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

using model chemistry: HF/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-227.915079
Energy at 298.15K-227.920119
HF Energy-227.915079
Nuclear repulsion energy122.821543
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/Def2TZVPP
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' 4109 3725 112.99      
2 A' 3299 2991 10.20      
3 A' 3190 2892 3.60      
4 A' 1997 1810 452.19      
5 A' 1586 1438 14.41      
6 A' 1547 1402 73.87      
7 A' 1458 1322 49.25      
8 A' 1332 1208 236.63      
9 A' 1099 996 60.76      
10 A' 928 841 1.94      
11 A' 640 580 51.02      
12 A' 454 412 4.56      
13 A" 3250 2946 9.64      
14 A" 1596 1447 7.32      
15 A" 1174 1064 11.15      
16 A" 711 644 103.48      
17 A" 585 530 44.51      
18 A" 102 92 0.07      

Unscaled Zero Point Vibrational Energy (zpe) 14529.3 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 13169.4 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/Def2TZVPP
ABC
0.39320 0.32033 0.18240

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.983 -0.984 0.000
C2 0.000 0.143 0.000
O3 0.286 1.294 0.000
H4 1.967 -0.552 0.000
H5 0.845 -1.606 0.876
H6 0.845 -1.606 -0.876
O7 -1.258 -0.258 0.000
H8 -1.780 0.527 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.49522.38211.07461.08301.08302.35613.1493
C21.49521.18652.08632.13012.13011.32071.8208
O32.38211.18652.49673.08023.08022.18992.2035
H41.07462.08632.49671.77131.77133.23903.8993
H51.08302.13013.08021.77131.75142.64683.4936
H61.08302.13013.08021.77131.75142.64683.4936
O72.35611.32072.18993.23902.64682.64680.9430
H83.14931.82082.20353.89933.49363.49360.9430

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 124.921 C1 C2 O7 113.446
C2 C1 H4 107.420 C2 C1 H5 110.397
C2 C1 H6 110.397 C2 O7 H8 105.884
O3 C2 O7 121.633 H4 C1 H5 110.362
H4 C1 H6 110.362 H5 C1 H6 107.918
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.180      
2 C 0.503      
3 O -0.448      
4 H 0.104      
5 H 0.081      
6 H 0.081      
7 O -0.380      
8 H 0.239      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.444 -1.879 0.000 1.931
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.256 -4.172 0.000
y -4.172 -27.303 0.000
z 0.000 0.000 -22.943
Traceless
 xyz
x 4.868 -4.172 0.000
y -4.172 -5.704 0.000
z 0.000 0.000 0.836
Polar
3z2-r21.673
x2-y27.048
xy-4.172
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.487 -0.061 0.000
y -0.061 4.838 0.000
z 0.000 0.000 3.347


<r2> (average value of r2) Å2
<r2> 69.652
(<r2>)1/2 8.346