functional groups Flashcards
1
Q
what type of bond will produce a medium IR response at 1640-1560
A
N-H bend from amines/amides
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
3
Q
a large smooth peak between 3700 and 3200 is indicative of what functional group
A
alcohol
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
5
Q
what type of bond will produce a very strong IR response between 1800-1680
A
all C=O groups
6
Q
- what functional group is this?
- what are the restrictions on the R groups
A
- amide
- can be C or H
7
Q
draw benzaldehyde
A
8
Q
what functional group will show up on IR with a weak, sharp peak at 2820 and 2720
A
aldehydes
9
Q
- what functional group is this?
- what are the restrictions on the R group
A
- alkene
- none, can be C or H
10
Q
A
phenol
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
12
Q
what type of bond will produce a medium to strong IR response between 1670 and 1450
A
all C=C groups
13
Q
draw an ether
A
14
Q
what IR responses are associated with alcohol groups
A
- a strong broad peak at 3400-3200 (O-H stretch)
- medium strong peak at 3000-2850 (C-H stretch)
15
Q
what type of bond will produce a strong, sharp IR response at 3300
A
= C-H stretch from alkynes
16
Q
draw a ketone
A
17
Q
draw pyridine
A
18
Q
what IR responses are associated with nitriles
A
- a sharp, weak to medium peak at 2260-2150 (C_=_N stetch)
19
Q
draw benzoic acid
A
20
Q
A
nitrile
21
Q
what IR responses are associated with alkenes
A
- a medium sharp peak at 3100-3000
- a variable peak at 1670
22
Q
A
benzoic acid
23
Q
draw aniline
A
24
Q
what IR responses are associated with alkynes
A
- a strong sharp peak at 3300 (C_=_C-H stretch)
- a sharp weak to medium peak at 2260 (C_=_C stretch
25
draw an alkyl halide
26
* what type of functional group is this
* what are the restrictions on the R groups
* ether
* R will be a C with three R's (can be C or H, but not C=O)
27
what IR responses are associated with aldehydes
1. two weak and sharp responses at 2820 and 2720 (C-H stretch)
2. a very strong response at 1735-1715 (C=O stretch)
28
draw a thiol
29
* what type of functional group is this?
* what are the restrictions on R groups
* alkyne
* none, can be C or H
30
draw acetephenone
31
toluene
32
what five functional groups do not allow R to be C=O
alcohols, thiols, esters, alkyl halides, ethers
33
draw an aldehyde
34
draw styrene
35
draw an epoxide
36
* what type of functional group is this?
* what are the restrictions on the R groups
* aldehyde
* none, can be H or C
37
what IR band is specific to the C=O bond on an ester
1745-1725
38
* what type of functional group is this
* what are the restrictions on the R groups
* alcohol
* R can be C or H, but it can't be C=O
39
* what function group is this?
* what are the restrictions on the R groups
* thiol
* can be C or H, but not C=O
40
* what type of functional group is this?
* what are the restrictions on R groups
* epoxides
* none, R can be C or O
41
what IR responses are associated with alkyl groups
1. medium sharp responses between 3000-2850 (C-H stretch)
2. Strong response between 1465-1415
42
* what type of functional group is this?
* what ran be the R group?
* a carboxylic acid
* it can be an C or H
43
draw an amine
44
benzaldehyde
45
draw an alcohol
46
what type of bond will produce a weak and sharp IR response at 2820 and 2720
C-H stretch from an aldehyde
47
styrene
48
what type of bond will produce a strong, broad IR response at 3400-3200
O-H stretch from alcohol or phenol
49
what type of bond will produce a medium sharp IR response 3100-3000
=C-H stretch from alkenes and benzene
50
what IR responses are associated with carboxylic acids
1. a very broad peak between 3400-2900 (O-H stretch)
2. a very strong peak between 1750-1710 (C=O stretch)
51
aniline
52
draw an alkyne
53
acetephenone
54
* what type of functional group is these
* what is the S
* aromatic rings
* a heteroatom with at least one nonbonding pair
55
draw toluene
56
what is this
pyridine
57
* what type of functional group is this?
* what are the restrictions are the R group
* amine
* R can be H or C, but not C=O
58
what type of bond will produce medium double banded IR response at 3550-3000
N-H stretch from a primary amine/amide
59
draw an alkene
60
what are cyclic amides called
lactams
61
draw phenol
62
what IR band is specific to the C=O of ketones
1720-1710
63
what IR responses are associated with primary amines/amides
1. a double spike between 3550-3000
2. a medium peak between 1640-1560
64
* what type of functional group is this?
* is R a C or H?
* is R' a C or H?
* an ester
* it can be a C or H
* it must be C, and it can't be double bonded to an O
65
draw nitrile
66
what type of bond will produce a very broad IR response at 3400-2900
O-H stretch from a carboxylic acid
67
draw an ester
68
what IR band is specific to the C=O of amides
1700-1680
69
draw an amide
70
what type of bond will produce a medium strong IR response between 3000-2850
C-H stretch from alkyl groups
71
what type of bond will produce a medium IR response at 3450-3000
N-H stretch from a secondary amine/amide
72
draw a carboxylic acid
