Distinguishing Between Metal Catalysts for Inner- and Outer-Sphere C-H Bond Functionalization

Submitted by David R. Weinberg / Colorado Mesa University on Mon, 07/16/2012 - 14:13
Description

This activity is meant to teach students about the types of homogeneous transition metal C-H bond functionalization catalysts. Before class, the students will read a short discussion of inner- and outer-sphere C-H bond functionalization catalysts. Then they will use their knowledge of transition metal oxidation states and ligands in order to assess whether a variety of catalysts react via inner- or outer-sphere pathways.

High Energy Density Materials: A laboratory and literature investigation (Christe)

Submitted by Kevin Hoke / Berry College on Fri, 07/13/2012 - 21:12
Description

The synthesis of the nitrogen triiodide ammoniate shock-sensitive explosive is a simple laboratory exercise, but it does require a lengthy time for the material to dry before it is active.  This activity uses that time to have students investigate some simple thermodynamics behind their explosive, as well as consult the literature on high energy density materials from the work of Karl O. Christe.

There is also a shorter version of the activity posted as an in-class activity that omits most of the literature investigation.

The Eyring Equation

Submitted by Adam Johnson / Harvey Mudd College on Thu, 09/29/2011 - 01:46
Description

I was taught (many years ago) the common misconception that fitting the linearized form of the Eyring equation overstates the error in the intercept because on a 1/T axis, the intercept is at infinite temperature, and the intercept is far from the real data. While researching various methods of data fitting, I stumbled across this great article from the New Journal of Chemistry (New J.

Understanding phase diagrams of solid state alloys: Application to archeological studies

Submitted by Lee Park / Williams College on Sat, 06/25/2011 - 13:43
Description
This paper from the Journal of Archeological Science describes the analysis of silver-copper artifacts found in Machu Picchu.  The archeological samples were compared to various control samples prepared from different compositions and under varying processing (thermal treatment) conditions.  Using analytical methods (mechanical hardness testing, micrographic analysis of microstructure and morphology, elemental analysis), researchers were able to offer hypotheses concerning the source materials and fabrication methods used by Inca artisans.

First Isolation of the AsP3 Molecule

Submitted by Anne Bentley / Lewis & Clark College on Fri, 09/03/2010 - 13:47
Description

Early in 2009, Christopher Cummins’ group at MIT reported (in Science) the synthesis of AsP3, a compound that had never been isolated at room temperature.  Later that year, a full article was published in JACS comparing the properties and reactivity of AsP3 to those of its molecular cousins, P4 and As4.  The longer article is full of possibilities for discussion in inorganic chemistry courses, with topics including periodic trends, NMR, vibrational spectroscopy, electrochemistry, molecular orbital theory, and coordination chemistry.

Video explanations and practice problems of basic chemistry and math topics

Submitted by Lori Watson / Earlham College on Wed, 02/24/2010 - 15:34
Description

This is a website which links to a wide variety of good quality YouTube mini-lectures on basic topics in chemistry, mathematics, physics and a variety of other sciences.  Each video is about 10 minutes long and many go through example problems slowly and completely.  

Biological and medical examples in intro chem at MIT

Submitted by Joanne Stewart / Hope College on Fri, 01/01/2010 - 16:29
Description

I read about these new biology examples for intro chem in a recent Association for Women in Science (AWIS) Washington Wire (December 2009, Issue II).  Professor Catherine Drennan from MIT and her colleagues introduced "examples of biological and medical topics that demonstrate chemistry principles into her introductory chemistry lectures to highlight the connection between the fields of biology and medicine, that students often love, and chemistry."  Their assessment showed that the examples increased student satisfaction with the course.

Siderophore Building: In class Exercise

Submitted by Sheila Smith / University of Michigan- Dearborn on Tue, 10/27/2009 - 21:25
Description
This is an in-class exercise (brainstorming) designed to lead the student through the design of a siderophore (or "iron lover") by applying his knowledge of Lewis acid- base chemistry (specifically HSAB theory), geometry and entropy. This is a good start for a discussion of iron transport and storage in the bioinorganic section of Inorganic II (transition metals). I also use it in my junior level descriptive course when we discuss coordination chemistry.

Interactive Spreadsheets for Inorganic Chemistry

Submitted by Lori Watson / Earlham College on Sun, 03/08/2009 - 15:28
Description

This web site contains a number of interactive spreadsheets, most of which are applicable to inorganic chemistry (or a physical chemistry class that uses inorganic examples).  Here's the list of the most relevant for most inorganic classes:

 

ABC kinetics - interactively plot concentration versus reaction extent for A, B and C in A -> B -> C by varying k values

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