Annulene is a term that is commonly used in the field of organic chemistry. It is a type of organic compound that is composed of a cyclic structure with alternating double and single bonds. This article will provide a comprehensive overview of the definition, meaning, and origin of annulene.
Definitions
Annulene is a type of cyclic organic compound that has alternating double and single bonds. It is also known as a benzenoid compound because it has a benzene ring in its structure. The term annulene is derived from the Latin word “annulus,” which means “ring.”
Origin
The concept of annulene was first introduced by the German chemist Heinrich Hopff in 1925. He proposed the idea of a cyclic hydrocarbon that had alternating double and single bonds. Later, in 1933, the American chemist Robert Robinson synthesized the first annulene compound, which was a 10-carbon ring with alternating double and single bonds.
Meaning in different dictionaries
According to the Merriam-Webster dictionary, annulene is defined as “any of a class of cyclic hydrocarbons having alternating double and single bonds in the ring.” The Oxford English Dictionary defines annulene as “a cyclic hydrocarbon with alternating double and single bonds.”
Associations
Annulene is commonly associated with the field of organic chemistry. It is used in the synthesis of other organic compounds, such as polycyclic aromatic hydrocarbons (PAHs). PAHs are a group of organic compounds that are found in fossil fuels and are known to be carcinogenic.
Synonyms
Some synonyms of annulene include cyclohexadiene, benzene ring, and cyclic hydrocarbon.
Antonyms
There are no specific antonyms for annulene as it is a specific type of organic compound.
The same root words
The root word of annulene is “annulus,” which means “ring.” Other words that have the same root word include annular, annulate, and annuli.
Example Sentences
- The synthesis of annulene compounds is an important area of research in organic chemistry.
- The benzene ring in annulene is responsible for its unique chemical properties.
- The alternating double and single bonds in annulene make it a highly reactive compound.
- The presence of annulene compounds in fossil fuels is a cause for concern due to their carcinogenic properties.