Related Experiment Video
Updated: May 15, 2026

Ultrafast Time-resolved Near-IR Stimulated Raman Measurements of Functional π-conjugate Systems
Published on: February 10, 2020
[Low-frequency Raman spectra in water and in weak aqueous solutions. Spatial inhomogeneity in hydrogen peroxide
Abstract:
We describe some examples of the study of intermolecular interactions in water and in weak aqueous solutions using the low-frequency Raman spectra. An improved method of determining parameters of the dynamic susceptibility from the Raman spectra is described. The nine spectral parameters (the intensity, the frequency and the width of the two oscillators, the intensity and the width of the relaxation motion and the intensity of fluorescent background) completely describe the spectrum in the frequency range of 4 to 320 cm(-1). For hydrogen peroxide the dependences of these parameters on the concentration is shown. Concentration dependence of the spectral parameters of the hydrogen peroxide solution in water indicates a change in the structure of the molecular bonds in water near a peroxide molecule at a distance up to 0.7-0.9 nm.The effect of the exciting laser radiation on the parameters of the spectra in the registration of the Raman spectra of water is shown.
More Related Videos
Related Concept Videos
IR Spectrum Peak Broadening: Hydrogen Bonding
However, the extent of hydrogen bonding influences the observed stretching frequency and band broadening. Intermolecular or intramolecular hydrogen bonding...
Raman Spectroscopy: Overview
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and the...
¹H NMR of Labile Protons: Temporal Resolution
The –OH proton in alcohols typically appears in the range of δ 2 to 5 ppm but can vary depending on the specific...
¹H NMR of Labile Protons: Deuterium (²H) Substitution
Raman Spectroscopy Instrumentation: Overview
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
IR Frequency Region: X–H Stretching

