The colors of transition metal compounds are highly variable. Aqueous solutions of nickel are green, of copper are blue, and of vanadium can range from yellow to blue to green to violet. What is the origin of these colors? A simple geometrical model known as crystal field theory can be used to differentiate the 5 d orbitals in energy. When an electron in a low-lying orbital interacts with visible light, the electron can be promoted to a higher-lying orbital with the absorption of a photon. Our brains perceive this as color.

A set of questions to be used in General or Introductory Inorganic Chemistry as a review or “quiz” of shapes and polarities.

Leisure activity after days of hard work at the IONiC VIPEr workshop in Seattle, WA.

Participants rented kayaks and paddled around the lake for about 90 minutes.

Pre-requisites: Application of a generous amount of sunscreen.

The original plan was to paddle to Lake Washington, but no directions or map was provided. So given the lack of navigation skills and familiarity with the area it is no surprise that only one kayak made it all the way to lake Washington (Go team FBL & KMH!).

This question set has students examine the kinetics of the electrocatalytic reduction of CO₂ to CO described in Sampson, D.L.; Nguygen, D., Grice, K.A.; Moore, C.E.; Rheingold, A.L.; Kubiak, C.P. Manganese Catalysts with Bulky Bipyridine Ligands for the Electrocatalytic Reduction of Carbon Dioxide:  Eliminating Dimerization and Altering Catalysis.  J. Am. Chem. Soc. 2014, 136, 5460-5471.