The aim of the course is to provide students with the basis for the use of physical techniques, in particular spectroscopic, for the characterization of the molecules. The focus is on the interaction between external magnetic fields and magnetic moments (electronic or nuclear) in the sample.
Course Prerequisites
Basic chemical knowledge, obtainable with a three-year scientific degree. is required.
Teaching Methods
There will be practical exercitations on the instruments for some techniques. Recorded lessons will be made available on G-Drive.
Assessment Methods
The examination, oral, consists of applying the techniques to the study of complexes
Texts
1) Lecture notes in PDF format 2) Physical Methods for Chemists, R.S. Drago, 1992, Saunders
Contents
The main subjects are: -NMR- physical principles, selection rules, macroscopic magnetization, relaxation times, chemical shift, magnetic anisotropy, scalar coupling -Paramagnetic NMR- interaction between nuclear and electronic magnetic moments, contact and dipolar contribution, shift reagents, relaxation reagents, paramagnetic relaxation, determination of structural by NMR, The Evans method for the determination of the electronic magnetic moment -EPR- physical principles, the g and A parameters, magnetic anisotropy, calculation of g for systems with S = 1/2, systems with two or more unpaired electrons (S>1/2) -ENDOR- double resonance technique (microwaves - radio waves), principles and applications -MCD- Magnetic circular dichroism) - induction of optical activity in the presence of a magnetic field, the terms A, B, and C, the use of UV, EPR, and MCD data to determine the geometry of complexes -Mössbauer Spectroscopy- physical principles, isotropic shift, quadrupole interaction, the effect of magnetic fields on the spectrum.
