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Triple bond

physical science Maturity 11-13 Next article →

Atoms use bonds to stick together. A triple bond is a very strong way to join two atoms. Most bonds use only two electrons to hold atoms. A triple bond uses six bonding electrons instead. This makes the bond order three. This bond is much stronger than single or double bonds.

Acetylene-CRC-IR-dimensions-2D
Acetylene-CRC-IR-dimensions-2D

Scientists draw this bond using three parallel lines. It is a very important part of how matter works.

We can look at how this works through orbital hybridization. Let us look at a molecule called acetylene. Each carbon atom has two sp-orbitals. These sp-orbitals are linear with 180 degree angles. They sit on the x-axis. Two p-orbitals sit on the y and z axes. The sp-orbitals overlap to make one sigma bond. Then, the p-orbitals overlap to make two pi bonds.

Carbon monoxide 2D
Carbon monoxide 2D

This creates the strong triple bond.

Many different things use these strong bonds. The most common triple bond is in nitrogen gas. The second most common is between carbon atoms. These carbon bonds are found in things called alkynes. You can also find them in cyanides and isocyanides. Some small molecules like carbon monoxide use them too.

Cyanogen-2D-dimensions
Cyanogen-2D-dimensions

Even phosphorus can form a triple bond in a molecule called diphosphorus.

Scientists have studied many types of these bonds. Some metals can form triple bonds between them. For example, tungsten and molybdenum can do this. A known example is hexa(tert-butoxy)ditungsten(III). In this metal bond, the distance is about 233 pm. This tungsten bond is very interesting to researchers. It reacts with alkynes to make new compounds.

W2(OC(CH3)3)6
W2(OC(CH3)3)6

This shows how much science can learn from atoms.

Triple bonds help us understand the world around us. Nitrogen gas is all around us in the air. Carbon bonds help build many organic things. Even the way metals stick together follows these rules. You can see these bonds in many different places. They are a key part of chemistry.

Dehydrobenzoannulene
Dehydrobenzoannulene

Learning about them helps us see how small parts build big things.

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🖼️ Images & Media (5)
File:Dehydrobenzoannulene.jpg
Dehydrobenzoannulene.jpg
File:Acetylene-CRC-IR-dimensions-2D.svg
Acetylene-CRC-IR-dimensions-2D.svg
File:Cyanogen-2D-dimensions.svg
Cyanogen-2D-dimensions.svg
File:Carbon monoxide 2D.svg
Carbon monoxide 2D.svg
File:W2(OC(CH3)3)6.svg
W2(OC(CH3)3)6.svg
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