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![[Post New]](/templates/default/images/icon_minipost_new.gif) 16 Jan 2008 18:41:23 IST
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It is a temporary effect and it involves the complete
transfer of electrons to one of the atom of a multiple
bond. This transfer depends upon the requirement of
the attacking reagent that is the polarisation of 
electron is influenced by the attacking reagent.In the
presence of inductive effect. If the group is a carbonyl
group then shift of  electrons is always towards the
oxygen as it is more electronegative than the carbon
atom.There can be + E effect and - E effect . If the
electrons of the bond that are transferred to that
atom of the double bond to which reagent gets finally
attached then effect is +E effect and if the e- of double
bond get attached to the other atom of the double bond
then it is - E effect.
Thats all i know.
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From J.R.R. Tolkien's 'The Lord of the Rings':
All that is gold does not glitter
Not all who wander are lost
The old that is strong does not wither,
Deep roots are not reached by frost.
From ashes a fire shall be woken
From shadows a light shall spring
Renewed shall be blade that's broken
The crown less again shall be king. |
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