1Alternate positions of molecule having pi bond /charge/ +charge/ odd electron/ lone pair of electrons are known as conjugate positions .
Compounds having atleast 2 conjugate positions are said to be conjugated compounds.
What is a conjugate system?(conjugation) how can we identify conjugate system/.. what points should be kept in mind while identifying conjugate systems?
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62Conditions:
- charge/ +charge/ free radical/ lone pair in conjugation with pi bond
pi in conjugation with sigma bond
1A chemically conjugated system is a system of atoms covalently bonded with alternating single and multiple (e.g. double) bonds (e.g., C=C-C=C-C) in a molecule of an organic compound.
This system results in a general delocalization of the electrons across all of the adjacent parallel aligned p-orbitals of the atoms, which increases stability and thereby lowers the overall energy of the molecule.
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1what does it mean when it is said that system is conjugated?.. does it mean that... delocalisation of pi electrons can take place????
62system is conjugated means it has alternate structure..
which u can say leaving one atome..
1it means at its alternate positions it has pi bond /charge/ +charge/ odd electron/ lone pair separated by a sigma bond.
ex
C=C-C=C-C
1 3
here at 1 and 3 rd positions we have alternate pi bond.
These pi bond are in conjugation.
The pi electrons delocalize themselves to give the next conjugated structure.
62This is conjugate system.. bcos there are 2 alaternate pi bonds.. i mean separated by one sigma bond..
It is not necessary that the ring is completed!
If the ring is completed, then it will be in resonance.
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but there are continuously two sigma bonds (indicated by arrows)....
1ohk so as here there are more than 2 conjuate positions... this system is a conjugate system!
62yes exactly :)
basically if the electrons can move and form (*newer) structures.