Understanding FTIR Peaks of PO4 Compounds

  • Thread starter Thread starter pink diamond
  • Start date Start date
  • Tags Tags
    Compounds Ftir
Click For Summary
SUMMARY

The discussion focuses on the interpretation of FTIR (Fourier Transform Infrared Spectroscopy) peaks for PO4 (phosphate) compounds. It establishes that multiple peaks at different wavelengths arise from various vibrational modes of the molecule, including stretching and bending vibrations. Specifically, the modes v1, v3, and v4 correspond to distinct types of molecular vibrations, such as symmetric stretching and asymmetric stretching. Understanding these peaks is crucial for accurately identifying and analyzing phosphate compounds in various applications.

PREREQUISITES
  • Basic knowledge of FTIR spectroscopy principles
  • Understanding of molecular vibrations and their classifications
  • Familiarity with the structure of phosphate compounds
  • Experience with interpreting IR spectra
NEXT STEPS
  • Research the specific vibrational modes of PO4 compounds in FTIR analysis
  • Learn about the classification of molecular vibrations: stretching, bending, rocking, and wagging
  • Explore advanced FTIR techniques for analyzing complex mixtures
  • Study the impact of molecular structure on FTIR peak patterns
USEFUL FOR

Chemists, materials scientists, and researchers involved in spectroscopy or the analysis of phosphate compounds will benefit from this discussion.

pink diamond
Messages
3
Reaction score
0
why on ftir graph there are several peaks for the same compound but at different wavelengths?
what causes the different modes of vibration for the same compound (PO4), what causes the v1 ,v3,v4 for PO4... help me please:frown:
upload_2017-4-14_12-59-58.png
 

Attachments

  • upload_2017-4-14_12-45-21.png
    upload_2017-4-14_12-45-21.png
    10.8 KB · Views: 635
  • upload_2017-4-14_12-52-5.png
    upload_2017-4-14_12-52-5.png
    10.8 KB · Views: 667
Engineering news on Phys.org
An IR spectrum is a molecule's fingerprint. Every unique compound will have its own IR spectrum. The various peaks depend on the individual bonds in the molecule. Then subdivide the number of unique bonds into stretching modes, symmetric stretching, asymmetric stretching, rocking, wagging, etc. Even simple molecules can have busy IR spectra.
 

Similar threads

Chemistry Why Do Sulfurous Compounds Show Different Peaks in X-ray Absorption Spectra?
  • · Replies 1 ·
Replies
1
Views
2K
IR Absorption of Compounds: Why the 3300 cm-1 Peak?
  • · Replies 1 ·
Replies
1
Views
3K
High School Do Electrons Get Excited and De-Excited Equally in Colored Compounds?
  • · Replies 2 ·
Replies
2
Views
2K
Electronic transition in organic compounds
  • · Replies 6 ·
Replies
6
Views
3K
Molecular vs ionics compounds, H20
  • · Replies 6 ·
Replies
6
Views
12K
Graduate Why Are the Peaks at Δ = 0 and Δ = ω_m Equally High?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Vibrations in a bow-tie cavity
  • · Replies 16 ·
Replies
16
Views
3K
Graduate De Broglie Wavelength - Compound Particles, Particle Systems
  • · Replies 14 ·
Replies
14
Views
2K
A novel compound epicyclic gear system I can't seem to understand
  • · Replies 1 ·
Replies
1
Views
2K
Naming a Compound: Understanding C(CH3)3 and Its Naming Conventions
  • · Replies 2 ·
Replies
2
Views
4K