CHEM 361 Inorganic Chemistry
Structure, Bonding & the Colors of Transition Metals
Structure, Bonding & the Colors of Transition Metals
Why is copper sulfate blue?
Same copper. Same +2 charge. Different colors.
The answer lies in d-orbital splitting โ how the ligands around copper change the energy gap between d orbitals, which changes which wavelengths of light get absorbed.
To understand this, we need: quantum numbers โ electron configuration โ crystal field theory โ spectroscopy. That's this course.
This isn't a traditional textbook-order course. We analyzed 7 inorganic chemistry textbooks to identify prerequisites, bottlenecks, and integration points.
32 concepts with no inorganic prerequisites. These are your entry points โ learn them first.
13 knowledge "hubs" โ bottlenecks where prerequisite chains converge. Master these to unlock everything else.
Integration endpoints โ topics with many prerequisites and no dependents. This is where it all comes together.
Every topic connects. Here's the chain that answers "Why is Cuยฒโบ blue?"
Cuยฒโบ has a dโน configuration. In an octahedral field (like [Cu(HโO)โ]ยฒโบ), the d-orbitals split into tโg and eโ sets. The energy gap ฮโ corresponds to ~600 nm (orange/red light). The complex absorbs red-orange and transmits blue. Change the ligands โ change ฮ โ change the color. That's why ammonia turns it deep blue-violet.
Each 75-minute class: 15 min review, 30 min new concepts, 25 min problem-solving in pairs, 5 min preview. You'll work, not just listen.
3D orbital visualizers, nomenclature sprints, symmetry games. Chemistry is spatial โ we'll use tools that let you see and manipulate molecules.
After each hub concept, a mastery check. No moving forward until foundations are solid. This prevents the "lost in week 8" feeling.
If everyone earns an A, everyone gets an A. Collaborate freely. The goal is understanding, not competition.
Cisplatin for cancer. Hemoglobin for oxygen transport. Solar cells and batteries. Inorganic chemistry is everywhere โ we'll connect theory to reality.
Hidden bonus: visit office hours in Week 1 and correctly name the highest-connectivity hub โ 3 bonus points on Exam 1.
| Weeks | Phase | Topics | Assessment |
|---|---|---|---|
| 1โ4 | Foundations | Quantum numbers, electron config, periodic trends, Lewis/VSEPR, symmetry basics | Quizzes 1โ4 |
| 5 | Hub 1 | Molecular Orbital Theory โ the first major bottleneck | Quiz 5 + Checkpoint |
| 6โ7 | Hubs 2โ4 | Coordination chemistry, nomenclature, isomerism | Midterm 1 |
| 8โ9 | Hubs 5โ7 | Crystal Field Theory, CFSE, spectrochemical series, magnetism | Quizzes 6โ7 |
| 10 | Hub 8 | Electronic spectra, selection rules โ explaining color | Midterm 2 |
| 11โ12 | Hubs 9โ13 | Solid state, band theory, redox, reaction mechanisms | Quizzes 8โ9 |
| 13โ14 | Capstones | Main group integration, bioinorganic, materials, catalysis | Quiz 10 + Presentations |
| 15 | โ | Review & synthesis | Final Exam |
Quizzes: 20%
Midterms (2): 30%
Case Analyses (2): 15%
Presentation: 10%
Final Exam: 25%
Rodgers, Descriptive Inorganic, Coordination and Solid-State Chemistry, 3rd Ed.
+ Supplementary readings from 6 other textbooks (provided via knowledge graph analysis)
"The periodic table is nature's Rosetta Stone. Once you learn to read it, you can decode the behavior of every element." โ Course Philosophy