Payal posted an Question
January 27, 2021 • 19:06 pm 30 points
  • IIT JAM
  • Chemistry (CY)

Which one is more basic?

Which one is more basic? .....................................

3 Answer(s) Answer Now
  • 0 Likes
  • 3 Comments
  • 0 Shares
  • Suman Kumar best-answer

    option B is correct. Due to ortho effect in B lone pair of nitrogen ring me delocalization nahi hoga so available for donation

  • comment-profile-img>
    Priyanshu kumar Best Answer

    B is more basic than A In case of A its dialkyl derivatives the NMe2 group is coplanar with benzene ring.  So p-electron (lone pair) on N atom and pi orbitals are remain in the same plane. For this the p-electron on N-atom can delocalized via pi orbital in the benzene ring and less available at nitrogen atom and hence less basic. In case of B  the methyl group in ortho position of the benzene ring , the NMe2 group can not remain in the same plane. That is why the p-electron on N-atom cannot delocalized through pi orbital (due to steric inhibition of resonance). It is localized at nitrogen atom Thus,more basic

    eduncle-logo-app

    how to know where sip and sir effects operate

    eduncle-logo-app

    https://youtu.be/SIA5uh743r8 check this video

whatsapp-btn

Do You Want Better RANK in Your Exam?

Start Your Preparations with Eduncle’s FREE Study Material

  • Updated Syllabus, Paper Pattern & Full Exam Details
  • Sample Theory of Most Important Topic
  • Model Test Paper with Detailed Solutions
  • Last 5 Years Question Papers & Answers