4/15/11
Delocalisation of electrons
i read one article that said "Delocalisation is when electrons are not associated with one atom but are spread over several atoms.So the electrons are not directly bonded with any atoms but effectively 'float' above and below the molecule in electron clouds".This means In the case of hydrocarbons, delocalisation occurs in Benzene rings, where a hexagon of six carbon atoms has delocalised electrons spread over the whole ring.For metals, electrons are delocalised over the whole crystal structure and outer electrons of the metal atoms are shared in an electron sea, and are not confined to particular atoms.
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This makes the benzene more unstable and which is the main molecule in the organic chemistry responsible for many chian reactions.
ReplyDeleteThe electrons in the clouds above and below the ring can be seen as bonding with all carbon atoms simultaneously. This would result in overall bonding being somewhere between single and double bonds in terms strength and in the bond length being between those of single and double C-C bonds.
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