1,2-Dioxin is a
heterocyclic
A heterocyclic compound or ring structure is a cyclic compound that has atoms of at least two different elements as members of its ring(s). Heterocyclic chemistry is the branch of organic chemistry dealing with the synthesis, properties, and ...
,
organic,
antiaromatic compound with the
chemical formula
In chemistry, a chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, ...
CHO. It is an
isomer
In chemistry, isomers are molecules or polyatomic ions with identical molecular formulae – that is, same number of atoms of each element – but distinct arrangements of atoms in space. Isomerism is existence or possibility of isomers.
...
ic form of
1,4-dioxin (or ''p''-dioxin).
Due to its
peroxide
In chemistry, peroxides are a group of compounds with the structure , where R = any element. The group in a peroxide is called the peroxide group or peroxo group. The nomenclature is somewhat variable.
The most common peroxide is hydrogen ...
-like characteristics, 1,2-dioxin is very unstable and has not been isolated. Calculations suggest that it would isomerize rapidly into but-2-enedial. Even
substituted
A substitution reaction (also known as single displacement reaction or single substitution reaction) is a chemical reaction during which one functional group in a chemical compound is replaced by another functional group. Substitution reactions ar ...
derivatives
The derivative of a function is the rate of change of the function's output relative to its input value.
Derivative may also refer to:
In mathematics and economics
*Brzozowski derivative in the theory of formal languages
*Formal derivative, an ...
are very labile, e.g. 1,4-diphenyl-2,3-benzodioxin. Indeed, in 1990, 3,6-bis(''p''-tolyl)-1,2-dioxin was wrongly accounted as the first stable derivative. It was subsequently shown that the initial compound was not a derivative of 1,2-dioxin, but a thermodynamically more stable
dione Dione may refer to:
Astronomy
*106 Dione, a large main belt asteroid
*Dione (moon), a moon of Saturn
*Helene (moon), a moon of Saturn sometimes referred to as "Dione B"
Mythology
*Dione (Titaness), a Titaness in Greek mythology
*Dione (mythology) ...
.
File:Dioxin isomers.svg, The isomers 1,2-dioxin (left) and 1,4-dioxin (right)
File:1,4-diphenyl-2,3-benzodioxin.svg, Structure of the transient 1,4-diphenyl- 2,3-benzodioxin
File:Revised structure 1,2-Dioxin.svg, Dioxin (1) and dione form (2)
References
Dioxins
Hypothetical chemical compounds
Antiaromatic compounds
{{Heterocyclic-stub