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| Name
| Condensed Structural Formula
| Structure
| Ethyne
| HC CH
| 2 carbon atoms
| Propyne
| HCCCH3
| 3 carbon atoms
| 1-butyne or but-1-yne
| HCCCH2CH3
| Triple bond begins at carbon 1
| 2-butyne or but-2-yne
| CH3CCCH3
| Triple bond begins at carbon 1
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Structural diagrams of complex alkynes shown in the "Examples" section:
- 3,4,5-trimethyl-1-heptyne:
- 3,4,5-trimethyl-1-heptyne: (3D Structure)
- 2-pentyne: (3D Structure)
Note: Condensed structural formula just means the structural formula showing the carbon bonding and hydrocarbon groups. The example used for nomenclature (in your brochure) is a condensed structual formula. Also used in Question #1 of Self Evaluation.
To write the chemical formula for an alkyne, given it's condensed structural formula, simply count the number of carbons and the number of hydrogens. Then write C and H and write the counted numbers as the respective subscripts.
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