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CHEM 125A - Freshman Organic Chemistry I

Lecture 07 - Quantum Mechanical Kinetic Energy. After pointing out several discrepancies between electron difference density results and Lewis bonding theory, the course proceeds to quantum mechanics in search of a fundamental understanding of chemical bonding. The wave function ψ, which beginning students find confusing, was equally confusing to the physicists who created quantum mechanics. The Schrodinger equation reckons kinetic energy through the shape of ψ. When ψ curves toward zero, kinetic energy is positive; but when it curves away, kinetic energy is negative! (from oyc.yale.edu)

Lecture 07 - Quantum Mechanical Kinetic Energy

Time Lecture Chapters
[00:00:00] 1. Limits of the Lewis Bonding Theory
[00:08:35] 2. Introduction to Quantum Mechanics
[00:16:36] 3. Understanding Psi as a Function of Position
[00:33:25] 4. Understanding Negative Kinetic Energy and Finding Potential Energy

References
Lecture 7 - Quantum Mechanical Kinetic Energy
Instructor: Professor J. Michael McBride. Resources: Professor McBride's website resource for CHEM 125 (Fall 2008). Transcript [html]. Audio [mp3]. Download Video [mov].

Go to the Course Home or watch other lectures:

Lecture 01 - How do You Know?
Lecture 02 - Force Laws, Lewis Structures and Resonance
Lecture 03 - Double Minima, Earnshaw's Theorem, and Plum-Puddings
Lecture 04 - Coping with Smallness and Scanning Probe Microscopy
Lecture 05 - X-Ray Diffraction
Lecture 06 - Seeing Bonds by Electron Difference Density
Lecture 07 - Quantum Mechanical Kinetic Energy
Lecture 08 - One-Dimensional Wave Functions
Lecture 09 - Chladni Figures and One Electron Atoms
Lecture 10 - Reality and the Orbital Approximation
Lecture 11 - Orbital Correction and Plum-Pudding Molecules
Lecture 12 - Overlap and Atom-Pair Bonds
Lecture 13 - Overlap and Energy-Match
Lecture 14 - Checking Hybridization Theory with XH3
Lecture 15 - Chemical Reactivity: SOMO, HOMO, and LUMO
Lecture 16 - Recognizing Functional Groups
Lecture 17 - Reaction Analogies and Carbonyl Reactivity
Lecture 18 - Amide, Carboxylic Acid and Alkyl Lithium
Lecture 19 - Oxygen and the Chemical Revolution (Beginning to 1789)
Lecture 20 - Rise of the Atomic Theory (1790-1805)
Lecture 21 - Berzelius to Liebig and Wohler (1805-1832)
Lecture 22 - Radical and Type Theories (1832-1850)
Lecture 23 - Valence Theory and Constitutional Structure (1858)
Lecture 24 - Determining Chemical Structure by Isomer Counting (1869)
Lecture 25 - Models in 3D Space (1869-1877); Optical Isomers
Lecture 26 - Van't Hoff's Tetrahedral Carbon and Chirality
Lecture 27 - Communicating Molecular Structure in Diagrams and Words
Lecture 28 - Stereochemical Nomenclature; Racemization and Resolution
Lecture 29 - Preparing Single Enantiomers and the Mechanism of Optical Rotation
Lecture 30 - Esomeprazole as an Example of Drug Testing and Usage
Lecture 31 - Preparing Single Enantiomers and Conformational Energy
Lecture 32 - Stereotopicity and Baeyer Strain Theory
Lecture 33 - Conformational Energy and Molecular Mechanics
Lecture 34 - Sharpless Oxidation Catalysts and the Conformation of Cycloalkanes
Lecture 35 - Understanding Molecular Structure and Energy Through Standard Bonds
Lecture 36 - Bond Energies, the Boltzmann Factor and Entropy
Lecture 37 - Potential Energy Surfaces, Transition State Theory and Reaction Mechanism