#organichemistry

[studynerdvana-blog]

Day 1...6 of MCAT studying. Organic chemistry. My class notes are a great help and so over the top. No wonder I got A's in orgo 1 and 2. Wish all of it stuck with me though.

[socomfortablyuncomfortable]

Chemistry and calligraphy; the two most aesthetic things on paper.

[40plusmcatclub-blog]

Stop withdrawing.

Earlier today I got through O.CHEM1. These are a few things I learned/was reminded of.

1) Molecular structures are more complicated than we think.

Electronegativity adds to electron withdrawal. Groups like F and Cl pull electron density away and create great nucleophiles, and great acids (because the acids are bound by weaker forces--because they were all pulled away--so the H can leave). The electronegative effect/inductive effect gets weaker with distance. So a group with a FCH2CH2NH2 makes a stronger base/weaker acid than a CH3CH2FNH2. {Also a lower pKa= stronger acid , and stronger acids/bases have weaker conjugates!}

2) Aromaticity is the queen of stability. 4n+2!

Aromatics make better acids because the resonance will make up for the deprotonation! And overall they are the queens of stability. 

3) Antibonding gets a * and its when opposites (opposite spins) try to attract and end up breaking. 

CHART OF LIFE. 

sp(1 sigma, 2 pi) =Triple Bond= 180 degrees, and linear

sp2(1 sigma, 1 pi)= Double bond( ANYTHING WITH A DOUBLE BOND), trigonal planer and 120 degrees.

sp3( 1 sigma) = Single bond( longest /weakest bond) ,tetrahedral, and 109.5 degrees.

And remember having lone pairs causes repulsion aka a smaller bond than listed above.

Steric hindrance sucks. Nobody wants to be near bulky bulk groups. Remember that cyclohexane LOVES to place its bulk on the sides ( equatorial-- not axial). The fatties have to hide next to him, while he carries the skinny peepz on top. 

E=epposite side (of the double bond C), Z=Zame Side (of the double bond)

And, you guys can follow me via twitter. https://twitter.com/osrmcat