NaY(C2O5)2 crystallizes in the monoclinic P2_1 space group. Na(1) is bonded in a 7-coordinate geometry to one O(10), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. Y(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(4), one O(5), one O(6), one O(8), and one O(9) atom. There are four inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(1), one O(10), and one O(2) atom. In the second C site, C(2) is bonded in a trigonal planar geometry to one O(3), one O(4), and one O(9) atom. In the third C site, C(3) is bonded in a trigonal planar geometry to one O(3), one O(5), and one O(6) atom. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one O(10), one O(7), and one O(8) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a linear geometry to one Y(1) and one C(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Y(1) and one C(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Na(1), one C(2), and one C(3) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(1), one Y(1), and one C(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Na(1), one Y(1), and one C(3) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(1), one Y(1), and one C(3) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Na(1) and one C(4) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Na(1), one Y(1), and one C(4) atom. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Y(1) and one C(2) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Na(1), one C(1), and one C(4) atom.
NaY(C2O5)2 crystallizes in the monoclinic P2_1 space group. Na(1) is bonded in a 7-coordinate geometry to one O(10), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. The Na(1)-O(10) bond length is 2.60 Å. The Na(1)-O(3) bond length is 2.53 Å. The Na(1)-O(4) bond length is 2.59 Å. The Na(1)-O(5) bond length is 2.71 Å. The Na(1)-O(6) bond length is 2.41 Å. The Na(1)-O(7) bond length is 2.23 Å. The Na(1)-O(8) bond length is 2.63 Å. Y(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(4), one O(5), one O(6), one O(8), and one O(9) atom. The Y(1)-O(1) bond length is 2.27 Å. The Y(1)-O(2) bond length is 2.28 Å. The Y(1)-O(4) bond length is 2.34 Å. The Y(1)-O(5) bond length is 2.34 Å. The Y(1)-O(6) bond length is 2.67 Å. The Y(1)-O(8) bond length is 2.23 Å. The Y(1)-O(9) bond length is 2.22 Å. There are four inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(1), one O(10), and one O(2) atom. The C(1)-O(1) bond length is 1.25 Å. The C(1)-O(10) bond length is 1.40 Å. The C(1)-O(2) bond length is 1.26 Å. In the second C site, C(2) is bonded in a trigonal planar geometry to one O(3), one O(4), and one O(9) atom. The C(2)-O(3) bond length is 1.38 Å. The C(2)-O(4) bond length is 1.26 Å. The C(2)-O(9) bond length is 1.26 Å. In the third C site, C(3) is bonded in a trigonal planar geometry to one O(3), one O(5), and one O(6) atom. The C(3)-O(3) bond length is 1.46 Å. The C(3)-O(5) bond length is 1.26 Å. The C(3)-O(6) bond length is 1.24 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one O(10), one O(7), and one O(8) atom. The C(4)-O(10) bond length is 1.44 Å. The C(4)-O(7) bond length is 1.22 Å. The C(4)-O(8) bond length is 1.28 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a linear geometry to one Y(1) and one C(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Y(1) and one C(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Na(1), one C(2), and one C(3) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(1), one Y(1), and one C(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Na(1), one Y(1), and one C(3) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(1), one Y(1), and one C(3) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Na(1) and one C(4) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Na(1), one Y(1), and one C(4) atom. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Y(1) and one C(2) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one Na(1), one C(1), and one C(4) atom.