. There are two inequivalent S sites. In the first S site, S(1) is bonded to one O(11), one O(12), one O(6), and one O(7) atom to form SO4 tetrahedra that share  an edgeedge with one Na(4)O6 octahedra,  an edgeedge with one Na(7)O6 octahedra, and  an edgeedge with one Na(8)O6 octahedra. The S(1)-O(11) bond length is 1.49 Å. The S(1)-O(12) bond length is 1.49 Å. The S(1)-O(6) bond length is 1.52 Å. The S(1)-O(7) bond length is 1.52 Å. In the second S site, S(2) is bonded to one O(21), one O(22), one O(26), and one O(27) atom to form SO4 tetrahedra that share  an edgeedge with one Na(1)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Na(3)O6 octahedra,  an edgeedge with one Na(5)O6 octahedra, and  an edgeedge with one Na(6)O6 octahedra. The S(2)-O(21) bond length is 1.49 Å. The S(2)-O(22) bond length is 1.51 Å. The S(2)-O(26) bond length is 1.49 Å. The S(2)-O(27) bond length is 1.51 Å. There are thirty-two inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Na(2), one Na(7), one C(1), and one Bi(4) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Na(1), one C(2), and one Bi(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Na(1), one C(1), and one Bi(2) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Na(2), one Na(4), one C(2), and one Bi(1) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Na(4), one Na(5), one C(1), and one Bi(1) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Na(7), one Na(8), and one S(1) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one Na(4), one Na(7), and one S(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one Na(3), one C(2), and one Bi(3) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Na(5), one C(3), and one Bi(1) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Na(5), one C(4), and one Bi(2) atom. In the eleventh O site, O(11) is bonded in an L-shaped geometry to one Na(8) and one S(1) atom. In the twelfth O site, O(12) is bonded in an L-shaped geometry to one Na(4) and one S(1) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one Na(3), one Na(4), one C(6), and one Bi(3) atom. In the fourteenth O site, O(14) is bonded in a distorted rectangular see-saw-like geometry to one Na(3), one Na(8), one C(5), and one Bi(4) atom. In the fifteenth O site, O(15) is bonded in a 4-coordinate geometry to one Na(2), one Na(8), one C(4), and one Bi(4) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one Na(4), one C(3), and one Bi(3) atom. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Na(6), one C(5), and one Bi(3) atom. In the eighteenth O site, O(18) is bonded in a 3-coordinate geometry to one Na(1), one C(6), and one Bi(4) atom. In the nineteenth O site, O(19) is bonded in a distorted rectangular see-saw-like geometry to one Na(6), one Na(7), one C(4), and one Bi(3) atom. In the twentieth O site, O(20) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(7), one C(3), and one Bi(4) atom. In the twenty-first O site, O(21) is bonded in a 3-coordinate geometry to one Na(5), one Na(6), and one S(2) atom. In the twenty-second O site, O(22) is bonded to one Na(1), one Na(2), one Na(5), and one S(2) atom to form distorted edge-sharing ONa3S trigonal pyramids. In the twenty-third O site, O(23) is bonded in a 3-coordinate geometry to one Na(2), one C(5), and one Bi(1) atom. In the twenty-fourth O site, O(24) is bonded in a distorted bent 120 degrees geometry to one C(6) and one Bi(2) atom. In the twenty-fifth O site, O(25) is bonded in a 3-coordinate geometry to one Na(7), one C(7), and one Bi(3) atom. In the twenty-sixth O site, O(26) is bonded in a distorted T-shaped geometry to one Na(1), one Na(3), and one S(2) atom. In the twenty-seventh O site, O(27) is bonded to one Na(2), one Na(3), one Na(6), and one S(2) atom to form edge-sharing ONa3S trigonal pyramids. In the twenty-eighth O site, O(28) is bonded in a 3-coordinate geometry to one Na(6), one C(8), and one Bi(1) atom. In the twenty-ninth O site, O(29) is bonded in a 3-coordinate geometry to one Na(6), one C(7), and one Bi(1) atom. In the thirtieth O site, O(30) is bonded in a 3-coordinate geometry to one Na(8), one C(8), and one Bi(2) atom. In the thirty-first O site, O(31) is bonded in a distorted single-bond geometry to one Na(5), one Na(8), one C(7), and one Bi(2) atom. In the thirty-second O site, O(32) is bonded in a 3-coordinate geometry to one Na(3), one C(8), and one Bi(4) atom.