Building Molecular Orbitals for a Square Pyramidal Oxorhenium(V) Complex

Submitted by M. Watzky / University of Northern Colorado on Thu, 06/30/2016 - 17:21
Description

This activity guides students into building a Molecular Orbital diagram, which focuses on metal-centered orbitals of mostly d character, for a square pyramidal complex that includes different types of ligands. Students are then asked to "fill" the resulting orbitals with metal d electrons, and examine the stability of the complex.

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.

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.

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.

A Guided-Inquiry Approach to Building a Catalytic Cycle

Submitted by M. Watzky / University of Northern Colorado on Mon, 06/27/2016 - 19:00
Description

This activity introduces students to fundamental types of organometallic reactions, and directs them to examine how each of these reactions affects the total electron count for the organometallic complex and the oxidation state of the central metal.  Students are then directed to use these reactions to build a sequence of steps for a catalytic cycle.

Inquiry-Based Introduction to Carbonyl Ligands

Submitted by Emily Sylvester / Duquesne University on Mon, 06/27/2016 - 17:20
Description

This in-class worksheet introduces students to the different ways we describe organometallic ligands – bonding, properties, spectroscopy, etc. – using carbon monoxide as an example. It is structured as an inquiry-based activity, where students work together in small groups but check in with the entire class at appropriate intervals. I plan to use this activity with my advanced inorganic students next year.

Determining transition metal oxidation states: Recognizing bond metal-ligand types

Submitted by Brandon Quillian / Georgia Southern University on Mon, 06/27/2016 - 16:43
Description

In this in-class activity, students will determine the formal oxidation state of transition metal complexes by performing bonding type analysis of ligand−metal bonds. This in-class project is intended for those with little background in inorganic chemistry and aims to provide simple methods to calculate the formal charge of transition metals through bond-type analysis. While there are more sophisticated models already available to assign transition metal oxidation states, such as the LXZ (CBC) model, this exercise is intended for students who are coordination chemistry novices.

Student Oral Presentations of a Communication from the Primary Literature

Submitted by Carmen Works / Sonoma State University on Mon, 06/27/2016 - 16:43
Description

In the humanities it is common practice to read a piece of literature and discuss it.  This is also practiced in science and is the purpose of this exercise.  Each student is assigned a communication from the current  literature (inorganic, JACS, organometallics, J. Phys.