Hands-On Experience with Close Packing

Submitted by Patrick Holland / Yale University on Mon, 07/28/2008 - 10:19
Description
This is a really fun Challenge where student use two colors of marbles to simulate close packing. It culminates in them creating the face-centered cube "hidden" in hexagonal close packing.

Aufbau Exercise

Submitted by Patrick Holland / Yale University on Mon, 07/28/2008 - 10:12
Description

This is a Challenge for the beginning of an Inorganic class, to remind students of the basics of Aufbau, etc. Inorganic Challenges are exercises designed to be solved by a small group of students. Some Challenges practice a problem-solving algorithm, some reinforce important concepts, and some involve creativity or games. You can pick and choose Challenges from our Web site to increase active learning in your classroom, and we ask that you contribute creative Challenges of your own to give a head start to teachers at other colleges and universities!

Find the Mistake!

Submitted by Patrick Holland / Yale University on Mon, 07/28/2008 - 10:09
Description

This Challenge trains student to find inconsistencies in a molecular-orbital diagram. Inorganic Challenges are exercises designed to be solved by a small group of students. Some Challenges practice a problem-solving algorithm, some reinforce important concepts, and some involve creativity or games. You can pick and choose Challenges from our Web site to increase active learning in your classroom, and we ask that you contribute creative Challenges of your own to give a head start to teachers at other colleges and universities!

Battle of the Theories: Valence-Bond vs. Molecular-Orbital

Submitted by Patrick Holland / Yale University on Mon, 07/28/2008 - 10:04
Description

This Challenge practices both VB and MO models, and can be used to show the superiority of MO models for explaining simple molecules like O2 and CH4. It also demonstrates how scientists make rational choices between theories. Inorganic Challenges are exercises designed to be solved by a small group of students. Some Challenges practice a problem-solving algorithm, some reinforce important concepts, and some involve creativity or games.

Point Group Symmetry Game

Submitted by Patrick Holland / Yale University on Mon, 07/28/2008 - 09:59
Description

This is a game that gets students interested in point group symmetry, and helps them to see the symmetry in everyday objects. It is a competition in which the groups try to bring in the hardest object to assign. Inorganic Challenges are exercises designed to be solved by a small group of students. Some Challenges practice a problem-solving algorithm, some reinforce important concepts, and some involve creativity or games.

Inorganic Challenge: Lewis structures and VSEPR

Submitted by Patrick Holland / Yale University on Mon, 07/28/2008 - 09:36
Description

This is an Inorganic Challenge that gives students an opportunity to practice the algorithm for difficult Lewis structures, and using good problem-solving technique. Inorganic Challenges are exercises designed to be solved by a small group of students. Some Challenges practice a problem-solving algorithm, some reinforce important concepts, and some involve creativity or games.

Computational Study of tetrachlorbis(dimethylsulfoxide) tin(IV) Linkage Isomers

Submitted by N. Fackler / Nebraska Wesleyan University on Wed, 07/16/2008 - 17:23
Description

This experiment is a computational supplement to Part B of the tin chemistry described in "Synthesis and Technique in Inorganic Chemistry" (Exp 7; see below for the complete citation).*  Students will optimize and compute IR spectra for the cis and trans and corresponding linkage isomers of tetrachlorbis(dimethylsulfoxide) tin(IV).  A comparison of experimental (IR spectra) and computational data (enthalpies of formation; IR spectra) will aid them in determining the most likely product of this simple synthesis and in identifying the S-O vibrations in their experimental spectrum.

Computational Modeling of a Molybdenum Piano Stool Complex

Submitted by N. Fackler / Nebraska Wesleyan University on Wed, 07/16/2008 - 15:28
Description

This is a computational/molecular modeling supplement to the synthesis of  [1,3,5-C6H3(CH3)3]MoCO3 included in the third edition of  "Synthesis and Technique in Inorganic Chemistry" (see full citation below)*. Students optimize the model and compute an infrared spectrum and compare it to their experimental (solution) spectrum.

*G. S. Giorlami, T. B. Rauchfuss, R. J. Angelici  “Synthesis and Technique in Inorganic Chemistry: A Laboratory Manual”, Third Edition

Identifying residual solvents

Submitted by Joe Fritsch / Pepperdine University on Thu, 06/26/2008 - 14:50
Description
Identifying residual solvents is important in helping students to interpret their NMR spectra and in the preparation of elemental analysis samples.  I have found the NMR work of Gottlieb and Nudelman to be valuable in my research and the teaching lab. The tabular data for many residual solvents in common NMR solvents for both proton and carbon spectra has been extremely valuable. Interpreting an NMR spectrum containing a residual solvent becomes  easier when the chemical shifts and multiplicity for the solvent are known.