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Freshman Organic Chemistry

Yale,, Fall 2008 , Prof. J. Michael McBride

Updated On 02 Feb, 19

Overview

How Do You Know - Force Laws, Lewis Structures and Resonance - Double Minima, Earnshaws Theorem and Plum - Puddings - Coping with Smallness and Scanning Probe Microscopy - X-Ray Diffraction-Seeing Bonds by Electron Difference Density - Quantum Mechanical Kinetic Energy - One-Dimensional Wave Functions - Chladni Figures and One - Electron Atoms - Reality and the Orbital Approximation - Orbital Correction and Plum - Pudding Molecules - Overlap and Atom - Pair Bonds - Overlap and Energy - Match - Checking Hybridization Theory with XH_3-Chemical Reactivity: SOMO, HOMO, and LUMO - Recognizing Functional Groups - Reaction Analogies and Carbonyl Reactivity - Amide, Carboxylic Acid and Alkyl Lithium-Oxygen and the Chemical Revolution - Rise of the Atomic Theory - Berzelius to Liebig and W�hler - Radical and Type Theories (1832-1850)-Valence Theory and Constitutional Structure (1858) - Determining Chemical Structure by Isomer Counting (1869)

Models in 3D Space (1869-1877); Optical Isomers - Vant Hoffs Tetrahedral Carbon and ChiralityCommunicating Molecular Structure in Diagrams and Words - Stereochemical Nomenclature; Racemization and Resolution - Preparing Single Enantiomers and the Mechanism of Optical Rotation - Esomeprazole as an Example of Drug Testing and Usage - Preparing Single Enantiomers and Conformational Energy - Stereotopicity and Baeyer Strain Theory -Conformational Energy and Molecular Mechanics - Sharpless Oxidation Catalysts and the Conformation of Cycloalkanes - Understanding Molecular Structure and Energy through Standard Bonds - Bond Energies, the Boltzmann Factor and Entropy - Potential Energy Surfaces, Transition State Theory and Reaction Mechanism

Includes

Lecture 3: Double Minima, Earnshaws Theorem and Plum-Puddings

4.1 ( 11 )


Lecture Details

Freshman Organic Chemistry (CHEM 125)

Continuing the discussion of Lewis structures and chemical forces from the previous lecture, Professor McBride introduces the double-well potential of the ozone molecule and its structural equilibrium. The inability for inverse-square force laws to account for stable arrangements of charged particles is prescribed by Earnshaws Theorem, which may be visualized by means of lines of force. J.J. Thomson circumvented Earnshaws prohibition on structure by postulating a "plum-pudding" atom. When Rutherford showed that the nucleus was a point, Thomson had to conclude that Coulombs law was invalid at small distances.

0000 - Chapter 1. Distinguishing Equilibrium and Resonance
0637 - Chapter 2. The Structure and Surface Potential of Ozone
2057 - Chapter 3. Visualizing Electrostatic Force Earnshaws Theorem
3507 - Chapter 4. J. J. Thomsons Plum Pudding Model

Complete course materials are available at the Open Yale Courses website httpopen.yale.educourses

This course was recorded in Fall 2008.

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Sam

Excellent course helped me understand topic that i couldn't while attendinfg my college.

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Dembe

Great course. Thank you very much.

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