Organic Chemistry 2230: Chapter 3 Part B Notes
Organic Chemistry 2230: Chapter 3 Part B Notes Chemistry 2230
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This 2 page Class Notes was uploaded by Amanda Biddlecome on Wednesday February 3, 2016. The Class Notes belongs to Chemistry 2230 at Clemson University taught by Dr. Schroeder in Fall 2016. Since its upload, it has received 24 views.
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Date Created: 02/03/16
Organic Chemistry 2230 Chapter 3 Part B February 1, 2016 Amanda Biddlecome 1) Multiple Substituents -‐all organic compounds can only have ONE parent -‐if you have an alcohol and an amine, alcohol takes precedence (ALWAYS) *use –ol as the parent, and use “amino” as a prefix for Nitrogen the substituent and use regular rules from there -‐parentheses tell you exactly what is bonded to what and how *break it down like you would when looking at a parent chain -‐when amine is the parent, don’t use parentheses 2) Conformations of Alkanes -‐representations of structures *skeleton is what we see the most often *want to be able to go from 3D to 2D on paper so just change the perspective that you look at the molecule from -‐Newman Project *staggered structure=stable; the bonds offset each other *eclipsed structure=not stable; the atoms and bonds line up directly behind each other -‐staggered is more stable because the hydrogen atoms have as much space between them as possible 3) Conformation of n-‐butane -‐n-‐because there’s three other possible but-‐ groups -‐either staggered or eclipsed wen looking down the bond from carbon 1 to carbon 2 -‐when you look down the bond between carbons 2 and 3 is when you get a switch up and can have different versions of the eclipsed structure *each possible structure has a lot of different potential energy *the most stable staggered is when the 2 extra carbons are opposite from each other-‐this is called (Anti-‐); (the big group on the front is anti to the big group on the back) Topics to review for the exam 1) Drawing Structures -‐Lewis, skeletal *OCTET RULE *lone pairs (only when asked for), formal charges -‐Alcohols, Amines, Ethers, Halides, Hydrocarbons *first 10 parents for hydrocarbons *Butyls-‐all 4 -‐Alphabetize: cyclo-‐ and iso-‐ -‐Don’t alphabetize: anything referring to a number *di, tri, tetra, sec-‐, tert-‐ 2) Acids and Bases -‐reactions *predict products, draw arrows, equilibrium (won’t give pKa) -‐pH vs pKa (pKa given) *pH>pKa *pH<pKa *pH=pKa -‐atomic size and electronegativity 3) Big Molecule -‐have to know primary, secondary, and tertiary -‐functional groups -‐molecular formula: sigma and pi bonds; single, double, and triple bonds; hybridization; orbitals
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