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

using model chemistry: HF/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 HF/6-311G**
 hartrees
Energy at 0K-227.877964
Energy at 298.15K-227.883011
Nuclear repulsion energy122.731856
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/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' 4119 3742 109.06      
2 A' 3303 3001 11.64      
3 A' 3193 2901 3.78      
4 A' 2021 1837 450.74      
5 A' 1587 1442 14.18      
6 A' 1548 1407 88.41      
7 A' 1461 1327 36.01      
8 A' 1345 1222 256.01      
9 A' 1100 1000 58.53      
10 A' 933 848 2.06      
11 A' 642 583 56.21      
12 A' 454 412 3.91      
13 A" 3257 2959 11.85      
14 A" 1594 1448 8.32      
15 A" 1171 1064 13.01      
16 A" 715 649 119.97      
17 A" 583 530 41.26      
18 A" 101 92 0.23      

Unscaled Zero Point Vibrational Energy (zpe) 14564.2 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 13231.6 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/6-311G**
ABC
0.39245 0.32008 0.18219

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.027 -0.938 0.000
C2 0.000 0.157 0.000
O3 0.226 1.316 0.000
H4 2.016 -0.506 0.000
H5 0.889 -1.562 0.876
H6 0.889 -1.562 -0.876
O7 -1.240 -0.327 0.000
H8 -1.843 0.401 0.000

Atom - Atom Distances (Å)
  C1 C2 O3 H4 H5 H6 O7 H8
C11.50072.39201.07961.08421.08422.34723.1669
C21.50071.18122.12232.12372.12371.33071.8593
O32.39201.18122.55463.08053.08052.20172.2623
H41.07962.12232.55461.77571.77573.26083.9646
H51.08422.12373.08051.77571.75162.61183.4761
H61.08422.12373.08051.77571.75162.61183.4761
O72.34721.33072.20173.26082.61182.61180.9458
H83.16691.85932.26233.96463.47613.47610.9458

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 125.811 C1 C2 O7 111.853
C2 C1 H4 109.592 C2 C1 H5 109.433
C2 C1 H6 109.433 C2 O7 H8 108.338
O3 C2 O7 122.336 H4 C1 H5 110.296
H4 C1 H6 110.296 H5 C1 H6 107.762
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.251      
2 C 0.456      
3 O -0.447      
4 H 0.130      
5 H 0.124      
6 H 0.124      
7 O -0.408      
8 H 0.271      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.433 -1.765 0.000 1.817
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.273 -4.170 0.000
y -4.170 -27.299 0.000
z 0.000 0.000 -22.786
Traceless
 xyz
x 4.769 -4.170 0.000
y -4.170 -5.770 0.000
z 0.000 0.000 1.000
Polar
3z2-r22.000
x2-y27.026
xy-4.170
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.058 -0.064 0.000
y -0.064 4.404 0.000
z 0.000 0.000 2.870


<r2> (average value of r2) Å2
<r2> 69.685
(<r2>)1/2 8.348