Lecture 6 Vibrational spectra of complex molecules.

Slides:

Advertisements

Similar presentations

Astronomy Notes to Accompany the Text Astronomy Today, Chaisson, McMillan Jim Mims.

Advertisements

Phase Change of Water Solids Liquids & Gasses By Mr. King.

Understanding Complex Spectral Signatures of Embedded Excess Protons in Molecular Scaffolds Andrew F. DeBlase Advisor: Mark A. Johnson 68 th Internatinal.

A Deperturbation Method to Aid in the Interpretation of Infrared Isotopic Spectra G. Garcia and C. M. L. Rittby Texas Christian University Fort Worth,

Is this your room/ Then you already know about entropy.

Raman Spectroscopy Laser 4880 Å. Raman Spectroscopy.

Lecture 6. FT-IR and Raman Spectroscopy. FT-IR Analytical infrared studies are based on the absorption or reflection of the electromagnetic radiation.

Lecture 30 Electronic Spectra of Coordination Compounds 1) Jahn-Teller effect Octahedral complexes can be a subject to tetragonal or trigonal distortions.

Raman Spectroscopy Raman effect is a 2-photon scattering process

Infrared Spectroscopy Near Infrared: 770 to 2500 nm Near Infrared: 770 to 2500 nm 12,900 to 4000 cm -1 Mid Infrared: 2500 to 50,000 nm (2.5 to 50  m)

Raman Spectroscopy Laser 4880 Å. Raman Spectroscopy.

Physics for Scientists and Engineers, 6e Chapter 43 - Molecules and Solids.

Rotational Spectra Simplest Case: Diatomic or Linear Polyatomic molecule Rigid Rotor Model: Two nuclei joined by a weightless rod J = Rotational quantum.

Dr. Jie ZouPHY Chapter 43 Molecules and Solids.

VIBRATIONAL OVERTONE SPECTRA OF C 2 H 6 AND C 2 H 4 IN CRYOGENIC LIQUIDS Helena Diez-y-Riega and Carlos Manzanares Baylor University 2009.

Laser Physics I Dr. Salah Hassab Elnaby Lecture(2)

Lecture 3 INFRARED SPECTROMETRY

Spectral Regions and Transitions

 Covalent  Carbon always forms 4 bonds  Can form both polar and non-polar compounds  Being organic means you have carbon  Non-electrolytes  Molecular.

Chapter 4 Spectroscopy Chapter 4 opener. Spectroscopy is a powerful observational technique enabling scientists to infer the nature of matter by the way.

Drs. Wei Tian & Yanhui Chen Sep-Dec Main Content Introduction of Nuclear Magnetic Resonance (NMR) Analysis One Dimensional NMRs 1 H NMR 13 C NMR.

Water Phase Change Graph

Spectroscopic Analysis Part 4 – Molecular Energy Levels and IR Spectroscopy Chulalongkorn University, Bangkok, Thailand January 2012 Dr Ron Beckett Water.

INFRARED SPECTROSCOPIC STUDY ON FERMI RESONANCE OF THE EXCESS PROTON VIBRATION IN BINARY CLUSTERS Ryunosuke SHISHIDO, Asuka FUJII Department of Chemistry,

Infrared Spectroscopy

Rotation and vibration spectra. Rotational States Molecular spectroscopy: We can learn about molecules by studying how molecules absorb, emit, and scatter.

Important concepts in IR spectroscopy

THE KINETIC MOLECULAR THEORY OF MATTER. 1. ALL MATTER IS MADE UP OF ATOMS  Solids are joined together tightly and maintain a constant shape and volume.

The Kinetic Molecular Theory

Phase Changes “It’s just a phase”. States of Matter Solid, liquid and gas (plasma) Changes between states are called “phase changes” Caused by a change.

Aromatics Prominent (strong) features: C-H stretch

Lecture 29 Point-group symmetry II (c) So Hirata, Department of Chemistry, University of Illinois at Urbana-Champaign. This material has been developed.

© 2008 Pearson Education, Inc., publishing as Pearson Addison-Wesley This work is protected by U.S. copyright laws and is provided solely for the use of.

STATES OF MATTER 1. SOLID: a form of matter that has a rigid, fixed volume and shape. Solids are generally arranged with unique symmetrical regularity.

Ch. 2 - Matter I. States of Matter  Kinetic Molecular Theory  States of Matter.

Kinetic Molecular Theory Part #2. Rule #1 All matter is made up of particles (molecules) that are constantly moving. (Movement like vibration in solids,

Physics “Advanced Electronic Structure” Lecture 1. Theoretical Background Contents: 1. Historical Overview. 2. Basic Equations for Interacting Electrons.

Undergrad Students Michael Friedman Jesse Hopkins Brian Bresslauer

Chapter 4 Spectroscopy The beautiful visible spectrum of the star Procyon is shown here from red to blue, interrupted by hundreds of dark lines caused.

Kinetic molecular theory Page 29 of INB EQ How are kinetic energy and thermal energy in a substance related?

Heating and Cooling Curves

Thermal expansion of solid, liquid and gas

Light’s Particle-like Properties Energy is quantized into discrete bundles of energy Absorption spectra wavelengths are related to specific energy jumps.

EXAMPLE THE SPECTRUM OF HCl SHOWS A VERY INTENSE ABSORPTION BAND AT 2886 cm -1 AND A WEAKER BAND AT 5668 cm -1. CALCULATE x e, ṽ o, THE FORCE CONSTANT.

Decoding Dynamical Information from Vibrational Spectra.

Lecture 8: Volume Interactions Thursday, 28 January 2010 Ch 1.8 Major spectral features of minerals (p. xiii-xv), from Infrared.

Conformational effects on resolved emission spectra of floppy aromatic molecules Sujit S. Panja Department of chemistry Indian Institute of Technology.

New Developments in Molecular Orbital Theory 김대겸.

Lineshape analysis of CH3F-(ortho-H2)n absorption spectra in 3000 cm-1 region in solid para-H2 Yuki Miyamoto Graduate School of Natural Science and Technology,

sound pitch wave amplitude frequency volume resonance wavelength

69th annual international symposium on molecular spectroscopy

Lecture 8: Volume Interactions

Molecular Vibrations and IR Spectroscopy

E. D. Pillai, J. Velasquez, P.D. Carnegie, M. A. Duncan

Molecular Vibrations and IR Spectroscopy

INFRARED SPECTROSCOPY Dr. R. P. Chavan Head, Department of Chemistry

Fundamental aspects of adsorption on individual carbon nanotubes

Single molecule spectroscopy: towards precision measurements on CaH+

Lecture 8: Volume Interactions

Evaluating transition matrix elements using character tables

Vibrational spectra of complex molecules

Instrumental Analysis

Molecular Vibrations and IR Spectroscopy

5.4 Learning from Light Our goals for learning

Lecture 8: Volume Interactions

Introduction During the last years the use of Fourier Transform Infrared spectroscopy (FTIR) to determine the structure of biological macromolecules.

Rotational Energy Levels for rigid rotor: Where Rotational Spectra of Rigid Diatomic molecule. BY G JANAKIRAMAN EGS A&S COLLAGE

Presentation transcript:

Lecture 6 Vibrational spectra of complex molecules

R-Q-P

Gas Solid matrix Sharp peaks!

Liquid acetone Acetone in a solid matrix (*- admixtures) Sharp peaks!

Fermi Resonance Overtone: weak (forbiden) Resonance line: much stronger, shifted, and allowed Two conditions must be satisfied for the occurrence of Fermi Resonance: (1) the two vibrational states of a molecule transform according to the same irreducible representation of the molecular point group. (2) The energies of the transitions (accidentally) have almost the same energy.

Fermi Resonance Overtone Fundamental band