Delta and Phi Bonding in Actinide Complexes

Submitted by Anne Bentley / Lewis & Clark College on Sun, 10/25/2020 - 13:28

This article provides an entry point for students to apply their knowledge of electron configurations and molecular orbital theory to the lanthanide and actinide elements. We have provided a large number of possible questions to use, grouped by theme.  Instructors can pick and choose questions that best fit their course.

First Look at Coordination Complexes

Submitted by Anthony L. Fernandez / Merrimack College on Sun, 09/06/2020 - 15:08

When transitioning into inorganic chemistry from organic chemistry, students are surprised by the complexity of metal complexes. To ease this transition, students are asked to look at the crystal structure of a coordination complex [(+/-)cis-dichloro-bis(ethylenediamine)-cobalt(III) chloride monohydrate], make some observations about what they see, and provide a list of questions that they would like answered. Students usually note that there are atoms/ions that are "floating" and are seemingly unattached to anything else in the structure.

Jahn-Teller effect, theory and examples

Submitted by Adam Johnson / Harvey Mudd College on Thu, 08/06/2020 - 18:44

At a recent SLiThEr workshop, a request was put out for an introduction to the Jahn-Teller effect. I had already prepared several slides showcasing single crystal X-ray data for my class this spring so I put this together with some additional examples from my lab and the literature.  Single crystal XRD data is presented to support the claims.

A cobalt hydroformylation catalyst tribute to Malcolm Green

Submitted by Chip Nataro / Lafayette College on Mon, 07/27/2020 - 20:00

In this paper (Llewellyn, Green and Cowley, Dalton Trans. 2006, 4164-4168) the synthesis and characterization of two cobalt compounds with an N-heterocyclic carbene ligand (IMes) are reported. the first, [Co(CO)3(IMes)Me] was prepared by the reaction of [Co(CO)3(PPh3)Me] with IMes. The second compound, [Co(CO)3(IMes)COMe] is formed by the addition of Co to the first.

A copper "Click" catalyst for the synthesis of 1,2,3-triazoles

Submitted by Chip Nataro / Lafayette College on Wed, 06/10/2020 - 11:40

This paper (Gayen, F.R.; Ali, A.A.; Bora, D.; Roy, S.; Saha, S.; Saikia, L.; Goswamee, R.L. and Saha, B. Dalton Trans2020, 49, 6578) describes the synthesis, characterization and catalytic activity of a copper complex with a ferrocene-containing Schiff base ligand. The article is relatively short but packed with information. However, many of the details that are assumed knowledge in the article make for wonderful questions some of which I hope I have captured.

Gold carbonyl complexes

Submitted by Adam Johnson / Harvey Mudd College on Tue, 06/09/2020 - 15:06

I've been meaning to write an LO on non-classical metal carbonyl complexes for a long time. This paper describes the synthesis and characterization of a gold carbonyl prepared in superacidic media. The LO asks the students to do some relatively straightforward reduced mass calculations to predict the 13C labeled CO stretch from the unlabeled one, but then asks the students to think about /why/ the Au-CO stretch is /higher/ than that of free CO.

s-p Mixing and the Order of MOs in Diatomic Molecules

Submitted by Michelle Personick / Wesleyan University on Fri, 06/05/2020 - 20:13

These slides provide an introduction to s-p mixing in diatomic molecular orbital diagrams appropriate for students in a general chemistry course. 

Inorganic Active Learning Lesson Plan Design

Submitted by Meghan Porter / Indiana University on Fri, 05/15/2020 - 09:05

I created this activity as a way to get the class involved in creating new, fun ways to teach course concepts (selfishly- that part is for me) and for students to review concepts prior to the final exam (for them).  Students use a template to create a 15-20 min activity that can be used in groups during class to teach a concept we have learned during the semester.  We then randomly assign the activities and students work in groups to complete them and provide feedback.

The benefits are twofold:

chromium and molybdenum arene complexes (COVID-19 version)

Submitted by Adam Johnson / Harvey Mudd College on Sat, 03/21/2020 - 19:49

April 2021 update: I am in the process of expanding this laboratory and have now recorded videos, linked below, on youtube. There is a video of general air sensitive reaction setup, the synthesis and isolation of the mesitylene and the N,N-diethylaniline derivatives. I also have better quality data which I will add here as well.

Ferrocene acylation - The Covid-19 Version

Submitted by Chip Nataro / Lafayette College on Sat, 03/21/2020 - 12:56

This is the classic Chromatography of Ferrocene Derivatives experiment from "Synthesis and Technique in Inorganic Chemistry" 3rd Ed. (1986 pp 157-168) by R. J. Angelici.