310-318M%20Synopsis - Dr. John A. Colapret What Do I Need...

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Dr. John A. Colapret What Do I Need to Remember from Organic I? A brief chapter-by-chapter summary of the most important topics that you should remember from CH 310M appears below. Please come to office hours for help as quickly as possible if you have any questions!!! Chapter 1 Be able to draw Lewis structures for molecules. Understand the difference between ionic and covalent bonds; be able to draw bond dipole moments and net molecular dipole moments for polar covalent molecules. Be able to calculate formal charge on atoms. Be able to draw resonance structures, using curved arrows to symbolize the flow of electrons. Be able to apply the octet rule. Know the exceptions to the octet rule. Be able to identify the resonance structure that contributes most to the “true” structure of the resonance hybrid. Know the organic functional groups (structure and name). Be able to indicate partial charges in polar functional groups. Know the various possible hybridization states for carbon (sp, sp 2 , sp 3 ) and how these different states are formed by mixing s and p orbitals in the valence shell of carbon. Be able to draw representations of these hybrid orbitals and to show how bonds can be formed for simple organic molecules by the overlap of these hybrid orbitals with orbitals on another atom. Know how the shape of a molecule (i.e. bond angles) corresponds to the hybridization of the central atom. Understand the distinction between a σ bond and a π bond. Chapter 2 Be able to draw the structures of constitutional isomers using both condensed structural formulas and “line-angle” structures. Know the alkyl groups and the appropriate symbols for them (e.g. CH 3 = Me = methyl, etc.) Know how to use IUPAC nomenclature to name alkanes and haloalkanes; know the names of the commonly encountered alkyl groups (e.g. methyl, ethyl, propyl, isopropyl, etc.). Memorize the names of all of the parent hydrocarbons up to C 12 (dodecane). Be able to name substituted monocyclic hydrocarbons, including cis/trans. Know how to classify carbon and hydrogen atoms (1°, 2°, 3°, 4°). Be able to draw conformational energy diagrams for acyclic molecules, illustrating the energy changes that occur upon rotation about carbon-carbon single bonds. Be able to draw the appropriate Newman projections for the conformers corresponding to energy maxima and minima. Know the difference between torsional, angle, and steric strain. Be able to draw chair representations of cyclohexane, showing the orientation of axial and equatorial bonds and substituents, using both Newman projections and line drawings. Be sure you can draw the result of a “chair flip.” Be able to predict relative stabilities of different conformations of mono- and disubstituted (including cis and trans) cyclohexanes. Know how to predict which conformer will be the major form. Chapter 3
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This note was uploaded on 02/23/2009 for the course CH 310n taught by Professor Iverson during the Spring '08 term at University of Texas at Austin.

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310-318M%20Synopsis - Dr. John A. Colapret What Do I Need...

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