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

using model chemistry: B1B95/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/6-311G**
 hartrees
Energy at 0K-268.350105
Energy at 298.15K-268.356757
Nuclear repulsion energy182.388139
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 B1B95/6-311G**
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' 3191 3063 6.59      
2 A' 3181 3054 16.27      
3 A' 3073 2950 2.62      
4 A' 3064 2942 27.23      
5 A' 1847 1773 253.63      
6 A' 1497 1437 7.89      
7 A' 1470 1411 30.86      
8 A' 1464 1406 17.51      
9 A' 1390 1335 82.89      
10 A' 1286 1235 311.42      
11 A' 1205 1157 1.33      
12 A' 1091 1047 64.00      
13 A' 990 950 1.72      
14 A' 876 841 19.01      
15 A' 652 626 6.47      
16 A' 419 403 6.12      
17 A' 280 269 12.48      
18 A" 3144 3019 5.86      
19 A" 3140 3015 22.77      
20 A" 1475 1416 11.00      
21 A" 1470 1411 8.25      
22 A" 1174 1127 0.89      
23 A" 1059 1017 7.65      
24 A" 607 582 5.25      
25 A" 181 174 7.04      
26 A" 92 88 0.06      
27 A" 45 43 0.55      

Unscaled Zero Point Vibrational Energy (zpe) 19681.0 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 18895.7 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 B1B95/6-311G**
ABC
0.34415 0.14058 0.10366

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.118 1.489 0.000
C2 0.000 0.490 0.000
O3 -1.174 0.745 0.000
O4 0.480 -0.766 0.000
C5 -0.515 -1.789 0.000
H6 0.705 2.494 0.000
H7 1.746 1.342 0.879
H8 1.746 1.342 -0.879
H9 0.029 -2.730 0.000
H10 -1.145 -1.711 0.886
H11 -1.145 -1.711 -0.886

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.49922.40932.34363.66271.08581.09021.09024.35734.01834.0183
C21.49921.20141.34462.33702.12372.13222.13223.22002.63452.6345
O32.40931.20142.24042.61902.56633.10713.10713.67732.61112.6111
O42.34361.34462.24041.42743.26722.61112.61112.01502.07832.0783
C53.66272.33702.61901.42744.45333.96103.96101.08621.08991.0899
H61.08582.12372.56633.26724.45331.78401.78405.26684.67804.6780
H71.09022.13223.10712.61113.96101.78401.75734.50554.20474.5599
H81.09022.13223.10712.61113.96101.78401.75734.50554.55994.2047
H94.35733.22003.67732.01501.08625.26684.50554.50551.78921.7892
H104.01832.63452.61112.07831.08994.67804.20474.55991.78921.7713
H114.01832.63452.61112.07831.08994.67804.55994.20471.78921.7713

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 125.940 C1 C2 O4 110.882
C2 C1 H6 109.445 C2 C1 H7 109.853
C2 C1 H8 109.853 C2 O4 C5 114.894
O3 C2 O4 123.178 O4 C5 H9 105.770
O4 C5 H10 110.576 O4 C5 H11 110.576
H6 C1 H7 110.134 H6 C1 H8 110.134
H7 C1 H8 107.399 H9 C5 H10 110.608
H9 C5 H11 110.608 H10 C5 H11 108.696
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.341      
2 C 0.312      
3 O -0.348      
4 O -0.314      
5 C -0.165      
6 H 0.152      
7 H 0.150      
8 H 0.150      
9 H 0.130      
10 H 0.137      
11 H 0.137      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.500 -0.931 0.000 1.765
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.411 4.504 0.000
y 4.504 -26.335 0.000
z 0.000 0.000 -28.998
Traceless
 xyz
x -4.745 4.504 0.000
y 4.504 4.370 0.000
z 0.000 0.000 0.375
Polar
3z2-r20.750
x2-y2-6.076
xy4.504
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.102 0.398 0.000
y 0.398 6.860 0.000
z 0.000 0.000 4.543


<r2> (average value of r2) Å2
<r2> 118.777
(<r2>)1/2 10.898