Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Millimeter-Wave Absorption Free Jet Spectrum, Barriers to Internal Rotation, and Torsional Relaxation in

Melandri1, Maris, Favero

  • 1Dipartimento di Chimica "G. Ciamician" dell'Universita, Via Selmi 2, Bologna, I-40126, Italy;

Journal of Molecular Spectroscopy
|December 17, 1997
PubMed
Summary

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Hospital Reports: Philadelphia Dispensary.

The Southern medical record·2022
Same author

Free-Jet Rotational Spectrum and ab Initio Calculations of Formanilide.

Journal of molecular spectroscopy·2001
Same author

Detection of Herpes Virus (KSHV) DNA Sequences in Brazilian Patients With AIDS-Associated Kaposi's sarcoma.

The Brazilian journal of infectious diseases : an official publication of the Brazilian Society of Infectious Diseases·2000
Same author

Conformational equilibrium and potential energy surface of 1-fluorobutane by microwave spectroscopy and Ab initio calculations

Chemistry (Weinheim an der Bergstrasse, Germany)·2000
Same author

Study of phonon dispersion in silicon and germanium at long wavelengths using picosecond ultrasonics

Physical review letters·2000
Same author

Analysis of solid-supported oligonucleotides by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry

Rapid communications in mass spectrometry : RCM·2000

This study investigates the rotational spectrum of p-anisaldehyde, detailing its conformers and internal rotation barriers. The research enhances understanding of molecular structure and vibrational states through advanced spectral analysis.

Area of Science:

  • Molecular Spectroscopy
  • Quantum Chemistry
  • Physical Chemistry

Background:

  • p-Anisaldehyde exists in anti and syn conformers.
  • Understanding molecular dynamics requires detailed spectral analysis.

Purpose of the Study:

  • Investigate the rotational spectrum of p-anisaldehyde.
  • Determine centrifugal distortion constants and internal rotation barriers.
  • Analyze vibrational satellite bands and torsional states.

Main Methods:

  • Rotational spectroscopy in a supersonic expansion (60-78 GHz).
  • Analysis of spectral transitions up to J = 57.
  • Application of a two-dimensional flexible model for torsional analysis.

Main Results:

Related Experiment Videos

  • Complete sets of fourth-order centrifugal distortion constants determined for both conformers.
  • Methyl group internal rotation barriers obtained.
  • Vibrational satellites assigned to the first excited methoxy torsional state.
  • Jet conditions optimized to enhance satellite intensities.

Conclusions:

  • A two-dimensional flexible model effectively describes torsional motions.
  • Conformational mixing is unlikely to explain observed spectral bands.
  • Internal vibrational relaxation is a more plausible explanation for spectral anomalies.