Difference between localized and delocalized chemical bond
Answers
Answered by
0
When we try to model the bonds that exist in a molecule, we can try doing so using bonds that exist only between two atoms. If the model we build is a good representation of the real molecule then we can be confident that the bond is localized. Sometimes, our localized bonds don't work and the real molecule has properties that do not match our model. Then we try different approaches. Take benzene.
A simple Lewis dot structure, where every pair of dots represents either a localized bond or a lone pair ( benzene has no lone pairs so they're all bonds in that model) shows the C-C bonds around the ring as double and then single single alternating. However, if we take a sample of benzene and do some spectroscopy on it, we find that all the carbon-carbon bond strengths are the same. So there cannot be alternating single-double bonds in the ring like Our Lewis did structure showed. The answer is that the Pi bonds do not exist as localized bonds that stay locked between two atoms. Instead, the real bonds cover the whole ring. They are delocalized. They are not local to a specific pair of atoms.
A simple Lewis dot structure, where every pair of dots represents either a localized bond or a lone pair ( benzene has no lone pairs so they're all bonds in that model) shows the C-C bonds around the ring as double and then single single alternating. However, if we take a sample of benzene and do some spectroscopy on it, we find that all the carbon-carbon bond strengths are the same. So there cannot be alternating single-double bonds in the ring like Our Lewis did structure showed. The answer is that the Pi bonds do not exist as localized bonds that stay locked between two atoms. Instead, the real bonds cover the whole ring. They are delocalized. They are not local to a specific pair of atoms.
Answered by
2
Localized and delocalized chemical bond
Explanation:
Chemical bonds are formed when two nuclei share a pair of electrons in the region confined between the two nuclei. This type of bond is called a localized chemical bond.
In a delocalised chemical bond, the electrons in a molecule/ion/solid metal that are not associated with a single atom or a covalent bond are shared. A molecule with delocalized chemical bonding is more stable than a molecule with localized chemical bonding. Example: Benzene
Similar questions