NMR Spectroscopy Flashcards

1
Q

Primary alkyl (R-CH3)

A

0.8-1.0

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2
Q

Secondary Alkyl (R-CH2-R)

A

1.2-1.4

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3
Q

Tertiary Alkyl (R3-CH)

A

1.4-1.7

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4
Q

Allylic Alkyl (attached to a double-bonded C)

A

1.6-1.9

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5
Q

Benzylic Alkyl (attached to a benzene ring)

A

2.2-2.5

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6
Q

Ketone

A

2.1-2.6

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7
Q

Alkyne

A

1.7-3.1

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8
Q

Chloroalkane

A

3.6-3.8

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9
Q

Bromoalkane

A

3.4-3.6

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10
Q

Iodoalkane

A

3.1-3.3

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11
Q

Next to an Ether

A

3.3-3.9

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12
Q

Next to an Alcohol

A

3.3-4.0

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13
Q

Terminal Alkene

A

4.6-5.0

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14
Q

Internal Alkene

A

5.2-5.7

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15
Q

Aromatic H

A

6.0-9.5

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16
Q

Aldehyde

A

9.5-9.9

17
Q

Hydroxide

A

0.5-5.0

18
Q

Thiol

A

0.5-5.0

19
Q

Amine

A

0.5-5.0

20
Q

How does electronegativity of a haloalkane affect chemical shift?

A

Higher electronegativity = More deshielded = Higher chemical shift

21
Q

How does substitution of a haloalkane affect chemical shift?

A

More halogens = higher chemical shift
Further from halogen(s) = lower chemical shift