Is a triple bond always represented in 180° in bond line notations?

Answer 1

Elias Aguila

Yes, a triple bond is almost always represented as a straight line in bond line notation.

Each of the alkyne carbon atoms is sp hybridized, with bond angles of 180°.

The two alkyne C atoms and the atoms directly attached to them are all in a straight line.

You can see this see this in the bond line structure for hex-3-yne.

The only exceptions are when the C≡C bond is part of a ring structure and the bonds have no choice except to be bent.

Such molecules have bond angle strain. This make them less stable than acyclic alkynes.

One example is cyclooctyne.

Another is the highly reactive benzyne molecule.

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Answer 2

Brooklyn Barber

Yes, a triple bond is typically represented as a straight line in bond line notation, which implies a bond angle of 180 degrees.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.