Chemical Forums

Please login or register.

Login with username, password and session length

Sponsored links

Pages: [1]   Go Down

Author Topic: C-O stretcing frequency.  (Read 551 times)

0 Members and 1 Guest are viewing this topic.

Eddzzz_2012

  • Regular Member
  • ***
  • Mole Snacks: +1/-2
  • Offline Offline
  • Posts: 20
C-O stretcing frequency.
« on: February 21, 2013, 02:22:40 AM »

Hi. I'm trying to determine whether the C-O stretching frequency will increase or decrease in energy if the M-CO bond was weakened. So:

Stronger M-CO pi-backbonding interaction corresponds to strongest backbonder to C-O ligand
Longest C-O bond length corresponds to lowest oxi state because of being a stronger backbonder
C-o Stretching frequency corresponds to longest C-O bond length
Therefore the C-O stretching frequency will if the M-CO bond was weakened.

Is this correct?
Logged

Schrödinger

  • Chemist
  • Sr. Member
  • *
  • Mole Snacks: +136/-98
  • Offline Offline
  • Gender: Male
  • Posts: 1149
Re: C-O stretcing frequency.
« Reply #1 on: February 21, 2013, 08:45:25 PM »

Therefore the C-O stretching frequency will if the M-CO bond was weakened.
Is this correct?

Is what correct?
Logged
"Destiny is not a matter of chance; but a matter of choice. It is not a thing to be waited for; it is a thing to be achieved."
- William Jennings Bryan

Enthalpy

  • Chemist
  • Full Member
  • *
  • Mole Snacks: +56/-27
  • Offline Offline
  • Posts: 803
Re: C-O stretcing frequency.
« Reply #2 on: February 24, 2013, 08:56:32 AM »

What about the stiffness of the M-C bond? We're speaking about mechanical vibrations, and C is lighter than O, so any stiff mass bound to C would decrease the frequency.

This is a question from me, not a suggestion.
Logged
Pages: [1]   Go Up
 

Mitch Andre Garcia's Chemical Forums 2003-Present.

Page created in 0.07 seconds with 23 queries.