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

using model chemistry: HF/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/SDD
 hartrees
Energy at 0K-266.755137
Energy at 298.15K-266.762083
Nuclear repulsion energy179.971065
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 HF/SDD
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' 3387 3050 28.22      
2 A' 3363 3028 16.29      
3 A' 3255 2930 40.30      
4 A' 3235 2913 7.73      
5 A' 1864 1679 329.62      
6 A' 1648 1484 10.38      
7 A' 1623 1461 30.58      
8 A' 1613 1452 18.75      
9 A' 1570 1414 39.60      
10 A' 1408 1268 443.30      
11 A' 1313 1182 0.32      
12 A' 1184 1066 93.22      
13 A' 1068 962 26.46      
14 A' 892 803 22.36      
15 A' 678 611 17.09      
16 A' 439 396 7.44      
17 A' 277 249 19.19      
18 A" 3352 3018 41.55      
19 A" 3320 2989 15.16      
20 A" 1642 1478 11.68      
21 A" 1628 1466 13.98      
22 A" 1277 1150 2.49      
23 A" 1203 1083 15.50      
24 A" 652 587 20.24      
25 A" 184 166 15.43      
26 A" 131 118 0.96      
27 A" 99 90 0.36      

Unscaled Zero Point Vibrational Energy (zpe) 21152.5 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 19045.7 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 HF/SDD
ABC
0.34036 0.13464 0.10003

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/SDD

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.123 1.510 0.000
C2 0.000 0.515 0.000
O3 -1.189 0.782 0.000
O4 0.453 -0.760 0.000
C5 -0.492 -1.861 0.000
H6 0.724 2.512 0.000
H7 1.743 1.358 0.874
H8 1.743 1.358 -0.874
H9 0.112 -2.751 0.000
H10 -1.113 -1.817 0.882
H11 -1.113 -1.817 -0.882

Atom - Atom Distances (Å)
  C1 C2 O3 O4 C5 H6 H7 H8 H9 H10 H11
C11.50112.42412.36703.73891.07781.08191.08194.37994.10484.1048
C21.50111.21831.35282.42662.12422.12442.12443.26782.72982.7298
O32.42411.21832.25232.73322.57913.11303.11303.76472.74492.7449
O42.36701.35282.25231.45193.28262.62912.62912.02042.08552.0855
C53.73892.42662.73321.45194.53914.01574.01571.07581.07951.0795
H61.07782.12422.57913.28264.53911.76971.76975.29824.78404.7840
H71.08192.12443.11302.62914.01571.76971.74724.50664.27054.6173
H81.08192.12443.11302.62914.01571.76971.74724.50664.61734.2705
H94.37993.26783.76472.02041.07585.29824.50664.50661.77571.7757
H104.10482.72982.74492.08551.07954.78404.27054.61731.77571.7641
H114.10482.72982.74492.08551.07954.78404.61734.27051.77571.7641

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 125.788 C1 C2 O4 111.967
C2 C1 H6 109.816 C2 C1 H7 109.593
C2 C1 H8 109.593 C2 O4 C5 119.761
O3 C2 O4 122.245 O4 C5 H9 105.150
O4 C5 H10 110.068 O4 C5 H11 110.068
H6 C1 H7 110.053 H6 C1 H8 110.053
H7 C1 H8 107.703 H9 C5 H10 110.949
H9 C5 H11 110.949 H10 C5 H11 109.582
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.638      
2 C 0.590      
3 O -0.428      
4 O -0.502      
5 C -0.298      
6 H 0.218      
7 H 0.217      
8 H 0.217      
9 H 0.204      
10 H 0.210      
11 H 0.210      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.854 -1.209 0.000 2.213
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.468 -3.682 0.000
y -3.682 -33.115 0.000
z 0.000 0.000 -29.433
Traceless
 xyz
x -0.194 -3.682 0.000
y -3.682 -2.664 0.000
z 0.000 0.000 2.859
Polar
3z2-r25.718
x2-y21.647
xy-3.682
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.691 0.057 0.000
y 0.057 6.515 0.000
z 0.000 0.000 3.871


<r2> (average value of r2) Å2
<r2> 121.448
(<r2>)1/2 11.020