11.1: Introduction to Alkynes
- Page ID
- 28230
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The simplest alkyne—a hydrocarbon with carbon-to-carbon triple bond—has the molecular formula C2H2 and is known by its common name—acetylene. Its structure is H–C≡C–H.
Terminal Alkyne: Internal Alkyne:
3-chloro-1-propyne 4,4-dichloro-2-pentyne
Bonding and Hybridization
| Bond | Name | Location | Overlap |
| Bond 1 | s (? bond) bond | Formed between 2 sp orbitals of carbon and hydrogen atoms | End-on overlap |
| Bond 2 | S (? bond) bond | Formed between the 2 sp orbital of 2 unsaturated Carbon atoms. | End-on overlap |
| Bond 3 | p-bonds (? bonds) | Formed between the 2 p-orbitals among the carbon atoms | Side-on overlap |
| Orbital | Name | Location |
| Orbital 1 | sp hybrid orbitals | Formed in the linear structure model of carbon atom |
| Orbital 2 | p-orbitals | Formed on each carbon |
Contributors
Jim Clark (Chemguide.co.uk)