Week 3 - shapes of atoms/molecules, trans/cis, Newman projections, saturated/unsaturated, and how we see
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39 Terms
sp2 atoms shape
2D
sp3 atoms shape
3D
wedge bond
toward us
dashed bond
away from us
tetrahedral
sp3
4 things
trigonal pyramidal
sp3
3 things
trigonal planar
sp2
3 things
interacting
how two molecules stick together
torsion angles
anti
gauche
eclipse
most stable newman projection
anti
anti degree
180
gauche degree
60
eclipse degree
0
single bonds are always doing what
rotating
ignore what gouche interactions
hydrogen ones
what puts a kink in the chain
gauches
what bond can’t rotate
double bond
hydrogen on opposite sides
‘E’ or trans
hydrogen on same side
‘Z’ or cis
steric repulsion
electron clouds repellent each other
what functional group does triglycerides have
esters
hydrogenation
add hydrogen to double bond to break it
how to name the fat
omega…
count from bottom toll double bond
chains are usually what kind of numbers
even
partial hydrogenation makes
a semisolid
saturation
single bonds
more H
unsaturated
double bonds
less H
what are two ways energy is thought of
waves and photons
when can a photon be absorbed
when photon matches homo-lumo difference in energy of a proton can be absorbed
what kind of gap matches the energy of visible light
small homo-lumo gap
how to figure out what color is absorbed and what is shown
the color opposite of one another
what makes a smaller homo-lumo gap
a lot of unsaturation
in what states are molecules more reactive
exited state
what protein hooks onto a cis
opsin
steps of seeing
photon in absorbed by cis with the protein
exited state…double bond breaks
relaxes turning into a trans with the protein
trans drops of protein
what happens if blinded by light
overwhelmed with all the changes
need to wait till more cis-retinal is formed again
how many types of opsin
three
stereocenter
bonded to four different things
what makes it not a sterocenter
bonded to less than four things
don’t have 4 different things
does resonance
Note 
Flashcards (27)