NbSn6OF15 crystallizes in the monoclinic Cc space group. Nb(1) is bonded in an octahedral geometry to one O(1), one F(10), one F(15), one F(3), one F(4), and one F(9) atom. There are six inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 3-coordinate geometry to one F(12), one F(2), and one F(6) atom. In the second Sn site, Sn(2) is bonded in a 3-coordinate geometry to one F(1), one F(11), and one F(5) atom. In the third Sn site, Sn(3) is bonded in a 4-coordinate geometry to one F(11), one F(13), one F(5), and one F(7) atom. In the fourth Sn site, Sn(4) is bonded in a 4-coordinate geometry to one F(12), one F(14), one F(6), and one F(8) atom. In the fifth Sn site, Sn(5) is bonded in a 4-coordinate geometry to one F(13), one F(15), one F(2), and one F(7) atom. In the sixth Sn site, Sn(6) is bonded in a 5-coordinate geometry to one O(1), one F(1), one F(14), one F(4), and one F(8) atom. O(1) is bonded in a distorted single-bond geometry to one Nb(1) and one Sn(6) atom. There are fifteen inequivalent F sites. In the first F site, F(1) is bonded in a bent 120 degrees geometry to one Sn(2) and one Sn(6) atom. In the second F site, F(2) is bonded in a bent 120 degrees geometry to one Sn(1) and one Sn(5) atom. In the third F site, F(3) is bonded in a single-bond geometry to one Nb(1) atom. In the fourth F site, F(4) is bonded in a distorted single-bond geometry to one Nb(1) and one Sn(6) atom. In the fifth F site, F(5) is bonded in a bent 120 degrees geometry to one Sn(2) and one Sn(3) atom. In the sixth F site, F(6) is bonded in a bent 120 degrees geometry to one Sn(1) and one Sn(4) atom. In the seventh F site, F(7) is bonded in a bent 120 degrees geometry to one Sn(3) and one Sn(5) atom. In the eighth F site, F(8) is bonded in a bent 120 degrees geometry to one Sn(4) and one Sn(6) atom. In the ninth F site, F(9) is bonded in a single-bond geometry to one Nb(1) atom. In the tenth F site, F(10) is bonded in a single-bond geometry to one Nb(1) atom. In the eleventh F site, F(11) is bonded in a bent 150 degrees geometry to one Sn(2) and one Sn(3) atom. In the twelfth F site, F(12) is bonded in a bent 150 degrees geometry to one Sn(1) and one Sn(4) atom. In the thirteenth F site, F(13) is bonded in a distorted bent 150 degrees geometry to one Sn(3) and one Sn(5) atom. In the fourteenth F site, F(14) is bonded in a bent 150 degrees geometry to one Sn(4) and one Sn(6) atom. In the fifteenth F site, F(15) is bonded in a distorted bent 150 degrees geometry to one Nb(1) and one Sn(5) atom.
NbSn6OF15 crystallizes in the monoclinic Cc space group. Nb(1) is bonded in an octahedral geometry to one O(1), one F(10), one F(15), one F(3), one F(4), and one F(9) atom. The Nb(1)-O(1) bond length is 1.79 Å. The Nb(1)-F(10) bond length is 1.96 Å. The Nb(1)-F(15) bond length is 2.13 Å. The Nb(1)-F(3) bond length is 1.97 Å. The Nb(1)-F(4) bond length is 1.98 Å. The Nb(1)-F(9) bond length is 1.96 Å. There are six inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 3-coordinate geometry to one F(12), one F(2), and one F(6) atom. The Sn(1)-F(12) bond length is 2.06 Å. The Sn(1)-F(2) bond length is 2.19 Å. The Sn(1)-F(6) bond length is 2.17 Å. In the second Sn site, Sn(2) is bonded in a 3-coordinate geometry to one F(1), one F(11), and one F(5) atom. The Sn(2)-F(1) bond length is 2.19 Å. The Sn(2)-F(11) bond length is 2.07 Å. The Sn(2)-F(5) bond length is 2.17 Å. In the third Sn site, Sn(3) is bonded in a 4-coordinate geometry to one F(11), one F(13), one F(5), and one F(7) atom. The Sn(3)-F(11) bond length is 2.31 Å. The Sn(3)-F(13) bond length is 2.15 Å. The Sn(3)-F(5) bond length is 2.17 Å. The Sn(3)-F(7) bond length is 2.33 Å. In the fourth Sn site, Sn(4) is bonded in a 4-coordinate geometry to one F(12), one F(14), one F(6), and one F(8) atom. The Sn(4)-F(12) bond length is 2.31 Å. The Sn(4)-F(14) bond length is 2.15 Å. The Sn(4)-F(6) bond length is 2.17 Å. The Sn(4)-F(8) bond length is 2.31 Å. In the fifth Sn site, Sn(5) is bonded in a 4-coordinate geometry to one F(13), one F(15), one F(2), and one F(7) atom. The Sn(5)-F(13) bond length is 2.19 Å. The Sn(5)-F(15) bond length is 2.40 Å. The Sn(5)-F(2) bond length is 2.17 Å. The Sn(5)-F(7) bond length is 2.09 Å. In the sixth Sn site, Sn(6) is bonded in a 5-coordinate geometry to one O(1), one F(1), one F(14), one F(4), and one F(8) atom. The Sn(6)-O(1) bond length is 2.44 Å. The Sn(6)-F(1) bond length is 2.18 Å. The Sn(6)-F(14) bond length is 2.20 Å. The Sn(6)-F(4) bond length is 2.62 Å. The Sn(6)-F(8) bond length is 2.10 Å. O(1) is bonded in a distorted single-bond geometry to one Nb(1) and one Sn(6) atom. There are fifteen inequivalent F sites. In the first F site, F(1) is bonded in a bent 120 degrees geometry to one Sn(2) and one Sn(6) atom. In the second F site, F(2) is bonded in a bent 120 degrees geometry to one Sn(1) and one Sn(5) atom. In the third F site, F(3) is bonded in a single-bond geometry to one Nb(1) atom. In the fourth F site, F(4) is bonded in a distorted single-bond geometry to one Nb(1) and one Sn(6) atom. In the fifth F site, F(5) is bonded in a bent 120 degrees geometry to one Sn(2) and one Sn(3) atom. In the sixth F site, F(6) is bonded in a bent 120 degrees geometry to one Sn(1) and one Sn(4) atom. In the seventh F site, F(7) is bonded in a bent 120 degrees geometry to one Sn(3) and one Sn(5) atom. In the eighth F site, F(8) is bonded in a bent 120 degrees geometry to one Sn(4) and one Sn(6) atom. In the ninth F site, F(9) is bonded in a single-bond geometry to one Nb(1) atom. In the tenth F site, F(10) is bonded in a single-bond geometry to one Nb(1) atom. In the eleventh F site, F(11) is bonded in a bent 150 degrees geometry to one Sn(2) and one Sn(3) atom. In the twelfth F site, F(12) is bonded in a bent 150 degrees geometry to one Sn(1) and one Sn(4) atom. In the thirteenth F site, F(13) is bonded in a distorted bent 150 degrees geometry to one Sn(3) and one Sn(5) atom. In the fourteenth F site, F(14) is bonded in a bent 150 degrees geometry to one Sn(4) and one Sn(6) atom. In the fifteenth F site, F(15) is bonded in a distorted bent 150 degrees geometry to one Nb(1) and one Sn(5) atom.