Benzene Delocalisation Stability
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Bonding in benzene
H
H C H
C C
C C H
6 electrons in a delocalised π bond
C
H
above and below the plane of the atoms
H
Original slide prepared for the
Energy diagram Enthalpy (kJ mol-1)
-152 kJmol-1 delocalisation energy + 3H2 + 2H2 -360 theoretical
+ H2 -120
-240 + H2 value -120
+ 3H2
-208 real value
Original slide prepared for the
References Steve Lewis for the Royal Society of Chemistry
Original slide prepared for the
H
H C H
C C
C C H
6 electrons in a delocalised π bond
C
H
above and below the plane of the atoms
H
Original slide prepared for the
Energy diagram Enthalpy (kJ mol-1)
-152 kJmol-1 delocalisation energy + 3H2 + 2H2 -360 theoretical
+ H2 -120
-240 + H2 value -120
+ 3H2
-208 real value
Original slide prepared for the
References Steve Lewis for the Royal Society of Chemistry
Original slide prepared for the
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