eight-membered
Definition
- Adjective:
- Of a chemical compound having a ring with eight members: Used specifically in chemistry to describe a molecular structure where atoms are connected to form a single, closed ring consisting of exactly eight atoms.
Usage Examples
- Adjective:
- The chemist synthesized a new eight-membered carbon ring compound.
- Cyclooctane is a simple example of an eight-membered hydrocarbon.
Advanced Usage
- The term is primarily used in technical, scientific writing and discourse within organic chemistry to specify ring size, which is a fundamental property influencing a molecule's stability and reactivity.
- It is often part of a systematic name, such as "eight-membered lactone" or "eight-membered heterocycle," where "heterocycle" indicates the ring contains atoms of different elements.
Variants and Related Words
- Eight-membered ring (noun phrase): The specific ring structure itself.
- The reaction proceeds through the formation of an unstable eight-membered ring.
- Cyclooctane (noun): A specific compound that is an eight-membered ring consisting entirely of carbon and hydrogen atoms.
Synonyms
- Octatomic ring: A less common synonym emphasizing the ring contains eight atoms.
- 8-membered: A numerical abbreviation used in diagrams and informal notes.
Notes on Meaning
- The term is highly specific and not used in everyday language. It is a descriptor of structure, not of function or property.
- The "members" refer to the atoms that constitute the ring backbone. The ring can be composed of carbon atoms only (carbocyclic) or include other atoms like nitrogen or oxygen (heterocyclic).
Adjective
-
of a chemical compound having a ring with eight members
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