The material structure described by Na8Bi5O14 crystallizes in the triclinic P-1 space group. There are nine inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(2), one O(4), one O(5), and two equivalent O(3) atoms to form distorted NaO6 octahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Na(6)O6 octahedra,  a cornercorner with one Na(8)O6 octahedra,  a cornercorner with one Bi(2)O6 octahedra,  an edgeedge with one Na(1)O6 octahedra,  an edgeedge with one Na(6)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra, edges with two equivalent Na(4)O6 octahedra, edges with two equivalent Na(5)O6 octahedra, and edges with two equivalent Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 7-19°. In the second Na site, Na(2) is bonded to two equivalent O(10), two equivalent O(2), and two equivalent O(6) atoms to form distorted NaO6 octahedra that share corners with two equivalent Na(1)O6 octahedra, corners with two equivalent Na(7)O6 octahedra, edges with two equivalent Na(4)O6 octahedra, edges with two equivalent Na(5)O6 octahedra, edges with two equivalent Bi(1)O6 octahedra, edges with two equivalent Bi(2)O6 octahedra, and edges with two equivalent Bi(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 19-20°. In the third Na site, Na(3) is bonded in a 5-coordinate geometry to one O(1), one O(4), one O(6), one O(7), and one O(9) atom. In the fourth Na site, Na(4) is bonded to one O(1), one O(10), one O(11), one O(2), one O(3), and one O(9) atom to form NaO6 octahedra that share  a cornercorner with one Bi(1)O6 octahedra, corners with two equivalent Na(8)O6 octahedra, corners with two equivalent Bi(2)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Na(5)O6 octahedra,  an edgeedge with one Na(6)O6 octahedra,  an edgeedge with one Na(7)O6 octahedra,  an edgeedge with one Na(9)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(4)O6 octahedra, and edges with two equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 8-21°. In the fifth Na site, Na(5) is bonded to one O(11), one O(2), one O(4), one O(6), and two equivalent O(5) atoms to form NaO6 octahedra that share  a cornercorner with one Na(6)O6 octahedra,  a cornercorner with one Na(9)O6 octahedra, corners with two equivalent Bi(1)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Na(4)O6 octahedra,  an edgeedge with one Na(5)O6 octahedra,  an edgeedge with one Na(6)O6 octahedra,  an edgeedge with one Na(8)O6 octahedra,  an edgeedge with one Bi(4)O6 octahedra, edges with two equivalent Na(1)O6 octahedra, and edges with two equivalent Bi(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 8-17°. In the sixth Na site, Na(6) is bonded to one O(11), one O(13), one O(14), one O(3), one O(5), 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(5)O6 octahedra,  a cornercorner with one Bi(5)O6 octahedra, corners with two equivalent Bi(4)O6 octahedra,  an edgeedge with one Na(1)O6 octahedra,  an edgeedge with one Na(4)O6 octahedra,  an edgeedge with one Na(5)O6 octahedra,  an edgeedge with one Na(8)O6 octahedra,  an edgeedge with one Na(9)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra,  an edgeedge with one Bi(5)O6 octahedra, and edges with two equivalent Na(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-16°. In the seventh Na site, Na(7) is bonded to one O(10), one O(13), one O(7), one O(9), and two equivalent O(14) atoms to form NaO6 octahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Na(8)O6 octahedra,  a cornercorner with one Bi(1)O6 octahedra,  a cornercorner with one Bi(2)O6 octahedra,  an edgeedge with one Na(4)O6 octahedra,  an edgeedge with one Na(7)O6 octahedra,  an edgeedge with one Na(8)O6 octahedra,  an edgeedge with one Na(9)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra,  an edgeedge with one Bi(4)O6 octahedra, edges with two equivalent Na(6)O6 octahedra, and edges with two equivalent Bi(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 8-20°. In the eighth Na site, Na(8) is bonded to one O(11), one O(14), one O(4), one O(9), and two equivalent O(12) atoms to form NaO6 octahedra that share  a cornercorner with one Na(1)O6 octahedra,  a cornercorner with one Na(7)O6 octahedra,  a cornercorner with one Bi(4)O6 octahedra,  a cornercorner with one Bi(5)O6 octahedra, corners with two equivalent Na(4)O6 octahedra,  an edgeedge with one Na(5)O6 octahedra,  an edgeedge with one Na(6)O6 octahedra,  an edgeedge with one Na(7)O6 octahedra,  an edgeedge with one Na(8)O6 octahedra,  an edgeedge with one Na(9)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra,  an edgeedge with one Bi(4)O6 octahedra, and  an edgeedge with one Bi(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 8-16°. In the ninth Na site, Na(9) is bonded to two equivalent O(11), two equivalent O(13), and two equivalent O(9) atoms to form NaO6 octahedra that share corners with two equivalent Na(5)O6 octahedra, corners with two equivalent Bi(5)O6 octahedra, edges with two equivalent Na(4)O6 octahedra, edges with two equivalent Na(6)O6 octahedra, edges with two equivalent Na(7)O6 octahedra, edges with two equivalent Na(8)O6 octahedra, and edges with two equivalent Bi(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 8-16°. There are five inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(1), one O(2), one O(3), one O(6), one O(7), and one O(8) atom to form BiO6 octahedra that share  a cornercorner with one Na(4)O6 octahedra,  a cornercorner with one Na(7)O6 octahedra,  a cornercorner with one Bi(5)O6 octahedra, corners with two equivalent Na(5)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Na(4)O6 octahedra,  an edgeedge with one Na(6)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra,  an edgeedge with one Bi(4)O6 octahedra,  an edgeedge with one Bi(5)O6 octahedra, and edges with two equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 8-18°. In the second Bi site, Bi(2) is bonded to one O(10), one O(14), one O(2), one O(4), one O(5), and one O(8) atom to form distorted BiO6 octahedra that share  a cornercorner with one Na(1)O6 octahedra,  a cornercorner with one Na(7)O6 octahedra,  a cornercorner with one Bi(5)O6 octahedra, corners with two equivalent Na(4)O6 octahedra,  an edgeedge with one Na(1)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Na(6)O6 octahedra,  an edgeedge with one Na(7)O6 octahedra,  an edgeedge with one Na(8)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(4)O6 octahedra,  an edgeedge with one Bi(5)O6 octahedra, and edges with two equivalent Na(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 7-21°. In the third Bi site, Bi(3) is bonded in a 5-coordinate geometry to one O(12), one O(13), one O(3), one O(4), and one O(9) atom. In the fourth Bi site, Bi(4) is bonded to one O(10), one O(11), one O(12), one O(13), one O(6), and one O(8) atom to form BiO6 octahedra that share  a cornercorner with one Na(8)O6 octahedra, corners with two equivalent Na(6)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Na(4)O6 octahedra,  an edgeedge with one Na(5)O6 octahedra,  an edgeedge with one Na(7)O6 octahedra,  an edgeedge with one Na(8)O6 octahedra,  an edgeedge with one Na(9)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra, and edges with two equivalent Bi(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-8°. In the fifth Bi site, Bi(5) is bonded to one O(12), one O(13), one O(14), one O(7), and two equivalent O(8) atoms to form distorted BiO6 octahedra that share  a cornercorner with one Na(6)O6 octahedra,  a cornercorner with one Na(8)O6 octahedra,  a cornercorner with one Na(9)O6 octahedra,  a cornercorner with one Bi(1)O6 octahedra,  a cornercorner with one Bi(2)O6 octahedra,  an edgeedge with one Na(6)O6 octahedra,  an edgeedge with one Na(8)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra,  an edgeedge with one Bi(5)O6 octahedra, edges with two equivalent Na(7)O6 octahedra, and edges with two equivalent Bi(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 5-16°. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Na(1), one Na(3), one Na(4), and one Bi(1) atom. In the second O site, O(2) is bonded to one Na(1), one Na(2), one Na(4), one Na(5), one Bi(1), and one Bi(2) atom to form distorted ONa4Bi2 octahedra that share  a cornercorner with one O(14)Na4Bi2 octahedra,  a cornercorner with one O(2)Na4Bi2 octahedra,  a cornercorner with one O(4)Na4Bi2 octahedra,  a cornercorner with one O(9)Na5Bi octahedra,  a cornercorner with one O(7)Na3Bi2 trigonal bipyramid,  an edgeedge with one O(4)Na4Bi2 octahedra,  an edgeedge with one O(11)Na5Bi octahedra, edges with two equivalent O(3)Na4Bi2 octahedra, edges with two equivalent O(10)Na3Bi2 square pyramids, edges with two equivalent O(5)Na4Bi square pyramids, and edges with two equivalent O(6)Na3Bi2 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 0-19°. In the third O site, O(3) is bonded to one Na(4), one Na(6), two equivalent Na(1), one Bi(1), and one Bi(3) atom to form ONa4Bi2 octahedra that share  a cornercorner with one O(14)Na4Bi2 octahedra,  a cornercorner with one O(4)Na4Bi2 octahedra,  a cornercorner with one O(12)Na2Bi3 square pyramid,  a cornercorner with one O(10)Na3Bi2 square pyramid,  a cornercorner with one O(5)Na4Bi square pyramid,  a cornercorner with one O(6)Na3Bi2 trigonal bipyramid,  an edgeedge with one O(13)Na3Bi3 octahedra,  an edgeedge with one O(3)Na4Bi2 octahedra,  an edgeedge with one O(4)Na4Bi2 octahedra,  an edgeedge with one O(11)Na5Bi octahedra,  an edgeedge with one O(9)Na5Bi octahedra, edges with two equivalent O(2)Na4Bi2 octahedra,  an edgeedge with one O(5)Na4Bi square pyramid, and  an edgeedge with one O(7)Na3Bi2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 10-12°. In the fourth O site, O(4) is bonded to one Na(1), one Na(3), one Na(5), one Na(8), one Bi(2), and one Bi(3) atom to form distorted ONa4Bi2 octahedra that share  a cornercorner with one O(13)Na3Bi3 octahedra,  a cornercorner with one O(2)Na4Bi2 octahedra,  a cornercorner with one O(3)Na4Bi2 octahedra,  a cornercorner with one O(9)Na5Bi octahedra,  a cornercorner with one O(12)Na2Bi3 square pyramid,  a cornercorner with one O(10)Na3Bi2 square pyramid,  a cornercorner with one O(7)Na3Bi2 trigonal bipyramid,  an edgeedge with one O(14)Na4Bi2 octahedra,  an edgeedge with one O(2)Na4Bi2 octahedra,  an edgeedge with one O(3)Na4Bi2 octahedra,  an edgeedge with one O(11)Na5Bi octahedra,  an edgeedge with one O(9)Na5Bi octahedra,  an edgeedge with one O(12)Na2Bi3 square pyramid, edges with two equivalent O(5)Na4Bi square pyramids, and  an edgeedge with one O(6)Na3Bi2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 8-20°. In the fifth O site, O(5) is bonded to one Na(1), one Na(6), two equivalent Na(5), and one Bi(2) atom to form ONa4Bi square pyramids that share  a cornercorner with one O(13)Na3Bi3 octahedra,  a cornercorner with one O(3)Na4Bi2 octahedra,  a cornercorner with one O(11)Na5Bi octahedra,  a cornercorner with one O(10)Na3Bi2 square pyramid,  a cornercorner with one O(7)Na3Bi2 trigonal bipyramid, corners with two equivalent O(6)Na3Bi2 trigonal bipyramids,  an edgeedge with one O(14)Na4Bi2 octahedra,  an edgeedge with one O(3)Na4Bi2 octahedra,  an edgeedge with one O(11)Na5Bi octahedra, edges with two equivalent O(2)Na4Bi2 octahedra, edges with two equivalent O(4)Na4Bi2 octahedra, and  an edgeedge with one O(5)Na4Bi square pyramid. The corner-sharing octahedral tilt angles range from 5-11°. In the sixth O site, O(6) is bonded to one Na(2), one Na(3), one Na(5), one Bi(1), and one Bi(4) atom to form ONa3Bi2 trigonal bipyramids that share  a cornercorner with one O(13)Na3Bi3 octahedra,  a cornercorner with one O(3)Na4Bi2 octahedra,  a cornercorner with one O(9)Na5Bi octahedra,  a cornercorner with one O(12)Na2Bi3 square pyramid,  a cornercorner with one O(10)Na3Bi2 square pyramid, corners with two equivalent O(5)Na4Bi square pyramids,  a cornercorner with one O(6)Na3Bi2 trigonal bipyramid,  an edgeedge with one O(4)Na4Bi2 octahedra,  an edgeedge with one O(11)Na5Bi octahedra, edges with two equivalent O(2)Na4Bi2 octahedra,  an edgeedge with one O(10)Na3Bi2 square pyramid, and  an edgeedge with one O(7)Na3Bi2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 12-37°. In the seventh O site, O(7) is bonded to one Na(3), one Na(6), one Na(7), one Bi(1), and one Bi(5) atom to form ONa3Bi2 trigonal bipyramids that share  a cornercorner with one O(13)Na3Bi3 octahedra,  a cornercorner with one O(2)Na4Bi2 octahedra,  a cornercorner with one O(4)Na4Bi2 octahedra,  a cornercorner with one O(11)Na5Bi octahedra,  a cornercorner with one O(12)Na2Bi3 square pyramid,  a cornercorner with one O(10)Na3Bi2 square pyramid,  a cornercorner with one O(5)Na4Bi square pyramid,  an edgeedge with one O(13)Na3Bi3 octahedra,  an edgeedge with one O(3)Na4Bi2 octahedra,  an edgeedge with one O(9)Na5Bi octahedra, edges with two equivalent O(14)Na4Bi2 octahedra, and  an edgeedge with one O(6)Na3Bi2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 10-36°. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Bi(1), one Bi(2), one Bi(4), and two equivalent Bi(5) atoms. In the ninth O site, O(9) is bonded to one Na(3), one Na(4), one Na(7), one Na(8), one Na(9), and one Bi(3) atom to form ONa5Bi octahedra that share  a cornercorner with one O(14)Na4Bi2 octahedra,  a cornercorner with one O(2)Na4Bi2 octahedra,  a cornercorner with one O(4)Na4Bi2 octahedra,  a cornercorner with one O(9)Na5Bi octahedra,  a cornercorner with one O(12)Na2Bi3 square pyramid,  a cornercorner with one O(6)Na3Bi2 trigonal bipyramid,  an edgeedge with one O(14)Na4Bi2 octahedra,  an edgeedge with one O(3)Na4Bi2 octahedra,  an edgeedge with one O(4)Na4Bi2 octahedra, edges with two equivalent O(13)Na3Bi3 octahedra, edges with two equivalent O(11)Na5Bi octahedra,  an edgeedge with one O(12)Na2Bi3 square pyramid,  an edgeedge with one O(10)Na3Bi2 square pyramid, and  an edgeedge with one O(7)Na3Bi2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 0-12°. In the tenth O site, O(10) is bonded to one Na(2), one Na(4), one Na(7), one Bi(2), and one Bi(4) atom to form ONa3Bi2 square pyramids that share  a cornercorner with one O(14)Na4Bi2 octahedra,  a cornercorner with one O(3)Na4Bi2 octahedra,  a cornercorner with one O(4)Na4Bi2 octahedra,  a cornercorner with one O(12)Na2Bi3 square pyramid,  a cornercorner with one O(10)Na3Bi2 square pyramid,  a cornercorner with one O(5)Na4Bi square pyramid,  a cornercorner with one O(6)Na3Bi2 trigonal bipyramid,  a cornercorner with one O(7)Na3Bi2 trigonal bipyramid,  an edgeedge with one O(13)Na3Bi3 octahedra,  an edgeedge with one O(14)Na4Bi2 octahedra,  an edgeedge with one O(11)Na5Bi octahedra,  an edgeedge with one O(9)Na5Bi octahedra, edges with two equivalent O(2)Na4Bi2 octahedra, and  an edgeedge with one O(6)Na3Bi2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 10-20°. In the eleventh O site, O(11) is bonded to one Na(4), one Na(5), one Na(6), one Na(8), one Na(9), and one Bi(4) atom to form ONa5Bi octahedra that share  a cornercorner with one O(11)Na5Bi octahedra,  a cornercorner with one O(12)Na2Bi3 square pyramid,  a cornercorner with one O(5)Na4Bi square pyramid,  a cornercorner with one O(7)Na3Bi2 trigonal bipyramid,  an edgeedge with one O(14)Na4Bi2 octahedra,  an edgeedge with one O(2)Na4Bi2 octahedra,  an edgeedge with one O(3)Na4Bi2 octahedra,  an edgeedge with one O(4)Na4Bi2 octahedra, edges with two equivalent O(13)Na3Bi3 octahedra, edges with two equivalent O(9)Na5Bi octahedra,  an edgeedge with one O(12)Na2Bi3 square pyramid,  an edgeedge with one O(10)Na3Bi2 square pyramid,  an edgeedge with one O(5)Na4Bi square pyramid, and  an edgeedge with one O(6)Na3Bi2 trigonal bipyramid. The corner-sharing octahedra are not tilted. In the twelfth O site, O(12) is bonded to two equivalent Na(8), one Bi(3), one Bi(4), and one Bi(5) atom to form ONa2Bi3 square pyramids that share  a cornercorner with one O(13)Na3Bi3 octahedra,  a cornercorner with one O(14)Na4Bi2 octahedra,  a cornercorner with one O(3)Na4Bi2 octahedra,  a cornercorner with one O(4)Na4Bi2 octahedra,  a cornercorner with one O(11)Na5Bi octahedra,  a cornercorner with one O(9)Na5Bi octahedra,  a cornercorner with one O(10)Na3Bi2 square pyramid,  a cornercorner with one O(6)Na3Bi2 trigonal bipyramid,  a cornercorner with one O(7)Na3Bi2 trigonal bipyramid,  an edgeedge with one O(13)Na3Bi3 octahedra,  an edgeedge with one O(14)Na4Bi2 octahedra,  an edgeedge with one O(4)Na4Bi2 octahedra,  an edgeedge with one O(11)Na5Bi octahedra,  an edgeedge with one O(9)Na5Bi octahedra, and  an edgeedge with one O(12)Na2Bi3 square pyramid. The corner-sharing octahedral tilt angles range from 3-91°. In the thirteenth O site, O(13) is bonded to one Na(6), one Na(7), one Na(9), one Bi(3), one Bi(4), and one Bi(5) atom to form distorted ONa3Bi3 octahedra that share  a cornercorner with one O(13)Na3Bi3 octahedra,  a cornercorner with one O(4)Na4Bi2 octahedra,  a cornercorner with one O(12)Na2Bi3 square pyramid,  a cornercorner with one O(5)Na4Bi square pyramid,  a cornercorner with one O(6)Na3Bi2 trigonal bipyramid,  a cornercorner with one O(7)Na3Bi2 trigonal bipyramid,  an edgeedge with one O(3)Na4Bi2 octahedra, edges with two equivalent O(14)Na4Bi2 octahedra, edges with two equivalent O(11)Na5Bi octahedra, edges with two equivalent O(9)Na5Bi octahedra,  an edgeedge with one O(12)Na2Bi3 square pyramid,  an edgeedge with one O(10)Na3Bi2 square pyramid, and  an edgeedge with one O(7)Na3Bi2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 0-20°. In the fourteenth O site, O(14) is bonded to one Na(6), one Na(8), two equivalent Na(7), one Bi(2), and one Bi(5) atom to form ONa4Bi2 octahedra that share  a cornercorner with one O(2)Na4Bi2 octahedra,  a cornercorner with one O(3)Na4Bi2 octahedra,  a cornercorner with one O(9)Na5Bi octahedra,  a cornercorner with one O(12)Na2Bi3 square pyramid,  a cornercorner with one O(10)Na3Bi2 square pyramid,  an edgeedge with one O(14)Na4Bi2 octahedra,  an edgeedge with one O(4)Na4Bi2 octahedra,  an edgeedge with one O(11)Na5Bi octahedra,  an edgeedge with one O(9)Na5Bi octahedra, edges with two equivalent O(13)Na3Bi3 octahedra,  an edgeedge with one O(12)Na2Bi3 square pyramid,  an edgeedge with one O(10)Na3Bi2 square pyramid,  an edgeedge with one O(5)Na4Bi square pyramid, and edges with two equivalent O(7)Na3Bi2 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 2-19°. is represented by the CIF file [CIF]
data_Na8Bi5O14
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.162
_cell_length_b   9.210
_cell_length_c   11.557
_cell_angle_alpha   105.279
_cell_angle_beta   100.772
_cell_angle_gamma   112.366
_symmetry_Int_Tables_number   1
_cell_volume   823.644
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Na  Na0  1  0.450  0.679  0.017  1.0
  Na  Na1  1  0.000  0.000  0.000  1.0
  Na  Na2  1  0.194  0.674  0.189  1.0
  Na  Na3  1  0.307  0.377  0.171  1.0
  Na  Na4  1  0.381  0.015  0.106  1.0
  Na  Na5  1  0.698  0.410  0.280  1.0
  Na  Na6  1  0.112  0.467  0.376  1.0
  Na  Na7  1  0.570  0.147  0.430  1.0
  Na  Na8  1  0.500  0.500  0.500  1.0
  Na  Na9  1  0.430  0.853  0.570  1.0
  Na  Na10  1  0.888  0.533  0.624  1.0
  Na  Na11  1  0.302  0.590  0.720  1.0
  Na  Na12  1  0.619  0.985  0.894  1.0
  Na  Na13  1  0.693  0.623  0.829  1.0
  Na  Na14  1  0.806  0.326  0.811  1.0
  Na  Na15  1  0.550  0.321  0.983  1.0
  Bi  Bi16  1  0.849  0.711  0.140  1.0
  Bi  Bi17  1  0.773  0.081  0.202  1.0
  Bi  Bi18  1  0.603  0.768  0.342  1.0
  Bi  Bi19  1  0.190  0.111  0.319  1.0
  Bi  Bi20  1  0.037  0.810  0.468  1.0
  Bi  Bi21  1  0.963  0.190  0.532  1.0
  Bi  Bi22  1  0.810  0.889  0.681  1.0
  Bi  Bi23  1  0.397  0.232  0.658  1.0
  Bi  Bi24  1  0.227  0.919  0.798  1.0
  Bi  Bi25  1  0.151  0.289  0.860  1.0
  O  O26  1  0.798  0.526  0.975  1.0
  O  O27  1  0.747  0.847  0.046  1.0
  O  O28  1  0.616  0.578  0.168  1.0
  O  O29  1  0.537  0.914  0.231  1.0
  O  O30  1  0.654  0.179  0.098  1.0
  O  O31  1  0.107  0.884  0.153  1.0
  O  O32  1  0.964  0.622  0.279  1.0
  O  O33  1  0.929  0.941  0.321  1.0
  O  O34  1  0.368  0.627  0.352  1.0
  O  O35  1  0.055  0.204  0.211  1.0
  O  O36  1  0.418  0.247  0.300  1.0
  O  O37  1  0.710  0.995  0.557  1.0
  O  O38  1  0.780  0.692  0.508  1.0
  O  O39  1  0.841  0.288  0.406  1.0
  O  O40  1  0.159  0.712  0.594  1.0
  O  O41  1  0.220  0.308  0.492  1.0
  O  O42  1  0.290  0.005  0.443  1.0
  O  O43  1  0.582  0.753  0.700  1.0
  O  O44  1  0.945  0.796  0.789  1.0
  O  O45  1  0.632  0.373  0.648  1.0
  O  O46  1  0.071  0.059  0.679  1.0
  O  O47  1  0.036  0.378  0.721  1.0
  O  O48  1  0.893  0.116  0.847  1.0
  O  O49  1  0.346  0.821  0.902  1.0
  O  O50  1  0.463  0.086  0.769  1.0
  O  O51  1  0.384  0.422  0.832  1.0
  O  O52  1  0.253  0.153  0.954  1.0
  O  O53  1  0.202  0.474  0.025  1.0
[/CIF]
.
The material structure described by Na8Bi5O14 crystallizes in the triclinic P-1 space group. There are nine inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(2), one O(4), one O(5), and two equivalent O(3) atoms to form distorted NaO6 octahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Na(6)O6 octahedra,  a cornercorner with one Na(8)O6 octahedra,  a cornercorner with one Bi(2)O6 octahedra,  an edgeedge with one Na(1)O6 octahedra,  an edgeedge with one Na(6)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra, edges with two equivalent Na(4)O6 octahedra, edges with two equivalent Na(5)O6 octahedra, and edges with two equivalent Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 7-19°. In the second Na site, Na(2) is bonded to two equivalent O(10), two equivalent O(2), and two equivalent O(6) atoms to form distorted NaO6 octahedra that share corners with two equivalent Na(1)O6 octahedra, corners with two equivalent Na(7)O6 octahedra, edges with two equivalent Na(4)O6 octahedra, edges with two equivalent Na(5)O6 octahedra, edges with two equivalent Bi(1)O6 octahedra, edges with two equivalent Bi(2)O6 octahedra, and edges with two equivalent Bi(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 19-20°. In the third Na site, Na(3) is bonded in a 5-coordinate geometry to one O(1), one O(4), one O(6), one O(7), and one O(9) atom. In the fourth Na site, Na(4) is bonded to one O(1), one O(10), one O(11), one O(2), one O(3), and one O(9) atom to form NaO6 octahedra that share  a cornercorner with one Bi(1)O6 octahedra, corners with two equivalent Na(8)O6 octahedra, corners with two equivalent Bi(2)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Na(5)O6 octahedra,  an edgeedge with one Na(6)O6 octahedra,  an edgeedge with one Na(7)O6 octahedra,  an edgeedge with one Na(9)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(4)O6 octahedra, and edges with two equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 8-21°. In the fifth Na site, Na(5) is bonded to one O(11), one O(2), one O(4), one O(6), and two equivalent O(5) atoms to form NaO6 octahedra that share  a cornercorner with one Na(6)O6 octahedra,  a cornercorner with one Na(9)O6 octahedra, corners with two equivalent Bi(1)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Na(4)O6 octahedra,  an edgeedge with one Na(5)O6 octahedra,  an edgeedge with one Na(6)O6 octahedra,  an edgeedge with one Na(8)O6 octahedra,  an edgeedge with one Bi(4)O6 octahedra, edges with two equivalent Na(1)O6 octahedra, and edges with two equivalent Bi(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 8-17°. In the sixth Na site, Na(6) is bonded to one O(11), one O(13), one O(14), one O(3), one O(5), 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(5)O6 octahedra,  a cornercorner with one Bi(5)O6 octahedra, corners with two equivalent Bi(4)O6 octahedra,  an edgeedge with one Na(1)O6 octahedra,  an edgeedge with one Na(4)O6 octahedra,  an edgeedge with one Na(5)O6 octahedra,  an edgeedge with one Na(8)O6 octahedra,  an edgeedge with one Na(9)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra,  an edgeedge with one Bi(5)O6 octahedra, and edges with two equivalent Na(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-16°. In the seventh Na site, Na(7) is bonded to one O(10), one O(13), one O(7), one O(9), and two equivalent O(14) atoms to form NaO6 octahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Na(8)O6 octahedra,  a cornercorner with one Bi(1)O6 octahedra,  a cornercorner with one Bi(2)O6 octahedra,  an edgeedge with one Na(4)O6 octahedra,  an edgeedge with one Na(7)O6 octahedra,  an edgeedge with one Na(8)O6 octahedra,  an edgeedge with one Na(9)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra,  an edgeedge with one Bi(4)O6 octahedra, edges with two equivalent Na(6)O6 octahedra, and edges with two equivalent Bi(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 8-20°. In the eighth Na site, Na(8) is bonded to one O(11), one O(14), one O(4), one O(9), and two equivalent O(12) atoms to form NaO6 octahedra that share  a cornercorner with one Na(1)O6 octahedra,  a cornercorner with one Na(7)O6 octahedra,  a cornercorner with one Bi(4)O6 octahedra,  a cornercorner with one Bi(5)O6 octahedra, corners with two equivalent Na(4)O6 octahedra,  an edgeedge with one Na(5)O6 octahedra,  an edgeedge with one Na(6)O6 octahedra,  an edgeedge with one Na(7)O6 octahedra,  an edgeedge with one Na(8)O6 octahedra,  an edgeedge with one Na(9)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra,  an edgeedge with one Bi(4)O6 octahedra, and  an edgeedge with one Bi(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 8-16°. In the ninth Na site, Na(9) is bonded to two equivalent O(11), two equivalent O(13), and two equivalent O(9) atoms to form NaO6 octahedra that share corners with two equivalent Na(5)O6 octahedra, corners with two equivalent Bi(5)O6 octahedra, edges with two equivalent Na(4)O6 octahedra, edges with two equivalent Na(6)O6 octahedra, edges with two equivalent Na(7)O6 octahedra, edges with two equivalent Na(8)O6 octahedra, and edges with two equivalent Bi(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 8-16°. There are five inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(1), one O(2), one O(3), one O(6), one O(7), and one O(8) atom to form BiO6 octahedra that share  a cornercorner with one Na(4)O6 octahedra,  a cornercorner with one Na(7)O6 octahedra,  a cornercorner with one Bi(5)O6 octahedra, corners with two equivalent Na(5)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Na(4)O6 octahedra,  an edgeedge with one Na(6)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra,  an edgeedge with one Bi(4)O6 octahedra,  an edgeedge with one Bi(5)O6 octahedra, and edges with two equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 8-18°. In the second Bi site, Bi(2) is bonded to one O(10), one O(14), one O(2), one O(4), one O(5), and one O(8) atom to form distorted BiO6 octahedra that share  a cornercorner with one Na(1)O6 octahedra,  a cornercorner with one Na(7)O6 octahedra,  a cornercorner with one Bi(5)O6 octahedra, corners with two equivalent Na(4)O6 octahedra,  an edgeedge with one Na(1)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Na(6)O6 octahedra,  an edgeedge with one Na(7)O6 octahedra,  an edgeedge with one Na(8)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(4)O6 octahedra,  an edgeedge with one Bi(5)O6 octahedra, and edges with two equivalent Na(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 7-21°. In the third Bi site, Bi(3) is bonded in a 5-coordinate geometry to one O(12), one O(13), one O(3), one O(4), and one O(9) atom. In the fourth Bi site, Bi(4) is bonded to one O(10), one O(11), one O(12), one O(13), one O(6), and one O(8) atom to form BiO6 octahedra that share  a cornercorner with one Na(8)O6 octahedra, corners with two equivalent Na(6)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Na(4)O6 octahedra,  an edgeedge with one Na(5)O6 octahedra,  an edgeedge with one Na(7)O6 octahedra,  an edgeedge with one Na(8)O6 octahedra,  an edgeedge with one Na(9)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra, and edges with two equivalent Bi(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-8°. In the fifth Bi site, Bi(5) is bonded to one O(12), one O(13), one O(14), one O(7), and two equivalent O(8) atoms to form distorted BiO6 octahedra that share  a cornercorner with one Na(6)O6 octahedra,  a cornercorner with one Na(8)O6 octahedra,  a cornercorner with one Na(9)O6 octahedra,  a cornercorner with one Bi(1)O6 octahedra,  a cornercorner with one Bi(2)O6 octahedra,  an edgeedge with one Na(6)O6 octahedra,  an edgeedge with one Na(8)O6 octahedra,  an edgeedge with one Bi(1)O6 octahedra,  an edgeedge with one Bi(2)O6 octahedra,  an edgeedge with one Bi(5)O6 octahedra, edges with two equivalent Na(7)O6 octahedra, and edges with two equivalent Bi(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 5-16°. There are fourteen inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Na(1), one Na(3), one Na(4), and one Bi(1) atom. In the second O site, O(2) is bonded to one Na(1), one Na(2), one Na(4), one Na(5), one Bi(1), and one Bi(2) atom to form distorted ONa4Bi2 octahedra that share  a cornercorner with one O(14)Na4Bi2 octahedra,  a cornercorner with one O(2)Na4Bi2 octahedra,  a cornercorner with one O(4)Na4Bi2 octahedra,  a cornercorner with one O(9)Na5Bi octahedra,  a cornercorner with one O(7)Na3Bi2 trigonal bipyramid,  an edgeedge with one O(4)Na4Bi2 octahedra,  an edgeedge with one O(11)Na5Bi octahedra, edges with two equivalent O(3)Na4Bi2 octahedra, edges with two equivalent O(10)Na3Bi2 square pyramids, edges with two equivalent O(5)Na4Bi square pyramids, and edges with two equivalent O(6)Na3Bi2 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 0-19°. In the third O site, O(3) is bonded to one Na(4), one Na(6), two equivalent Na(1), one Bi(1), and one Bi(3) atom to form ONa4Bi2 octahedra that share  a cornercorner with one O(14)Na4Bi2 octahedra,  a cornercorner with one O(4)Na4Bi2 octahedra,  a cornercorner with one O(12)Na2Bi3 square pyramid,  a cornercorner with one O(10)Na3Bi2 square pyramid,  a cornercorner with one O(5)Na4Bi square pyramid,  a cornercorner with one O(6)Na3Bi2 trigonal bipyramid,  an edgeedge with one O(13)Na3Bi3 octahedra,  an edgeedge with one O(3)Na4Bi2 octahedra,  an edgeedge with one O(4)Na4Bi2 octahedra,  an edgeedge with one O(11)Na5Bi octahedra,  an edgeedge with one O(9)Na5Bi octahedra, edges with two equivalent O(2)Na4Bi2 octahedra,  an edgeedge with one O(5)Na4Bi square pyramid, and  an edgeedge with one O(7)Na3Bi2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 10-12°. In the fourth O site, O(4) is bonded to one Na(1), one Na(3), one Na(5), one Na(8), one Bi(2), and one Bi(3) atom to form distorted ONa4Bi2 octahedra that share  a cornercorner with one O(13)Na3Bi3 octahedra,  a cornercorner with one O(2)Na4Bi2 octahedra,  a cornercorner with one O(3)Na4Bi2 octahedra,  a cornercorner with one O(9)Na5Bi octahedra,  a cornercorner with one O(12)Na2Bi3 square pyramid,  a cornercorner with one O(10)Na3Bi2 square pyramid,  a cornercorner with one O(7)Na3Bi2 trigonal bipyramid,  an edgeedge with one O(14)Na4Bi2 octahedra,  an edgeedge with one O(2)Na4Bi2 octahedra,  an edgeedge with one O(3)Na4Bi2 octahedra,  an edgeedge with one O(11)Na5Bi octahedra,  an edgeedge with one O(9)Na5Bi octahedra,  an edgeedge with one O(12)Na2Bi3 square pyramid, edges with two equivalent O(5)Na4Bi square pyramids, and  an edgeedge with one O(6)Na3Bi2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 8-20°. In the fifth O site, O(5) is bonded to one Na(1), one Na(6), two equivalent Na(5), and one Bi(2) atom to form ONa4Bi square pyramids that share  a cornercorner with one O(13)Na3Bi3 octahedra,  a cornercorner with one O(3)Na4Bi2 octahedra,  a cornercorner with one O(11)Na5Bi octahedra,  a cornercorner with one O(10)Na3Bi2 square pyramid,  a cornercorner with one O(7)Na3Bi2 trigonal bipyramid, corners with two equivalent O(6)Na3Bi2 trigonal bipyramids,  an edgeedge with one O(14)Na4Bi2 octahedra,  an edgeedge with one O(3)Na4Bi2 octahedra,  an edgeedge with one O(11)Na5Bi octahedra, edges with two equivalent O(2)Na4Bi2 octahedra, edges with two equivalent O(4)Na4Bi2 octahedra, and  an edgeedge with one O(5)Na4Bi square pyramid. The corner-sharing octahedral tilt angles range from 5-11°. In the sixth O site, O(6) is bonded to one Na(2), one Na(3), one Na(5), one Bi(1), and one Bi(4) atom to form ONa3Bi2 trigonal bipyramids that share  a cornercorner with one O(13)Na3Bi3 octahedra,  a cornercorner with one O(3)Na4Bi2 octahedra,  a cornercorner with one O(9)Na5Bi octahedra,  a cornercorner with one O(12)Na2Bi3 square pyramid,  a cornercorner with one O(10)Na3Bi2 square pyramid, corners with two equivalent O(5)Na4Bi square pyramids,  a cornercorner with one O(6)Na3Bi2 trigonal bipyramid,  an edgeedge with one O(4)Na4Bi2 octahedra,  an edgeedge with one O(11)Na5Bi octahedra, edges with two equivalent O(2)Na4Bi2 octahedra,  an edgeedge with one O(10)Na3Bi2 square pyramid, and  an edgeedge with one O(7)Na3Bi2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 12-37°. In the seventh O site, O(7) is bonded to one Na(3), one Na(6), one Na(7), one Bi(1), and one Bi(5) atom to form ONa3Bi2 trigonal bipyramids that share  a cornercorner with one O(13)Na3Bi3 octahedra,  a cornercorner with one O(2)Na4Bi2 octahedra,  a cornercorner with one O(4)Na4Bi2 octahedra,  a cornercorner with one O(11)Na5Bi octahedra,  a cornercorner with one O(12)Na2Bi3 square pyramid,  a cornercorner with one O(10)Na3Bi2 square pyramid,  a cornercorner with one O(5)Na4Bi square pyramid,  an edgeedge with one O(13)Na3Bi3 octahedra,  an edgeedge with one O(3)Na4Bi2 octahedra,  an edgeedge with one O(9)Na5Bi octahedra, edges with two equivalent O(14)Na4Bi2 octahedra, and  an edgeedge with one O(6)Na3Bi2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 10-36°. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Bi(1), one Bi(2), one Bi(4), and two equivalent Bi(5) atoms. In the ninth O site, O(9) is bonded to one Na(3), one Na(4), one Na(7), one Na(8), one Na(9), and one Bi(3) atom to form ONa5Bi octahedra that share  a cornercorner with one O(14)Na4Bi2 octahedra,  a cornercorner with one O(2)Na4Bi2 octahedra,  a cornercorner with one O(4)Na4Bi2 octahedra,  a cornercorner with one O(9)Na5Bi octahedra,  a cornercorner with one O(12)Na2Bi3 square pyramid,  a cornercorner with one O(6)Na3Bi2 trigonal bipyramid,  an edgeedge with one O(14)Na4Bi2 octahedra,  an edgeedge with one O(3)Na4Bi2 octahedra,  an edgeedge with one O(4)Na4Bi2 octahedra, edges with two equivalent O(13)Na3Bi3 octahedra, edges with two equivalent O(11)Na5Bi octahedra,  an edgeedge with one O(12)Na2Bi3 square pyramid,  an edgeedge with one O(10)Na3Bi2 square pyramid, and  an edgeedge with one O(7)Na3Bi2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 0-12°. In the tenth O site, O(10) is bonded to one Na(2), one Na(4), one Na(7), one Bi(2), and one Bi(4) atom to form ONa3Bi2 square pyramids that share  a cornercorner with one O(14)Na4Bi2 octahedra,  a cornercorner with one O(3)Na4Bi2 octahedra,  a cornercorner with one O(4)Na4Bi2 octahedra,  a cornercorner with one O(12)Na2Bi3 square pyramid,  a cornercorner with one O(10)Na3Bi2 square pyramid,  a cornercorner with one O(5)Na4Bi square pyramid,  a cornercorner with one O(6)Na3Bi2 trigonal bipyramid,  a cornercorner with one O(7)Na3Bi2 trigonal bipyramid,  an edgeedge with one O(13)Na3Bi3 octahedra,  an edgeedge with one O(14)Na4Bi2 octahedra,  an edgeedge with one O(11)Na5Bi octahedra,  an edgeedge with one O(9)Na5Bi octahedra, edges with two equivalent O(2)Na4Bi2 octahedra, and  an edgeedge with one O(6)Na3Bi2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 10-20°. In the eleventh O site, O(11) is bonded to one Na(4), one Na(5), one Na(6), one Na(8), one Na(9), and one Bi(4) atom to form ONa5Bi octahedra that share  a cornercorner with one O(11)Na5Bi octahedra,  a cornercorner with one O(12)Na2Bi3 square pyramid,  a cornercorner with one O(5)Na4Bi square pyramid,  a cornercorner with one O(7)Na3Bi2 trigonal bipyramid,  an edgeedge with one O(14)Na4Bi2 octahedra,  an edgeedge with one O(2)Na4Bi2 octahedra,  an edgeedge with one O(3)Na4Bi2 octahedra,  an edgeedge with one O(4)Na4Bi2 octahedra, edges with two equivalent O(13)Na3Bi3 octahedra, edges with two equivalent O(9)Na5Bi octahedra,  an edgeedge with one O(12)Na2Bi3 square pyramid,  an edgeedge with one O(10)Na3Bi2 square pyramid,  an edgeedge with one O(5)Na4Bi square pyramid, and  an edgeedge with one O(6)Na3Bi2 trigonal bipyramid. The corner-sharing octahedra are not tilted. In the twelfth O site, O(12) is bonded to two equivalent Na(8), one Bi(3), one Bi(4), and one Bi(5) atom to form ONa2Bi3 square pyramids that share  a cornercorner with one O(13)Na3Bi3 octahedra,  a cornercorner with one O(14)Na4Bi2 octahedra,  a cornercorner with one O(3)Na4Bi2 octahedra,  a cornercorner with one O(4)Na4Bi2 octahedra,  a cornercorner with one O(11)Na5Bi octahedra,  a cornercorner with one O(9)Na5Bi octahedra,  a cornercorner with one O(10)Na3Bi2 square pyramid,  a cornercorner with one O(6)Na3Bi2 trigonal bipyramid,  a cornercorner with one O(7)Na3Bi2 trigonal bipyramid,  an edgeedge with one O(13)Na3Bi3 octahedra,  an edgeedge with one O(14)Na4Bi2 octahedra,  an edgeedge with one O(4)Na4Bi2 octahedra,  an edgeedge with one O(11)Na5Bi octahedra,  an edgeedge with one O(9)Na5Bi octahedra, and  an edgeedge with one O(12)Na2Bi3 square pyramid. The corner-sharing octahedral tilt angles range from 3-91°. In the thirteenth O site, O(13) is bonded to one Na(6), one Na(7), one Na(9), one Bi(3), one Bi(4), and one Bi(5) atom to form distorted ONa3Bi3 octahedra that share  a cornercorner with one O(13)Na3Bi3 octahedra,  a cornercorner with one O(4)Na4Bi2 octahedra,  a cornercorner with one O(12)Na2Bi3 square pyramid,  a cornercorner with one O(5)Na4Bi square pyramid,  a cornercorner with one O(6)Na3Bi2 trigonal bipyramid,  a cornercorner with one O(7)Na3Bi2 trigonal bipyramid,  an edgeedge with one O(3)Na4Bi2 octahedra, edges with two equivalent O(14)Na4Bi2 octahedra, edges with two equivalent O(11)Na5Bi octahedra, edges with two equivalent O(9)Na5Bi octahedra,  an edgeedge with one O(12)Na2Bi3 square pyramid,  an edgeedge with one O(10)Na3Bi2 square pyramid, and  an edgeedge with one O(7)Na3Bi2 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 0-20°. In the fourteenth O site, O(14) is bonded to one Na(6), one Na(8), two equivalent Na(7), one Bi(2), and one Bi(5) atom to form ONa4Bi2 octahedra that share  a cornercorner with one O(2)Na4Bi2 octahedra,  a cornercorner with one O(3)Na4Bi2 octahedra,  a cornercorner with one O(9)Na5Bi octahedra,  a cornercorner with one O(12)Na2Bi3 square pyramid,  a cornercorner with one O(10)Na3Bi2 square pyramid,  an edgeedge with one O(14)Na4Bi2 octahedra,  an edgeedge with one O(4)Na4Bi2 octahedra,  an edgeedge with one O(11)Na5Bi octahedra,  an edgeedge with one O(9)Na5Bi octahedra, edges with two equivalent O(13)Na3Bi3 octahedra,  an edgeedge with one O(12)Na2Bi3 square pyramid,  an edgeedge with one O(10)Na3Bi2 square pyramid,  an edgeedge with one O(5)Na4Bi square pyramid, and edges with two equivalent O(7)Na3Bi2 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 2-19°. is represented by the CIF file [CIF]
data_Na8Bi5O14
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.162
_cell_length_b   9.210
_cell_length_c   11.557
_cell_angle_alpha   105.279
_cell_angle_beta   100.772
_cell_angle_gamma   112.366
_symmetry_Int_Tables_number   1
_cell_volume   823.644
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Na  Na0  1  0.450  0.679  0.017  1.0
  Na  Na1  1  0.000  0.000  0.000  1.0
  Na  Na2  1  0.194  0.674  0.189  1.0
  Na  Na3  1  0.307  0.377  0.171  1.0
  Na  Na4  1  0.381  0.015  0.106  1.0
  Na  Na5  1  0.698  0.410  0.280  1.0
  Na  Na6  1  0.112  0.467  0.376  1.0
  Na  Na7  1  0.570  0.147  0.430  1.0
  Na  Na8  1  0.500  0.500  0.500  1.0
  Na  Na9  1  0.430  0.853  0.570  1.0
  Na  Na10  1  0.888  0.533  0.624  1.0
  Na  Na11  1  0.302  0.590  0.720  1.0
  Na  Na12  1  0.619  0.985  0.894  1.0
  Na  Na13  1  0.693  0.623  0.829  1.0
  Na  Na14  1  0.806  0.326  0.811  1.0
  Na  Na15  1  0.550  0.321  0.983  1.0
  Bi  Bi16  1  0.849  0.711  0.140  1.0
  Bi  Bi17  1  0.773  0.081  0.202  1.0
  Bi  Bi18  1  0.603  0.768  0.342  1.0
  Bi  Bi19  1  0.190  0.111  0.319  1.0
  Bi  Bi20  1  0.037  0.810  0.468  1.0
  Bi  Bi21  1  0.963  0.190  0.532  1.0
  Bi  Bi22  1  0.810  0.889  0.681  1.0
  Bi  Bi23  1  0.397  0.232  0.658  1.0
  Bi  Bi24  1  0.227  0.919  0.798  1.0
  Bi  Bi25  1  0.151  0.289  0.860  1.0
  O  O26  1  0.798  0.526  0.975  1.0
  O  O27  1  0.747  0.847  0.046  1.0
  O  O28  1  0.616  0.578  0.168  1.0
  O  O29  1  0.537  0.914  0.231  1.0
  O  O30  1  0.654  0.179  0.098  1.0
  O  O31  1  0.107  0.884  0.153  1.0
  O  O32  1  0.964  0.622  0.279  1.0
  O  O33  1  0.929  0.941  0.321  1.0
  O  O34  1  0.368  0.627  0.352  1.0
  O  O35  1  0.055  0.204  0.211  1.0
  O  O36  1  0.418  0.247  0.300  1.0
  O  O37  1  0.710  0.995  0.557  1.0
  O  O38  1  0.780  0.692  0.508  1.0
  O  O39  1  0.841  0.288  0.406  1.0
  O  O40  1  0.159  0.712  0.594  1.0
  O  O41  1  0.220  0.308  0.492  1.0
  O  O42  1  0.290  0.005  0.443  1.0
  O  O43  1  0.582  0.753  0.700  1.0
  O  O44  1  0.945  0.796  0.789  1.0
  O  O45  1  0.632  0.373  0.648  1.0
  O  O46  1  0.071  0.059  0.679  1.0
  O  O47  1  0.036  0.378  0.721  1.0
  O  O48  1  0.893  0.116  0.847  1.0
  O  O49  1  0.346  0.821  0.902  1.0
  O  O50  1  0.463  0.086  0.769  1.0
  O  O51  1  0.384  0.422  0.832  1.0
  O  O52  1  0.253  0.153  0.954  1.0
  O  O53  1  0.202  0.474  0.025  1.0
[/CIF]
.