closed-chain
Học thuậtThân thiện
Definition
- Adjective:
- Having atoms linked by bonds represented in circular or triangular form: This term describes a molecular structure where the atoms are connected in a ring or cyclic arrangement, rather than in a straight or branched chain.
Usage
- The term "closed-chain" is primarily used in the field of chemistry to describe the structure of organic compounds.
- It is often used attributively before a noun (e.g., "closed-chain compound").
- It is synonymous with the term "cyclic" in many chemical contexts.
Examples
- Adjective:
- Benzene is a classic example of a closed-chain hydrocarbon.
- The chemist synthesized a new closed-chain molecule with unique properties.
- Cyclohexane and cyclopropane are both closed-chain alkanes.
Advanced Usage
- "Closed-chain structure": A specific term referring to the ring-like arrangement of atoms in a molecule.
- The stability of the compound is due to its closed-chain structure.
- In biochemistry, the term can describe cyclic forms of sugars or other biomolecules.
- In an aqueous solution, glucose can exist in both open-chain and closed-chain forms.
Variants and Related Words
- Cyclic (adj): Having the structure of a ring; often used interchangeably with "closed-chain" in chemistry.
- Cyclic compounds are a major class of organic molecules.
- Ring compound (n): Another common term for a closed-chain molecule.
- Many pharmaceuticals are based on complex ring compounds.
- Open-chain (adj): The opposite structural form, where atoms are connected in a straight or branched chain, not a ring.
- Butane is an example of an open-chain hydrocarbon.
Synonyms
- Cyclic: Forming or having a ring structure.
- Ring-shaped: Having the form of a ring (more general, less technical).
- Circular (in specific structural contexts): Arranged in a circle.
Antonyms
- Open-chain: Having atoms linked in a chain that is not closed into a ring.
- Acyclic: Not cyclic; having an open-chain structure.
- Linear (in specific contexts): Arranged in a straight line.
Adjective
- having atoms linked by bonds represented in circular or triangular form