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Names | |||
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IUPAC name
(1E,3Z,5E,7Z,9E,11E,13Z)-cyclotetradeca-1,3,5,7,9,11,13-heptaene
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Other names
[14]Annulene
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Identifiers | |||
CAS Number
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3D model (JSmol)
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ChEBI |
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ChemSpider |
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PubChem CID
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CompTox Dashboard (EPA)
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InChI
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SMILES
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Properties | |||
Chemical formula
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C14H14 | ||
Molar mass | 182.266 g·mol−1 | ||
Appearance | dark-red needle-like crytals | ||
Solubility in water
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Insoluble | ||
Solubility in benzene | Soluble | ||
Structure[1] | |||
Crystal structure
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monoclinic | ||
Space group
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P21/c, No. 14 | ||
Lattice constant
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a = 8.640 Å, b = 4.376 Å, c = 14.997 Å α = 90°, β = 106°, γ = 90°
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Formula units (Z)
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2 molecules per cell | ||
Hazards | |||
Occupational safety and health (OHS/OSH): | |||
Main hazards
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Flammable, reactive | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
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Cyclotetradecaheptaene, often referred to as [14]annulene, is a hydrocarbon with molecular formula C14H14, which played an important role in the development of criteria (Hückel's rule) for aromaticity, a stabilizing property of central importance in physical organic chemistry. It forms dark-red needle-like crystals.[1]