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]
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]
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]
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]
See also[edit]
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Ethylene 3D structure
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Pi bond illustration
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Ethane staggered conformation
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Ethylene dimensions
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Acetylene dimensions
