Octet / Functional Groups
Alkyne
Alkyne (CₙH₂ₙ₋₂) - hydrocarbons. Unsaturated hydrocarbons with C≡C triple bond. Terminal alkynes are weakly acidic.
Hydrocarbons
Functional Group details
Name
Alkyne
Category
Hydrocarbons
Smiles
CC#CC
General Formula
CₙH₂ₙ₋₂
Description
Unsaturated hydrocarbons with C≡C triple bond. Terminal alkynes are weakly acidic.
Properties
- Polarity
slightly polar
- H Bond Donor
No
- H Bond Acceptor
No
- Boiling Point Trend
Slightly higher than corresponding alkenes
Spectroscopy
- Ir Peaks
2100-2260 cm⁻¹ (C≡C stretch)
3300 cm⁻¹ (≡C-H stretch, terminal)
- H Nmr Shifts
1.8-3.0 ppm (terminal ≡C-H)
- C Nmr Shifts
65-90 ppm
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