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Summary Orgo 2223 FINAL Notes: ALL LECTURES

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Course
Organic Chemistry 2223 (2223)

Institution
University Of Western Ontario (UWO )

My exam notes for Organic Chemistry 2223 cover all the lecture content; TOPIC 1: Colours and Chromophores TOPIC 2: Cellular Structure and Function TOPIC 3: Amino Acids & Proteins TOPIC 4: Carbohydrates TOPIC 5: Lipids TOPIC 6: Nucleic Acids TOPIC 7: Pharmaceutical Drugs PLUS A BONUS!!!...

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Uploaded on August 2, 2023
Number of pages 83
Written in 2022/2023
Type Summary

organic chem
2223
orgo 2223
organic chem 2223
chromophores
radiative transitions
conjugation
hydrolysis
amino acids
amino acid analysis
ninhydrin
edman degradation
chymotrypsin
adol
killiani
biosynthe

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,TOPIC ONE : COLOURS 13 CHROMOPHORE S

Precept ion of colour
↳
white light consist of all colours
↳ colours ( wavelengths) we observe
of
is the visible light region
the electromagnetic spectrum

subtractive colour Model

that is not
•

Colour is absorbed
subtracted
"

reflected
"
→

light perceived
'

reflected is

as complement of the

absorbed colour

BLACK All colours absorbed WHITE absorbed
nothing
=
=

MONOCHROMATIC LIGHT

↳
of wavelength
Light compromising one colour or

↳
If ABSORBED =
Dimmer colour

↳ If REFLECTED =
Bright colour

,Measuring Colour Absorption
wavelengths of colour
↳
molecules absorbs certain

↳ measured by UV Visible absorption spectroscopy
-

① Monochrome ter diffracts the light source

② Light split into reference and incident beam

into two equal beams

③ sample absorbs certain wavelengths ,
remaining transmitted

④ Intensity of transmitted beam is dimmer than reference
⑤ Intensity difference between two beams measured to

determine amount of light absorption

chromophore s
structural feature possessed by
'

a molecules

functional of light
'

molecules that absorb
groups or
parts
charged groups
↳
polar or

Have extended
f¥k#r
'

conjugation
connected systems
pi
↳

, Photo Processes
physical
Molecular Orbital Theory
↳
two atomic orbitals to make molecular orbitals
sp )
> }
( sp ,
sp ,

↳
Lowest MO filled first
energy
-

orbital LOW ENERGY more stable Nt ~
Bonding
= /

t Anti -

Bonding orbital = HIGH ENERGY ,
less stable wt w
node

↳
Lowest -

energy MO

that doesnta LUMO →

LUMO is Lowest unoccupied
molecular orbitals

Highest
↳
MO
energy
-

with one or more e-

HOMO is
Highetcpied HOMO →

molecular orbital

of
Absorption Light
-

when a molecule absorbs light , an electron is excited

from HOMO to LUMO
-

HOMO are electrons in orbitals of IT systems
p
-

HOMO
wmo

§

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