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Structural Elucidation of an Ester Molecule by Infrared Spectroscopy

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Dwi Khusnul Afiah

Academic year: 2024

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(1)

Dwi Khusnul Afiah 1.

Desti Rina Wardani 2.

Vemi Rahmayani 3.

KELOMPOK 8

L O C A L L Y R O O T E D , G L O B A L L Y

R E S P E C T E D

u g m . a c . i d

22/494271/PA/21263

22/494873/PA/21289

22/505381/PA/21762

(2)

8

sp3 C-H C --- N

C=O ester

C-O stretch IHD = 2C + 2 + N - H - X

2 = 2(5) + 2 + 1 - 7 - 0

2 = 3

1240-1100 cm-1 2960-2890 cm-1

(3)

CH3

CH 2 -

CH 2

O - C -

O =

CH 2

---C -

N C

O =

- - O

CH3

-

(4)

CH 2

C - O -

O =

CH3

CH 2 - ---C -

N -

1 2 3 4 5

5 4

3

2

1

(5)

Struktur Kimia

CH 2

C - O -

O =

CH 3

CH 2 - --- C -

N -

etil sianoasetat

(6)

O-H

sp3 C-H C-O stretch

C-O stretch O-H

sp3 C-H bendsCH 2 CH3

15

bends IHD = 2C + 2 + N - H - X

2 = 2(3) + 2 + 0 - 8 - 0

2 = 0

(7)

CH 2-O-H CH 2-

CH 3 - CH 2

O-H CH 2

- CH 2

CH 3 -

t s m t

(8)

CH

3

- CH

2

- CH

2

- OH

1 2 3

1

3 2

(9)

Struktur Kimia

CH

3

- CH

2

- CH

2

- OH

1-propanol

(10)

17

sp³ C-H

c=o ester

c-o

c-c

c-o c-c

c=o ester

sp³ C-H

IHD = 2C + 2 + N - H - X 2

= 2(7) + 2 + 0 - 12 - 0 2

= 2

(11)

CH2-CH3

-C-CH2-C-

O-CH2-CH3

II O II

O

(12)

1 1 2 2

4 4

1

2

3

4

3

(13)

STRUKTUR KIMIA

Diethyl Malonate

or

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TERIMA KASIH

L O C A L L Y R O O T E D , G L O B A L L Y R E S P E C T E D

u g m . a c . i d

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