N-stabilized carbenes and applications in the literature

Submitted by Brad Wile / Ohio Northern University on Mon, 09/07/2020 - 20:51
Description

This literature discussion was based on a short, readable piece from the trade magazine Chemical and Engineering News. Since this was written in a more general tone, it served as a reasonable introduction to carbenes for students in my advanced inorganic class. I have been looking to expand the examples of carbenes presented to students beyond those in the text. Simple examples of Fischer, Schrock, and N-heterocyclic carbenes are plentiful, but modern applications haven't been featured in the text that I use.

First Look at Coordination Complexes

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

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.

Synthesis of Fluorescent Aluminum Complexes

Submitted by Taylor Haynes / California Polytechnic, San Luis Obispo on Fri, 08/28/2020 - 15:34
Description

In this experiment, Students synthesize a Schiff Base and the corresponding aluminum complex to measure fluorescence. The lab provides exposure to air-free synthetic techniques, including the use of Schlenk Line techniques and safe handling of sure-seal bottles. Following data collection, students will be able to explain fluorescence spectroscopy and compare it to absorbance spectroscopy.

Chemistry Icebreakers

Submitted by Anne Bentley / Lewis & Clark College on Sat, 08/15/2020 - 22:37
Description

We have developed a set of icebreaker activities that could be used at any course level, either in an online video chat or in a classroom. These are based on the popular Mad Libs game in which some words are left out of a story and players are asked to provide words to fill in the blanks without knowing much about the story. We've provided an introduction to the game, definition of typical parts of speech that are requested (ie, adverb, noun, adjective, etc), and three starter activities.

First Day Discussion - What Is Inorganic Chemistry?

Submitted by Amanda Reig / Ursinus College on Fri, 08/07/2020 - 21:21
Description

In 2019, the journal Inorganic Chemistry updated it's scope (https://pubs.acs.org/page/inocaj/about.html).  This updated scope inspired me to update my first day of class activity for Inorganic (which was typically a version of the excellent first-day LOs from VIPEr).  

I asked students to read the journal scope (web link or hard copy provided) and answer a few questions in small groups:

Easy and Inexpensive Conversion of Lab Safety Goggles to Face Shields

Submitted by Amanda Reig / Ursinus College on Thu, 08/06/2020 - 13:30
Description

In the time of COVID-19, a need for additional PPE in the form of face shields was deemed required for safe laboratory work when in the presence of other students and faculty.  An inexpensive method was devised to convert standard laboratory safety goggles into a face shield through the use of commercially available plastic report or presentation covers (sometimes called binding covers). This LO describes the fabrication process along with chemical compatibility and flammability testing of the purchased plastic sheets.

A cobalt hydroformylation catalyst tribute to Malcolm Green

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

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.

Blomstrand, Jørgensen, and Werner

Submitted by Brad Wile / Ohio Northern University on Fri, 07/10/2020 - 11:05
Description

This is a short set of slides I use to introduce aspects of coordination chemistry for my foundation level inorganic chemistry class. 

Demonstration of Hard-Soft Acid-Base Theory: An Ion-Exchanger for Recovery of Rare Earth Metals

Submitted by Gary Guillet / Furman University on Wed, 07/08/2020 - 08:19
Description

The article from The Journal of the American Chemical Society by M. Kanatzidis et al describes a new ion-exchange material (FJSM-SnS) that shows high selectivity for rare-earth metals (REE) and very fast adsorption kinetics.  A number of techniques are used to characterize the properties of the compound that students may not be very familiar with but the article presents in an accessible way.

The reciprocal interview: A strategy for the first day of class

Submitted by Brad Wile / Ohio Northern University on Wed, 07/01/2020 - 12:54
Description

The reciprocal interview is a first day of class strategy described by Hermann and Foster,1 centered around changing classroom norms. The instructor begins by interviewing students about their goals and expectations for the course, before later turning these around as reasonable expectations of the students. In essence, this is a strategy to invite students to think about the course in a business-like environment, and view their expectations and the instructor expectations as originating from the same set of motivations.