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

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-268.351449
Energy at 298.15K-268.358139
Nuclear repulsion energy181.380301
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 B3PW91/6-311G*
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' 3178 3060 10.34      
2 A' 3175 3057 18.03      
3 A' 3064 2950 6.48      
4 A' 3062 2947 27.59      
5 A' 1838 1770 253.49      
6 A' 1514 1457 9.84      
7 A' 1486 1430 24.48      
8 A' 1481 1426 14.33      
9 A' 1403 1351 69.48      
10 A' 1282 1234 325.89      
11 A' 1219 1173 0.91      
12 A' 1090 1050 68.36      
13 A' 994 957 1.72      
14 A' 872 839 19.79      
15 A' 651 627 5.74      
16 A' 423 407 5.96      
17 A' 283 273 12.20      
18 A" 3139 3022 27.00      
19 A" 3131 3014 7.27      
20 A" 1498 1443 10.50      
21 A" 1486 1431 9.73      
22 A" 1184 1140 0.64      
23 A" 1069 1029 8.27      
24 A" 610 587 5.30      
25 A" 182 175 7.06      
26 A" 129 124 0.26      
27 A" 30 29 0.49      

Unscaled Zero Point Vibrational Energy (zpe) 19737.4 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 19001.2 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 B3PW91/6-311G*
ABC
0.34204 0.13964 0.10297

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.131 1.484 0.000
C2 0.000 0.492 0.000
O3 -1.173 0.761 0.000
O4 0.472 -0.770 0.000
C5 -0.524 -1.795 0.000
H6 0.729 2.495 0.000
H7 1.762 1.335 0.879
H8 1.762 1.335 -0.879
H9 0.023 -2.736 0.000
H10 -1.155 -1.719 0.888
H11 -1.155 -1.719 -0.888

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.50362.41402.34843.67251.08821.09271.09274.36234.03374.0337
C21.50361.20291.34812.34652.13142.14192.14193.22812.64842.6484
O32.41401.20292.24702.63652.57403.11693.11693.69502.63432.6343
O42.34841.34812.24701.42893.27572.62122.62122.01592.08202.0820
C53.67252.34652.63651.42894.46943.97443.97441.08821.09151.0915
H61.08822.13142.57403.27574.46941.78481.78485.27834.70114.7011
H71.09272.14193.11692.62123.97441.78481.75874.51324.22344.5782
H81.09272.14193.11692.62123.97441.78481.75874.51324.57824.2234
H94.36233.22813.69502.01591.08825.27834.51324.51321.79081.7908
H104.03372.64842.63432.08201.09154.70114.22344.57821.79081.7754
H114.03372.64842.63432.08201.09154.70114.57824.22341.79081.7754

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 125.871 C1 C2 O4 110.752
C2 C1 H6 109.602 C2 C1 H7 110.169
C2 C1 H8 110.169 C2 O4 C5 115.310
O3 C2 O4 123.377 O4 C5 H9 105.631
O4 C5 H10 110.686 O4 C5 H11 110.686
H6 C1 H7 109.848 H6 C1 H8 109.848
H7 C1 H8 107.173 H9 C5 H10 110.490
H9 C5 H11 110.490 H10 C5 H11 108.842
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.723      
2 C 0.409      
3 O -0.355      
4 O -0.302      
5 C -0.476      
6 H 0.253      
7 H 0.250      
8 H 0.250      
9 H 0.228      
10 H 0.233      
11 H 0.233      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.503 -0.984 0.000 1.797
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.301 -2.750 0.000
y -2.750 -31.773 0.000
z 0.000 0.000 -29.075
Traceless
 xyz
x 0.123 -2.750 0.000
y -2.750 -2.085 0.000
z 0.000 0.000 1.962
Polar
3z2-r23.923
x2-y21.472
xy-2.750
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> 118.268
(<r2>)1/2 10.875