Na6CaTi3Si2(PO6)4 crystallizes in the triclinic P1 space group. There are six inequivalent Na sites. In the first Na site, Na(1) is bonded in a distorted hexagonal planar geometry to one O(1), one O(11), one O(21), one O(23), one O(3), and one O(9) atom. In the second Na site, Na(2) is bonded to one O(10), one O(12), one O(2), one O(22), one O(24), and one O(4) atom to form distorted NaO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra,  an edgeedge with one Na(5)O6 pentagonal pyramid,  a faceface with one Ca(1)O6 octahedra, and  a faceface with one Ti(2)O6 octahedra. In the third Na site, Na(3) is bonded in a 4-coordinate geometry to one O(14), one O(19), one O(2), one O(21), and one O(22) atom. In the fourth Na site, Na(4) is bonded in a 8-coordinate geometry to one O(16), one O(17), one O(18), one O(20), one O(23), one O(24), one O(3), and one O(4) atom. In the fifth Na site, Na(5) is bonded to one O(11), one O(12), one O(14), one O(23), one O(4), and one O(5) atom to form distorted NaO6 pentagonal pyramids that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one P(4)O4 tetrahedra,  a faceface with one Ca(1)O6 octahedra, and  a faceface with one Ti(3)O6 octahedra. In the sixth Na site, Na(6) is bonded in a 8-coordinate geometry to one O(10), one O(16), one O(18), one O(2), one O(21), one O(6), one O(7), and one O(9) atom. Ca(1) is bonded to one O(12), one O(14), one O(17), one O(24), one O(4), and one O(6) atom to form distorted CaO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra,  a faceface with one Na(2)O6 octahedra, and  a faceface with one Na(5)O6 pentagonal pyramid. There are three inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(1), one O(15), one O(20), one O(21), one O(7), and one O(9) atom to form TiO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and  a cornercorner with one P(4)O4 tetrahedra. In the second Ti site, Ti(2) is bonded to one O(10), one O(16), one O(19), one O(2), one O(22), and one O(8) atom to form TiO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, and  a faceface with one Na(2)O6 octahedra. In the third Ti site, Ti(3) is bonded to one O(11), one O(13), one O(18), one O(23), one O(3), and one O(5) atom to form distorted TiO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, and  a faceface with one Na(5)O6 pentagonal pyramid. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(10), one O(14), and one O(18) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Ca(1)O6 octahedra,  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra, and  a cornercorner with one Na(5)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 22-56°. In the second Si site, Si(2) is bonded to one O(12), one O(16), one O(20), and one O(3) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Ca(1)O6 octahedra,  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra, and  a cornercorner with one Na(5)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 19-47°. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(21), one O(22), one O(5), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Ca(1)O6 octahedra,  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra, and  a cornercorner with one Na(5)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 31-57°. In the second P site, P(2) is bonded to one O(23), one O(24), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Ca(1)O6 octahedra,  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra, and  a cornercorner with one Na(5)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 18-47°. In the third P site, P(3) is bonded to one O(13), one O(17), one O(2), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Ca(1)O6 octahedra,  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(2)O6 octahedra, and  a cornercorner with one Ti(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 9-49°. In the fourth P site, P(4) is bonded to one O(11), one O(15), one O(19), and one O(4) atom to form PO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Ca(1)O6 octahedra,  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra, and  an edgeedge with one Na(5)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 21-46°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Na(1), one Ti(1), and one Si(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Na(2), one Na(3), one Na(6), one Ti(2), and one P(3) atom. In the third O site, O(3) is bonded in a distorted trigonal pyramidal geometry to one Na(1), one Na(4), one Ti(3), and one Si(2) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Na(2), one Na(4), one Na(5), one Ca(1), and one P(4) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Na(5), one Ti(3), and one P(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(6), one Ca(1), and one P(1) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Na(6), one Ti(1), and one P(2) atom. In the eighth O site, O(8) is bonded in a linear geometry to one Ti(2) and one P(2) atom. In the ninth O site, O(9) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(6), one Ti(1), and one P(3) atom. In the tenth O site, O(10) is bonded in a distorted trigonal pyramidal geometry to one Na(2), one Na(6), one Ti(2), and one Si(1) atom. In the eleventh O site, O(11) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(5), one Ti(3), and one P(4) atom. In the twelfth O site, O(12) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), one Na(5), one Ca(1), and one Si(2) atom. In the thirteenth O site, O(13) is bonded in a linear geometry to one Ti(3) and one P(3) atom. In the fourteenth O site, O(14) is bonded in a 4-coordinate geometry to one Na(3), one Na(5), one Ca(1), and one Si(1) atom. In the fifteenth O site, O(15) is bonded in a bent 150 degrees geometry to one Ti(1) and one P(4) atom. In the sixteenth O site, O(16) is bonded in a distorted bent 150 degrees geometry to one Na(4), one Na(6), one Ti(2), and one Si(2) atom. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Na(4), one Ca(1), and one P(3) atom. In the eighteenth O site, O(18) is bonded in a distorted bent 150 degrees geometry to one Na(4), one Na(6), one Ti(3), and one Si(1) atom. In the nineteenth O site, O(19) is bonded in a 3-coordinate geometry to one Na(3), one Ti(2), and one P(4) atom. In the twentieth O site, O(20) is bonded in a distorted bent 150 degrees geometry to one Na(4), one Ti(1), and one Si(2) atom. In the twenty-first O site, O(21) is bonded in a 5-coordinate geometry to one Na(1), one Na(3), one Na(6), one Ti(1), and one P(1) atom. In the twenty-second O site, O(22) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), one Na(3), one Ti(2), and one P(1) atom. In the twenty-third O site, O(23) is bonded in a 5-coordinate geometry to one Na(1), one Na(4), one Na(5), one Ti(3), and one P(2) atom. In the twenty-fourth O site, O(24) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), one Na(4), one Ca(1), and one P(2) atom.
Na6CaTi3Si2(PO6)4 crystallizes in the triclinic P1 space group. There are six inequivalent Na sites. In the first Na site, Na(1) is bonded in a distorted hexagonal planar geometry to one O(1), one O(11), one O(21), one O(23), one O(3), and one O(9) atom. The Na(1)-O(1) bond length is 2.56 Å. The Na(1)-O(11) bond length is 2.45 Å. The Na(1)-O(21) bond length is 2.67 Å. The Na(1)-O(23) bond length is 2.40 Å. The Na(1)-O(3) bond length is 2.51 Å. The Na(1)-O(9) bond length is 2.63 Å. In the second Na site, Na(2) is bonded to one O(10), one O(12), one O(2), one O(22), one O(24), and one O(4) atom to form distorted NaO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra,  an edgeedge with one Na(5)O6 pentagonal pyramid,  a faceface with one Ca(1)O6 octahedra, and  a faceface with one Ti(2)O6 octahedra. The Na(2)-O(10) bond length is 2.52 Å. The Na(2)-O(12) bond length is 2.38 Å. The Na(2)-O(2) bond length is 2.44 Å. The Na(2)-O(22) bond length is 2.48 Å. The Na(2)-O(24) bond length is 2.49 Å. The Na(2)-O(4) bond length is 2.52 Å. In the third Na site, Na(3) is bonded in a 4-coordinate geometry to one O(14), one O(19), one O(2), one O(21), and one O(22) atom. The Na(3)-O(14) bond length is 2.57 Å. The Na(3)-O(19) bond length is 2.44 Å. The Na(3)-O(2) bond length is 2.36 Å. The Na(3)-O(21) bond length is 2.34 Å. The Na(3)-O(22) bond length is 2.64 Å. In the fourth Na site, Na(4) is bonded in a 8-coordinate geometry to one O(16), one O(17), one O(18), one O(20), one O(23), one O(24), one O(3), and one O(4) atom. The Na(4)-O(16) bond length is 2.92 Å. The Na(4)-O(17) bond length is 2.37 Å. The Na(4)-O(18) bond length is 2.75 Å. The Na(4)-O(20) bond length is 2.94 Å. The Na(4)-O(23) bond length is 2.70 Å. The Na(4)-O(24) bond length is 2.42 Å. The Na(4)-O(3) bond length is 2.40 Å. The Na(4)-O(4) bond length is 2.35 Å. In the fifth Na site, Na(5) is bonded to one O(11), one O(12), one O(14), one O(23), one O(4), and one O(5) atom to form distorted NaO6 pentagonal pyramids that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one P(4)O4 tetrahedra,  a faceface with one Ca(1)O6 octahedra, and  a faceface with one Ti(3)O6 octahedra. The Na(5)-O(11) bond length is 2.43 Å. The Na(5)-O(12) bond length is 2.31 Å. The Na(5)-O(14) bond length is 2.43 Å. The Na(5)-O(23) bond length is 2.36 Å. The Na(5)-O(4) bond length is 2.48 Å. The Na(5)-O(5) bond length is 2.57 Å. In the sixth Na site, Na(6) is bonded in a 8-coordinate geometry to one O(10), one O(16), one O(18), one O(2), one O(21), one O(6), one O(7), and one O(9) atom. The Na(6)-O(10) bond length is 2.39 Å. The Na(6)-O(16) bond length is 2.60 Å. The Na(6)-O(18) bond length is 2.94 Å. The Na(6)-O(2) bond length is 2.86 Å. The Na(6)-O(21) bond length is 2.64 Å. The Na(6)-O(6) bond length is 2.48 Å. The Na(6)-O(7) bond length is 2.76 Å. The Na(6)-O(9) bond length is 2.36 Å. Ca(1) is bonded to one O(12), one O(14), one O(17), one O(24), one O(4), and one O(6) atom to form distorted CaO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra,  a faceface with one Na(2)O6 octahedra, and  a faceface with one Na(5)O6 pentagonal pyramid. The Ca(1)-O(12) bond length is 2.31 Å. The Ca(1)-O(14) bond length is 2.26 Å. The Ca(1)-O(17) bond length is 2.29 Å. The Ca(1)-O(24) bond length is 2.31 Å. The Ca(1)-O(4) bond length is 2.48 Å. The Ca(1)-O(6) bond length is 2.20 Å. There are three inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to one O(1), one O(15), one O(20), one O(21), one O(7), and one O(9) atom to form TiO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and  a cornercorner with one P(4)O4 tetrahedra. The Ti(1)-O(1) bond length is 1.89 Å. The Ti(1)-O(15) bond length is 1.87 Å. The Ti(1)-O(20) bond length is 1.82 Å. The Ti(1)-O(21) bond length is 2.06 Å. The Ti(1)-O(7) bond length is 1.99 Å. The Ti(1)-O(9) bond length is 2.08 Å. In the second Ti site, Ti(2) is bonded to one O(10), one O(16), one O(19), one O(2), one O(22), and one O(8) atom to form TiO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, and  a faceface with one Na(2)O6 octahedra. The Ti(2)-O(10) bond length is 1.94 Å. The Ti(2)-O(16) bond length is 1.89 Å. The Ti(2)-O(19) bond length is 2.07 Å. The Ti(2)-O(2) bond length is 2.20 Å. The Ti(2)-O(22) bond length is 2.08 Å. The Ti(2)-O(8) bond length is 1.90 Å. In the third Ti site, Ti(3) is bonded to one O(11), one O(13), one O(18), one O(23), one O(3), and one O(5) atom to form distorted TiO6 octahedra that share  a cornercorner with one Si(1)O4 tetrahedra,  a cornercorner with one Si(2)O4 tetrahedra,  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, and  a faceface with one Na(5)O6 pentagonal pyramid. The Ti(3)-O(11) bond length is 2.13 Å. The Ti(3)-O(13) bond length is 1.91 Å. The Ti(3)-O(18) bond length is 1.89 Å. The Ti(3)-O(23) bond length is 2.22 Å. The Ti(3)-O(3) bond length is 1.94 Å. The Ti(3)-O(5) bond length is 2.06 Å. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to one O(1), one O(10), one O(14), and one O(18) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Ca(1)O6 octahedra,  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra, and  a cornercorner with one Na(5)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 22-56°. The Si(1)-O(1) bond length is 1.64 Å. The Si(1)-O(10) bond length is 1.66 Å. The Si(1)-O(14) bond length is 1.60 Å. The Si(1)-O(18) bond length is 1.70 Å. In the second Si site, Si(2) is bonded to one O(12), one O(16), one O(20), and one O(3) atom to form SiO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Ca(1)O6 octahedra,  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra, and  a cornercorner with one Na(5)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 19-47°. The Si(2)-O(12) bond length is 1.59 Å. The Si(2)-O(16) bond length is 1.68 Å. The Si(2)-O(20) bond length is 1.64 Å. The Si(2)-O(3) bond length is 1.66 Å. There are four inequivalent P sites. In the first P site, P(1) is bonded to one O(21), one O(22), one O(5), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Ca(1)O6 octahedra,  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra, and  a cornercorner with one Na(5)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 31-57°. The P(1)-O(21) bond length is 1.58 Å. The P(1)-O(22) bond length is 1.56 Å. The P(1)-O(5) bond length is 1.57 Å. The P(1)-O(6) bond length is 1.52 Å. In the second P site, P(2) is bonded to one O(23), one O(24), one O(7), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Ca(1)O6 octahedra,  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra, and  a cornercorner with one Na(5)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 18-47°. The P(2)-O(23) bond length is 1.56 Å. The P(2)-O(24) bond length is 1.52 Å. The P(2)-O(7) bond length is 1.53 Å. The P(2)-O(8) bond length is 1.59 Å. In the third P site, P(3) is bonded to one O(13), one O(17), one O(2), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Ca(1)O6 octahedra,  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(2)O6 octahedra, and  a cornercorner with one Ti(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 9-49°. The P(3)-O(13) bond length is 1.59 Å. The P(3)-O(17) bond length is 1.52 Å. The P(3)-O(2) bond length is 1.56 Å. The P(3)-O(9) bond length is 1.55 Å. In the fourth P site, P(4) is bonded to one O(11), one O(15), one O(19), and one O(4) atom to form PO4 tetrahedra that share  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Ca(1)O6 octahedra,  a cornercorner with one Ti(1)O6 octahedra,  a cornercorner with one Ti(2)O6 octahedra,  a cornercorner with one Ti(3)O6 octahedra, and  an edgeedge with one Na(5)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 21-46°. The P(4)-O(11) bond length is 1.55 Å. The P(4)-O(15) bond length is 1.54 Å. The P(4)-O(19) bond length is 1.56 Å. The P(4)-O(4) bond length is 1.54 Å. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Na(1), one Ti(1), and one Si(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Na(2), one Na(3), one Na(6), one Ti(2), and one P(3) atom. In the third O site, O(3) is bonded in a distorted trigonal pyramidal geometry to one Na(1), one Na(4), one Ti(3), and one Si(2) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Na(2), one Na(4), one Na(5), one Ca(1), and one P(4) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Na(5), one Ti(3), and one P(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(6), one Ca(1), and one P(1) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Na(6), one Ti(1), and one P(2) atom. In the eighth O site, O(8) is bonded in a linear geometry to one Ti(2) and one P(2) atom. In the ninth O site, O(9) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(6), one Ti(1), and one P(3) atom. In the tenth O site, O(10) is bonded in a distorted trigonal pyramidal geometry to one Na(2), one Na(6), one Ti(2), and one Si(1) atom. In the eleventh O site, O(11) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Na(5), one Ti(3), and one P(4) atom. In the twelfth O site, O(12) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), one Na(5), one Ca(1), and one Si(2) atom. In the thirteenth O site, O(13) is bonded in a linear geometry to one Ti(3) and one P(3) atom. In the fourteenth O site, O(14) is bonded in a 4-coordinate geometry to one Na(3), one Na(5), one Ca(1), and one Si(1) atom. In the fifteenth O site, O(15) is bonded in a bent 150 degrees geometry to one Ti(1) and one P(4) atom. In the sixteenth O site, O(16) is bonded in a distorted bent 150 degrees geometry to one Na(4), one Na(6), one Ti(2), and one Si(2) atom. In the seventeenth O site, O(17) is bonded in a 3-coordinate geometry to one Na(4), one Ca(1), and one P(3) atom. In the eighteenth O site, O(18) is bonded in a distorted bent 150 degrees geometry to one Na(4), one Na(6), one Ti(3), and one Si(1) atom. In the nineteenth O site, O(19) is bonded in a 3-coordinate geometry to one Na(3), one Ti(2), and one P(4) atom. In the twentieth O site, O(20) is bonded in a distorted bent 150 degrees geometry to one Na(4), one Ti(1), and one Si(2) atom. In the twenty-first O site, O(21) is bonded in a 5-coordinate geometry to one Na(1), one Na(3), one Na(6), one Ti(1), and one P(1) atom. In the twenty-second O site, O(22) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), one Na(3), one Ti(2), and one P(1) atom. In the twenty-third O site, O(23) is bonded in a 5-coordinate geometry to one Na(1), one Na(4), one Na(5), one Ti(3), and one P(2) atom. In the twenty-fourth O site, O(24) is bonded in a distorted rectangular see-saw-like geometry to one Na(2), one Na(4), one Ca(1), and one P(2) atom.