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All results from a given calculation for CH3COOH (Acetic acid)

using model chemistry: B3LYP/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/6-311+G(3df,2p)
 hartrees
Energy at 0K-229.180254
Energy at 298.15K-229.185073
Nuclear repulsion energy121.248643
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 B3LYP/6-311+G(3df,2p)
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' 3759 3635 61.56      
2 A' 3158 3053 4.51      
3 A' 3049 2948 1.54      
4 A' 1818 1758 345.05      
5 A' 1474 1426 16.82      
6 A' 1408 1362 45.88      
7 A' 1336 1292 34.78      
8 A' 1203 1164 215.04      
9 A' 999 966 74.50      
10 A' 858 830 3.94      
11 A' 586 567 37.40      
12 A' 424 410 4.66      
13 A" 3106 3004 3.60      
14 A" 1479 1431 8.78      
15 A" 1068 1033 7.55      
16 A" 668 646 91.96      
17 A" 546 528 25.07      
18 A" 74 72 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 13507.3 cm-1
Scaled (by 0.967) Zero Point Vibrational Energy (zpe) 13061.5 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 B3LYP/6-311+G(3df,2p)
ABC
0.37973 0.31599 0.17813

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.062 -0.907 0.000
C2 0.000 0.155 0.000
O3 0.188 1.343 0.000
H4 2.043 -0.442 0.000
H5 0.950 -1.544 0.878
H6 0.950 -1.544 -0.878
O7 -1.244 -0.382 0.000
H8 -1.871 0.355 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.50242.41401.08491.09001.09002.36523.1934
C21.50241.20252.12842.13512.13511.35471.8814
O32.41401.20252.57453.11173.11172.24152.2831
H41.08492.12842.57451.78241.78243.28713.9940
H51.09002.13513.11171.78241.75562.63293.5119
H61.09002.13513.11171.78241.75562.63293.5119
O72.36521.35472.24153.28712.63292.63290.9681
H83.19341.88142.28313.99403.51193.51190.9681

picture of Acetic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 126.009 C1 C2 O7 111.645
C2 C1 H4 109.643 C2 C1 H5 109.869
C2 C1 H6 109.869 C2 O7 H8 107.010
O3 C2 O7 122.346 H4 C1 H5 110.076
H4 C1 H6 110.076 H5 C1 H6 107.278
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.368      
2 C 0.819      
3 O -0.697      
4 H 0.173      
5 H 0.169      
6 H 0.169      
7 O -0.529      
8 H 0.264      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.269 -1.765 0.000 1.785
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.528 -0.146 0.000
y -0.146 5.667 0.000
z 0.000 0.000 3.854


<r2> (average value of r2) Å2
<r2> 71.087
(<r2>)1/2 8.431