This research-based laboratory series investigates the stoichiometry of metal ion complexes of the Schiff-base ligand salicylaldehyde benzoyl hydrazone (SBH) in both the solid and solution states using gravimetric analysis and UV-VIS spectroscopy.
In our course sequence, students use VSEPR in general chemistry. Organic chemistry uses hybrid orbitals and pi-bonding. When students get to inorganic chemistry, they are often confused by the two descriptions, especially with a steric number (lone pairs plus bonded atoms) greater than four.
This activity is designed to serve as a bridge between multiple levels and returned to in more than one course.
150 different molecules can be manipulated in JSmol, with options to show multiple bonds, lone pairs, and orbitals suitable for pi-bonding.
The website entitled COMFORT (https://ipc.iisc.ac.in/~ags/ip312/comfort.html) is a easy way to visualise fragment molecular orbitals of many different organic ligands and also metal fragments. One can match the frontier orbitals of the fragments to see if they can form stable molecules. It helps one to see how fragments of an octahedral organometallic complex can be stripped of its ligands one by one to generate fragments that can match organic ligands with multiple "pi" bonds.
This activity is intended for use in a college-level second term general chemistry course, and is designed to engage students in a guided concept development exercise that will help them construct conceptual understanding of how non-volatile solutes impact the boiling point and freezing point of aqueous solvent.
This is an in-class activity that introduces students to the concepts of ionization of strong and weak acids in aqueous solutions and equilibrium constants for acid ionization using two of the domains in Johnstone's triangle of chemistry knowledge, submicroscopic particle level illustrations and symbolic representations.
This POGIL based activity is intended to review general chemistry concepts of atomic structure and to further those concepts with additional attention to d orbitals and radial distribution graphs. The primary model in the activity is The Orbitron website (https://winter.group.shef.ac.uk/orbitron/) with students examining the isosurface and radial distributions for a variety of orbitals.
These slides were originally developed as a part of an Earth Week presentation for a general audience, but can also be used as part of a general chemistry course or any course with electrochemistry. They provide a modern context and relevance to how lithium-ion batteries are produced and function.
The second cohort of VIPEr fellows pulled together learning objects that they've used and liked or want to try the next time they teach their inorganic courses.
This is an in class activity to provide students the opportunity to practice:
Our CHEM145 is offered once every two years: TR 75 min synchronous lectures, F 4 h in-person lab.