NaU(B2O5)3 crystallizes in the monoclinic Cc space group. Na(1) is bonded in a 7-coordinate geometry to one O(11), one O(12), one O(14), one O(15), one O(5), one O(7), and one O(8) atom. U(1) is bonded in a distorted linear geometry to one O(12) and one O(13) atom. There are six inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. In the second B site, B(2) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form corner-sharing BO4 tetrahedra. In the third B site, B(3) is bonded in a trigonal planar geometry to one O(5), one O(7), and one O(8) atom. In the fourth B site, B(4) is bonded to one O(1), one O(4), one O(7), and one O(9) atom to form corner-sharing BO4 tetrahedra. In the fifth B site, B(5) is bonded to one O(10), one O(2), one O(6), and one O(9) atom to form corner-sharing BO4 tetrahedra. In the sixth B site, B(6) is bonded in a trigonal planar geometry to one O(10), one O(11), and one O(8) atom. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one B(1) and one B(4) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one B(1) and one B(5) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one B(1) and one B(2) atom. In the fourth O site, O(4) is bonded in a distorted water-like geometry to one B(2) and one B(4) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Na(1), one B(2), and one B(3) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one B(2) and one B(5) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Na(1), one B(3), and one B(4) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Na(1), one B(3), and one B(6) atom. In the ninth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one B(4) and one B(5) atom. In the tenth O site, O(10) is bonded in a distorted bent 150 degrees geometry to one B(5) and one B(6) atom. In the eleventh O site, O(11) is bonded in a single-bond geometry to one Na(1) and one B(6) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one Na(1) and one U(1) atom. In the thirteenth O site, O(13) is bonded in a single-bond geometry to one U(1) atom. In the fourteenth O site, O(14) is bonded in a single-bond geometry to one Na(1) atom. In the fifteenth O site, O(15) is bonded in a single-bond geometry to one Na(1) atom.
NaU(B2O5)3 crystallizes in the monoclinic Cc space group. Na(1) is bonded in a 7-coordinate geometry to one O(11), one O(12), one O(14), one O(15), one O(5), one O(7), and one O(8) atom. The Na(1)-O(11) bond length is 2.92 Å. The Na(1)-O(12) bond length is 2.61 Å. The Na(1)-O(14) bond length is 2.44 Å. The Na(1)-O(15) bond length is 2.44 Å. The Na(1)-O(5) bond length is 2.48 Å. The Na(1)-O(7) bond length is 2.49 Å. The Na(1)-O(8) bond length is 2.75 Å. U(1) is bonded in a distorted linear geometry to one O(12) and one O(13) atom. The U(1)-O(12) bond length is 1.81 Å. The U(1)-O(13) bond length is 1.79 Å. There are six inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. The B(1)-O(1) bond length is 1.38 Å. The B(1)-O(2) bond length is 1.37 Å. The B(1)-O(3) bond length is 1.38 Å. In the second B site, B(2) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form corner-sharing BO4 tetrahedra. The B(2)-O(3) bond length is 1.47 Å. The B(2)-O(4) bond length is 1.46 Å. The B(2)-O(5) bond length is 1.49 Å. The B(2)-O(6) bond length is 1.49 Å. In the third B site, B(3) is bonded in a trigonal planar geometry to one O(5), one O(7), and one O(8) atom. The B(3)-O(5) bond length is 1.37 Å. The B(3)-O(7) bond length is 1.37 Å. The B(3)-O(8) bond length is 1.38 Å. In the fourth B site, B(4) is bonded to one O(1), one O(4), one O(7), and one O(9) atom to form corner-sharing BO4 tetrahedra. The B(4)-O(1) bond length is 1.47 Å. The B(4)-O(4) bond length is 1.48 Å. The B(4)-O(7) bond length is 1.48 Å. The B(4)-O(9) bond length is 1.47 Å. In the fifth B site, B(5) is bonded to one O(10), one O(2), one O(6), and one O(9) atom to form corner-sharing BO4 tetrahedra. The B(5)-O(10) bond length is 1.45 Å. The B(5)-O(2) bond length is 1.51 Å. The B(5)-O(6) bond length is 1.48 Å. The B(5)-O(9) bond length is 1.48 Å. In the sixth B site, B(6) is bonded in a trigonal planar geometry to one O(10), one O(11), and one O(8) atom. The B(6)-O(10) bond length is 1.36 Å. The B(6)-O(11) bond length is 1.36 Å. The B(6)-O(8) bond length is 1.39 Å. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one B(1) and one B(4) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to one B(1) and one B(5) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one B(1) and one B(2) atom. In the fourth O site, O(4) is bonded in a distorted water-like geometry to one B(2) and one B(4) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Na(1), one B(2), and one B(3) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one B(2) and one B(5) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Na(1), one B(3), and one B(4) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Na(1), one B(3), and one B(6) atom. In the ninth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one B(4) and one B(5) atom. In the tenth O site, O(10) is bonded in a distorted bent 150 degrees geometry to one B(5) and one B(6) atom. In the eleventh O site, O(11) is bonded in a single-bond geometry to one Na(1) and one B(6) atom. In the twelfth O site, O(12) is bonded in a distorted single-bond geometry to one Na(1) and one U(1) atom. In the thirteenth O site, O(13) is bonded in a single-bond geometry to one U(1) atom. In the fourteenth O site, O(14) is bonded in a single-bond geometry to one Na(1) atom. In the fifteenth O site, O(15) is bonded in a single-bond geometry to one Na(1) atom.