Introduction to Mercury

Submitted by Anthony L. Fernandez / Merrimack College on Thu, 01/22/2015 - 20:57
Description

In this exercise, students are introduced to Mercury, a program for visualizing and analyzing crystal structure data.  Students are guided through opening the program for the first time and viewing a structure from the Teaching Subset, a selection of structures from the Cambridge Crystallographic Database (CSD). Activites include changing the representation of the complex, moving the structure around the window, accessing information about the structure, and measuring bond lengths and angles within the structure.

Cobalt-Ammine complexes and theories of bonding in metals

Submitted by EGunn / Simmons College on Mon, 01/12/2015 - 12:54
Description

This is a two-week lab in which students synthesize and then characterize three Werner cobalt complexes using IR, UV/VIS and computer calculations using Spartan. Syntheses are based on procedures from:

Angelici, R. J. Synthesis and Technique in Inorganic Chemistry. University Science Books, 1996, pp 13-17.

Borer, L.L.; Erdman, H.W.; Norris, C.; Williams, J.; Worrell, J. Synthesis of trans-Tetraamminedichlorocobalt (III) chloride, Inorganic Syntheses, Vol 31, 1997, pp 270-271.

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".

Zeolite Synthesis

Submitted by EGunn / Simmons College on Tue, 01/06/2015 - 16:39
Description

This lab was part of the materials science portion of my second-year inorganic chemistry course. Students synthesize a zeolite structure and grow a chemical garden as examples of silicate chemistry.

Visualization of Zeolite Structure

Submitted by EGunn / Simmons College on Tue, 01/06/2015 - 15:56
Description

Students use a Java-based website to explore the faujasite zeolite structure. The activity questions guide them through identifying different atomic positions within the structure, and orienting the zeolite pores and "cages" relative to the crystal axes. 

Preparation of a Ferrofluid

Submitted by EGunn / Simmons College on Tue, 01/06/2015 - 14:12
Description

This lab handout and supplementary materials were developed based on a publication in the Journal of Chemical Education:

Berger, P.; Adelman, N.; Beckman, K.; Campbell, D.; Ellis, A.; Lisensky, G. Preparation and Properties of an Aqueous Ferrofluid. J. Chem. Educ. 1999, 76 (7), 943-48

The Importance of the Trans Effect in the Synthesis of Novel Anti-Cancer Complexes

Submitted by Sheri Lense / University of Wisconsin Oshkosh on Mon, 01/05/2015 - 15:04
Description

In this activity, students apply knowledge of the trans effect to the synthesis of planar Pt(II) complexes that contain cis-amine/ammine motifs.  These complexes are of interest as both potential novel chemotherapeutic Pt(II) complexes and as intermediates for promising chemotherapeutic drugs such as satraplatin.  The questions in this LO are based on recent research described in the paper “Improvements in the synthesis and understanding of the iodo-bridged intermediate en route to the Pt(IV) prodrug satraplatin,” by Timothy C. Johnstone and Stephen C.

The Color and Electronic Configurations of Prussian Blue

Submitted by EGunn / Simmons College on Mon, 01/05/2015 - 14:47
Description

I used this paper to illustrate several course concepts related to materials structure (crystal lattice structure, coordination number, crystal field theory and orbital splitting, symmetry, electronic spectra, allowed and forbidden transitions). This activity was paired with a laboratory experiment (see related VIPEr objects) in which students synthesized Prussian Blue, and gave students a really in-depth look at what was going on when they mixed those solutions together.

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.