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All results from a given calculation for CH3COOCH3 (methyl acetate)

using model chemistry: B3PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31+G**
 hartrees
Energy at 0K-268.304077
Energy at 298.15K-268.310740
Nuclear repulsion energy180.945026
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B3PW91/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3197 3069 4.72      
2 A' 3189 3062 12.59      
3 A' 3075 2952 4.48      
4 A' 3071 2948 29.20      
5 A' 1824 1752 282.97      
6 A' 1498 1438 10.18      
7 A' 1474 1415 27.46      
8 A' 1469 1411 14.51      
9 A' 1399 1343 71.37      
10 A' 1290 1238 327.08      
11 A' 1207 1159 0.76      
12 A' 1089 1046 59.16      
13 A' 992 952 1.32      
14 A' 869 834 19.73      
15 A' 646 620 5.74      
16 A' 422 406 5.55      
17 A' 280 269 13.60      
18 A" 3156 3030 18.14      
19 A" 3150 3024 3.50      
20 A" 1485 1425 10.66      
21 A" 1476 1417 9.48      
22 A" 1173 1127 0.80      
23 A" 1061 1019 7.30      
24 A" 608 584 5.30      
25 A" 183 176 8.00      
26 A" 126 121 0.33      
27 A" 26 25 0.30      

Unscaled Zero Point Vibrational Energy (zpe) 19717.6 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 18930.9 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B3PW91/6-31+G**
ABC
0.34027 0.13885 0.10240

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.120 1.498 0.000
C2 0.000 0.493 0.000
O3 -1.183 0.754 0.000
O4 0.479 -0.768 0.000
C5 -0.509 -1.806 0.000
H6 0.703 2.505 0.000
H7 1.751 1.354 0.881
H8 1.751 1.354 -0.881
H9 0.049 -2.742 0.000
H10 -1.140 -1.735 0.890
H11 -1.140 -1.735 -0.890

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.50412.42012.35513.68321.08941.09391.09394.37244.04294.0429
C21.50411.21181.34952.35472.13062.14152.14153.23532.65602.6560
O32.42011.21182.25412.64712.57373.12263.12263.70662.64322.6432
O42.35511.34952.25411.43253.28072.62742.62742.01932.08452.0845
C53.68322.35472.64711.43254.47753.98423.98421.08981.09291.0929
H61.08942.13062.57373.28074.47751.78831.78835.28674.70734.7073
H71.09392.14153.12262.62743.98421.78831.76274.52244.23114.5868
H81.09392.14153.12262.62743.98421.78831.76274.52244.58684.2311
H94.37243.23533.70662.01931.08985.28674.52244.52241.79441.7944
H104.04292.65602.64322.08451.09294.70734.23114.58681.79441.7794
H114.04292.65602.64322.08451.09294.70734.58684.23111.79441.7794

picture of methyl acetate state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 125.676 C1 C2 O4 111.121
C2 C1 H6 109.432 C2 C1 H7 110.026
C2 C1 H8 110.026 C2 O4 C5 115.616
O3 C2 O4 123.204 O4 C5 H9 105.569
O4 C5 H10 110.540 O4 C5 H11 110.540
H6 C1 H7 109.988 H6 C1 H8 109.988
H7 C1 H8 107.359 H9 C5 H10 110.591
H9 C5 H11 110.591 H10 C5 H11 108.986
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.553      
2 C 0.397      
3 O -0.451      
4 O -0.270      
5 C -0.230      
6 H 0.197      
7 H 0.196      
8 H 0.196      
9 H 0.165      
10 H 0.177      
11 H 0.177      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.657 -1.015 0.000 1.943
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.537 -2.991 0.000
y -2.991 -32.445 0.000
z 0.000 0.000 -29.343
Traceless
 xyz
x 0.357 -2.991 0.000
y -2.991 -2.506 0.000
z 0.000 0.000 2.148
Polar
3z2-r24.296
x2-y21.909
xy-2.991
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 118.974
(<r2>)1/2 10.908