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Common molecules sample 50135 - Reciprocal Net Log in
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Empirical formula: C3O2
Formula weight: 68.032 g/mole
Common name: Carbon Suboxide
Structural formula: OC3O
CAS registry number: 504-64-3
Keyword: atomic carbon
Keyword: lachrymatory gas
Short description: Carbon suboxide is a foul-smelling lachrymatory gas.
Miscellaneous comments: Spartan'02, Wavefunction, Inc., Irvine, CA
Miscellaneous comments: Structure was calculated using an ab initio method (HF 3-21G*).
Layman's explanation: Carbon Suboxide is a foul-smelling, lachrymatory gas produced by the dehydration of malonic acid, CH2(COOH)2, with P4O10. It is a stable molecule at -78° C, but at 25° C the compound is unstable and it polymerizes to form highly colored solid products. Under the influence of ultraviolet light (in the process known as photolysis), C3O2 decomposes to form the very reactive molecule ketene, C2O. Since carbon suboxide is the acid anhydride of malonic acid, it reacts slowly with water to produce that acid. In the laboratory, carbon suboxide, is widely used as a source of atomic carbon. As a gas it can be stored in a bulb at a pressure of a few mm Hg, but under conditions of standard temperature and pressure (300 K, 1 atm), C3O2 forms a yellow, red, or brown polymer.
Lab name: Common molecules
Sample provider: Contributed by Indiana University
Status: Complete, visible to public
Repository Files:
50135.crt 50135.gif 50135.ort 50135.pdb 50135.sdt

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