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Organic Chem > functional groups > Flashcards

functional groups Flashcards

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1
Q

what type of bond will produce a medium IR response at 1640-1560

A

N-H bend from amines/amides

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2
Q
  • what type of functional group is this?
  • what is the X group?
  • what are the restrictions on the R group
A
  • alkyl halide
  • x is the halogen
  • R can be H or C but no C=O
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3
Q

a large smooth peak between 3700 and 3200 is indicative of what functional group

A

alcohol

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4
Q
  • what type of functional group is this?
  • what are the restrictions on the R groups
A
  • ketone
  • the R groups have to be C
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5
Q

what type of bond will produce a very strong IR response between 1800-1680

A

all C=O groups

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6
Q
  • what functional group is this?
  • what are the restrictions on the R groups
A
  • amide
  • can be C or H
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7
Q

draw benzaldehyde

A
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8
Q

what functional group will show up on IR with a weak, sharp peak at 2820 and 2720

A

aldehydes

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9
Q
  • what functional group is this?
  • what are the restrictions on the R group
A
  • alkene
  • none, can be C or H
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10
Q
A

phenol

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11
Q

what type of bond will produce a sharp, weak to medium IR response between 2260 and 2150

A

C_=C or C=_N from alkynes or nitriles

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12
Q

what type of bond will produce a medium to strong IR response between 1670 and 1450

A

all C=C groups

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13
Q

draw an ether

A
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14
Q

what IR responses are associated with alcohol groups

A
  1. a strong broad peak at 3400-3200 (O-H stretch)
  2. medium strong peak at 3000-2850 (C-H stretch)
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15
Q

what type of bond will produce a strong, sharp IR response at 3300

A

= C-H stretch from alkynes

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16
Q

draw a ketone

A
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17
Q

draw pyridine

A
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18
Q

what IR responses are associated with nitriles

A
  1. a sharp, weak to medium peak at 2260-2150 (C_=_N stetch)
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19
Q

draw benzoic acid

A
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20
Q
A

nitrile

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21
Q

what IR responses are associated with alkenes

A
  1. a medium sharp peak at 3100-3000
  2. a variable peak at 1670
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22
Q
A

benzoic acid

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23
Q

draw aniline

A
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24
Q

what IR responses are associated with alkynes

A
  1. a strong sharp peak at 3300 (C_=_C-H stretch)
  2. a sharp weak to medium peak at 2260 (C_=_C stretch
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25
Q

draw an alkyl halide

A
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26
Q
  • what type of functional group is this
  • what are the restrictions on the R groups
A
  • ether
  • R will be a C with three R’s (can be C or H, but not C=O)
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27
Q

what IR responses are associated with aldehydes

A
  1. two weak and sharp responses at 2820 and 2720 (C-H stretch)
  2. a very strong response at 1735-1715 (C=O stretch)
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28
Q

draw a thiol

A
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29
Q
  • what type of functional group is this?
  • what are the restrictions on R groups
A
  • alkyne
  • none, can be C or H
30
Q

draw acetephenone

A
31
Q
A

toluene

32
Q

what five functional groups do not allow R to be C=O

A

alcohols, thiols, esters, alkyl halides, ethers

33
Q

draw an aldehyde

A
34
Q

draw styrene

A
35
Q

draw an epoxide

A
36
Q
  • what type of functional group is this?
  • what are the restrictions on the R groups
A
  • aldehyde
  • none, can be H or C
37
Q

what IR band is specific to the C=O bond on an ester

A

1745-1725

38
Q
  • what type of functional group is this
  • what are the restrictions on the R groups
A
  • alcohol
  • R can be C or H, but it can’t be C=O
39
Q
  • what function group is this?
  • what are the restrictions on the R groups
A
  • thiol
  • can be C or H, but not C=O
40
Q
  • what type of functional group is this?
  • what are the restrictions on R groups
A
  • epoxides
  • none, R can be C or O
41
Q

what IR responses are associated with alkyl groups

A
  1. medium sharp responses between 3000-2850 (C-H stretch)
  2. Strong response between 1465-1415
42
Q
  • what type of functional group is this?
  • what ran be the R group?
A
  • a carboxylic acid
  • it can be an C or H
43
Q

draw an amine

A
44
Q
A

benzaldehyde

45
Q

draw an alcohol

A
46
Q

what type of bond will produce a weak and sharp IR response at 2820 and 2720

A

C-H stretch from an aldehyde

47
Q
A

styrene

48
Q

what type of bond will produce a strong, broad IR response at 3400-3200

A

O-H stretch from alcohol or phenol

49
Q

what type of bond will produce a medium sharp IR response 3100-3000

A

=C-H stretch from alkenes and benzene

50
Q

what IR responses are associated with carboxylic acids

A
  1. a very broad peak between 3400-2900 (O-H stretch)
  2. a very strong peak between 1750-1710 (C=O stretch)
51
Q
A

aniline

52
Q

draw an alkyne

A
53
Q
A

acetephenone

54
Q
  • what type of functional group is these
  • what is the S
A
  • aromatic rings
  • a heteroatom with at least one nonbonding pair
55
Q

draw toluene

A
56
Q

what is this

A

pyridine

57
Q
  • what type of functional group is this?
  • what are the restrictions are the R group
A
  • amine
  • R can be H or C, but not C=O
58
Q

what type of bond will produce medium double banded IR response at 3550-3000

A

N-H stretch from a primary amine/amide

59
Q

draw an alkene

A
60
Q

what are cyclic amides called

A

lactams

61
Q

draw phenol

A
62
Q

what IR band is specific to the C=O of ketones

A

1720-1710

63
Q

what IR responses are associated with primary amines/amides

A
  1. a double spike between 3550-3000
  2. a medium peak between 1640-1560
64
Q
  • what type of functional group is this?
  • is R a C or H?
  • is R’ a C or H?
A
  • an ester
  • it can be a C or H
  • it must be C, and it can’t be double bonded to an O
65
Q

draw nitrile

A
66
Q

what type of bond will produce a very broad IR response at 3400-2900

A

O-H stretch from a carboxylic acid

67
Q

draw an ester

A
68
Q

what IR band is specific to the C=O of amides

A

1700-1680

69
Q

draw an amide

A
70
Q

what type of bond will produce a medium strong IR response between 3000-2850

A

C-H stretch from alkyl groups

71
Q

what type of bond will produce a medium IR response at 3450-3000

A

N-H stretch from a secondary amine/amide

72
Q

draw a carboxylic acid

A

Organic Chem (8 decks)

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