Pi bond

Pi bond

A pi bond (Greek: π) is a type of chemical bond that is characterized by the sharing of electrons between atoms in a molecule through p orbitals that are in contact through two areas of overlap. Pi bonds are usually weaker than sigma bonds.

Etymology[edit | edit source]

The term "pi bond" is derived from the Greek letter π, which is used in mathematics to represent a constant. In the context of chemistry, the term "pi bond" is used to describe a type of covalent bond that is formed by the overlap of p orbitals.

Formation[edit | edit source]

Pi bonds are formed when two atomic orbitals come together to form a molecular orbital that is symmetrical along the bond axis. The p orbitals that participate in pi bond formation are in a parallel orientation and must be unhybridized. The electrons in pi bonds are sometimes referred to as "pi electrons".

Properties[edit | edit source]

Pi bonds are generally weaker than sigma bonds due to the poor overlap of p orbitals. However, they are crucial in the formation of double and triple bonds in molecules. Pi bonds also play a significant role in the structures of organic molecules, such as alkenes and alkynes.

Related Terms[edit | edit source]

See also[edit | edit source]

Pi bond Resources
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