This is an assignment designed to help students begin to reflect on professional ethics of scientific practice. I have used this in a freshman and a senior seminar after 2-3 days of discussion of what professional ethics is and how one goes about choosing a course of action in an ethical dilemma. I use:
I wanted a modern organometallic experiment showing the utility of Pd for coupling reactions. Students attempted a variety of reaction conditions during the spring of 2007 and 2008. Eventually, we were able to get the reaction to work with a variety of primary amines (linear, cyclohexylamine) and t-butylamine. Yields are not great (40-80%) and this experiment needs some optimization. However, products were observed by GC-MS and NMR.
Relative metal-hydrogen, -oxygen, -nitrogen, and -carbon bond strengths for organoruthenium and organoplatinum compounds; equilibrium studies of Cp*(PMe3)2RuX and (DPPE)MePtX systems
Henry E. Bryndza, Lawrence K. Fong, Rocco A. Paciello, Wilson Tam, John E. Bercaw
J. Am. Chem. Soc.; 1987 ; 109(5); 1444-1456.
Students practice assignment of symmetry elements and point groups, practice developing a character table, and learn about the link between orbitals and irreducible representations.
This is a worksheet on Lewis structures and formal charges. The learning goal is for students to be able to use formal charges to defend the relative stabilities of resonance structures of molecules.
It’s very surprising how little students remember from general chemistry. This assignment helps students make connections between the macroscopic properties of solutions and what happens at the molecular level. This activity serves as a bridge between sections on acid-base chemistry and coordination chemistry.
Students are solicited for their models of the behavior of different chemical compounds in water in class and asked to put these models on the board. We then look at the properties of these solutions (color, acid-base) and refine these models in class.
Students are sent to find (and take pictures) of items in various point groups around campus. Generally, I give them a list of possible offices (though they are free to go to other places) and point groups (some hard) and the following ground rules:
In this activity, students self-organize according to periodic trends. I print out the attached cards onto card stock (each page will contain two) and hand them out to the students (one to each). Generally, we go outside and I shout out periodic trends (i.e. size, polarizability, ionization energy, Zeff etc.) and the students run to get in line in the correct order. I have a bell which I ding if correct, and a buzzer that I sound if incorrect. If incorrect, they have to try again.
This paper discusses the synthesis and characterization of a novel compound of nitrogen. The pre-discussion assignment asks students draw a Lewis structure for the N5+ cation, and using the tools of group theory, conduct a normal mode vibrational analysis, comparing the results to the experimental Raman spectral data.