how can u say that conjugation is not present in propene?
Simply here it does nt possess alternate double bond system…!
but it has double bond between 1st and 2nd C-atom and single bond between the 3rd and 2nd C atom.Also according to the definition of the conjugation,there should be an atom which is directly bonded to another atom which is doubly bonded with any other atom.And in propene one C atom is attached to a C atom which is doubly bonded with another atom.
Propene shows hyperconjugation and due to this hyperconjugation, it doesn’t show any bond resonance structures!
Any molecule where π electrons (that is, “electrons in p orbitals”) can be shared over more than 3 or more atoms can show conjuagtion!
Ok…so you mean to say that for showing conjugation,there should be two double bonds and one single bond at alternate positions…??
Sorry for late response–
These are the conjugated systems…!
Thank you very much…