Dheeraj Kumar Dheeraj Kumar. The table shows element percentages for C 3 O 2 (carbon suboxide). Molecular Structure of Carbon Suboxide. Structure, properties, spectra, suppliers and links for: Carbon suboxide, 504-64-3. bond lewis-structure. The structure of the phosphorus derivative showed a short P C bond consistent with a heteroalkene formulation. Solid state structure. Carbon suboxide, C 3 O 2, is a foul-smelling, lachrymatory gas that can be produced by the dehydration of malonic acid, CH 2 (COOH) 2, with P 4 O 10 in a vacuum at 140° to 150° C. Carbon suboxide is a linear, symmetrical molecule whose structure can be represented as O═C═C═C═O. Carbon suboxide, or tricarbon dioxide, is an oxide of carbon with chemical formula C 3O 2 or O=C=C=C=O. 708 Other complexes of this type were covered in Section 2.3.2.1. Martin - マーチン ♦ 39.1k 10 10 gold badges 132 132 silver badges 265 265 bronze badges. Structure of carbon suboxide. O = C = C = C = O − 2 + 2 0 + 2 − 2 Hence the central carbon ha 'O' oxidation number and other 2 carbon atoms has + 2 oxidation number. 109 5 5 bronze badges $\endgroup$ add a comment | 2 Answers Active Oldest Votes. Its four cumulative double bonds make it a cumulene. Also called tricarbon dioxide. share | improve this question | follow | edited Aug 16 '18 at 16:34. It is one of the stable members of the series of linear oxocarbons O=Cn=O, which also includes carbon dioxide (CO2) and pentacarbon dioxide (C carbon suboxide C3O2 OCCCO. What is the proper Lewis structure for carbon suboxide, $\ce{C3O2}$? Geometry of carbon: 2 coordinate: linear Prototypical structure: Element analysis. Carbon suboxide: A cumulene of molecular formula C 2 O 3, featuring two carbon-carbon double bonds and two terminal carbon-oxygen double bonds. Formula is C3O2, structure is:O=C=C=C=O. asked Dec 10 '14 at 14:21.