Spectrometric
ldentification of
Organic Compounds
,
,Answers for Student Exercises 1 .1 to 1 .5 1
Atom Type # of Atoms Mass Total Mass
Hydrogen 22 1.00783 22.17226
a
Carbon 10 12.00000 120.00000
Nitrogen 0 14.0031 0.00000
3-ethyloctane Oxygen 0 15.9949 0.00000
C10H22 Sulfur 0 31.9721 0.00000
CnHmXxNyOz IHD Bromine 0 78.9183 0.00000
Index = (n) - (m/2) - (x/2) + (y/2) + 1 = 0 Exact Mass 142.17226
- (C2Hs•) +
[ r Rule 3
..
[ r - (CH2=CH2) +
+
Rule 9
b Atom Type # of Atoms Mass Total Mass
Hydrogen 18 1.00783 18.14094
Carbon 10 12.00000 120.00000
Nitrogen 0 14.0031 0.00000
3-butylcyclohex-1-ene Oxygen 0 15.9949 0.00000
C10H18 Sulfur 0 31.9721 0.00000
CnHmXxNyOz IHD Bromine 0 78.9183 0.00000
Index = (n) - (m/2) - (x/2) + (y/2) + 1 = 2 Exact Mass 138.14094
[
[
rr or
- (C4H9 )
•
Rule 5 and 6 .. 0
Rule 6
.-.
r r .. r
- (CH)=CH
- 7 )
[
r r - (C3H7•) \_)/ ..
, @SOLUTIONSSTUDY
+
• \ /
+
Rule 3
,Answers for Student Exercises 1 .1 to 1 .5 3
0 Atom Type # of Atoms Mass Total Mass
Hydrogen 18 1.00783 18.14094
Carbon 13 12.00000 156.00000
c
Nitrogen 0 14.0031 0.00000
2-methyl-1-phenylhexan- l-one Oxygen 1 15.9949 15.99490
C13H1sO Sulfur 0 31.9721 0.00000
CnHmXxNyOz IHD Bromine 0 78.9183 0.00000
Index = (n) - (m/2) - (x/2) + (y/2) + 1 = 5 Exact Mass 190.13584
o+
Rule 8
+ +
Rule 9 \=I rH
. ---
\=I
H
/
- (CO)
O
+
I
Rule 8+9
Atom Type # of Atoms Mass Total Mass
d Hydrogen 22 1.00783 22.17226
Carbon 11 12.00000 132.00000
(E)-undec-3-ene
C11H22 Nitrogen 0 14.0031 0.00000
Oxygen 0 15.9949 0.00000
Sulfur 0 31.9721 0.00000
CnHmXxNyOz IHD Bromine 0 78.9183 0.00000
Index = (n) - (m/2) - (x/2) + (y/2) + 1 = 1 Exact Mass 154.17226
+
+
[ (;
.
•
3
..
r -Rule
(CH 5)
•
+
0
r. -(
C5H13)
Rule 5
.. +
+
- (C7H14) +
Rule 9
, @SOLUTIONSSTUDY
Atom Type # of Atoms Mass Total Mass
e Hydrogen 18 1.00783 18.14094
Carbon 12 12.00000 144.00000
Nitrogen 0 14.0031 0.00000
l-(hexan-2-yl)benzene Oxygen 0 15.9949 0.00000
C12 H18
Sulfur 0 31.9721 0.00000
CnHmXxNyOz IHD Bromine 0 78.9183 0.00000
Index = (n) - (m/2) - (x/2) + (y/2) + 1 = 4 Exact Mass 162.14094
.
+
+
•3
- (CH )
Rule 7 ..
.
+
- (C4H9 )
Rule 7
•
.. 0)
t
.
+ - (C4H3 )
Rule 9 .. [Cf]
Atom Type # of Atoms Mass Total Mass
Hydrogen 16 1.00783 16.12528
Carbon 7 12.00000 84.00000
Nitrogen 0 14.0031 0.00000
heptan-2-ol
Oxygen 1 15.9949 15.99490
C7H160
Sulfur 0 31.9721 0.00000
CnHmXxNyOz IHD Bromine 0 78.9183 0.00000
Index = (n) - (m/2) - (x/2) + (y/2) + 1= 0 Exact Mass 116.12018
•
•+H
- (CsH11 )
Rule 8
.. + H
.. OH
H
- (CH;) +
•+ Rule 8
H
- (Ii)
Rule 8
.. OH
k•+
- (H70)
Rule 9 .. +
,Answers for Student Exercises 1 .1 to 1 .5 5
Atom Type # of Atoms Mass Total Mass
Hydrogen 22 1.00783 22.17226
COOH Carbon 11 12.00000 132.00000
Nitrogen 0 14.0031 0.00000
3,5,7-trimethyloctanoic acid
Oxygen 2 15.9949 31.98980
C11H2202
Sulfur 0 31.9721 0.00000
CnHmXxNyOz IHD Bromine 0 78.9183 0.00000
Index = (n) - (m/2) - (x/2) + (y/2) + 1 = 1 Exact Mass 186.16206
- (OH•)
Rule 8
+
• 0 0
OH
Rule 8
..
- (C10H21 ) Ill
'OcH II
+C...,
OH
+,..,..H +
0 OH
- (C9H13)
Rule 9
.. HO
A..... • HO
HO
Atom Type # of Atoms Mass Total Mass
Hydrogen 14 1.00783 14.10962
h
OH Carbon 6 12.00000 72.00000
Nitrogen 0 14.0031 0.00000
hexan-1-ol
Oxygen 1 15.9949 15.99490
C6H140
Sulfur 0 31.9721 0.00000
CnHmXxNyOz IHD Bromine 0 78.9183 0.00000
Index = (n) - (m/2) - (x/2) + (y/2) + 1 = 0 Exact Mass 102.10452
H
I •
Rule 9
- (CsH1•1 )
OH
•+ Rule 8
•
- (H ) +
OH ··
OH
•+ Rule 8
,
,Answers for Student Exercises 1.1 to 1.5 5
Atom Type # of Atoms Mass Total Mass
Hydrogen 18 1.00783 18.14094
Carbon 8 12.00000 96.00000
OH
Nitrogen 0 14.0031 0.00000
2-methylheptan-2-ol Oxygen 1 15.9949 15.99490
C8H180
Sulfur 0 31.9721 0.00000
CnHmXxNyOz IHD Bromine 0 78.9183 0.00000
Index = (n) - (m/2) - (x/2) + (y/2) + 1 = 0 Exact Mass 130.13584
•
- (CsH11 )
OH
•+ Rule 8
- (CH• )
3
OH OH
•+ Rule 8
H
I•
J7 Rule 8
Atom Type
Hydrogen
Rule 8
# of Atoms
16
..
- (CH2= C (CH3h)
Mass
1.00783
Total Mass
16.12528
s Carbon 7 12.00000 84.00000
butyl(propy1)sulfane Nitrogen 0 14.0031 0.00000
C7H16S Oxygen 0 15.9949 0.00000
Sulfur 1 31.9721 31.97210
CnHmXxNyOz IHD Bromine 0 78.9183 0.00000
Index = (n) - (m/2) - (x/2) + (y/2) + 1= 0 Exact Mass 132.09738
Rule 8
=SH
+
Rule 9
s
Rule 8 +
, @SOLUTIONSSTUDY
Atom Type # of Atoms Mass Total Mass
k
Hydrogen 20 1.00783 20.15660
Carbon 13 12.00000 156.00000
Nitrogen 0 14.0031 0.00000
(2-hexylphenyl)methanol Oxygen 1 15.9949 15.99490
C13H200 Sulfur 0 31.9721 0.00000
CnHmXxNyOz IHD Bromine 0 78.9183 0.00000
Index = (n) - (m/2) - (x/2) + (y/2) + 1 = 4 Exact Mass 192.15150
or
- (CsH1•1 )
..
r
Rule 7
- (OH•)
Rule 7 ..
- (H)O)
Rule 9
..
0 Atom Type # of Atoms Mass Total Mass
'd U ..,,::. ..,,::.
N0
(4-nitrophenyl )(phenyl)methanone
2
Hydrogen
Carbon
Nitrogen
Oxygen
9
13
1
3
1.00783
12.00000
14.0031
15.9949
9.07047
156.00000
14.00310
47.98470
C 13H9 N03
Sulfur 0 31.9721 0.00000
CnHmXxNyOz IHD Bromine 0 78.9183 0.00000
Index = (n) - (m/2) - (x/2) + (y/2) + 1 = 10 Exact Mass 227.05827
- (C5H4NO;)
.. d+"::
0
Rule 7&8
0N0 2
d+ - (CO)
Rule 8&9 o+
+u
0
(C5H5 )
• .. I "::
-
Rule 7&8
N0 2 N0 2