Iron Cross-Coupling Catalysis

Submitted by Laurel Goj Habgood / Rollins College on Wed, 09/16/2015 - 13:08
Description

In this experiment, students will synthesize and characterize an iron complex followed by completion of two series of catalytic cross-coupling reactions mimicking the methodology utilized by organometallic chemists to balance catalyst efficacy and substrate scope.  Initially the complex Fe(acac)3 [acac =  acetylacetone] is prepared.  Two sets of catalytic reactions are completed: one comparing different iron catalysts (Fe(acac)3, FeCl2, FeCl3) while the other compares substrates (4-chlorotoluene, 4-chlorobenzonitrile, 4-chlorotrifluorotoluene).

Kinesthetic Learning: Cyclic Voltammetry Mechanisms

Submitted by Chip Nataro / Lafayette College on Mon, 07/06/2015 - 17:03
Description

This activity was created as part of a primer on cyclic voltammetry for the 2015 TUES workshop. The activity is designed to have one person represent the potential and several other people represent the molecules in solution. By simply scanning (walking through the line of people) and shaking hands, several simple mechanisms can be illustrated. The use of a joy buzzer with the first hand shake is highly encouraged, but not at all necessary.

Peer Review - How does it work?: A literature discussion with a focus on scientific communication

Submitted by Mike Norris / University of Richmond on Thu, 07/02/2015 - 20:21
Description

This learning object is based on discussion of the literature, but it follows a paper through the peer review process.  Students first read the original submitted draft of a paper to ChemComm that looks at photochemical reduction of methyl viologen using CdSe quantum dots.  There are several important themes relating to solar energy storage and the techniques discussed, UV/vis, SEM, TEM, electrochemistry, and catalysis, can be used for students in inorganic chemistry.

Kinetics of electrocatalytic reduction of carbon dioxide by Mn catalysts containing bulky bipyridine ligands

Submitted by Kathleen Field / WGU on Thu, 07/02/2015 - 17:23
Description

This question set has students examine the kinetics of the electrocatalytic reduction of CO2 to CO described in Sampson, D.L.; Nguygen, D., Grice, K.A.; Moore, C.E.; Rheingold, A.L.; Kubiak, C.P. Manganese Catalysts with Bulky Bipyridine Ligands for the Electrocatalytic Reduction of Carbon Dioxide:  Eliminating Dimerization and Altering Catalysis.  J. Am. Chem. Soc. 2014, 136, 5460-5471. 

Ir(III) Catalyst Regeneration Using Molecular Oxygen: Addressing Key Challenges that Hinder Alkane Dehydrogenation Catalysis. A Literature Discussion

Submitted by Vanessa / Albion College on Thu, 07/02/2015 - 15:56
Description

This Learning Object involves reading a recent scientific journal article, answering questions relating to the content, and participating in a classroom discussion. The paper under review is “Regeneration of an Iridium (III) Complex Active for Alkane Dehydrogenation Using Molecular Oxygen,” Organometallics, 33, 1337-1340. DOI: /10.1021/om401241e).

Synthesis of Aspirin- A Lewis Acid Approach

Submitted by Kathleen Field / WGU on Mon, 06/29/2015 - 21:29
Description

This is the procedure for a Fe(III) catalyzed synthesis of aspirin, an alternative to the traditionally sulfuric acid catalyzed synthesis of aspirin.  The prep compares and contrasts the Bronsted acid catalyzed esterification reaction with a Lewis acid iron (III) catalyzed pathway.  This can be used in different courses at different levels, but is it written for a general/intro level chemistry course.    

Photoredox Dual Catalysis for Decarboxylative Cross Coupling Reaction

Submitted by Keying Ding / Middle Tennessee State University on Mon, 06/29/2015 - 14:53
Description

In this literature discussion, students are asked to read an article describing a type of dual catalytic system in which the synergistic combination of photoredox catalysis and nickel catalysis provides a general method that would exploit naturally abundant, inexpensive organic molecules as coupling partners. This paper addresses several green chemistry principles and serves as a great literature example for teaching organometallic chemistry or green chemistry course. 

Organometallics course F 2014

Submitted by Adam Johnson / Harvey Mudd College on Fri, 01/23/2015 - 16:54

This is a collection of LOs that I used to teach a junior-senior seminar course on organometallics during Fall 2014 at Harvey Mudd College.

Ligand Effects in Pd-Catalyzed Cross Coupling

Submitted by Matt Whited / Carleton College on Fri, 01/09/2015 - 14:30
Description

This set of questions was used to promote discussion within small groups (3 to 4 students) on how changing ligand properties can have dramatic effects on the product distributions in Pd-catalyzed cross coupling reactions.  The questions are pretty difficult and not always straightforward, partly because they are derived from the primary literature and thus inherently "messy".

Subscribe to Reaction mechanisms