Ligand based reductive elimination from a thorium compound

Submitted by Chip Nataro / Lafayette College on Tue, 05/23/2017 - 16:52

This literature discussion is based on a paper describing the ligand-based reductive elimination of a diphosphine from a thorium compound (Organometallics2017, ASAP). The thorium compound contains two bidentate NHC ligands providing an opportunity to discuss the coordination of these ligands. The ligand-based reduction is very subtle and would be challenging for students to pick up without some guidance. The compound undergoing reductive elimination also presents an excellent introduction into magnetic nonequivalence and virtual coupling.

SOP4CV - A Web Resource for Cyclic Voltammetry Information

Submitted by Gerard Rowe / University of South Carolina Aiken on Fri, 05/05/2017 - 11:00

This is a great website created by Dr. Daniel Graham (who has the distinction of publishing a paper featured on TOC ROFL) to give anyone a working understanding of cyclic voltammetry techniques, their physical background, and the interpretation of their results.  

KINETICS - Computations vs. Experiment

Submitted by Teresa J Bixby / Lewis University on Sat, 03/25/2017 - 12:10

<p>This activity has students use Spartan to build an energy diagram for an SN2 reaction as a function of bond length. The activation energy can then be used to determine the rate constant for the reaction. After a few intoductory questions to orient general chemistry students to the organic reaction (with a short class discussion), the instructions lead them step-by-step to build the energy diagram for CH&lt;sub&gt;3&lt;/sub&gt;Cl + Cl- --&gt; Cl- + CH&lt;sub&gt;3&lt;/sub&gt;Cl.

Diverting Wilkinson's Catalyst: Critical Analysis of a Literature Paper

Submitted by Matt Whited / Carleton College on Tue, 02/21/2017 - 18:52

This LO is a problem-set-style literature discussion that leads students through a critical analysis of an interesting but flawed paper from the recent chemical literature.  Students use the questions to help them work through the paper prior to class, providing plenty of raw material for an in-class discussion about various aspects of the work from a mechanistic organometallic perspective.  The questions help students critically analyze substrate tables, spectroscopic data, and computational results from DFT.

Inorganic Chemistry for Geochemistry and Environmental Sciences Fundamentals and Applications by George W. Luther III

Submitted by Rachel Narehood Austin / Barnard College, Columbia University on Wed, 01/04/2017 - 16:10

This is a great new textbook by George Luther III from the University of Delaware.  The textbook represents the results of a course he has taught for graduate students in chemical oceanography, geochemistry and related disciplines.  It is clear that the point of the book is to provide students with the core material from inorganic chemistry that they will  need to explain inorganic processes in the environment.

Isotope Effects in Arene C-H Bond Activation by Cp*Rh(PMe3)

Submitted by Adam Johnson / Harvey Mudd College on Wed, 12/28/2016 - 13:20

This literature discussion is based on a paper by Bill Jones and Frank Feher (J. Am. Chem. Soc., 1986, 108, 4814-4819). In this paper, they study the activation of aromatic C-H bonds by a rhodium complex. Through careful experimental design, they were able to examine isotope effects on the selectivity of the reaction. Analysis of the rate data allowed them to prepare a reaction coordinate free energy diagram. This paper also introduces the effects of C-H bond breaking in early or late transition states on the vibrational energy spacing at both ground and excited states.

Understanding the Mechanism of Grubbs-Catalyzed Olefin Metathesis

Submitted by Richard Lord / Grand Valley State University on Wed, 12/28/2016 - 10:42

A literature discussion has been developed for two courses: (i) a more basic set of questions appropriate for a sophomore level course or, possibly, a one semester upper level course that does not spend much time on organometallics, and (ii) an in-depth, in- and out-of-class set of assignments appropriate for an organometallics unit or course. Both sets of questions explore the mechanism of olefin metathesis in first- and second-generation Grubbs catalysts using a variety of spectroscopic kinetic techniques that were presented in the paper Sanford, M. S.; Love, J. A.; Grubbs, R. H. J.

Energetics and mechanisms of reductive elimination from Pt(IV)

Submitted by Adam Johnson / Harvey Mudd College on Tue, 12/27/2016 - 18:29

This literature discussion is based on a paper by Karen Goldberg (J. Am. Chem. Soc., 1995, 117, 6889-6896). In this early paper by Goldberg, she studied the reductive elimination of ethane and methyl iodide from dppePtMe3I. The paper is well written, and approachable for undergraduates. It shows a real, interesting application of thermodynamic and kinetic methods to the study of a problem in mechanistic chemistry.

Kinetic and Mechanistic Aspects of Atom Transfer Radical Addition (ATRA) Catalyzed by Copper Complexes

Submitted by Abby O'Connor / The College of New Jersey on Thu, 12/15/2016 - 17:28

Reading and understanding a journal article is a critical skill to obtain as a student. After college, many students will pursue careers in which learning occurs exclusively from the literature. Students  will read a full paper from the journal Inorganic Chemistry and answer guiding questions pertaining to the article. There will be an in class discussion about the article to introduce which is used to introduce the topic of catalysis. This assignment breaks down the article through a series of questions that helps students to navigate a journal article.