Kekule formula
Noun: A Kekulé formula is a specific structural representation in organic chemistry. It depicts a closed chain, or ring, of six carbon atoms, with each carbon atom also bonded to hydrogen atoms. This formula is most famously used to represent the benzene molecule, showing alternating single and double bonds between the carbon atoms in a hexagonal ring.
The term is used to describe a classical, foundational model for representing the structure of aromatic compounds like benzene. * The Kekulé formula for benzene was a groundbreaking idea in the 19th century. * While useful for basic understanding, the Kekulé formula does not fully represent the molecule's true electron delocalization.
- The Kekulé formula is often contrasted with the modern concept of resonance to explain the stability and properties of benzene. It represents one of two contributing resonance structures.
- In historical context, the Kekulé formula resolved a major puzzle about benzene's molecular architecture and its carbon-to-hydrogen ratio.
- Kekulé structure: A synonymous term.
- Benzene ring: Refers to the core hexagonal structure itself, which the Kekulé formula aims to depict.
- Resonance hybrid: The modern model that supersedes the static double-bond depiction of the Kekulé formula.
- Kekulé structure
- Classical benzene structure
This is a specialized scientific term with a single, specific meaning in chemistry. It does not have other common definitions.
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a closed chain of 6 carbon atoms with hydrogen atoms attached
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