Cyclopentanepentone, also known as leuconic acid, is a hypothetical
organic compound
Some chemical authorities define an organic compound as a chemical compound that contains a carbon–hydrogen or carbon–carbon bond; others consider an organic compound to be any chemical compound that contains carbon. For example, carbon-co ...
with formula C
5O
5, the fivefold
ketone
In organic chemistry, a ketone is an organic compound with the structure , where R and R' can be a variety of carbon-containing substituents. Ketones contain a carbonyl group (a carbon-oxygen double bond C=O). The simplest ketone is acetone ( ...
of
cyclopentane
Cyclopentane (also called C pentane) is a highly flammable alicyclic compound, alicyclic hydrocarbon with chemical formula C5H10, C5H10 and CAS number 287-92-3, consisting of a ring of five carbon atoms each bonded with two hydrogen atoms above and ...
. It would be an
oxide
An oxide () is a chemical compound containing at least one oxygen atom and one other element in its chemical formula. "Oxide" itself is the dianion (anion bearing a net charge of −2) of oxygen, an O2− ion with oxygen in the oxidation st ...
of
carbon
Carbon () is a chemical element; it has chemical symbol, symbol C and atomic number 6. It is nonmetallic and tetravalence, tetravalent—meaning that its atoms are able to form up to four covalent bonds due to its valence shell exhibiting 4 ...
(an
oxocarbon
In chemistry, an oxocarbon or oxide of carbon is a chemical compound consisting only of carbon and oxygen. The simplest and most common oxocarbons are carbon monoxide (CO) and carbon dioxide (). Many other stable (practically if not thermodynamica ...
), indeed a
pentamer
A pentamer is an entity composed of five subunits.
In chemistry, it applies to molecules made of five monomers.
In biochemistry, it applies to macromolecules, particularly pentameric proteins, made of five protein sub-units.
In microbiology, a ...
of
carbon monoxide
Carbon monoxide (chemical formula CO) is a poisonous, flammable gas that is colorless, odorless, tasteless, and slightly less dense than air. Carbon monoxide consists of one carbon atom and one oxygen atom connected by a triple bond. It is the si ...
.
As of 2000, the compound had yet to be synthesized in bulk, but there have been reports of trace synthesis.
Related compounds
Cyclopentanepentone can be viewed as the neutral counterpart of the
croconate anion
An ion () is an atom or molecule with a net electrical charge. The charge of an electron is considered to be negative by convention and this charge is equal and opposite to the charge of a proton, which is considered to be positive by conven ...
.
The compound referred to in the literature and trade as "cyclopentanepentone pentahydrate" (C
5O
5·5H
2O) is probably
decahydroxycyclopentane (C
5(OH)
10).
References
See also
*
Cyclohexanehexone
{{Oxides of carbon
Oxocarbons
Hypothetical chemical compounds
Cyclic ketones
Polyketones
Conjugated ketones
Cyclopentanes