Design, synthesis, and carbon-heteroatom coupling reactions of organometallic nickel (IV) complexes (Sanford)

Submitted by Daniel Kissel / Lewis University on Thu, 06/30/2016 - 17:05
Description

This literature discussion is designed for upper-level inorganic chemistry students. The article explores the motivations, design, and characterization of novel nickel(II) and nickel(IV) complexes for carbon-heteroatom bond forming reactions. Students can apply and integrate their knowledge of organic chemistry mechanisms, organometallic chemistry, and techniques for characterizing metal-ligand compounds that include NMR and CV.

Zones of Catalysis: Only the Metal? A literature Discussion of Outer-Sphere Hydroboration

Submitted by Santiago Toledo / St. Edward's University on Thu, 06/30/2016 - 14:51
Description

This literature activity is designed to introduce students to the concept of outer-sphere hydroboration catalytic reactions. It can be used after hydrogenation and hydroboration reactions have been introduced in class (typically covered in organic chemistry). Additionally, this activity allows students to apply their understanding of redox chemistry, acid base chemistry, and physical techniques to characterize products and elucidate reactions mechanisms.

Structure matching: the $64,000 question

Submitted by Kari Stone / Lewis University on Thu, 06/30/2016 - 14:31
Description

In-class exercise that helps students learn how to use structural data and other experimental methods to assign structure. Using chemical intuition, students will rationalize the structures of metal complexes that differ by protonation states.

Basics of Lanthanide-Based Photophysics

Submitted by Jacob Lutter / University of Southern Indiana on Thu, 06/30/2016 - 14:27
Description

This 5 slides about outlines the basics of lanthanide photophysics as a primer for those new to the topic.  These properties are very unique and actually very useful, which is a topic for another time.  The intricacies of what causes the Ln luminescence, its strengths and drawbacks are discussed along with how these drawbacks are addressed in molecular complexes.  Notes for the instructor are included that explain each slide.

Electrochemical and Carbonyl Frequencies to Explain Ligand Non-Innocence in Organometallic Pincer Complexes

Submitted by Bryan Sears / Emmanuel College on Thu, 06/30/2016 - 10:52
Description

In this literature discussion, students read an Inorganic Chemistry paper (doi: 10.1021/ic503062w) about diarylamido-based PNZ pincer ligands and their Ni, Pd, and Rh complexes. Specifically, this paper uses IR and E1/2 potentials to demonstrate that the redox events occur not on the metal center but on the pincer ligands.

Cyclic voltammetry animations

Submitted by George Lisensky / Beloit College on Thu, 06/30/2016 - 07:17
Description

This is a question based approach for a discovery activity about cyclic voltammetry. The slider bar on a movie can used to control a variable and the displayed graph is updated to show the results. (You could also just play the movie to get an idea of what changes.)

The questions to be answered are

What is the shape of a cyclic voltammogram?

How are cyclic voltammograms affected by E0?

How are cyclic voltammograms affected by concentration?

How are redox equilibria affected by scan rate?

What if there are two reductions?

Fischer-Schrock Personality profile

Submitted by Adam Johnson / Harvey Mudd College on Wed, 06/29/2016 - 14:16
Description

This is a powerpoint presentation that was developed for and used at the 2016 VIPEr workshop on Organometallic chemistry at the University of Michigan. Organometallic chemistry is a broad field, and we have divided ourselves into different classes based on what we study. For example, the reactivity of the third row metals is often quite different from that of the fourth/fifth rows. Early (high oxidation state with anionic ligands typically) and Late (low oxidation state with neutral ligands typically) metal complexes have different properties and d electron counts.

Ligand Design for Selectivity and Complex Stability

Submitted by Daniel Kissel / Lewis University on Wed, 06/29/2016 - 00:49
Description

This is an overview of some important principles of ligand design. Topics covered include HSAB theory, the chelate effect, the chelate ring size effect, the macrocyclic effect, the cryptate effect, and steric focus in ligand design.

Close Packing Activity

Submitted by George Lisensky / Beloit College on Tue, 06/28/2016 - 11:47
Description

Many extended structures can be viewed as close-packed layers of large anions, with the smaller cations fitting in between the anions. Larger holes between close-packed anions can hold cations with octahedral coordination. Smaller holes between close-packed anions can hold cations with tetrahedral coordination. The online jsmol resources show these layers and their holes.

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