The condensed formula for Propynal is HCCCHO.
Propynal, also known as propargyl aldehyde, is an organic compound characterized by its unique combination of functional groups. Its structure features a three-carbon chain containing both a carbon-carbon triple bond and an aldehyde group.
Understanding Propynal's Structure
To arrive at the condensed formula, we can break down the name "Propynal":
- Prop-: This prefix indicates a backbone of three carbon atoms.
- -yn-: This infix signifies the presence of a carbon-carbon triple bond within the chain.
- -al: This suffix denotes an aldehyde functional group, which is a carbonyl group (C=O) bonded to a hydrogen atom and an R-group, typically found at the end of a carbon chain (-CHO).
Combining these elements, the structure of Propynal can be visualized as:
- A three-carbon chain.
- An aldehyde group (-CHO) at one end.
- A triple bond between the remaining two carbons.
This leads to the structural representation: HC≡C-CHO. When condensed, this becomes HCCCHO. This representation clearly shows the terminal hydrogen atom, followed by the two carbons forming the triple bond, and finally the carbon of the aldehyde group, which is bonded to an oxygen and a hydrogen.
Key Properties of Propynal
Propynal is a relatively simple molecule, and its properties are consistent with its structural features. Its molecular formula, as determined by elemental composition, is C3H2O.
| Property | Value |
|---|---|
| Molecular Formula | C3H2O |
| Average Mass | 54.048 g/mol |
| Monoisotopic Mass | 54.010565 g/mol |
| ChemSpider ID | 11721 |
The condensed formula HCCCHO accurately reflects this molecular composition:
- C: 3 carbons
- H: 1 hydrogen (from HC) + 1 hydrogen (from CHO) = 2 hydrogens
- O: 1 oxygen (from CHO)
Propynal is known to be a highly reactive compound due to the presence of both the aldehyde group and the triple bond, making it useful in various organic syntheses.
