NaCNO2 crystallizes in the monoclinic P2_1/c space group. Na(1) is bonded to two equivalent N(1), one O(1), and two equivalent O(2) atoms to form distorted corner-sharing NaN2O3 trigonal bipyramids. C(1) is bonded in a 3-coordinate geometry to one N(1), one O(1), and one O(2) atom. N(1) is bonded in a 4-coordinate geometry to two equivalent Na(1), one C(1), and one O(1) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(1), one C(1), and one N(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Na(1) and one C(1) atom.
NaCNO2 crystallizes in the monoclinic P2_1/c space group. Na(1) is bonded to two equivalent N(1), one O(1), and two equivalent O(2) atoms to form distorted corner-sharing NaN2O3 trigonal bipyramids. There is one shorter (2.46 Å) and one longer (2.52 Å) Na(1)-N(1) bond length. The Na(1)-O(1) bond length is 2.40 Å. There is one shorter (2.41 Å) and one longer (2.47 Å) Na(1)-O(2) bond length. C(1) is bonded in a 3-coordinate geometry to one N(1), one O(1), and one O(2) atom. The C(1)-N(1) bond length is 1.30 Å. The C(1)-O(1) bond length is 1.36 Å. The C(1)-O(2) bond length is 1.24 Å. N(1) is bonded in a 4-coordinate geometry to two equivalent Na(1), one C(1), and one O(1) atom. The N(1)-O(1) bond length is 1.76 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(1), one C(1), and one N(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Na(1) and one C(1) atom.