d-Orbital Splitting Patterns in a Variety of Ligand Geometries

Submitted by Anthony L. Fernandez / Merrimack College on Mon, 12/29/2014 - 10:43
Description

In this activity, the provided d orbital splitting patterns need to be matched with ligand geometries. Students are provided with the d orbital splitting diagrams for 6 ligand geometries (octahedral, trigonal bipyramidal, square pyramidal, tetrahedral, square planar, and linear). A web browser is used to view an animation (developed by Flick Coleman) which allows for the visualization of the relationship between the positions of the metal d orbitals and the ligands. Given this information, students should then be able to qualitatively rank the orbitals from highest to lowest energy.

Maggie's LOs

Submitted by Chip Nataro / Lafayette College on Fri, 09/12/2014 - 17:25

Ligand Lineup

Submitted by Sheri Lense / University of Wisconsin Oshkosh on Fri, 08/22/2014 - 11:40
Description

This is a kinesthetic activity in which students must utilize knowledge of the σ-donating, π-donating and π-accepting ability of ligands in order to rank the ligands in the spectrochemical series.  Students are each assigned a ligand on a card.  Suggested ligands are I-, Br-, Cl-, F-, ONO-, NO2- OH-, H2O, pyridine, NH3, ethylenediamine, bipyridine, phenanthroline, PPh3, CN- and CO.  Each student must evaluate the π-accepting, π-donating and σ-donating ability o

A Tale of Two Structures

Submitted by Chip Nataro / Lafayette College on Tue, 08/12/2014 - 10:32
Description

In this activity, students will compare and contrast two closely related structures, [Pd(dcpf)PR3]2+ (dcpf = 1,1'-bis(dicyclohexylphosphino)ferrocene; R = Me or Ph). They will be required to obtain the cif files from the supporting information of a paper. They will then make a variety of measurments in the two stuctures. These measurements can be made using a variety of different freely available programs. Instructions are provided for Mercury 3.3 and Olex2. Finally, students will be required to provide a rationale for the differences in the two structures.

The Chemistry of Cooley's Anemia: A Case Study

Submitted by Chris Bailey / Wells College on Wed, 08/06/2014 - 11:36
Description

In this case study, information is presented to students in the form of a dialog between a physician and two parents who have just learned that their child has thalassemia (Cooley’s Anemia). The treatment for this disorder requires a lifetime commitment to whole blood transfusion and chelation therapy (both administered on a daily to weekly basis); the biggest obstacle to long term survival is patient non-compliance.

A Living Syllabus for Sophomore Level Inorganic Chemistry

Submitted by Sheila Smith / University of Michigan- Dearborn on Mon, 08/04/2014 - 16:02
Description

In my sophomore level inorganic course, I have experimented with the idea of a living syllabus as a way to develop my own specific learning objectives and to help the students connect the material to the tasks that will be expected of them in assessing their learning. 

Isn't It Ionic (with apologies to Alanis Morissette)

Submitted by Craig M. Davis / Xavier University on Sun, 08/03/2014 - 16:58
Description

This spoof of the song "Isn't It Ironic" (by Alanis Morissette) summarizes the properties of ionic compounds in verse. Suitable for General Chemistry classes as well as Inorganic Chemistry, although a reference is made to the Born-Meyer equation.

The Structure and Function of Transferrin

Submitted by Chris Bailey / Wells College on Tue, 07/22/2014 - 14:51
Description

These Five Slides About examine the structure and function of the iron binding and transport protein transferrin. Students learn that transferrin also acts as an iron buffer and as a potential antimicrobial agent. The structure of the protein is explored in detail; it consists of a single polypeptide (80kDa) folded into two lobes, each of which can bind a single iron in a high affinity region. Changes in the protein as a result of iron uptake is discussed. The iron binding region and the requirement of a bidentate synergistic anion (carbonate) are examined.

An Accounting Ledger Method for Determining Lewis Dot Structures

Submitted by Chris Bailey / Wells College on Sat, 07/19/2014 - 19:45
Description

Over several decades of teaching General Chemistry I have utilized various methods to get students to draw appropriate Lewis Dot Structures. About 10 years ago I learned about a process which I call the "Account Ledger Method". In this method all valence electrons are assumed to initially belong to the molecule (and placed in a ledger) and not to specific individual atoms. As the molecule is put together those electrons are distributed systematically and removed from the ledger.

Modeling post-translational modification in cobalt nitrile hydratase with a metallopeptide from Anne Jones

Submitted by Kari Young / Centre College on Thu, 07/17/2014 - 16:23
Description

In this literature discussion, students read a paper about a cobalt metallopeptide that imitates the active site of the enzyme nitrile hydratase.  Specifically, the model complex is oxidized by air to produce a coordination sphere with both cysteine thiolate and sulfinic acid ligands, much like the post-translationally oxidized cysteine ligands in the biological system.