A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing


  • 4 years ago

Infrared spectroscopy help http://riodb01.ibase.aist.go.jp/sdbs/cgi-bin/IMG.cgi?imgdir=ir&fname=NIDA4406&sdbsno=1721 Can you identify the C=C bonds peak in this IR

  • This Question is Closed
  1. chmvijay
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yaa if C=C bond is asymmetric usualy it shows peak around 1650 Cm-1

  2. kociela
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    picture isn't showing up and gives forbiden banner, can be because of sdbs. (really distorted / shifted esteer spike get around that 1650?) other main pikes are 3100-3000 v(=C-H) and substitution is from 995-650 y(C=C-H) area. There is variation by substitution in those all, conjugated gives mainly ~1580-1640 and others above. double bond energy is generally lower (more stability) with more substituent and readings in the stable gives opposite so maybe something with conjugation and tightening the vibrating bonds (greater energy as in stable, higher cm^-1) ? can you upload that image separately ?

  3. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...


  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.