Cyclotetradecaheptaene
Chemical compound / From Wikipedia, the free encyclopedia
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]
Quick Facts Names, Identifiers ...
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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 | |||
Other names
[14]Annulene | |||
Identifiers | |||
3D model (JSmol) |
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PubChem CID |
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Properties | |||
C14H14 | |||
Molar mass | 182.266 g·mol−1 | ||
Appearance | dark-red needle-like crytals | ||
Insoluble | |||
Solubility in benzene | Soluble | ||
Structure[1] | |||
monoclinic | |||
P21/c, No. 14 | |||
a = 8.640 Å, b = 4.376 Å, c = 14.997 Å α = 90°, β = 106°, γ = 90° | |||
Formula units (Z) |
2 molecules per cell | ||
Hazards | |||
Occupational safety and health (OHS/OSH): | |||
Main hazards |
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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