Structural isomerism

Structural isomerism:

same molecular formula but different structural formula

Isomers: molecules w the same c... ... but different s...

chemical formula, structure

Positional isomerism: same … …, but different p…

Functional group isomerism: same … … but different … …

Chain isomerism: different … … …

functional groups, position, molecular formula, functional groups, carbon chain lengths

Positional isomerism: same ... ... but different p...

functional groups, position

Positional isomerism: butanol

butan-1-ol: OH can be at ... or ...

butan-2-ol: OH can be on ... or ...

start, end, top, bottom

Positional isomerism: propanol

1. ?

2. ?

propan-1-ol, propan-2-ol

Positional isomerism: chloropropane

1. ?

2. ?

1-chloropropane, 2-chloropropane

Positional isomerism: dichloropropane

1.

2.

3.

4.

1,1 dichloropropane, 1,2 dichloropropane, 1,3 dichloropropane, 2,2 dichloropropane

Functional group isomerism: same m... ... but different ... ...

molecular formula, functional groups

Can turn aldehyde into:

ketone

Can turn carboxylic acid into:

ester

Functional group isomerism:

pent-2-ene:

butanoic acid:

petan-3-one:

cyclopentane, methyl propanoate, pentanal

Chain isomerism: different c... c... l...

(straight vs branched)

carbon chain length

Chain isomerism: butane -> ?

2-methyl propane

Chain isomerism: pentane

1.

2.

2-methyl butane, 2,2-dimethyl propane