The lecture notes from today's powerpoint lecture are posted on Carmen. Please read over them and play around with the powerpoint so you can see how the molecular orbitals are generated from the orbital overlap of the atomic orbitals. In order to understand the content of your REEL project you will need to have a firm understanding of Molecular Orbital diagrams and how they will relate to a UV-Vis spectrum.
A UV-Vis spectrometer measures the energy at which electronic excitations occur. We can analyze the spectra generated from these instruments in order to rationalize why certain solutions or materials exhibit the colors they do. We will focus on two main factors influencing color: the central transition metal atom and the choice of ligand. Lecture will start up on Friday talking about what happens to the color when we replace one ligand with another, and how we go about arranging the ligands in order of how they split the d orbitals. This is the main topic of REEL Lab 3 and 4. The understanding of this material is vital for your research project so be sure to read over the labs. I know several students expressed frustration that some of this material is not in the book, so in order to help out I plan to post supplemental reading material on Carmen for you to read. In the Content section of Carmen in Section F. titled REEL Supplemental Information I have posted a "chapter" that I wrote on Orbitals, Bonding, MO Diagrams, and Color. Please read through the reading as I hope it will solidify your knowledge on Molecular Orbital Diagrams.
I have also posted pdf versions of all the REEL labs and their report sheets on Carmen. Feel free to read them and start working on them before labs start to get a head start on learning the material.
Song Played Before Class:
Uncle Kracker - Smile
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