C4SeO2 is Indium-like structured and crystallizes in the orthorhombic Pnnm space group. The structure is zero-dimensional and consists of two 2,7-diselenatricyclo[6.2.0.03,6]deca-1(8),3(6)-diene-4,5,9,10-tetrone molecules. There are two inequivalent C sites. In the first C site, C(1) is bonded in a 3-coordinate geometry to one C(1), one C(2), and one Se(1) atom. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(1) and one O(1) atom. Se(1) is bonded in an L-shaped geometry to two equivalent C(1) atoms. O(1) is bonded in a single-bond geometry to one C(2) atom.
C4SeO2 is Indium-like structured and crystallizes in the orthorhombic Pnnm space group. The structure is zero-dimensional and consists of two 2,7-diselenatricyclo[6.2.0.03,6]deca-1(8),3(6)-diene-4,5,9,10-tetrone molecules. There are two inequivalent C sites. In the first C site, C(1) is bonded in a 3-coordinate geometry to one C(1), one C(2), and one Se(1) atom. The C(1)-C(1) bond length is 1.39 Å. The C(1)-C(2) bond length is 1.50 Å. The C(1)-Se(1) bond length is 1.88 Å. In the second C site, C(2) is bonded in a distorted single-bond geometry to one C(1) and one O(1) atom. The C(2)-O(1) bond length is 1.21 Å. Se(1) is bonded in an L-shaped geometry to two equivalent C(1) atoms. O(1) is bonded in a single-bond geometry to one C(2) atom.