Na(CO)2 is Ullmanite-like structured and crystallizes in the monoclinic P2_1/c space group. Na(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form a mixture of distorted corner and edge-sharing NaO6 octahedra. The corner-sharing octahedral tilt angles range from 61-70°. There are two inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one O(2) atom. In the second C site, C(2) is bonded in a distorted single-bond geometry to one O(1) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to three equivalent Na(1) and one C(2) atom. In the second O site, O(2) is bonded to three equivalent Na(1) and one C(1) atom to form a mixture of distorted corner and edge-sharing ONa3C trigonal pyramids.
Na(CO)2 is Ullmanite-like structured and crystallizes in the monoclinic P2_1/c space group. Na(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form a mixture of distorted corner and edge-sharing NaO6 octahedra. The corner-sharing octahedral tilt angles range from 61-70°. There are a spread of Na(1)-O(1) bond distances ranging from 2.36-2.82 Å. There are a spread of Na(1)-O(2) bond distances ranging from 2.37-2.53 Å. There are two inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one O(2) atom. The C(1)-O(2) bond length is 1.26 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one O(1) atom. The C(2)-O(1) bond length is 1.27 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to three equivalent Na(1) and one C(2) atom. In the second O site, O(2) is bonded to three equivalent Na(1) and one C(1) atom to form a mixture of distorted corner and edge-sharing ONa3C trigonal pyramids.