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Alkane and Newman Projections

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In class organic chemistry notes going over alkanes, Newman's projections, enantiomers, and conformers (staggered and eclipsed)

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alkanes

single bonds only




alkane alkene alkyne




=
# of C # of H name

methane


·
s
ethane
Maru
Propane

butane
Eats
10

12 pentane Peas

6 14 nexane Before

Playing

what happens for branched alkenes ? Hockey




-
& carbons -
total
key step !

- identify longest carbon chain
6 carbons long , "hexane"
,
-
methyl group on the 3rd carbon


NAME :
3-methyl hexane
3rd
carbon





this is also M



3-methyl hexane
T

4th carbon
5th
carbon

Octane
methyl
e + hy1



3 . 5-methyl-4-ethyl-octane

, structural isomers ("constitutional isomers" (


same molecular formula different
, single-bond
connectivity

CsHiz (pentane)




how does nomenclature help distinguish structural
isomers ?




nexane 3-methyl
Pentane




2-methyl 2-methyl
pentane pentane

-
enantiomers

(mirror images (




this is the end of

Midterm 1 material

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October 30, 2025
Number of pages
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Written in
2025/2026
Type
Class notes
Professor(s)
Chang
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