Na2Th(PO4)2 crystallizes in the triclinic P-1 space group. There are four inequivalent Na sites. In the first Na site, Na(1) is bonded in a 8-coordinate geometry to one O(10), one O(14), one O(3), one O(5), two equivalent O(4), and two equivalent O(7) atoms. In the second Na site, Na(2) is bonded in a 8-coordinate geometry to one O(13); one O(15); one O(2,16); one O(5); one O(6); one O(9); and two equivalent O(11) atoms. In the third Na site, Na(3) is bonded in a 8-coordinate geometry to one O(12), one O(4), one O(6), one O(9), two equivalent O(13), and two equivalent O(14) atoms. In the fourth Na site, Na(4) is bonded in a 8-coordinate geometry to one O(2,16); one O(3); one O(5); one O(7); one O(8); one O(9); and two equivalent O(1) atoms. There are two inequivalent Th sites. In the first Th site, Th(1) is bonded in a 8-coordinate geometry to one O(1); one O(11); one O(3); one O(5); one O(6); one O(9); and two equivalent O(2,16) atoms. In the second Th site, Th(2) is bonded in a 8-coordinate geometry to one O(10), one O(12), one O(13), one O(14), one O(15), one O(4), one O(7), and one O(8) atom. There are four inequivalent P sites. In the first P site, P(1) is bonded in a tetrahedral geometry to one O(1); one O(15); one O(2,16); and one O(3) atom. In the second P site, P(2) is bonded in a tetrahedral geometry to one O(11); one O(2,16); one O(6); and one O(8) atom. In the third P site, P(3) is bonded in a tetrahedral geometry to one O(10), one O(14), one O(7), and one O(9) atom. In the fourth P site, P(4) is bonded in a tetrahedral geometry to one O(12), one O(13), one O(4), and one O(5) atom. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Na(4), one Th(1), and one P(1) atom. In the second O site, O(2,16) is bonded in a 3-coordinate geometry to one Na(4), one Th(1), and one P(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Na(1), one Na(4), one Th(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Na(3), two equivalent Na(1), one Th(2), and one P(4) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Na(1), one Na(2), one Na(4), one Th(1), and one P(4) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Na(2), one Na(3), one Th(1), and one P(2) atom. In the seventh O site, O(7) is bonded in a 1-coordinate geometry to one Na(4), two equivalent Na(1), one Th(2), and one P(3) atom. In the eighth O site, O(8) is bonded in a 1-coordinate geometry to one Na(4), one Th(2), and one P(2) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one Na(2), one Na(3), one Na(4), one Th(1), and one P(3) atom. In the tenth O site, O(10) is bonded in a 1-coordinate geometry to one Na(1), one Th(2), and one P(3) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to two equivalent Na(2), one Th(1), and one P(2) atom. In the twelfth O site, O(12) is bonded in a 1-coordinate geometry to one Na(3), one Th(2), and one P(4) atom. In the thirteenth O site, O(13) is bonded in a 1-coordinate geometry to one Na(2), two equivalent Na(3), one Th(2), and one P(4) atom. In the fourteenth O site, O(14) is bonded in a distorted single-bond geometry to one Na(1), two equivalent Na(3), one Th(2), and one P(3) atom. In the fifteenth O site, O(15) is bonded in a 1-coordinate geometry to one Na(2), one Th(2), and one P(1) atom.
Na2Th(PO4)2 crystallizes in the triclinic P-1 space group. There are four inequivalent Na sites. In the first Na site, Na(1) is bonded in a 8-coordinate geometry to one O(10), one O(14), one O(3), one O(5), two equivalent O(4), and two equivalent O(7) atoms. The Na(1)-O(10) bond length is 2.44 Å. The Na(1)-O(14) bond length is 2.66 Å. The Na(1)-O(3) bond length is 2.43 Å. The Na(1)-O(5) bond length is 2.81 Å. There is one shorter (2.56 Å) and one longer (2.78 Å) Na(1)-O(4) bond length. There is one shorter (2.44 Å) and one longer (2.74 Å) Na(1)-O(7) bond length. In the second Na site, Na(2) is bonded in a 8-coordinate geometry to one O(13); one O(15); one O(2,16); one O(5); one O(6); one O(9); and two equivalent O(11) atoms. The Na(2)-O(13) bond length is 2.84 Å. The Na(2)-O(15) bond length is 2.63 Å. The Na(2)-O(2,16) bond length is 2.55 Å. The Na(2)-O(5) bond length is 2.98 Å. The Na(2)-O(6) bond length is 2.33 Å. The Na(2)-O(9) bond length is 2.92 Å. There is one shorter (2.36 Å) and one longer (2.57 Å) Na(2)-O(11) bond length. In the third Na site, Na(3) is bonded in a 8-coordinate geometry to one O(12), one O(4), one O(6), one O(9), two equivalent O(13), and two equivalent O(14) atoms. The Na(3)-O(12) bond length is 2.43 Å. The Na(3)-O(4) bond length is 2.66 Å. The Na(3)-O(6) bond length is 2.43 Å. The Na(3)-O(9) bond length is 2.82 Å. There is one shorter (2.45 Å) and one longer (2.74 Å) Na(3)-O(13) bond length. There is one shorter (2.56 Å) and one longer (2.79 Å) Na(3)-O(14) bond length. In the fourth Na site, Na(4) is bonded in a 8-coordinate geometry to one O(2,16); one O(3); one O(5); one O(7); one O(8); one O(9); and two equivalent O(1) atoms. The Na(4)-O(2,16) bond length is 2.55 Å. The Na(4)-O(3) bond length is 2.34 Å. The Na(4)-O(5) bond length is 2.92 Å. The Na(4)-O(7) bond length is 2.84 Å. The Na(4)-O(8) bond length is 2.63 Å. The Na(4)-O(9) bond length is 2.98 Å. There is one shorter (2.36 Å) and one longer (2.57 Å) Na(4)-O(1) bond length. There are two inequivalent Th sites. In the first Th site, Th(1) is bonded in a 8-coordinate geometry to one O(1); one O(11); one O(3); one O(5); one O(6); one O(9); and two equivalent O(2,16) atoms. The Th(1)-O(1) bond length is 2.54 Å. The Th(1)-O(11) bond length is 2.54 Å. The Th(1)-O(3) bond length is 2.53 Å. The Th(1)-O(5) bond length is 2.40 Å. The Th(1)-O(6) bond length is 2.53 Å. The Th(1)-O(9) bond length is 2.40 Å. There is one shorter (2.34 Å) and one longer (2.35 Å) Th(1)-O(2,16) bond length. In the second Th site, Th(2) is bonded in a 8-coordinate geometry to one O(10), one O(12), one O(13), one O(14), one O(15), one O(4), one O(7), and one O(8) atom. The Th(2)-O(10) bond length is 2.65 Å. The Th(2)-O(12) bond length is 2.65 Å. The Th(2)-O(13) bond length is 2.43 Å. The Th(2)-O(14) bond length is 2.38 Å. The Th(2)-O(15) bond length is 2.33 Å. The Th(2)-O(4) bond length is 2.38 Å. The Th(2)-O(7) bond length is 2.43 Å. The Th(2)-O(8) bond length is 2.33 Å. There are four inequivalent P sites. In the first P site, P(1) is bonded in a tetrahedral geometry to one O(1); one O(15); one O(2,16); and one O(3) atom. The P(1)-O(1) bond length is 1.54 Å. The P(1)-O(15) bond length is 1.54 Å. The P(1)-O(2,16) bond length is 1.53 Å. The P(1)-O(3) bond length is 1.54 Å. In the second P site, P(2) is bonded in a tetrahedral geometry to one O(11); one O(2,16); one O(6); and one O(8) atom. The P(2)-O(11) bond length is 1.54 Å. The P(2)-O(2,16) bond length is 1.53 Å. The P(2)-O(6) bond length is 1.54 Å. The P(2)-O(8) bond length is 1.54 Å. In the third P site, P(3) is bonded in a tetrahedral geometry to one O(10), one O(14), one O(7), and one O(9) atom. The P(3)-O(10) bond length is 1.56 Å. The P(3)-O(14) bond length is 1.54 Å. The P(3)-O(7) bond length is 1.53 Å. The P(3)-O(9) bond length is 1.52 Å. In the fourth P site, P(4) is bonded in a tetrahedral geometry to one O(12), one O(13), one O(4), and one O(5) atom. The P(4)-O(12) bond length is 1.56 Å. The P(4)-O(13) bond length is 1.53 Å. The P(4)-O(4) bond length is 1.54 Å. The P(4)-O(5) bond length is 1.52 Å. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Na(4), one Th(1), and one P(1) atom. In the second O site, O(2,16) is bonded in a 3-coordinate geometry to one Na(4), one Th(1), and one P(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Na(1), one Na(4), one Th(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Na(3), two equivalent Na(1), one Th(2), and one P(4) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Na(1), one Na(2), one Na(4), one Th(1), and one P(4) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Na(2), one Na(3), one Th(1), and one P(2) atom. In the seventh O site, O(7) is bonded in a 1-coordinate geometry to one Na(4), two equivalent Na(1), one Th(2), and one P(3) atom. In the eighth O site, O(8) is bonded in a 1-coordinate geometry to one Na(4), one Th(2), and one P(2) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one Na(2), one Na(3), one Na(4), one Th(1), and one P(3) atom. In the tenth O site, O(10) is bonded in a 1-coordinate geometry to one Na(1), one Th(2), and one P(3) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to two equivalent Na(2), one Th(1), and one P(2) atom. In the twelfth O site, O(12) is bonded in a 1-coordinate geometry to one Na(3), one Th(2), and one P(4) atom. In the thirteenth O site, O(13) is bonded in a 1-coordinate geometry to one Na(2), two equivalent Na(3), one Th(2), and one P(4) atom. In the fourteenth O site, O(14) is bonded in a distorted single-bond geometry to one Na(1), two equivalent Na(3), one Th(2), and one P(3) atom. In the fifteenth O site, O(15) is bonded in a 1-coordinate geometry to one Na(2), one Th(2), and one P(1) atom.