Na3CO5 crystallizes in the triclinic P1 space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a distorted trigonal planar geometry to one O(1), one O(3), one O(4), and one O(5) atom. In the second Na site, Na(2) is bonded in a trigonal planar geometry to one O(2), one O(4), and one O(5) atom. In the third Na site, Na(3) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), and one O(4) atom. C(1) is bonded in a trigonal planar geometry to one O(3), one O(4), and one O(5) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(1), one Na(3), and one O(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Na(2), one Na(3), and one O(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Na(1), one Na(3), and one C(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Na(3), and one C(1) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Na(1), one Na(2), and one C(1) atom.
Na3CO5 crystallizes in the triclinic P1 space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a distorted trigonal planar geometry to one O(1), one O(3), one O(4), and one O(5) atom. The Na(1)-O(1) bond length is 2.34 Å. The Na(1)-O(3) bond length is 2.24 Å. The Na(1)-O(4) bond length is 2.93 Å. The Na(1)-O(5) bond length is 2.21 Å. In the second Na site, Na(2) is bonded in a trigonal planar geometry to one O(2), one O(4), and one O(5) atom. The Na(2)-O(2) bond length is 2.31 Å. The Na(2)-O(4) bond length is 2.24 Å. The Na(2)-O(5) bond length is 2.19 Å. In the third Na site, Na(3) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), and one O(4) atom. The Na(3)-O(1) bond length is 2.30 Å. The Na(3)-O(2) bond length is 2.30 Å. The Na(3)-O(3) bond length is 2.36 Å. The Na(3)-O(4) bond length is 2.32 Å. C(1) is bonded in a trigonal planar geometry to one O(3), one O(4), and one O(5) atom. The C(1)-O(3) bond length is 1.31 Å. The C(1)-O(4) bond length is 1.31 Å. The C(1)-O(5) bond length is 1.29 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(1), one Na(3), and one O(2) atom. The O(1)-O(2) bond length is 1.36 Å. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Na(2), one Na(3), and one O(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Na(1), one Na(3), and one C(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Na(3), and one C(1) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Na(1), one Na(2), and one C(1) atom.